-1BARTLEY HOUSE, HOOK
Outline Specification for Refurbishment of Offices
1.
Introduction
Owens Galliver, architects were commissioned to prepare a specification for the
refurbishment and alteration of the offices and retained to monitor the contractor.
2.
Accommodation
2.1.
Internally
2.1.1
Entrance, to disabled access standards, with space for name plaque, double doors,
polished stainless steel ironmongery and letter plate.
2.1.2
Entrance foyer and reception area, with space for security desk and seating by
Tenant
2.1.3
Double doors for furniture access to office areas; fully glazed fire resisting screens
with views into office areas.
2.1.4
7 no. male wc cubicles
7 no. female wc cubicles
2 no. urinals
14 no. hand basins.
Split between front and rear of building
1 no. unisex disabled w.c. with hand basin and grab rails.
2.1.5
1 no. male, 1 no. female shower cubicle on ground floor
2.1.6
Cleaners’ cupboard on each floor with sink.
2.1.7
8 person electric lift at each end of the building.
2.1.8
Office area with general nominal floor to ceiling height of approx.
Ground floor:
First floor:
2750mm.
2710mm
2.1.9
Ceiling zone to suit new air conditioning.
2.1.10
Fully accessible raised access floor system with minimum clear void of approx:
Ground floor:
First floor:
2.1.11
158mm
115mm
Comms cupboard/gas intake/elec risers/BT intake
-22.1.12
Fixed ladder access for personnel to plant room/lifting beam and pulley over
2.1.13
Roof level plant room.
2.1.14
Roof mounted air-con chiller and air handling unit
2.1.15
Entirely new air-conditioning, water and electrical services throughout.
2.2.
Externally
2.2.1
New road pattern imprinted resin surface to ramp to car park.
2.2.2
Car parking spaces for 91 no. cars, with existing and additional “security” lighting on
columns.
2.2.3
Upgraded tree, shrub and ground cover planting to perimeter and between parking
bays. New planting bed in front of building. Existing gravel perimeters made good
2.2.4
All existing air-conditioning equipment and plinths removed.
2.2.5
New widened and re-orientated entrance steps, with existing retaining walls
reduced in length and replaced with steel guards/fencing.
2.2.6
Dilapidated fences removed; security fence on ramp removed; manual sliding gate
at foot of ramp.
2.2.7
Entrance area shrubbery cut back, dwarf wall removed, area re-landscaped.
3.
Structure
All new work to Structural Engineer’s design, and subject to soil surveys and
Building Control.
3.1
Foundations
Pile re-enforced pad footings to steel columns and brick piers/lift shaft.
3.2
Floors
Existing in-situ concrete waffle and flat slab unaffected except for service holes.
In-situ concrete with in-situ lift pit on compacted hardcore.
3.3
Walls
Existing insulated cavity walls largely unaffected
New external: generally non-load bearing cavity construction, brick and 100mm
medium density block, 70mm insulated cavity.
Internal walls 100mm medium dense block restrained at head (all new)
New concrete wall at rear core, with existing concrete wall cut for opening with steel
frame support all to Engineer’s design.
-33.4
Frame
Existing steel and concrete frame largely unaffected, columns at approx 8.0 m
centres
3.5
Stairs
Front: existing concrete stair removed. New steel stair with maple clad, folded steel
treads and risers, ash rail, stainless steel balustrade with glass infill
Rear existing concrete stair refurbished
To Building Regulation requirements, clear width 1100 mm approx., min 250
nominal going, 190 rise approx.
3.6
Lift shaft
New 215mm brick shaft.
3.7
Roof
Existing steel rafters at grid lines, existing built up galvanised twin wall insulated
metal decking on cold rolled steel purlins.
Existing decking cleaned off, limited repairs where necessary, coated with Torseal
to give guaranteed life.
Existing roof light removed, and infilled with barrel vaulted steel, insulated.
Existing U Value assumed: 0.6 W/sq.m.K.
Existing air-con chiller slab asphalt tanked; new warm roof construction with paving
slab protection, with new intake louvres within existing window frame. Plant
removable by crane from open well.
U Value target: 0.45 W/sq.m.K.
Existing air handling slab asphalt tanked; new warm roof construction with paving
slab protection. Plant removable by crane from open well.
U Value target: 0.45 W/sq.m.K.
4.
External Finishes
4.1
Facing brick
All new work to match existing
4.2
Entrance
Existing two storey aluminium curtain walling to be adapted to allow for new raised
floor and recessed entrance, with thermally isolated curtain walling system, with
sealed double glazed units, toughened where required.
-44.3
Spandrel panels
Front elevation enamelled glass/sheet metal spandrels within curtain walling and
windows to be replaced with insulated double glazed “look-alike” panels
4.4
Rear access
Existing entrance screen adapted to allow for new raised floor; new doors.
4.5
Windows
Existing windows cleaned and waxed internally, prepared and resprayed externally
All opening lights sealed shut with mastic and screws
New solar film applied to windows on south east and south west of office spaces, to
M&E requirements.
New windows in existing blank walls to match existing in appearance.
All perimeter external window mastic replaced.
4.6
Entrance and escape doors
Concealed slimline overhead closers to entrance doors.
4.7
Car park
Existing blockwork cleaned down, existing bays re-marked.
Existing concrete apron removed and replaced with blockwork to match in 200mm x
100mm x 80mm concrete block.
450 x 450 Camas Moordale textured paving slabs to steps and entrance paths.
5.
Internal Finishes (provisional)
5.1
Foyer
Floor:
Concrete block and screed make up to new levels.
Perimeter band and feature circle in maple boarding, with polished s/s
trim
Maple strip heating duct grilles
Walls:
All to be plastered; paint finish (Crown Period Tudor Rose, provisional)
Ceilings:
Sandtex sprayed plaster board on MF grid with concealed access
panels.
Skirtings:
Clear finished ash 100mm x 20mm approx.
-55.2
Office areas
Floors:
Ground floor:
New fully accessible raised access floor, 600mm x 600mm steel tray and top,
sealed with chipboard core, on adjustable pedestals, all to PSA MOB light grade
standards, e.g. Hewetson.
Rockwool cavity barriers as required by B. Regs.
First floor:
Existing, largely as ground floor. Existing floor boxes removed and panels replaced
and cleaned of significant carpet residue
Rockwool cavity barriers as required by B. Regs. (all new)
500mm x 500mm loop pile heavy contract carpet tiles; allow £19 per sq.m. supply
and lay.
Walls:
All existing perimeter services/casings to be removed, plaster made good
Existing lightweight plaster, painted with emulsion, colour to be agreed
New plaster to ground floor fair faced concrete columns, rwp cased in;
Painted three coats emulsion, colour to be agreed
Ceilings:
(all new)
600 x 600 metal tiles, SAS System 150, hinged, with circular perforations, concealed
grid with plasterboard infill on MF ceiling grid at perimeter and around column heads,
linear diffusers on main longitudinal grid lines and long perimeters.
Woven blanket cavity barriers as required by B. Regs. (all new)
Skirtings:
(all new)
Clear finished ash 100mm x 20mm approx
Cill boards: (all new)
Ash veneered blockboard with solid ash lippings.
5.3
Core areas
Floors:
Insitu concrete, new floors power floated or concrete block and screed,
and sealed for carpet
Walls:
Three coat emulsion paint on new two coat lightweight plaster colours
to be agreed
Ceiling:
New sprayed sandtex plasterboard on MF ceiling grid
-6Skirtings:
5.4
New clear finished ash 100mm x 20mm approx
W.C.s
Floors:
New and existing solid concrete or new screed over blockwork make
up.
New glazed tiles 100 x 100mm, Langley Unit 1, white
Walls:
New tiles 100 x 100mm, on two coat sand/cement render.
Full height block work wc cubicles also tiled
Full width mirrors above counter tops
Duct panel and system:
(all new)
Proprietary post formed panels, Armitage Venesta Azure, black
flashgaps
Ceilings:
5.5
New painted plasterboard suspended ceiling
Generally
Ironmongery:
(all new)
Polished stainless steel D handles with matching accessories, Allgood Modric,
Dom, or equal.
Closers to match to all doors required by Building Regulations
Doors etc:
(all new)
44mm solid core ash veneered, over solid lippings, Shadbolt or equal, factory
lacquered.
All lobby and stair doors ½ hr fire resisting, with Pyran glazed vision panels,
in small panes, proprietary intumescent glazing gaskets.
Core/office doors to be pairs.
Matching duct panels to risers, lockable.
Pair doors book matched.
Architraves, frames etc: clear finished solid ash moulded.
6.0
Services
(all new)
All to M&E consultants outline design, and sub-contractors detail design.
6.1.
M & E Services
-7Please refer to M & E Services specification prepared by RHB Partnership.
6.2.
Sanitary ware
(all new)
Columba Duraplus white porcelain cantilever w.c. and free standing hand
basins in rear wc's and disabled wc.
Armitage Shanks Contour white porcelain urinals
Armitage Shanks white porcelain shower trays
Heatrea Sadia electric showers
Armitage Shanks white Corian under counter basins, with Corian counter tops
Chromed w.c. flush handles.
Chromed traps and wastes to free standing basin in disabled wc
Concealed cisterns.
White bezel recessed tundishes with vision panels.
6.3.
Tenants’ kitchen
Spur services and wastes to back of cores on each floor in positions to be agreed for
connection by Tenant.
6.4.
Waste
All new internal foul drainage via upvc stacks to existing internal and new external
manholes (direct to mains at front of building, via sump and pump at rear of building alarm in reception)
Repairs and rodding as recommended by Engineers following survey.
6.5.
Surface water
Via existing rainwater goods to mains
Repairs and rodding as recommended by Engineers following survey.
6.6.
Supplies
Mains water, electricity and gas from Station Road/sub-station
New gas supply with external meter enclosure.
All incoming supplies uprated where necessary for proposed uses.
6.7.
Year 2000
All M&E installations to be fully Year 2000 compliant.