Documentation on Open RFP
December 13, 2010
Annex 3 Technical Specification for providing nodal sites’ construction works
1. Organizer’s responsibility
The Organizer shall be responsible for the following:
1.1.
1.2.
1.3.
1.4.
Acquisition of the site
Provisioning of access up to the site
Supply of electrical power up to the site required for site operation
Approval of the material used on site
2. Applicant’s responsibility
The Applicant, taking into consideration the turnkey approach of the service render
under this RFP, shall be responsible for and not limited to:
2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
2.7.
Preparation and submission of the Site Survey Report (SSR)
Submission of site prototypes folder
Preparation and submission of the Project Files
Supply of all material needed for the purpose of constructing the site (Towers,
masts, antenna supports, lightning system, grounding system, cable trays,
cable ladders, power cables, power boxes, civil material, fences, access
ladders, accessories, fixation material, etc.)
Construction of the site (Civil works, grounding and lightning works, towers
erection, installation of all supplied material, waterproofing, asphalting, etc.)
Preparation of the As-Built folder
Request for provisional and final acceptance of the site with the Organizer
3. Towers
3.1.
Towers shall be self supported type
3.2.
Towers shall be designed to withstand the loads indicated by specification
mentioned in the tables given below:
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Documentation on Open RFP
December 13, 2010
Standard towers for 40m High
Antennas bracket
№
height marks
Dimension (Max)
Weight, kg
(Max)
Antennas Qty.
MW
Ø = 1.2 m
64
4
Antenna type
1.
Top
2.
Top – 3m
Panel BS
2580х262х116 mm
20
6
3.
Top – 7m
Panel BS
2580х262х116 mm
20
3
4.
Top – 10m
MW
Ø = 0.6 m
40
2
Strengthened towers for 100m High
1.
Antennas bracket
№
height marks
Top
2.
Top – 3m
Panel BS
2580х262х116 mm
20
6
3.
Top – 6m
MW
Ø = 1.2 m
64
2
MW
Ø = 0.6 m
40
2
Antenna type
Dimension (Max)
MW
Ø = 1.2 m
Weight,
(Max)
64
kg
Antenna Qty.
4
4.
Top – 9m
Panel BS
2580х262х116 mm
20
3
5.
Top – 12m
MW
Ø = 0.6 m
40
4
3.3.
Towers shall be designed for a maximum deflection of 1º for GSM antenna and
0.5º for MW antenna in the 99.9% of the operational time
3.4.
Towers shall be designed for a maximum operational wind speed of 160Km/h
and a maximum survival wind speed of 200 Km/h
3.5.
Towers stability shall be calculated taking into consideration the following loads:
3.5.1.
3.5.2.
3.5.3.
3.5.4.
3.5.5.
3.5.6.
3.5.7.
3.5.8.
3.5.9.
GSM antennas
MW antennas
Antenna supports
Tower mounted amplifiers (TMAs)
Aviation Warning Lights (AWL)
Mounting frames
Platforms / Handrails
Punctual loads induced by personnel working on or climbing the tower
Punctual loads induced by a worker in fall, restrained by his safety harness,
attached to a structural member
3.5.10. The structure itself
3.5.11. Feeder cables
3.5.12. Other cables for directional radio, night beaconing …
3.5.13. Climbing and safety system
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Documentation on Open RFP
December 13, 2010
3.6.
Applicant should submit the detailed stability calculation for each proposed
tower, taking into consideration the above requirements. The calculation
should include the dimensioning of the concrete base of the tower taking into
consideration an adverse type of soil
3.7.
Tower should ensure:
3.7.1. Established carrying capacity
3.7.2. Established deformity (provision of tolerances)
3.7.3. Established height
3.7.4. Wind force
3.7.5. Ice and snow loads
3.7.6. Seismic stability
3.8.
Proposed towers should include at least the following accessories:
3.8.1. Access ladder, step-ladder with arc form fence which will ensure the working
personnel’s safe climbing to the tower and descending from it according to
the security standards. Demands to the step-ladder and adapter
technological plate:
3.8.1.1.
The width of the ladder should not be less than 0.45m, space
between the steps – no more than 0.35m, the steps should be made of
round steel with the diameter of 20mm
3.8.1.2.
Fence arcs should be placed on the distance no less than 0.8m from
each other and should be connected to each other by no less than three
lengthwise rods from round or flat steel, the distance between the ladder
and the arc should not be less than 0.7m and no more than 0.8m with the
arc radius 0.3-0.4m
3.8.1.3.
The ladders platforms for rest should be arranged in every 6-8m
(sometimes when the span length is 10-20m two guide sticks parallel to
the ladder stringer are established with the diameter of 20mm for the
alternate fastening of the safety belt carbines). Sticks should be fastened
no less than in 4m in staggered rows
3.8.1.4.
The flights of the stairs within the shaft of the tower should be in
staggered rows. A construction of straight staircase with a closable hatch
device (in every 10m) by the resting platform is admissible. Platforms for
rest as well as for antennas’ and lighting’s AWL maintenance should have
the size no less than 0.5x0.5m, with a fence no less than 1.1m high (The
number of fencing elements should not be less than three, including
grabs, with the working platform distance of 0.1m, 0.5m & 1.1m)
3.8.1.5.
The platforms order should ensure convenience for maintenance and
free access to the antennas and AWL
3.8.1.6.
The hatch of the bottom platform should be equipped with closable
cover and have loops for lock in order to prevent tower access
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Documentation on Open RFP
December 13, 2010
3.8.1.7.
The landing desk should be made of grooved steel and perforated
plates with 20mm diameter holes (in that case the edges of the desk
should be framed by metallic angles in order to prevent causing injury to
the service personnel)
3.8.1.8.
Covers of all the hatches should be effectively fixed when opened
3.8.2. Cable ladder or constructions for cable fastening: straps from metallic strips
30x30mm with 0.6-0.7m spacing. AWL Cable fastening to the strips should
be done by metallic clamps
3.8.3. Cable trays system with protection against ice fall, to connect the tower to
the shelter
3.8.4. Anti-climbing device
3.8.5. Fall arrestor system (rail or wire)
3.8.6. Night beaconing system (including sensor, lights, control box, alarm
module…)
3.8.7. Lightning rod terminal (Franklin type)
3.8.8. MW and GSM brackets in enough quantities as to cope with the needs
3.8.8.1.
Pipe support for BS antennas with horizontal or vertical gap no less
than 3.5m for antennas with the 900 MHz, no less than 2m for antennas
with 1800MHz range (pipe supports for the BS antennas should be made
from pipes with the diameter 89x6mm and not less than 2.3m length)
3.8.8.2.
Pipe support (main and spare) for MW antennas should be made
from pipes with the diameter 114x6mm and with the length no less than
1.5m
3.8.8.3.
Construction details for fastening of fixing bars at the MW antennas
installation places with the diameter 1.2m and more
3.8.9. Self supported towers should have adapter technological plate for rest and
BS & MW antennas maintenance, at least one working platform each 10m
and one at the top
3.8.10. Anchors for the tower fixation in its concrete base
3.9.
3.10.
3.11.
3.12.
3.13.
All metallic elements shall be hot dip galvanized, with a minimum thickness of
100μm. Galvanization certificate for each tower shall be provided to the
Organizer
After galvanization any cutting, drilling, welding… is not acceptable
All bolts shall be stainless steel or hot dip galvanized grade 8.8 or better.
Bolted connection in set should include: bolt with washer on each side of the
contractible surfaces, nut and lock-nut. Fixing parts should have a certificate of
the manufacturing factory with the strength class mark, metalized cover type
and its thickness. The stamp of the manufacturing factory as well as the
strength class sign should be on the bolt heads
The towers should be factory made towers and the safe operation life of a tower
should be no less than 30 years from the moment of the tower installation in
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Documentation on Open RFP
December 13, 2010
case of periodic restoration of antirust covering of metallic constructions and
exploitation demands compliance
3.14.
Metallic constructions of the towers should be made with the accuracy that will
exclude any enforcement during their control assembling at the factory and
during the installation. Compression, thrust, bend, blow and other
enforcements, leading to the tensed and deformed condition within the
metallic construction, cold-hardening, cracks (or precondition for the cracks)
should be eliminated completely. It is not acceptable to widen the holes for
bolts by electric welding
3.15.
Flanged conjunctions should ensure tight joint of adjacent flanges surfaces. The
0.33m probe at the bolt tightened flange junction should pass through
flanges not deeper than 20mm around the all perimeter, and the local gap at
the outer edge along the circle of the flange of two adjacent sections should
be no more than 0.3mm. All the adjoined surfaces of the flanges should
ensure electrical contacts of tower lightning system. They should have
temporarily cover layer preventing corrosion during transportation
3.16.
The tower should be painted by signal painting and the quality of painting
should provide 5 year warranty for tower during which the required adhesion
should be preserved. The painting of BS metallic constructions should be
done only under plant conditions
3.17.
The results of tower metallic constructions acceptance control should be
entered in the certificate of steel construction manufacturing. The information
on the used steel and welding materials should be also entered in the
certificate as well as the results of welding connection control, antirust cover
control and control assembling. To the steel constructions certificate should
be attached a certificate for steel rent used during the metallic constructions
manufacturing
3.18.
The vertical check-up of the installed tower should be done after accomplishing
of the installation. The results of control of the vertically installed section
should be shown in the executive scheme of land-surveying control. The
deflection of the tower from the projected location should not be more than
0.001 (for the tower) from the height of the exact point over the base
(Relation of the top of the tower to its height)
3.19.
The Applicant should provide all necessary information regarding the
acceptable values of the deformations and shifts of tower, maintenance
terms and programs to be implemented during the exploitation and other
specific information necessary for safe exploitation of the towers
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Documentation on Open RFP
December 13, 2010
3.20.
The Applicant should provide a ten (10) year warranty for the towers
General Specification
For all technical specifications related to the infrastructure part (towers, masts, sites
construction…), it shall be considered that the Applicant will provide Equipment having
identical or better specifications than below mentioned ones.
1. Site Construction Specifications
1.1.
Generally, Applicant shall abide to the international standards and
recommendations for the construction of GSM/UMTS sites. However
Applicant shall abide also to the country standards relevant to safety,
electrical installation and civil construction
1.2.
Applicant shall abide to the following general requirements:
1.2.1. All metallic elements or accessories used on the site shall be hot dip
galvanized or stainless steel. The galvanization should be done according to
DIN 55928 and satisfy appropriate acting ISO Standards. The inspection
results should satisfy to DIN50976 and ISO 1461.
1.2.2. All used material shall be new and pre-manufactured. On site manufacturing
of any accessories (Connector, Support…) is totally prohibited.
1.2.3. As a general rule, materials used for pure civil construction shall be always
new and of first choice, they shall comply with the Armenian standards and
norms applicable for the considered use (Cement, Aggregates, Armature,
Water and etc.).
1.3.
The area allocated for the construction of the Greenfield shall be leveled
according to the requirements set in the project file.
The site contour shall be delimited by a fence. The fence shall have the
following minimum specifications:
1.4.1. All elements shall be made exclusively of hot dip galvanized material
1.4.2. The height of the fence shall be min 2m on top of which three rows of barbed
wires are installed
1.4.3. The double leafs gate shall have a minimum width of 3m
1.4.4. The padlock should be supplied with dedicated key and a master key.
1.4.
1.5.
All concrete jobs should be accomplished according to the relevant standards,
to the specification of the shelter’s base as set in the relevant project file.
1.6.
The entire surface of the site not covered by concrete shall be topped by a
gravel layer of a thickness not less than 20cm.
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December 13, 2010
Surrounding shall be reinstated to its initial condition after completion of the
construction works.
1.7.
As the Organizer is responsible for the supply of the electrical power up to the
site, he shall connect the power cable to the shelter’s main distribution box
inside the shelter. The power box shall have at least the following
specification:
1.8.1. A corrosion proof IP66 metallic box
1.8.2. An external socket for the connection of emergency generator
1.8.3. A 4 poles breaker
1.8.4. A power selector to switch between main power and generator
1.8.5. A 2 poles breaker for the night beaconing system (AWL)
1.8.6. Two additional 2 poles breakers for future expansion needs
1.8.
Used electrical power cable shall be 5x10mm²
1.9.
Ground and power cables shall be fixed with a step of 33cm (3 fixation per
meter)
1.10.
1.11.
Ground and power cables, if not fixed inside a cable tray, shall be protected by
a flexible metallic pipe whenever they are within a range of 3m of any
accessible point.
2. Shelters
2.1.
The shelter shall have an overall dimension of 4.3x2.6m. It shall be divided in
three rooms, one for the Telecom equipment, one for the generator and one
for the fuel tank
2.2.
Each of the three rooms should be accessible via an independent external door.
Door’s lock shall be supplied with dedicated keys and master keys
2.3.
The Shelter’s walls shall be modular sandwich-panel based.
2.4.
The wall composite shall provide a minimum λ-value (heat transmission
coefficient) of 0.034 W/m²K. The thickness shall be as required to fit the
framework, meet the dimension limits and fulfill insulation and stability criteria
2.5.
The door shall be of a size of 90x200 cm. The compound shall provide a
minimum fire resistance of 30 minutes and a maximum λ-value (heat
transmission coefficient) of 0.050 W/m²K. The doorframe shall be a welded
construction made from steel profiles
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Documentation on Open RFP
December 13, 2010
2.6.
The floor of the shelter shall be reinforced as to withstand the load of the
generator (Supplied by the Applicant within the scope of this RFP), the filled
fuel tank (Supplied by the Applicant within the scope of this RFP) and the
telecom equipments. However it shall be capable of carrying a load not less
than 10kN/m². It shall be possible to fix equipment to the floor by means of
bolts and/or screws
2.7.
The Floor shall provide a minimum fire resistance of 60 minutes and a
maximum λ-value (Heat transmission coefficient) of 0.034 W/m²K
2.8.
The floor covering shall be made from anti static industrial vinyl flooring
2.9.
The ceiling composite shall provide a minimum fire resistance of 60 minutes
and a maximum λ-value (Heat transmission coefficient) of 0.028 W/m²K. The
roof shall be capable of carrying a load of 1.5kN/m²
2.10.
The Shelter’s structure shall be made of hot dip galvanized steel
2.11.
The shelter shall be able to guarantee full operational capabilities of any part of
equipment that is mounted in it up to a wind speed of 160 km/h
2.12. The shelter shall be equipped at least with the following accessories:
2.12.1. Electrical main distribution board, with electrical surge arrestors. Breakers, in
number and in rating, shall be dimensioned according to the requirement of
the vendor, of the suppliers of any built in equipment as well as the
consumption of the different accessories
2.12.1.1. The PDB should be compact in order to fix it on the wall
2.12.1.2. Mechanical disconnector should be used in parallel with the electrical
one
2.12.1.3. All breakers, relays, disconnectors, should be well known brands
(ABB, Merlin Gerin, Legrand …)
2.12.2. Fire panel with adequate detectors for each of the three rooms. It shall be
able to generate alarms (to be connected to the main control system)
2.12.3. Sensors for alarms generation (Intrusion, High Temperature …)
Detectors (2 detectors per room):
 Equipment room: Ion smoke and optical smoke detectors
 Generator room: Ion smoke and optical smoke detectors
 Fuel tank room: fire and ionic smoke detectors
2.12.4. Indoor cable tray
2.12.5. Ground ring for each room
2.12.6. Telecom and power watertight cable entries
2.12.7. Power sockets
2.12.8. Cable management system for the shelter cables
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2.12.9. Internal lighting in each of the three areas with at least 200lux of illumination
2.12.9.1. The illumination system in the BS shelter should be done by cables
and wires with copper fibers which don’t spread burning. The system
laying should be made through ducts and cable trays.
2.12.10. External lights with movement detectors installed above each door
2.13.
Two split air conditioners shall be provided for the temperature control of the
equipment room. They shall be able to switch automatically between cooling
and heating according to the room temperature.
2.14.
The air conditioners shall be dimensioned according to the power dissipation of
the different equipment installed in the room and the external environmental
conditions of the country.
The two air conditioners shall be controlled by a control box that allows the
minimum following functionalities:
2.15.1. Alternation of the operation of the two units
2.15.2. Activation of the two units in case of high temperature inside the shelter
2.15.3. Generation of alarms in case of a faulty air conditioner.
2.15.
The generator shall be powered by a low consumption diesel engine. The
generator rating shall not be less than 20 KVA. It shall be equipped with the
following accessories:
2.16.1. ATS (Automatic Transfer System)
2.16.2. Battery charger (Lovato Electric BCE-06)
2.16.3. Heaters (Water, Oil …) as to ensure the normal operation in a subzero
environment, specific to RA.
2.16.4. Automatic starter
2.16.5. Alarm Module
2.16.
2.17.
The engine should be water cooled; accordingly the generator room shall be
fitted with openings dimensioned according to the needed airflow.
2.18.
The fuel tank should have a total capacity of not less than 2000L. It should be
able to generate a low fuel alarm.
3. Lightning and grounding
3.1.
Grounding and lightning systems should be planned for BS. Generally,
Applicant shall abide to the international standards and recommendations for
the construction of a grounding system. However Applicant shall abide also
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Documentation on Open RFP
December 13, 2010
to the RA standards relevant to safety and electrical installations. Projection
of grounding devices of electrical equipment should be done in accordance
with the standards (GOST 12.1.030-81).
3.2.
For each site the implemented grounding system should be less than 4Ω. It
shall consist of at least 8 rods for the Greenfield site. The value should be
measured with all the equipments and elements of the site disconnected.
3.3.
Ground measurement certificate issued by a certified entity in the country shall
be submitted for each site.
3.4.
The grounding system shall be at least 60 cm deep in the ground. The Applicant
shall ensure that the surface is reinstated to its initial state (Asphalted if
asphalt, tiled if tile …)
The grounding material can be either hot dip galvanized or cuprum. However
Applicant shall not use in his grounding system a combination of the two
metals and that to avoid galvanic corrosions. Still the Applicant shall abide to
the following specifications:
3.5.1. Earth rods shall be 2m long and have a diameter greater than 20 mm
3.5.2. Rectangular or circular plate electrodes should present a minimum of 0.5 m2
of surface contact with the soil. Iron or steel plates should be at least 3 mm
thick, and non-ferrous metals should be at least 5 mm thick
3.5.3. Underground cuprum cables shall be rigid bare with a section of 50mm2
3.5.4. All underground connections shall be exothermic ones (Cadweld…)
3.5.5. Main ground cable, shall be stranded, insulated with a green yellow sheath
and a section of 50 mm²
3.5.6. Distribution grounding cables shall be stranded with a green yellow sheath
and a section of 16 mm². All metallic elements of the site shall be connected
to the ground system
3.5.7. All metallic elements shall be connected to the grounding system
3.5.8. All above ground cables shall be terminated with compressive lugs.
Mechanical lugs are not acceptable.
3.5.9. Ground bars should be fitted in the site, to ensure the connectivity of the
site’s elements to the grounding system, the ground bars should be
distributed as follows:
3.5.9.1.
Main Ground Bar located outside the shelter to connect the other
secondary ground bars
3.5.9.2.
Ground bar located on the outside of the shelter under the Telecom
cables entry for cables grounding
3.5.9.3.
Main Ground bar located in the Telecom room for the Telecom
equipment connection
3.5.9.4.
Ground bar located inside the shelter under the Telecom cables entry.
3.5.
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Documentation on Open RFP
December 13, 2010
3.5.9.5.
Ground bar in the generator room which connect the Generator
grounding to the Main Ground Bar.
3.6.
The grounding system should have covered pit for grounding, the pit shall
house ground bars to connect related incoming cables.
3.7.
3.8.
It is forbidden to use a closed path for protecting grounding system.
The protection from the carrying of high potential to the shelter should be done
according to the following documents RD 34.21.122-87 (СО 153-34.21.1222003)
All the elements of antenna and feeder channel should be connected to the
grounding protection system through cut off points provided by the
manufacturing company for such cases.
3.9.
4. Certificates and other documents
Applicant shall include in its proposal a full set of technical documents and
brochure for all the equipments and accessories he is proposing.
4.2.
The appropriate project file should be developed based on the Site survey
report approved by the client. The project file shall abide to the country
standards and regulations and shall include but not be limited by:
4.2.1. The general plan(s) of the area where the site is constructing with site
marked on it,
4.2.2. Technical drawings, maps, diagrams, texts and other guides for construction
and assembly.
4.2.3. The results of engineering investigations (required for civil construction)
4.2.4. Technical permissions, conditions, technical expertise acceptance and other
documents proving the compliance of the project file for the laws, standards,
norms and regulations acting on the territory of Republic of Armenia
4.2.5. Technical specifications of the tower, shelter and other supplied equipment
4.2.6. Stability study
4.2.7. The supplied project files to be transferred to the client should be at least in 4
hard copies and a soft copy by AUTOCAD (.dwg) file.
4.1.
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