GROUP
CONTENTS
1.0
Introduction
3
1.1
Scope of Document
3
1.2
Brief and Design Standards
2.0
Proposed Scope of Building Engineering Services
Mechanical Services
R11 Foul Drainage above Ground
4
S10 Cold Water
6
S11 Hot Water
8
S32 Natural Gas
10
S73 Wet Chemical Fire Fighting
12
T10 Gas Fired Boilers
14
T31 Low Temperature
16
T70 Local Cooling Units
19
U10 General Supply Extract
21
U11 Toilet Ventilation
25
U12 Kitchen Ventilation
27
Electrical Services
W60 Automatic Controls
29
V10 Electricity Generation Plant
33
V12 Supply/Public Utility Supply
34
V20 LV Distribution
35
V21 General Lighting
37
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V22 General LV Power
40
V40 Emergency Lighting
42
V41 Street/Area/Flood Lighting
44
W10 Telecommunications
46
W12 Public Address/Sound Amplification
47
W13 Patent to Nurse Call System
48
W20 Radio/TV/CCTV
49
W30 Data Transmission
50
W40 Access Control
51
W41 Security Detection and Alarm
53
W50 Fire Detection and Alarm
54
W51 Earthing and Bonding
56
W52 Lightning Protection
57
GROUP
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1.0
INTRODUCTION
1.1
Scope of report
GROUP
As part of the design development The Rolton Group have produced a specification detailing the
proposed scope of Building Engineering Services associated with the Care home, Gaywood Drive,
Newbury.
The existing site comprises of existing buildings which shall be demolished prior to being developed
for a new Care home, Essential worker housing and Community facilities. This specification relates
only to the 60 bed Care Home.
1.2
Brief and Design Standards
The Build Contractor shall allow for all costs associated with the project’s preliminary requirements
and general conditions as provided by, and agreed with, the MC. With regard to the engineering
services this shall include, but not be limited to, the following:
•
Detailed design of the engineering services to comply with this performance specification
•
Confirmation of spatial requirements for engineering services, including plant rooms and
horizontal and vertical services distribution – based on the general layout and preliminary
provision indicated on the scheme drawings
•
Co-ordinated installation and working drawings
•
Operating and maintenance documentation including as installed record drawings
•
Other costs associated with complying with the project preliminaries and general
conditions, including all information relating to the form of contract, project particulars,
site restrictions and programme
This specification details the scope of works for the relevant engineering services, together with
system requirements, performance and associated design parameters. The specified systems are
based on Common Arrangement Work Sections (CAWS).
Where appropriate guidance is also given on methods of working and the required standard and/or
type of materials and equipment.
The specification does however not include full details of
materials and workmanship, or standard specification clauses.
It is anticipated that the Build Contractor shall allow for complying with the actual standards for the
project agreed with the MC and set down within the Build Contractor’s proposals for complying with
the project’s requirements.
The Build Contractor shall also confirm his proposals for equipment
manufacturers and any specialist suppliers.
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R11 FOUL DRAINAGE ABOVE GROUND
GROUP
PART 1 SYSTEM OBJECTIVES
100.010 PERFORMANCE OBJECTIVES
Provision of an appropriate above ground drainage system to serve all the sanitary ware in the
building.
100.020
DESIGN PARAMETERS
The above ground drainage system works will be designed to and shall be installed in accordance
with all appropriate standards including but not limited to the following:
•
CIBSE Guides A to J and relevant technical memorandum/design guidance and
•
CIBSE Commissioning codes
•
Building Regulations
•
The Institute of Plumbing – Plumbing Engineering Services Design Guide
commissioning codes
•
Gravity drainage systems inside buildings BS EN 12056-2
•
Relevant Acts of Parliament and Local Byelaws
•
COSHH Regulations
•
Construction Design and Management Regulations (CDM) 1994
•
ISO 1401 - International Environmental Management Standard
•
All relevant British And European Standards
The design of the above ground drainage system shall be based on the following requirements and
parameters:
•
Sanitary ware drainage requirements as indicated on the general arrangement/layout
drawings and within the room data sheets
•
Identified equipment requirements (refer to room data sheets)
•
Appropriate assessment of demand units to IOP guide
100.030 SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
All necessary above ground drainage pipework and fittings
•
Adequate venting and rodding eye/pipe access arrangements
•
Final connections to sanitary ware, equipment and below ground drainage
•
Testing and commissioning the completed installation
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not
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100.040 CONTROL REQUIREMENTS
GROUP
None required.
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S10 COLD WATER
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
Provision of a potable cold water system to deliver wholesome cold water, c/w ground floor
mounted storage tank and booster set providing, at acceptable flow, temperature and pressure to
all cold water outlets within the building under normal use.
100.020
DESIGN PARAMETERS
The design of the cold water services installation will be designed to and shall be installed
in accordance with the following standards:
•
CIBSE Guide sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
CIBSE Commissioning codes
•
Building Regulations
•
The Water Supply (water fittings) Regulations
•
BS 6700 and all other relevant British and European Standards
•
Relevant Acts of Parliament and Local Byelaws
•
COSHH Regulations
•
Construction Design and Management Regulations (CDM) 1994
•
ISO 14001 - International Environmental Management Standard
The design of the cold water system shall be based on the following requirements and parameters:
•
Nominal building resident occupancy - 60 persons
•
Minimum cold water storage per person (12 hours) - 60 litres
•
Appropriate assessment of demand units to CIBSE/BS 6700
•
Sanitary ware requirements as indicated on the general arrangement/layout drawing and
within the room data sheets.
100.030
SYSTEM DESCRIPTION
The contactor shall include for carrying out the following duties:
•
Connection to incoming water supply and meter at the site boundary (the Main Build
Contractor shall arrange the building’s water supply, the Build Contractor shall allow for
confirming the calculated maximum simultaneous demand and minimum supply pressure
to facilitate the application and liaising with the Stat. authority.)
•
Provision of water via dedicated break tank / booster system to 3 No. standpipes, 2 No in
landscaped garden, 1 No opposite side of road to the main entrance.
•
The Build Contractor shall include for installing a mains powered electromagnetic water
treatment unit to minimise the formation of scale on heat exchange surfaces and a
chemical/biocide treatment unit for the LTHW system.
•
An ionisation treatment system shall be provided on the incoming mains cold water
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service and the connection to the hot water cylinder. This is to minimise the potential risk
of contamination from water supplies operating within the parameters normally
GROUP
associated with the proliferation of legionella and other associated bacteria. To be
supplied and installed in accordance with the manufacturer's requirements as
manufactured by 'Tarn-Pure', including provision of valved bypass across each isolating
and double check valves, and the manufacturer's control panel.
•
Installation of a new two compartment cold water storage tank, the tank is to be fully
insulated, compliant with schedule 2 part 16 of the water regulations. To be complete
with inlet and outlet isolator valves and an isolatable drainable piped by-pass. Access
shall be provided so that one section can be cleaned whilst the other is still in service.
•
Provision of a pressure boosting set complete with inverter driven duty pump and
additional pumps as necessary and it’s appropriate pressure vessel and control / safety
devices with remote alarm connected to the central control system.
•
Cold water storage tank to be complete with temperature sensors
•
All exposed pipework is to be insulated and boxed.
•
Install isolating valves to all groups of fittings and provide local and individual means of
isolation to all ranges of cold water outlets (ballofix valves)
•
Final connections to all sanitary ware and other fittings/outlets
•
Thermal insulation to all concealed pipework
•
A mains cold water supply will be installed to the catering facilities include kitchettes.
•
Chlorination and sterilisation of pipework, including provision at all injection points and
any additional drain points required.
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
•
100.040
Hydro boiler to main kitchen
CONTROL REQUIREMENTS
See Section W60
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S11 HOT WATER
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
Provision of a complete hot water installation and associated internal pipework distribution to
deliver hot water services, at acceptable flow, temperature and pressure to serve all hot water
outlets and relevant equipment within the building
100.020
DESIGN PARAMETERS
The hot water system installation will be designed to and shall be installed in accordance with the
following requirements and parameters:
•
CIBSE Guide sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
CIBSE Commissioning codes
•
Building Regulations
•
The Water Supply (water fittings) Regulations
•
BS 6700 and all other relevant British and European Standards
•
BS 7671 Recommendations for electrical installations
•
Relevant Acts of Parliament and Local Byelaws
•
COSHH Regulations
•
Construction Design and Management Regulations (CDM) 1994
•
ISO 14001 - International Environmental Management Standard
•
HVCA TR20 - Installation and testing of pipework systems
The design of the hot water services installation shall be based on the following requirements and
parameters:
•
Nominal building resident occupancy - 60 persons
•
Hot water storage temperature – To suit installation
•
No of meals served in the Kitchen (breakfast, lunch and dinner) – 70 No 3 times a day.
•
Mains cold water service – supply pressure as provided by local water undertaking – to
provide cold water feed to storage tank
•
Appropriate assessment of demand units to CIBSE/BS 6700 – including cold water feed
requirements to hot water service (refer to S11)
•
Identified equipment requirements (refer to room data sheets) – base Kitchen demand on
a full production facility serving 70 meals three times a day
•
Hot water outlets and equipment as indicated on the general arrangement/layout
drawings and within the room data sheets
•
Max temperature loss from heater to outlet – 5 deg C
The system design shall be based on the hot water outlets and equipment connections, being
served directly from the boosted water supply.
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GROUP
100.030
SYSTEM DESCRIPTION
The contactor shall include for carrying out the following duties:
•
All necessary internal hot water distribution.
•
Provision of electro magnetic conditioner, mains powered for inlet to the cold water
system covering the complete installation. (See section S10)
•
Install isolating valves to all groups of fittings and provide local means of isolation to all
hot water outlets (ballofix valves)
•
Gas fired hot water heater c/w supplementary storage/buffer vessel to meet calculated
hot water service demand.
•
Stainless steel twin wall flue installation
•
Generally all pipework shall be thermally insulated (c/w vapour seal) including pipework
concealed (boxed in) in non staff areas – exposed pipework shall be limited to any staff
area locations specifically agreed with the project Architect - thermal insulation shall
generally be based on foil faced mineral fibre and/or phenolic foam to suit spatial and
specification restrictions
•
Self regulating trace heating installation to hot water service supply pipework
•
Final connections to all sanitary ware and other fittings/outlets
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
•
100.040
Allow for chlorinating/sterilising the complete installation
CONTROL REQUIREMENTS
See Section W60
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S32 NATURAL GAS
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
DESIGN OBJECTIVES
Provision of an incoming external gas supply and internal pipework distribution system to deliver
natural gas at acceptable flow and pressure to serve a gas fired boiler installation (T10) hot water
heater(s) (S11) and Kitchen equipment.
100.020
DESIGN PARAMETERS
The gas system modifications installation will be designed to and shall be installed in accordance
with the following requirements and parameters:
•
CIBSE Guides sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
CIBSE Commissioning codes
•
Building Regulations
•
Gas Safety Regulations and any other relevant British and European Standards
•
IGE Publications and standards
•
CORGI rules
•
Relevant Acts of Parliament and Local Byelaws
•
COSHH Regulations
•
Construction Design and Management Regulations (CDM) 1994
•
ISO 14001 - International Environmental Management Standard
•
HSE L56 Approved Code of Practice and Guidance, Safety in the installation and use of
gas systems and appliances
•
All relevant British and European Standards
The design of the natural gas installation shall be based on the following requirements and
parameters:
•
Maximum calculated demand of gas fired boiler plant
•
Maximum calculated demand of gas fired hot water heater(s)
•
Assessed maximum demand of Kitchen equipment requirements – based on a gas
equipment full production facility serving 70 meals three times a day
•
System delivery pressure at inlet to meter – nominally 21 mbar (to be confirmed by
selected gas shipper)
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100.030
SYSTEM DESCRIPTION
GROUP
The contactor shall include for carrying out the following duties:
•
Connection to incoming natural gas supply and meter at site boundary
•
All necessary external MDPE below ground gas supply pipework
•
All necessary internal gas distribution pipework utilising heavy grade welded mild steel
(where concealed) and installed within ventilated enclosures/spaces – the Build
Contractor shall allow for a ‘pipe in pipe’ system where applicable and agreed with the MC
•
Gas solenoid fire safety shut off valve and adjacent maintenance isolating valves c/w
fusible links above boilers/hot water heaters and linked to an emergency stop button in
the plant room
•
Secondary gas solenoid fire safety shut off valve and adjacent maintenance isolating
linked to an emergency stop button in Kitchen, also shutting off supplies to gas when
extraction is not in operation
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
100.040
CONTROL REQUIREMENTS
Refer to section W60
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S73 WET CHEMICAL FIRE FIGHTING
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
Provision of automatic fire detection and extinguishing system to protect cooking equipment and
the kitchen ventilation canopy and ductwork specified in U12, if required by the Building Control
Officer.
100.020
DESIGN PARAMETERS
The fire detection and extinguishing system shall be designed and installed in accordance with all
appropriate standards, including but not limited to the following:
•
CIBSE Guide sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
The Building Regulations
•
NFPA standards 17, 17 a and 96
•
UL 300
•
All relevant British and European Standards
The design of the fire suppression installation shall be based on the following requirements and
parameters:
•
Provision of a complete proprietary Wormauld/Ansul fire suppression system
•
Integration into the Kitchen ventilation canopy detailed in U12
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
An automatically detecting stainless steel wet Chemical Fire suppression system by
Wormauld/Ansul UK suitably sized for the application, complete with Low PH liquid Fire
Suppressant, gas shutoff valve and manual activator – the system shall be integrated into
the kitchen canopy detailed in U12 with the associated storage bottles located in an
agreed location in the area of the Kitchen
•
Installation of a natural gas supply shut off valve including all the required interfaces to
the fire suppression system.
The gas shut off valve shall be located within the supply
pipework before connecting to the central cooking range within the kitchen (refer also to
S32)
•
Installation of a manual activator to be located in an easily accessible area of the kitchen
wall.
•
Connections to the building’s fire alarm system. The Fire alarm interface will be supplied
and installed by the Electrical Build Contractor.
•
Testing and commissioning the completed installation
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•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
GROUP
system, whether specifically indicated or not
100.040
CONTROL REQUIREMENTS
The Fire Suppression System shall include an automatic means of fire detection utilising a fusible
link system to operate the system, and the manual activator shall also operate the system when
required in an emergency.
THE SYSTEM SHALL BE LINKED INTO THE FIRE ALARM SYSTEM SUCH THAT THE FIRE DETECTION
AND ALARM SYSTEM SHALL REPORT THE OPERATION OF THE SUPPRESSION SYSTEM ON
ACTIVATION. THE FIRE ALARM SYSTEM SHALL NOT ACTIVATE THE FIRE SUPPRESSION SYSTEM
UNDER ANY CIRCUMSTANCES
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T10 GAS FIRED BOILERS
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
Provision of a gas fired boiler plant to serve the LTHW system specified in T31.
100.020
DESIGN PARAMETERS
The gas fired boiler plant shall be designed and installed in accordance with all appropriate
standards, including but not limited to the following:
•
CIBSE Guide sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
The Building Regulations
•
The gas safety regulations
•
BS 6644 and other relevant British and European Standards
The design of the gas fired boiler installation shall be based on the following requirements and
parameters:
•
Maximum calculated demand of LTHW heating system
•
Nominal natural gas supply to equipment under maximum demand – 17.5 mbar (to be
confirmed with gas supplier)
•
LTHW flow temperature – 800C
•
LTHW return temperature – 600C
•
System static pressure – to Build Contractor design
100.030
SYSTEM DESCRIPTION
The Build Contractor shall include for the design, supply and installation of the following:
•
A minimum of 3 No gas fired condensing boilers sized to meet the calculated demand of
the LTHW system specified in T31 – the boilers shall be capable of being directly
scheduled to outdoor air temperature with variable flow temperature and quantity –
individual circulating run and standby pump sets shall be provided as required. The
number of boilers to be installed shall meet the heat loss of the building. This system
should be capable of being run on only 2 boiler.
•
Stainless steel twin wall flue installation shall be utilised
•
Boiler room combustion and ventilation air provision (include within U10)
•
Provision of heat detectors c/w emergency knock off button interfaced to the gas solenoid
valve specified in S32
•
Testing and commissioning the completed installation
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not
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GROUP
100.040
CONTROL REQUIREMENTS
Refer to W60.
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T31 LOW TEMPERATURE HOT WATER HEATING
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
Provision of LTHW pipework distribution system from the boilers to deliver LTHW to the underfloor
heating system throughout the building. The system must provide an overall temperature of 21c
to all usable areas.
100.020
DESIGN PARAMETERS
The low temperature hot water heating installation will be designed to and shall be installed in
accordance with the following standards:
•
CIBSE Guide Volumes A to J and relevant technical memorandum/design guidance and
commissioning codes
•
CIBSE Commissioning codes
•
BS 6644 and other relevant British and European Standards
•
The Building Regulations
•
All relevant British and European Standards
•
NHBC Standards
•
Institute of Gas Engineers guide IGE/UP/2 and all other relevant guides BSRIA Application
guide – Pre-commission cleaning of water systems
•
BSRIA Application guide – The commissioning of water systems in buildings
The design of the LTHW heating installation shall be based on the following requirements and
parameters:
DESIGN INTERNAL DRY RESULTANT TEMPERATURES
•
Bedrooms - 21ºC
•
Offices - 19ºC
•
Bathrooms - 22ºC
•
W.C.'s - 18ºC
•
Dining room - 21ºC
•
Kitchen - 18ºC
•
Laundry - 18ºC
•
Quiet room - 21ºC
•
Meeting room - 21ºC
•
Reception - 21ºC
•
Waiting areas - 21ºC
•
Shower - 22ºC
•
Treatment/therapy - 21ºC
•
Treatment/examination - 21ºC
•
Store (general) - 10ºC
•
Store (linen) - 16ºC
•
Circulation - 16ºC
•
Assisted bath, and shower rooms - 220C
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•
Staff base areas - 210C
GROUP
DESIGN INTERNAL DRY RESULTANT TEMPERATURES
HEAT LOSS CALCULATIONS
•
Winter external design temperature: -40C
•
Include overload capacity/design margin of at least 15%
•
Fabric U values to Building Regulations Part L2 2002 (elemental)
•
Natural ventilation allowance as below
•
Air infiltration rates as below
•
Heating of replacement air associated with mechanical ventilation if required as below
NATURAL VENTILATION AND AIR INFILTRATION
The following combined allowances shall be made within the heat loss calculations (and associated
emitter selection) for natural ventilation (via either openable windows, trickle ventilators or other
ventilation openings) and uncontrolled air infiltration of outdoor air:
•
Bedrooms – 1.5 a.ch/hr
•
Staff rest room/admin area – 2 a.ch/r
•
Perimeter shower/WC rooms – 2 a.ch/hr
•
Kitchen – 0.5 a.ch/hr
•
TV Lounge – 2 a.ch/hr
•
Other perimeter rooms – 1 a.ch/hr
•
Mechanically ventilated Staff Base – 2 a.ch/hr
•
Naturally ventilated dining area – to Build Contractor design – allow a minimum of 4
a.ch/hr (to 2.6 m AFL)
•
Corridors – 0.5 a.ch/hr
•
Internal rooms – 0.25 a.ch/hr
•
Entrance lobby – 6 a.ch/hr
HEATING OF REPLACMENT AIR ASSOCIATED WITH MECHANICAL VENTILATION
The Build Contractor shall make allowance within heat loss calculations and associated emitter
selection for heating up air to the required room temperature to suit the required mechanical
ventilation design solution to identified rooms in conjunction with the associated replacement air
path (refer to U10, U11 & U12) as designed by the Build Contractor as required.
HEAT LOSS CALCULATIONS
•
Winter external design temperature: -5 deg C
•
Include overload capacity/design margin for intermittent heating in accordance with the
CIBSE guide which shall not be less than 15%
•
Fabric U values to suite existing building
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•
Air infiltration rates as detailed in CIBSE and as detailed below
GROUP
LTHW DISTRIBUTION PIPEWORK
•
Maximum pipework pressure drop for design flow rate: 200-300 Pa/m
•
Maximum water velocity in pipework - 1.5 m/s up to 50 dia 2.5 m/s above 50 dia
•
Design flow and return temperatures: 80 deg C flow/60 deg C return
•
Include suitable margin to cover pipework heat loss to unheated spaces
100.030
SYSTEM DESCRIPTION
The contactor shall include for the following:
•
System fill and pressurisation units c/w integral quick fill connection to system (full back
syphonage protection) and high/low level pressure switches, and common alarm
connected to the main control system
•
Air separator and automatic air vents.
•
Gas fired boiler installation specified in T10
•
2 No 100% run and standby circulating pumps to serve variable temperature LTHW
heating circuit (directly compensated fully modulating boiler control)
•
Differential pressure system bypass to maintain minimum system flow in the event of
with TVR shut down or inverter driven variable speed pumps to match system demand to
flow
•
Underfloor heating installation complete with heating manifold and room by room control,
tamper proof set point adjusters and sensors shall be installed in each room. This
installation to be of the PePex type pipework fully integrated into the timber frame
structure. Pipework to be continuous length to suit calculated heat loss. Suitable control
shall be implemented to protect the screed from high temperatures running within the
floor pipework at any time. Local water temperature reduction shall be carried out by
suitable secondary circuit pumps, mixing valves or plate heat exchanger.
•
Thermal insulation to all concealed pipework including pipework serving low surface
temperature radiators – thermal insulation shall generally be based on foil faced mineral
fibre and/or phenolic foam to suit spatial and specification restrictions
•
All necessary LTHW pipework and fittings including commissioning/balancing valves and
zone/area isolation valves – LTHW pipework shall be installed in medium grade steel
•
Flushing and cleaning of LTHW system and provision of water treatment in line with the
standards noted in 100.020 and a recognised specialist’s recommendations
•
Miscellaneous – allow for an electric overdoor heater to the entrance lobby to supplement
other emitters
•
100.040
Testing and commissioning the completed installation
CONTROL REQUIREMENTS
Refer to section W60
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GROUP
U10 GENERAL SUPPLY/EXTRACT
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
Provision of mechanical ventilation to serve rooms and areas of the building that cannot be
adequately ventilated by openable windows or similar.
This shall include noted internal
areas/occupied rooms.
100.020
DESIGN OBJECTIVES
The general supply/extract ventilation shall be designed and installed in accordance with all
appropriate standards, including but not limited to the following:
•
CIBSE Guide sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
The Building Regulations
•
HVCA DW 144 – Specification for sheet metal ductwork
•
HVCA TR/17 – Cleanliness of ventilation systems
•
HVCA DW/TM2 – Good Practice Guide – Internal Cleanliness of New Ductwork
Installations
•
Relevant British and European standards
•
BSRIA Application Guide – The commissioning of air systems in buildings
•
HEVAC test standard – ‘Laboratory testing and rating of weather louvres when subjected
to simulated rain
•
Health and Safety Executive (L8) Legionnaires’ disease – The control of legionella bacteria
in water systems – Approved code of practice & guidance
The design of the mechanical ventilation systems shall be based on the following requirements and
parameters:
DESIGN AIR CHANGE RATES
•
WC’s – 10 a.ch/hr extract
•
Hair dresses – 20 a.ch/hr extract
•
Bathroom/Shower rooms – 6 a.ch/hr (10 a.ch/hr if room includes a WC) extract
•
Kitchenette – 6 a.ch/hr extract via domestic size cooker hood.
•
Laundry – to Build Contractors design to suit equipment requirements – allow a minimum
of 6 a.ch/hr extract
•
Smoking room – 10 a.ch/hr extract
•
Clinic Room (treatment) – 10 a.ch/hr supply and extract
•
Internal
corridors
that
cannot
be
adequately
naturally
ventilated
–
i.e.
within
accommodation/bedroom clusters and staff bases – a minimum of 2 a.ch/hr via dedicated
mechanical ventilation as required
•
Lift shaft ventilation to suit manufactures requirements
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•
Plant room – to Build Contractor design to limit maximum temperatures to design
standards
GROUP
WINTER EXTERNAL DESIGN TEMPERATURE FOR REPLACEMENT OUTDOOR AIR (DIRECT OR VIA
SUPPLY AIR INPUT WITH OR WITHOUT HEAT RECOVERY – REFER TO 100.030)
•
-50C saturated
DESIGN NOISE LEVELS
Noise levels created by the ventilation systems shall not exceed the following – either directly (via
ductwork terminals/outlets/room fan) or indirectly via noise breakout through transfer grilles from
adjacent rooms or from equipment located in roof voids.
•
Separate Assisted bath/WC/Sluice/Shower locations – NR 40
•
En-suite WC/Shower rooms – NR 40 or less – the Build Contractor shall ensure that the
noise level in the adjacent bedroom shall not exceed NR 30 with the door closed (include
allowance for noise transferred through door grilles etc.)
•
Bedrooms – NR 30
•
Hairdresser – NR 40
•
Staff/admin areas – NR 35
•
Activity Room – NR 35
•
Smoking Room – NR 40
•
Laundry room – NR 45
•
Other areas/rooms not specifically noted – NR 35
•
Design noise levels to atmosphere – to suit any planning restrictions and adjacent
buildings – where ventilation outlets/inlets are in the vicinity of openable windows the
resultant noise level in the room shall not exceed NR 30
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
Dedicated stand alone extract ventilation for each group of units to meet the design
parameters detailed in 100.020 above – extract fans to be located in duct (line) in
accessible locations in roof space to be agreed with the MC and project Architect – each
fan shall be controlled locally with DPS for central control system fault notification.
•
The contactor shall also allow for dedicated nurse base supply air systems, these systems
shall consist of a fresh air intake and supply and extract fans.
•
Extract air to be ducted to weathered external roof cowls to suit the Project Architect’s
requirements – the Build Contractor shall allow for fire dampers and associated access
doors where ductwork passes through any fire compartment
•
Replacement air paths to be designed and provided by the Build Contractor via non vision
door transfer grilles – or for small rooms (and where acceptable to the Project Architect)
via undercut doors – where necessary for adequate ventilation performance the Build
Contractor shall include for additional ventilation openings in adjacent rooms/circulation
to outdoor air to provide replacement air and to supplement window trickle ventilators
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•
Where replacement air crosses the buildings fire compartmentation/fire doors the Build
Contractor shall include for maintaining the required fire strategy/compartmentation via
GROUP
fire dampers subject to the building control officers confirmation.
•
Ductwork installation to be galvanised sheet steel (generally spiral wound) to HVCA DW
144 with final connections in flexible ductwork
•
Wall mounted weather louvres and low silhouette roof cowls to Build Contractor design
•
Horizontal and vertical engineering services distribution (common to pipework and
ductwork) the Build Contractor shall forward details of his design proposals to allow
spatial allocation and access arrangements to be confirmed.
•
Testing and commissioning the completed installation
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not
BUILDING GENERAL REQUIREMENTS
•
All ventilation terminal components (louvres, cowls, diffusers, grilles etc.) shall be finished
to a BS/RAL colour in accordance with the Architect's requirements
OTHER GENERAL REQUIREMENTS
•
A separate Kitchen extract shall be provided
•
A separate Lift motor room ventilation fan shall be provided
•
All necessary ductwork and fittings
•
Door transfer grilles or similar, for make up air from circulation spaces (allow for
maintaining building fire compartmentation where required by)
•
Sound attenuators
•
Supply and extract diffusers and grilles
•
Fire dampers where required to maintain the building's fire compartmentation
•
Ductwork thermal insulation where required (outdoor air intake, ductwork in unheated
spaces, plant rooms and where conveying heated or cool air above or below the
surrounding ambient temperature)
•
Testing and commissioning the completed installations
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
100.040
CONTROL REQUIRMENTS
Refer to section W60
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U11 TOILET VENTILATION
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
DESIGN OBJECTIVES
Provision of a toilet ventilation system shall be provided to serve the toilet areas.
100.020
DESIGN PARAMETERS
The toilet extract ventilation installation will be designed to and shall be installed in accordance
with the following standards:
•
CIBSE Guide sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
CIBSE Commissioning codes
•
Building Regulations
•
Relevant Acts of Parliament and Local Byelaws
•
COSHH Regulations
•
Construction Design and Management Regulations (CDM) 1994
•
ISO 1401 - International Environmental Management Standard
•
HVCA DW 144 – Specification for sheet metal ductwork
•
HVCA DW 171 – Standard for Kitchen Ventilation Systems
•
HVCA TR/17 – Cleanliness of ventilation systems
•
HVCA DW/TM2 – Good Practice Guide – Internal Cleanliness of New Ductwork
Installations
•
Health & Safety Executive information sheet – catering sheet No 10
•
BSRIA Application Guide – The commissioning of air systems in buildings
•
HEVAC test standard – ‘Laboratory testing and rating of weather louvres when subjected
to simulated rain
•
Health and Safety Executive (L8) Legionnaires’ disease – The control of legionella bacteria
in water systems – Approved code of practice & guidance
The toilet extract ventilation installation will be designed to be installed to the following
requirements and parameters:
•
Provide a minimum of 10 air changes/hr to all identified areas with replacement air from
adjacent circulation via door (or similar) transfer grilles
100.030
SYSTEM DESCRIPTION
The contactor shall include for supply and installation of the following equipment together with
carrying out the following duties:
•
Single WC's - local wall or ceiling mounted individual extract fans ducted to soffit
discharge.
•
Larger female/male toilets – The grouped extract will be ducted to a central area where
an extract fan unit will be installed and discharged to a roof cowl.
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•
Where appropriate more than one extract grille shall be provided in the relevant space to
ensure effective ventilation to all areas of the room
GROUP
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
100.040
CONTROL REQUIREMENTS
Refer to section W60
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U12 KITCHEN VENTILATION
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
Provision of a kitchen ventilation system comprising island extract canopy c/w induction and supply
air element to replace the exhausted air whilst removing heat and cooking fumes/odours from the
catering facility.
100.020
DESIGN PARAMETERS
The kitchen extract ventilation shall be designed and installed in accordance with all appropriate
standards, including but not limited to the following:
•
CIBSE Guide sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
The Building Regulations
•
HVCA DW 144 – Specification for sheet metal ductwork
•
HVCA DW 171 – Standard for Kitchen Ventilation Systems
•
HVCA TR/17 – Cleanliness of ventilation systems
•
HVCA DW/TM2 – Good Practice Guide – Internal Cleanliness of New Ductwork
Installations
•
Relevant British and European standards
•
Health & Safety Executive information sheet – catering sheet No 10
•
BSRIA Application Guide – The commissioning of air systems in buildings
•
HEVAC test standard – ‘Laboratory testing and rating of weather louvres when subjected
to simulated rain
•
Health and Safety Executive (L8) Legionnaires’ disease – The control of legionella bacteria
in water systems – Approved code of practice & guidance
The design of the Kitchen ventilation system shall be based on the following requirements and
parameters:
•
The design documents noted above
•
Kitchen air change rate – 30 a.ch/hr
•
Minimum face velocity for canopy 0.25 m/s
•
Canopy size to suit layout drawing and wall hood for a 60 meal kitchen, the hood shall
cover the following units anticipated to be mounted below it, Build Contractor to confirm
exact spec. prior to design.
•
Commercial 10 grid Combi Oven i.e. Convotherm 10-gn1/1
•
Twin basket fryer i.e. Moorwood Vulcan 60f type
•
Gas Grill i.e. Moorwood Vulcan 60MC4G
•
6 Burner Gas range i.e. moorwood Vulcan 90MC4R
•
Majority of replacement air (exhausted by the canopy) to be provided by a proprietary
induction/combination supply canopy with 15% make up air from the dining area (to
maintain a negative pressure)
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•
During winter conditions the supply air shall either be tempered (via the LTHW heating
system) or offset by appropriate room heating to maintain a minimum temperature of
GROUP
180C in the space
•
Kitchen internal design noise level – NR 45
•
Kitchen ventilation design noise level to atmosphere – to suit any planning restrictions
and adjacent buildings – where ventilation outlets/inlets are in the vicinity of openable
windows the resultant noise level in the room shall not exceed NR 30 for bedrooms and
NR 35 for other areas
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
Stainless steel combination supply kitchen wall canopy (as Britannia Model BKV/1234 or
equivalent) – sized to suit the size of the cooking area indicated on the layout drawings
and suitable – the canopy shall include grease filters, internal lighting and an Ansul fire
suppression system if deemed necessary (refer to S73)
•
Associated supply and extract ductwork c/w roof mounted weathered outdoor air intake
and vertical canopy exhaust discharge
•
Ductwork attenuation as required to meet design noise parameters detailed in 100.020
•
Variable speed (inverter driven) supply and extract fans
•
Supply air filtration and tempering of outdoor air supply to suit the design parameters
•
Testing and commissioning the completed installation
•
Connection to gas solenoid installation for shut off when not in operation.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not
100.040
CONTROL REQUIREMENTS
Refer to W60.
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W60 AUTOMATIC CONTROLS
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
Provision of a DDC (direct digital control) automatic control installation to serve the building and
allow safe and efficient operation of the mechanical engineering services systems.
100.020
DESIGN PARAMETERS
The automatic controls installation shall be designed and installed in accordance with all
appropriate standards, including but not limited to the following:
•
CIBSE Guide sections A to J and relevant technical memorandum/design guidance and
commissioning codes
•
The Building Regulations
•
BS 7671 (1992) – Requirements for Electrical Installations – together with all other
relevant British and European
The design of the automatic controls installation shall be based on the requirements and
parameters detailed in the 100.020 clauses of each specified work section and the control
requirements detailed in W60 clause 100.040.
100.030
SYSTEM DESCRIPTION
The contactor shall include for supply and installation of the following equipment together with
carrying out the following duties:
•
All field mounted control elements, temperature sensors, control valves etc. necessary to
achieve the required control function
•
A remote user control panel of minimum necessary dimensions shall be supplied and
installed behind the ground floor reception desk, and provide a common fault/alarm
warning light
•
Provision for an interface to the fire alarm panel
•
Have the ability to connect the DDC control system to a local area network via a
dedicated data link with the view in connecting to a front end PC.
•
Local alarms for standalone extract systems and other systems as noted below shall be
provided.
100.040
CONTROL REQUIREMENTS
The automatic controls installation shall include, but not be limited to, the following facilities:
•
Coldwater Tank Water storage temperature
•
Cold water booster set
•
Hot water service water heater control and electric trace heating controls
•
Gas service automatic shut off
•
Low temperature hot water heating boiler and system controls
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GROUP
•
General supply and extract ventilation system controls (standalone with local alarm)
•
Toilet/dirty Extract ventilation controls (standalone with local alarm)
•
The control system will be interlocked with the automatic fire detection system to ensure
safe shut down of plant should a fire occur
The Build Contractor shall allow for the design, supply and installation of the following. The Build
Contractor shall utilise a controls specialist who shall utilise controls and equipment manufactured
by Trend.
•
Main mechanical services control panel located in the plant/boiler - the control panel shall
contain all necessary DDC outstations, controllers, associated components, power and
control wiring, together with selector switches and status lights, to provide the required
control functions for the specified systems as detailed in Clause 100.040 – the control
panel shall include a fascia mounted key pad user interface with screen to access all
control functions and set points
•
A remote user control panel of minimum necessary dimensions shall be supplied and
installed within the office area – the remote panel shall indicate a common alarm for the
mechanical systems
•
A second remote user control panel of minimum necessary dimensions shall be supplied
and installed within the Kitchen – the remote panel shall allow the users to override the
kitchen ventilation time control, confirm supply and extract airflow and vary the supply
and extract fan speed to suit the cooking activities
•
A suitably sized and fused three phase power supply shall be provided for the control
panel as part of the electrical sub-contract works, from the building’s LV power
distribution – the Build Contractor shall allow for confirming details of the required power
supply
•
Power supplies to miscellaneous items (e.g. local staff base supply fans for the scheme
described in U10) shall also be provided as part of the electrical sub-contract works from
the building’s LV power distribution
•
All field mounted control elements, temperature sensors, control valves etc. necessary to
achieve the required function.
•
All necessary new power and control field wiring from the control panel c/w dedicated
containment
•
Provision for an interface to the building’s fire alarm system
•
Provision of automatic controls installation drawings (control schematics, panel layouts
and field wiring details)
•
Detailed liaison with the engineer, employer and all specialists and sub system equipment
suppliers and Build Contractors to produce a fully comprehensive and fully detailed
functional specification (developed from this specification)
•
Testing and commissioning the completed installation including training of end users
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not
COLD WATER SUPPLY
•
Reading of cold water primary meter
•
Interface with water booster unit control panel for pump failure
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•
Temperature sensor to monitor the incoming mains cold water service and display an
alarm should the temperature rise above 200C
GROUP
•
Temperature sensor to monitor the tank cold water down service temperature and display
an alarm should the temperature rise above 200C
•
Temperature sensor to monitor the cold water storage tank temperature and display an
alarm should the temperature rise above 200C
•
High and low level switches in the cold water storage tank and display of associated out of
limit alarms
HOT WATER SUPPLY
•
Power failure notification for HWAT self regulating trace heating
•
Temperature sensor in hot water service storage/buffer vessel
•
Power supply(s) to hot water service heaters and associated anti stratification pumps c/w
fault/lock out monitoring
•
Power supplies to hot water service trace heating and monitoring of fault conditions/out of
temperature alarm – or power supply to secondary circulation pump
NATURAL GAS SUPPLY
•
Reading of gas primary meter
•
Power supplies to gas solenoid valves to main incoming supply and Kitchen supply
•
Interface to Ansul fire suppression system specified in S73 if required by BCO
•
Interface with kitchen hood extraction system.
GAS FIRED BOILERS AND LTHW HEATING SYSTEM
•
Heating system to generally operate continuously with night set back facility based on 2
No internal temperature sensors located strategically within the building
•
Power supplies to gas fired heating boilers c/w fault/lock out monitoring
•
Sequence control of heating boilers to meet demand
•
Direct weather compensated temperature scheduling of common LTHW flow temperature
to outdoor air temperature via interface to boilers and in conjunction with sequence
control to match load – c/w internal and external temperature sensors
•
Power supplies to LTHW 100% run and standby pumpset – arranged for automatic
changeover on overload or flow failure via a differential pressure switch
•
Power supply to system fill and pressurisation unit c/w safety interlocks to boiler controls
and monitoring of high and low pressure alarms/faults
•
System frost protection facility (if building is left unoccupied for any reason)
GENERAL VENTILATION
•
All general ventilation shall be provided by local extract fans c/w power supplies from the
building’s LV power distribution, each fan set shall be monitored via a DPS linked to a
local alarm
•
Nurse base ventilation systems shall be controlled locally to the units with local alrm.
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KITCHEN VENTILATION
GROUP
•
Time control schedule for kitchen canopy supply and extract fans
•
Temperature control of supply air input to Kitchen c/w low supply temperature warning
alarm Power supplies to kitchen canopy supply and extract fans
•
Remote user control panel in kitchen c/w interfaces to main control panel and allow user
operation of speed control and review of system status (fans on and common fault)
MISCELLANEOUS
•
Fire alarm interface to mechanical services control panel
•
Remote user panel in main reception incorporating audible and visual warning with mute
button
to raise a common alarm
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V12 LV SUPPLY/PUBLIC UTILITY SUPPLY
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide a new LV electrical supply from the Regional Electricity Company (REC) to be
terminated within the Electric Room.
100.020
DESIGN PARAMETERS
The LV Public Utility Supply shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
BS 7671 - Requirements for electrical installation
•
Electricity at Work Act.
•
Local Regional Electricity Company's (REC) requirements.
The Build Contractor shall allow for obtaining details of the existing LV Public Utility Supply in the
vicinity of the building to facilitate the design.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
Making a formal application for a suitable electrical supply on behalf of the employers
agent. The Build Contractor shall liaise with the REC to facilitate the provision of the LV
supply and meter (located within the Electric Room) by the REC.
•
All wiring and containment for the above installation.
•
Testing, commissioning and demonstration of the system.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically identified or not.
100.040
CONTROL REQUIREMENTS
The Build Contractor shall liaise with the Electrical Statutory Authority to ensure that discrimination
is afforded between the new installed equipment and the LV distribution equipment throughout the
development.
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V20 LV DISTRIBUTION
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
DESIGN OBJECTIVES
To provide power supplies and containment to all distribution boards, Mechanical Services Control
panels, Fire Alarm Panel and all other electrical equipment within the building including all
cabling/wiring and containment.
100.020
DESIGN PARAMETERS
The LV Distribution shall be designed, supplied, installed, tested and commissioned in accordance
with all the appropriate standards, including but not limited to the following:
•
BS 7671 - Requirements for electrical installation
•
Electricity at Work Act.
•
BS EN 60439 - Low voltage switchgear and control gear assemblies.
•
BS 5467 - 600/1000V and 1900/3300V armoured electric cables having thermosetting
insulation.
•
BS 6207 - Mineral insulated copper cables and a rated voltage not exceeding 150V.
•
BS EN 10142 - Continuous by hot dipped metal coated steal sheet strips and sheets &
10143 for cold forming.
•
BS 6121 -Mechanical cable glands
The Build Contractor shall forward to the Engineer installation drawings and calculations to show
compliance with the above standards and description below.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall include for the Supply and Installation of the following:
•
A new MCCB panel board shall be located within the switch cupboard, and will provide
outgoing ways complete with all MCCB’s Meters and associated equipment to all the
distribution boards, mechanical equipment and other electrical items. Each outgoing way
shall be complete with a maximum demand check meter.
•
All sub main cables shall be multicore XLPE/SWA/LSF Copper cables. For underground
routes, sub main cables shall be installed within ducts, and for internal routes, sub main
cables shall be mounted onto tray/rack suitably supported from the building structure.
•
All final circuits cabling/wiring shall be double insulated multicore copper cable, zero
halogen supported on tray within ceiling void and capped when chased into wall, as
detailed within this specification.
•
A minimum of 25% spare capacity is to be incorporated into any wiring containment
systems, distribution boards or routes to enable future wiring installation.
•
Each per or set of four rooms and ensuites may be separately supplied from their own
locally mounted sub distribution board.
•
The incoming TP&N MCCB shall be complete with over current, and earth fault protection.
•
The outgoing MCCBs shall be complete with adjustable electronic over current protection.
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GROUP
•
Wiring and Containment for the above installation
•
Testing and Commissioning of the completed system
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
Testing and Commissioning of the completed system
100.040
CONTROL REQUIREMENTS
None required
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V21 GENERAL LIGHTING
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
The Build Contractor shall provide an ergonomic, efficient and effective general lighting solution for
the development utilising modern lighting methods and equipment in order that the building
occupants may carry out designated tasks and to ensure the safety of all personnel
100.020
DESIGN PARAMETERS
The lighting installation shall be designed, installed, tested and commissioned in accordance with
all appropriate standards, including but not limited to the following:
•
BS 7671 - Requirements for electrical installation
•
Electricity at Work Act.
•
Health and Safety ( Display Screen Equipment ) Regulations 1992.
•
CIBSE Code for Lighting 2002.
•
CIBSE Lighting Guide LG3 Visual Environment for Display Screen Use - with 2001
addendum.
•
CIBSE Lighting Guide LG2 Hospital and Healthcare Buildings.
Building regulations (Including Part L2)
The design of the lighting shall be based on the following requirements and parameters:
Lighting levels shall be as follows :
Bedrooms
150 lux
Offices
400 lux
W.C.'s
100 lux
Bathrooms
150 lux
Dining Room
150 lux
Kitchen
300 lux
Laundry
300 lux
Quiet Room
100 lux
Seminar/Meeting Room
500 lux
Interview/Observation Room
500 lux
Reception
200 lux
Waiting Areas
200 lux
Shower
150 lux
Treatment/Therapy
300 lux
Treatment/examination
500 lux
Store (general)
100 lux
Store (linen)
100 lux
Circulation
150 lux
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•
The maintained illuminance levels shall fully comply with the requirements of the CIBSE
code for lighting, and the initial circuit luminous efficacy shall be in excess of 40
GROUP
luminaire-lumens/watt for fixed lighting installations, generally in accordance with the
requirements of Part L2 of The Building Regulations 2000.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
Artificial lighting is to be provided in all areas of the building utilizing low energy,
high efficiency sources and optical systems with modular, wall mounted, decorative
luminaires to suit the visual appearance and functions of the various areas of the
building.
•
General lighting to the circulation areas shall utilise high frequency compact fluorescent
wall lights with opal diffusers and downlights. In the corridors the fittings shall be so
switched to enable a reduced level of lighting at night. Building entrances shall be utilise
decorative accessories fitted to the luminaries and be supplemented by decorative wall
washers.
•
Lighting in the bedrooms will be of the domestic variety with ceiling rose and lamp holder
fitted with a compact fluorescent lamp. Over the bed an adjustable low temperature
spotlight shall be installed separately switched from the bed head, the main room light
shall be on a two way switch.
•
A night light mounted at low level utilising a high efficiency lamp shall be fitted in each
bedroom controlled by a standard rocker switch by the door.
•
General lighting to toilet areas shall be provided by ceiling mounted compact fluorescent
luminaires with tamper proof diffusers. The Lighting layout will be designed to suit the
layout of the toilet appliances and partitions, with particular interest to areas where
mirrors are located. Shaver light and socket to be provided.
•
General lighting to the plant areas of the installation and associated access routes shall be
illuminated using high frequency battens and bulkhead type luminaires which shall be
protected to a minimum of IP45 and IX10. Cable routes for these areas if not within
plaster shall be surface mounted metal galvanised conduit suitably fixed to the building
structure.
•
Luminaires shall be sufficiently safe for the user groups within client areas. Fittings should
be tamper proof and shall be chosen to reduce the potential for ligature points. Whilst
maintaining these criteria the lighting within client areas shall give a domestic feel.
•
Suitably sized power supply and wiring shall be provided to serve the client fit out shaver
lights to each en-suite bathroom via a blank plate.
•
Lounges shall be installed with a mixture of wall mounted uplights, perimeter downlights
for reading and ceiling mounted which shall be switched on multiple circuit. Switches shall
be suitably engraved to differentiate each circuit. The wall lights shall be dimmable.
•
Colour rendering and colour temperature of lamps shall be common, to similar areas
of use, throughout the facility.
•
Fluorescent lighting shall be as manufactured by Zumbtobel, Thorn, Marlin or Whitecroft
or equal and approved.
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•
Luminaires shall be selected so as to minimise the number and variety of lamps
required by the Client, so as to ensure that his maintenance procedures and stores
GROUP
of lamps, etc is kept to a minimum.
•
Accessories shall be plastic finish as manufactured by MK, Crabtree, MEM or Wandsworth.
•
All lighting circuits shall be wired in Twin and earth with capping within the building fabric
and where appropriate supported on cable tray or clipped to the fabric. The CPC shall be
the same size as a minimum of the phase conductors, i.e. not reduced size.
•
The Build Contractor shall include all wiring and containment for the above installation.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary component parts, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
100.040
•
CONTROL REQUIREMENTS
The circulation area lighting from the main entrance to Reception area shall be two way
switching from a switch panel located just inside the Main entrance and from the
Reception area.
•
Corridor lighting shall be controlled from the nurse bases and at the head of the stairs.
•
Lighting within the lounges, shall be dimmable (as detailed in room data sheets).
•
Unless stated otherwise all manual switches shall be of the wide variety and shall be 20
Amp rated, multi-grid mounted type and shall be recessed into the building finishes.
Switches at common points shall be mounted into the same switch plate, including all key
switches. Blanking plates shall be fitted to all un-used grid positions. Where multi gang
and central control switching is used or where the function of the switch is not
immediately obvious the switch plate shall be labelled or engraved as detailed in this
specification.
•
All other lighting including Plant area and routes to plant areas shall be manually switched
at entrance/exits. Accessories for the plant areas shall be surface mounted, for other
areas these shall be flush mounted.
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V22 GENERAL LV POWER
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide a General LV power system throughout the new development to supply portable
equipment, fixed equipment and sundry services to related items in a safe, isolatable, user
operable manner.
100.020
DESIGN PARAMETERS
The General LV Power shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
BS 7671 - Requirements for electrical installation
•
Electricity at Work Act.
•
BS EN 60439 - Low voltage switchgear and control gear assemblies.
•
BS 5467 - 600/1000V and 1900/3300V armoured electric cables having thermosetting
insulation.
•
BS 6207 - Mineral insulated copper cables and a rated voltage not exceeding 150V.
•
BS EN 10142 - Continuous by hot dipped metal coated steal sheet strips and sheets &
10143 for cold forming.
•
BS 6121 - Mechanical cable glands
The design of the General LV Power system shall be based on the following requirements and
parameters:
•
Socket outlets as detailed in the room data sheets.
•
Items of fixed equipment as detailed in the room data sheets.
•
Items of mechanical plant.
•
Assisted bath units
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
The Build Contractor shall provide power supplies to each and every item of electrical
equipment within the development as detailed in the tender documentation, including but
not limited to supplies to socket outlets, nurse call system panel and all necessary
outstations, magnetic locks to external doors and mechanical ventilation.
•
Provide dedicated supply for patch panel including clean earth.
•
Twin socket outlets shall be installed throughout the development, as detailed in the room
data sheets. The socket outlets shall be wired in ring circuits. All sockets within the client
areas shall be protected by the use of RCD’s.
•
Additional dedicated circuits shall serve single switched socket outlets complete with
board mounted RCD protection for cleaners. The Cleaners socket outlets are to be
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distributed throughout the building on the basis that cleaning equipment will have a 10m
flexible lead. All areas of the building are to be serviced with cleaning equipment.
GROUP
•
Connection units shall be labelled with the fuse sizes and, unless otherwise specified, shall
be complete with neon indicator, double pole switch and a concealed type flex outlet with
flex clamp. All connection unit fuses shall be sized to suit the appliance served. All
connection units shall also be supplied with labels identifying the item of equipment they
are serving, whether the item is obvious or not.
•
Appropriate fire-stopping shall be supplied and installed, by the Build Contractor, to all
services that pass through Fire walls.
•
Additional supplies throughout the building shall be provided to serve powered fire alarm
interface units, Access control panels, and various vending and catering equipment.
Forms of isolation to the Fire Alarm and Security Control Panels shall take the form of
unswitched fused connection units, with fuse-links being provided and sized to suit the
equipment. All items of fixed equipment will have engraved on their spurs the name of
the appliance.
•
Power supplies shall be provided to local extract fans, the fans shall be connected via a
local unswitched fused connection unit, fans to be provided by mechanical Build
Contractor.
•
Power supplies shall be provided to a 63A TP&N distribution board for the kitchen
equipment complete with emergency stop button. Exact details to be confirmed.
•
Power supplies shall be allowed for all fixed equipment in the laundries, kitchenettes, etc.
•
Accessories shall be plastic finish as manufactured by MK, Crabtree, MEM or Wandsworth.
•
All power circuits shall be wired in Twin and earth with capping within the building fabric
and where appropriate supported on cable tray or clipped to the fabric. The CPC shall be
the same size as a minimum of the phase conductors, i.e. not reduced size.
•
The Build Contractor shall include all wiring and containment for the above installation.
•
The Build Contractor shall allow for and carry out the final wiring and connections of
all items of equipment as detailed within this specification. This shall include for all
necessary containment systems etc. and shall be limited to a maximum length of
2m.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
100:040
CONTROL REQUIREMENTS
None required
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V40 EMERGENCY LIGHTING
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide emergency lighting throughout all parts of the new development ensuring safe
unobstructed means of escape from the exit points at all times and to enable the location and
operation of fire alarm points and fire fighting equipment.
100.020
DESIGN PARAMETERS
The Emergency lighting shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
•
•
•
100.030
BS 7671 - Requirements for electrical installation
Electricity at Work Act.
CIBSE TM12 - Emergency Lighting
BS 5266 – Emergency lighting
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
The emergency lighting system shall be provided utilising integral conversion units within
the general lighting installation where practicable.
•
Dedicated maintained luminaires shall be installed, internally, over all emergency exits
doors and all internal escape route doors, with the emergency exit signs being lit from
units mounted adjacent to the signs provided by the MC, with unswitched live connection
wired from the same circuit as the General lighting to the building.
•
External non-maintained IP65 rated emergency light fittings shall be installed externally
over every emergency exit door, with unswitched live connection wired from the same
circuit as the external lighting to the building.
•
All emergency luminaires shall provide the required maintained illuminance for 3 hours.
•
All circuits shall be wired in Twin and earth with capping within the building fabric and
where appropriate supported on cable tray or clipped to the fabric. The CPC shall be the
same size as a minimum of the phase conductors, i.e. not reduced size.
•
The Build Contractor shall include all wiring and containment for the above installation.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
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GROUP
100.040
CONTROL REQUIREMENTS
All emergency lights shall have local test facilities in the form of key switches which shall be
located within general lighting switch plates where required. Key switches shall be labelled
'Emergency Test Switch'.
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V41 STREET/AREA/FLOOD LIGHTING
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide the illumination of the pedestrian walkways and roads around the development.
100.020
DESIGN PARAMETERS
The External Lighting shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
BS 7671 - Requirements for electrical installation
•
Electricity at Work Act.
•
CIBSE LG6 - The Outdoor Environment
•
Secured by design recommendations
The design of the external lighting installation shall be based on the following requirements and
parameters:
•
External illuminance levels 20 Lux average across car park and pedestrian areas with
higher levels of 50 lux local to the drop off zone and main entrance.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
The entrance shall be accented using metal halide or High Frequency Compact
Fluorescent bollards, These shall also be used to light the walkways within the garden
area to an illuminance as detailed in LG6.
•
Patios of individual flats shall be lit with low energy compact fluorescent units that shall
be switched internally adjacent to patio door complete with a photocell integral to the
fittings.
•
Façade and bollard lighting shall be provided to the court yard and sensory gardens.
•
The car park shall be illuminated using column mounted discharge luminaries with zero
upward light.
•
The clinical and general waste areas shall be lit with Compact fluorescent bulkhead units.
•
The Build Contractor shall include all wiring and containment for the above installation.
•
External light fittings shall be as manufactured by Marlin, Holophane, Whitecroft or equal
and approved.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
100.040
CONTROL REQUIRMENTS
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The External lighting installation shall be controlled via photocells mounted on the north facade of
the building and a time switch located adjacent to the external lighting distribution board. The
GROUP
fittings shall be circuited so that the front of the building is on a separate circuit to the rear.
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W10 TELECOMMUNICATIONS
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide distribution wireways and CAT 5e cabling including Krone type patch panels from the
main server room to the various outlets distributed around the building generally as defined in the
RDS.
100.020
DESIGN PARAMETERS
•
BS 7671 Requirements of an electrical installation.
•
BS 6701 Code of practice for installation of apparatus intended for connection to certain
telecommunication systems.
•
Electricity at Work Act.
100.030
SYSTEM DECRIPTION
The Build Contractor shall include for the Supply and Installation of the following:
•
The Build Contractor shall provide a Comms basket/tray distribution network to install his
Cat 5e cabling from the comms cabinets in the comms room to the positions required in
each area.
•
Suitable RJ45 outlet plates at each telephone outlet position.
•
A stand alone two way intercom system which shall be installed into every disabled toilet
for communication with the associated reception area. Master station shall be located at
the Reception desk with star wired link to all disabled toilet locations. Intercom system
shall incorporate integral speaker and microphone for singles push activation.
•
Services of different type shall utilise the same containment system where appropriate
however there shall be separate compartments for each service, power cables shall be
separated from other service described in this specification
•
Krone type floor mounted patch panel for making off of all cabling located in the server
room.
•
Cat 5e wiring and containment for the above installation
•
Testing and commissioning of the completed system
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
100.040
CONTROL REQUIREMENTS
None required
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W12 PUBLIC ADDRESS/SOUND AMPLIFICATION
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide a sound system to enable the utilisation of hearing aids at the main reception area,
within the dining and lounge areas.
100.020
DESIGN PARAMETERS
•
BS 7671 - Requirements for electrical installation.
•
Electricity at Work Act.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall include for the Supply and Installation of the following:
•
An induction loop system at the reception, dining and lounge areas.
•
Public Address systems located within the Reception area.
•
Wiring and containment for the above installation
•
Testing and commissioning of the completed system
•
In order to minimise any nuisance in adjacent rooms, these areas shall have walls
finished in earthed foil backed plastic.
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
100.040
CONTROL REQUIREMENTS
None required
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W13 PATIENT TO NURSE CALL SYSTEMS
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide a nurse call and alarm system with integrated disabled alarm system throughout the
building.
100.020
DESIGN PARAMETERS
The nurse call system shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
BS 7671 - Requirements for electrical installation
•
Electricity at Work Act.
•
Local Regional Electricity Company's (REC) requirements.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
The Nurse call system shall be a Network II Network call system or equal.
•
Indicating panels shall be installed at each nurse call station covering the area served by
that nurse station.
•
Call points shall be located at the bedhead of each bedroom and shall consist of a plug-in
jack with pear shaped push on a flexible cable.
•
Ceiling pull cord operated units shall be provided in all toilet/en-suite spaces and shall be
operable from WC, basin, shower/bath.
•
Call reset units shall be incorporated in each room.
•
Each bedroom shall also incorporate a movement detector (PIR) which will detect any
occupant moving around the room, screening shall be employed to stop activation by the
occupant moving on the bed. This shall initiate a call.
•
Call and reset units shall be installed in all resident user spaces, i.e. lounges, smoke
rooms, quiet rooms, bathrooms, etc.
•
The system shall include disabled alarm call facility to the rooms as detailed in the room
data sheets.
•
The Build Contractor shall include all wiring and containment for the above installation.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
100:040
CONTROL REQUIREMENTS
None required
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W20 RADIO/TV/CCTV
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide a Radio/TV system throughout the new building and provide a satellite receiving and
decoding system.
100.020
DESIGN PARAMETERS
The Radio/TV/CCTV system shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
•
BS 7671 - Requirements for electrical installation
Electricity at Work Act.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
Provide 5 no Lounges with SMATV system including dish, cabling, outlets and signal
amplifiers for a fully operational system.
•
Trunking runs and drops shall provide wire ways to all areas of the building which require
terrestrial Radio/TV as detailed in the room data sheets.
•
Wiring drops to room containment shall be run in conduit and chased into partitions,
outlets shall have suitable screening to prevent feedback into the system.
•
All amplification and distribution equipment required to maintain picture quality at all
outlets as determined by strength of signal tests.
•
Services of different type shall utilise the same containment system where appropriate
however there shall be separate compartments for each service, and power cables shall
be separated from any other service as detailed in this specification.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
100:040
CONTROL REQUIREMENTS
None required
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W30 DATA TRANSMISSION
GROUP
100.010
PERFORMANCE OBJECTIVES
To provide distribution wireways and CAT 5e cabling including Krone type patch panels from the
main server room to the various outlets distributed around the building generally as defined in the
RDS.
100.020
DESIGN PARAMETERS
•
BS 7671 Requirements of an electrical installation.
•
BS 6701 Code of practice for installation of apparatus intended for connection to certain
telecommunication systems.
•
Electricity at Work Act.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall include for the Supply and Installation of the following:
•
The system shall include for a Comms basket within the electrical service riser which shall
be routed from the comms room to distribute the Cat 5e cable installation. On the various
floors a comms basket containment system shall be routed in the ceiling void. From the
basket a conduit containment system shall be supplied to the data outlet locations.
•
Suitable RJ45 outlet plates shall be installed at each data outlet position.
•
Include for data distribution to Lounges, admin, etc.
•
Krone floor mounted patch panel for making off of all cabling located in the server room.
•
Wiring and containment for the above installation comprising of Cat 5e cabling and data
outlets.
•
Testing and commissioning of the completed system
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
100.040
CONTROL REQUIREMENTS
None required
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W40 ACCESS CONTROL
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide an Access Control system to external doors throughout the building.
100.020
DESIGN PARAMETERS
The access control system shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
•
•
BS 7671 - Requirements for electrical installation
Electricity at Work Act.
Local Regional Electricity Company's (REC) requirements.
The design of the Access Control System shall be based on the following requirements and
parameters:
•
Key pad control to main entrance door.
•
Audio and video connection from the externally and internally mounted entry systems
shall operate via the care providers main telephone PBX. A CCTV cameras at the main
entrance shall be provided for the care provider to connect to their web based system.
The dedicated camera shall be suitably positioned within the lobby, internal to the front
entrance lobby and within the main entrance. These shall obtain a clearly defined picture
of the callers which can be viewed and the individual recognised prior to the client letting
in or out any individual.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
Containment runs and drops shall provide wire ways to the main entrance.
•
The main entrance doors shall be controlled by a key pad system when both entering and
exiting the building.
•
Override control shall be from any phone duly allocated.
•
Wiring drops to room containment shall be run in the walls or chased into partitions.
•
Services of different type shall utilise the same containment system where appropriate
however there shall be separate compartments for each service, and power cables shall
be separated from any other service as detailed in this specification.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
100:040
CONTROL REQUIREMENTS
None required
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GROUP
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W41 SECURITY DETECTION AND ALARM
GROUP
100.010
PERFORMANCE OBJECTIVES
To provide an alarm system within the building to enhance the protection of the property and
personnel from theft, damage or assault.
100.020
•
DESIGN PARAMETERS
BS 7671 - Requirements for Electrical Installations
100.030
SYSTEM DESCRIPTION
The Build Contractor shall include for the Supply and Installation of the following:
•
Door contacts fitted to each external emergency exit door (5No.) shall be provided. The
door contacts shall be wired back to a sounder at the relevant nurse station. Each door
shall have the facility to manually override the alarm via a key pad as used for access.
•
Wiring and containment for the above installation.
•
Testing and commissioning of the completed system
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
100.040
CONTROL REQUIREMENTS
None required
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W50 FIRE DETECTION AND ALARM
GROUP
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide a L1 Fire detection system throughout the new building this shall automatically detect
the presence of fire, and provide manual fire alarm operation on the emergency exit routes from
the building.
100.020
DESIGN PARAMETERS
The Fire detection system shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
•
BS 7671 - Requirements for electrical installation
Electricity at Work Act.
The design of the Fire detection system shall be based on the following requirements and
parameters:
•
L1 fire detection system.
The design will be in accordance with the Care providers fire policy.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
An addressable fire detection system shall be installed within the new building. This shall
incorporate automatic detection located throughout and sounders located as to comply
with BS5839.
•
The fire alarm panel shall be located in the main entrance and shall be flush mounted in a
position to be agreed with the BCO and FO and shall have 72 Hours battery backup.
•
Repeater fire alarm panels, indication only, shall also be installed on the first and second
floors.
•
The system shall have the facility to signal an external call centre in the event of fire.
•
Each corridor door shall be equipped with magnetic hold open devices linked to the AFD
system which will release on fire.
•
All manual call points shall be recessed into the building finishes except for those
mounted within plant areas that shall be surface mounted.
•
Fire Alarm interfaces shall be installed to the Mechanical Services Control Panels to shut
down in the event of fire. The fire alarm panel shall be programmed so that the
Mechanical Services Control Panel shall not shut down under test.
•
Allowance shall be made for future Fire Alarm interfaces to be installed on all loops for
future installation of access control equipment.
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•
GROUP
Zenon flashing units to be installed in noisy areas such as the Mechanical Services Plant
rooms, to supplement the sounder installation.
•
Fire Alarm interfaces to all access control panels.
•
Separate detection loops per floor.
•
Two radial sounder circuits.
•
Wiring and containment for the above installation
•
Testing and commissioning of the completed system
•
The zoneing of the building shall be such that phased evacuation is possible.
•
The system shall automatically alert the local fire authority via an automated dialing unit.
•
A Fire Alarm interface shall be linked to the Ansul fire suppression system in the kitchen if
required.
•
Combined sounders/detectors shall be utilised and smoke detectors shall be generally
used with heat only being installed in plant rooms, kitchens and smoking rooms.
•
Multiple sounder circuits shall be installed and adjacent sounders shall be connected to
different sounder loops.
•
Fire Alarm equipment shall be as manufactured by Gents, ADT or Cerberus or equal and
approved.
•
All cabling/wiring and containment associated with the above run in Firetuff cable or
approved equivalent.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
100.040
CONTROL REQUIREMENTS
The new fire alarm system shall be stand alone within the new development in the event of a fire
detection the whole of the new development shall signal for evacuation.
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W51 EARTHING AND BONDING
GROUP
100.010
PERFORMANCE OBJECTIVES
To provide an earthing system within the building for all protective and functional earthing
requirements.
100.020
DESIGN PARAMETERS
The Earthing and Bonding shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following
•
BS 7671 Requirements for Electrical Installations
•
BS 7430 Earthing
100.030
SYSTEM DESCRIPTION
The Build Contractor shall include for the Supply and Installation of the following:
•
Main Earthing Terminal - an Earth bar is to be provided within the Electrical Meter Room.
•
Circuit Protective Conductors - Where CPC are not mechanically protected they shall be a
minimum size of 4.0mmsq.
•
Main and Sub-Main Circuits - All cable armour shall be soundly bonded.
•
Supplementary Equipotential Bonding - This shall generally be achieved by the
common/looped protective conductor system.
However, bonding of other electrical
services including fire alarm, emergency lighting, security and data trunkings and
conduits shall be carried out in main routes at intervals of 30m maximum by looping
minimum 4mmsq conductors to them from the nearest power/lighting tray trunking or
conduit.
•
Cable trays shall be bonded to the common protective conductor tape wherever a tee-off
occurs.
•
Equipotential Bonding of Other Services - Pipework and ductwork shall be bonded to the
local power trunkings and conduits with conductors of size in accordance with IEE
Regulations 547.
Pipes and ducts will be provided with bonding lugs by others at all
points of exit and entry to plant rooms etc.
•
All rooms with metallic sinks, water taps, gas outlets etc. shall have cross bonding of
metal parts and pipework at maximum spacing of 10m.
The bonding points shall be
connected to the local socket outlet circuit protective conductor systems.
Minimum
4mm2 cable shall be used.
•
Toilets and kitchens services shall be similarly bonded.
•
Ceiling suspension grid main T bars shall each be bonded to local protective conductor
systems with 4mmsq cable.
Each ventilation grille fitted to the ceiling shall also be
bonded.
•
Wiring and containment for the above installation
•
Testing and commissioning of the completed system
•
Installation of all necessary supplementary components, systems and equipment to
support a fully functioning system whether specifically indicated or not
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GROUP
100.040
CONTROL REQUIREMENTS
None required
W52 LIGHTNING PROTECTION
PART 1 SYSTEM OBJECTIVES
100.010
PERFORMANCE OBJECTIVES
To provide a lightning protection system to protect personnel, the building and associated
equipment from lightning strikes.
100.020
DESIGN PARAMETERS
The LV Public Utility Supply shall be designed and installed in accordance with all the appropriate
standards, including but not limited to the following:
•
BS 7671 - Requirements for electrical installation
•
BS 6651 – Protection of structures against lightning
•
Electricity at Work Act.
•
Local Regional Electricity Company's (REC) requirements.
100.030
SYSTEM DESCRIPTION
The Build Contractor shall allow for the design, supply and installation of the following:
•
The Build Contractor shall design, supply, install, wire, set to work, test, commission and
demonstrate the completed Lightning Protection System as detailed in this specification,
including the information described in this section.
•
The Build Contractor shall install an air termination network. Adequate down conductors
shall be installed using PVC insulated tape fixed to the fabric of the building.
•
The Build Contractor shall install Earth electrodes from each down conductor.
The
electrode shall be complete with an inspection pit and test link. The Build Contractor shall
size the electrode to ensure compliance with the British Standards.
•
Earth resistivity tests to enable the correct calculations methods shall be undertaken.
•
A connection from the lighting protection system to the main earth terminal.
•
The Build Contractor shall allow for the design, supply and installation of all necessary
supplementary components, systems and equipment to support a fully functioning
system, whether specifically indicated or not.
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