1. home and garden
2. home furnishings
3. lamps and lighting

Edge Hill University
Student Accommodation Phase 10
Electrical Services Scope of Works
AMP010_ESPC
Revision
T1
Date
Dec 14
Description
Tender Issue
General
Project Description
The residences phase 10 project comprises 1No new build accommodation buildings
incorporating the following:Block A
Ground floor – 8 bedrooms, 1 kitchen/lounge.
First floor – 8 bedrooms, 1 kitchen/lounge.
Second floor – 8 bedrooms, 1 kitchen/lounge.
Block B
Ground floor – 16 bedrooms, 2 kitchen/lounge.
First floor – 16 bedrooms, 2 kitchen/lounge.
Second floor – 16 bedrooms, 2 kitchen/lounge.
Block C
Ground floor – 16 bedrooms, 2 kitchen/lounge.
First floor – 16 bedrooms, 2 kitchen/lounge.
Second floor – 16 bedrooms, 2 kitchen/lounge.
Block D
Ground floor – 8 bedrooms, 1 kitchen/lounge.
First floor – 8 bedrooms, 1 kitchen/lounge.
Second floor – 8 bedrooms, 1 kitchen/lounge.
The site is located within the existing Edge Hill Campus, Ormskirk.
Site Address: Edge Hill University
St Helens Road
Ormskirk
Lancashire
L39 4QP
Part L
It is a requirement of the project to achieve compliance with Part L regulations.
Design
This specification is intended as a performance design specification for Block B. The
electrical sub-contractor shall develop this design for the remaining blocks.
Building Services
The electrical contractor shall be responsible for and include all costs for the design, supply,
storage, erection, connection, testing, commissioning, instruction of staff and co-ordination of
the complete works described herein and detailed on the design intent drawings, schedules
and Architect’s drawings. The electrical systems include:•
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LV distribution & containment
General and emergency lighting
General small power & containment
IT cabling & containment
TV distribution
Access control
Fire detection systems
Earthing & bonding
Lightning protection
References shall be made to:
• Building Regulations (In Particular Part L2)
• Health and Safety at Work Act
• Relevant British Standards
• Relevant Standards Issued by Public Undertaking Authorities
• BS7671:Requirements for Electrical Installations
• CIBSE Lighting Guide LG3
• CIBSE Lighting Guide LG5
• CIBSE Lighting Guide LG7
• CIBSE Code for Lighting
• BS EN12464
• BS 8300: Design of buildings and their approaches to meet the needs of disabled
people –Code of Practice.
Builders Work
The electrical sub contractor shall be responsible for providing all builderswork attendance for
small bore holes through walls/floors, equal to or less than 300x300, including making good
and fire stopping, and all chases etc associated with the electrical installation.
Major builders work items including large holes, plinths, etc shall be carried out by the main
contractor.
The electrical sub contractor shall be responsible for providing all necessary steelwork
supports and bracketry associated with the installations. All steelwork supports and bracketry
shall be galvanised.
Commissioning and Handover
The electrical sub contractor shall fully test, commission and demonstrate to the client the full
installations and ensure that records are available prior to offering the systems for inspection
to the client or the client’s representative. Pre handover and seasonal commissioning shall
also be carried out.
The systems will not be accepted by the client until appropriate documentation is available
and as such the defects liability period will not be deemed to commence until the systems are
accepted.
Full and comprehensive record documentation shall be provided prior to handover, as
detailed elsewhere with the specification.
Trenches / Pipeways / Pits for Buried Engineering Services
System Description:
The excavation of service trenches and provision of service entries into each
residential block will be undertaken by others under a separate enabling works
package.
LV Distribution
System Description
Electrical Supply Characteristics
Voltage:
Frequency:
Phases:
Earthing:
Max disconnection time:
Shock protection:
Temperature:
400/230V
50hz +/- 1%
3 phase 4 wire
TN-S (neutral earth link within low voltage switchboards
5 seconds
Direct contact – insulation of live parts & segregation/
enclosures.
Indirect contact – earthed, equipotential bonding & automatic
dis-connection of supply.
Low voltage Switchrooms 5 ºC to 40 ºC
Protection against indirect contact is by earthed equipotential bonding and automatic
disconnection of supply system in accordance with the 17th edition of the IET regulations.
In this section the electrical contractor shall include the, supply, delivery, off loading,
installation, testing and commissioning of the complete LV distribution system as a whole,
including interfacing with other contractors. In general the systems shall consist of all the
equipment, wiring, containment systems, accessories and support systems.
Phase 10 Incoming LV Supplies
The supply and installation of the Phase 10 incoming LV supply cables will be
undertaken by others under a separate enabling works package. The Phase 10
electrical contractor shall be responsible for terminating these LV supply cables onto
the Phase 10 main TPN distribution boards.
Phase 10 LV Distribution Arrangement
The Phase 10 LV distribution arrangement will be for 1No. main TPN distribution board to be
located in the Block B electrical riser at ground floor. This main TPN distribution board will
then supply SPN sub-distribution boards to serve each floor within each Block, as indicated
on the LV distribution schematic.
The electrical contractor shall incorporate all equipment, accessories, controls, supports and
ancillaries implicitly or explicitly required either by the specification and drawings, or in
accordance with accepted current practice and procedures, which after assembly, testing and
commissioning will enable the works to function correctly and to achieve the specified
performance.
Metering
Sub metering shall be provided in accordance with Part L requirements, separate sub metering
shall be provided as indicated on the LV distribution schematic. All metering shall be required to be
linked back to the BMS software.
LV Cabling (Sub-mains Distribution Cabling)
All low voltage cabling shall be of the type indicated on the design intent drawings and cable
schedules.
All cables shall be XLPE/SWA/LSF type installed on heavy duty cable tray. The cable tray shall be
finished in hot dip galvanised coating to BS EN ISO 1461. The cabling shall be fixed to the cable
tray with two piece, two fixing design aluminium cleats.
Cables shall be installed on the cable tray in single formation and bunching/layering of cables shall
not occur.
Low Voltage Distribution Boards
LV distribution boards shall be supplied and installed in the locations as indicated on the LV
distribution schematic and layout drawings.
All distribution boards will be complete with integral isolators rated to at least the same capacity as
the supplying protection device. The main TPN distribution boards will be provided with 200A three
phase switch dis-connectors/isolators to enable the larger cable sizes to be terminated.
Distribution boards shall incorporate fixed cover with a hinged access door with suitable dustproof
seals and facilities for locking comprising a recessed lock provided with two keys. Each board shall
have insulated protective shields to prevent accidental contact with live parts.
Where indicated the outgoing ways of all distribution boards shall be protected with MCB circuit
breakers and shall be equipped with a top section, horizontal compartment for ease of control
wiring and equipment. The top section shall contain time switches, contactors, RCD protection
units and outgoing terminals, as necessary. This will alleviate utilising distribution board way
‘spaces’ for ancillary equipment.
Equipment Identification
The distribution boards shall be fitted with suitably engraved, laminated plastic labels to each
component and secured by plastic rivets.
All items of equipment shall be clearly and permanently labelled.
• Labels shall be made from Traffolyte, or similar sandwich type material,
comprising white/black/white laminations for normal supplies and white/red/white
laminations for emergency supplies e.g. fire.
Inscriptions shall be formed by engraving through the top white layer to expose
black lettering.
• Permanent electric shock and danger notices shall be provided at each main
electric equipment location i.e. electric riser cupboards, plantrooms etc.
• The fire alarm system main isolating switch label at the main switchboard shall be
coloured red and clearly labelled 'FIRE ALARM: DO NOT SWITCH OFF'.
• The cable colours shall be in accordance with the new “Harmonised” cable
colours as noted within the IEE wiring regulations (L1, L2, L3 etc) R, Y and B
shall not be utilized.
Testing and Commissioning
Testing and commissioning shall be undertaken in accordance with the BS 7671 Requirements for
Electrical Installations (the IETWiring Regulations), the appropriate British Standards and Codes of
Practice and the requirements contained in IET Guidance Notes Number 3 Inspection and Testing.
Full test procedures shall be provided in advance of the testing for comment from the design team.
Testing Requirements
If any test(s) fails to meet the requirements of the specification, corrective action shall be taken by
the manufacturer. Once completed the tests shall be repeated to the satisfaction of the Engineers
and Client. If the defect is a fundamental problem that in the opinion of the Engineer could have
had an effect on other tests conducted - the entire testing programme shall be repeated at no cost
to the contract.
All costs associated with the above tests including those for all test equipment shall be included in
the electrical contractor tender sum.
General Lighting
System Description
In this section the electrical contractor shall include the supply, delivery, off loading,
installation, testing and commissioning of the complete lighting system as a whole, including
interfacing with other contractors. In general the systems shall consist of all the equipment,
wiring, accessories and support systems.
The lighting systems shall be designed, supplied and installed in accordance with the
following:• CIBSE Code for interior lighting
• CIBSE Code for external lighting
• CIBSE LG3
• BS 5266
• BS 7671 Regulations for Electrical Installations
General
All lighting locations shall be co-ordinated with the Architect’s reflected ceiling plans.
All lamps to be used on this project are detailed within the luminaire schedule/drawing. Where
a choice of manufacture is offered the electrical contractor shall use that manufacturer for all
lamps of that type on the whole project. Where fluorescent or high intensity discharge lamps
are specified the electrical contractor shall be responsible for ensuring that lamp chosen is
fully compatible with the luminaire. In rooms that have more than 2 luminaires the electrical
contractor shall ensure that all lamps are obtained from the same production batch.
All ceiling mounted luminaires will be connected to the wiring system by means of multi-core
flexible LSF insulated cables and plug in ceiling roses. The length of the flexible cable will not
exceed 3m.
Wherever possible, all final circuit cabling will be either concealed within the building fabric, unless
otherwise stated. The lighting circuits will generally be supplied from the local distribution
boards/consumer unit serving the dedicated area on that floor.
Luminaires fitted in plaster board ceilings shall have the wiring terminated in accessible
ceiling areas.
Before ordering the electrical contractor shall ensure that the luminaires chosen are suitable
for the particular ceiling being installed. The ceiling details shall be checked with both the
Architect and Management Contractor.
Sample luminaires shall be offered to the Architect, Engineers and Client for review before
any ordering takes place.
All luminaires shall be re-lamped by the Electrical Contractor immediately before handover.
Lighting Concept
The lighting installation will generally consist of:Bedrooms
Lighting in these areas shall generally be a combination of surface mounted LED luminaires with
polycarbonate tamper resistant diffusers c/w high frequency control gear. Integral
fluorescent luminaires shall be provided within desk furniture by the specialist.
En-suite WCs
Lighting within en-suite WC’s to be provided integral to the ‘pod’ by the specialist.
Main Entrance, lobby area & stair cases
Lighting in these areas shall generally be surface mounted fluorescent luminaires with
polycarbonate tamper resistant diffusers c/w high frequency control gear.
Lounge/ Kitchen
Lighting in these areas shall generally be a combination of recessed LED downlights and
suspended LED pendant luminaires with polycarbonate tamper resistant diffusers c/w high
frequency control gear.
Corridors
Lighting in these areas shall generally be surface mounted fluorescent luminaires with
polycarbonate tamper resistant diffusers c/w high frequency control gear.
Store rooms/ cleaners rooms
Functional lighting in these areas will generally be from surface mounted fluorescent luminaries
complete with opal diffuser and high frequency electronic control gear.
External Lighting
External lighting will consist of a wall mounted luminaire located outside the entrances into each
block.
Lighting Control
The lighting within stairwells, lobbies, entrances shall be controlled via automatic presence
detection. This shall be in the form of semi-recessed microwave technology.
The lighting within bedrooms, en-suites and kitchens/lounges shall be controlled via manual
switching with absence detection.
External lighting shall be controlled via photocell and timeclock.
Wiring
The electrical contractor shall be responsible for providing all necessary 230V power supplies,
contactors, control circuitry, photocell etc., to luminaires and associated equipment, to provide
a complete working system.
Wiring within the building shall be 1.5mm 6242B twin and earth cabling ‘loop in’ cable circuits
supported to structure throughout. The electrical contractor shall co-ordinate all routes with
the building structure/fittings along with the M & E installations.
Electrical Accessories
In general all areas shall have flush recessed accessories, except in plantrooms. All flush
accessories shall be white PVC with a removable cover plate and fixed grid.
All surface mounted accessories shall be of a metal clad type finish.
All accessories shall be from a common manufacture and be of a common design.
Engraving Accessories
All light switches with multi gang arrangements shall be engraved to identify their switching
arrangements.
Testing and commissioning
The presence/absence detection system must be set-up/ programmed and commissioned by
the lighting control specialist, the contractor should allow for this within the tender sum and
ensure that the required commissioning time is allowed and costed for. It is important to note
that the contractor should consult and
follow the specialist installation guidelines for the installation of the system to ensure it is
installed to their requirements. Client training should also be included so the estates team
understand how to operate and maintain this equipment.
Approval
The electrical contractor shall submit samples of the following for approval:
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Each type of luminaire, including emergency versions of normal luminaires. Samples shall
be ‘working’, fitted with the specified lamps, remote control gear (where required) and
proposed fixings.
Each type of switch / lighting control device(e.g. PIR’s).
The electrical contractor shall co-ordinate the locations of luminaires within plantrooms with
the final locations of pipework and ductwork. It shall be ensured that luminaires are located
such that they can be maintained by personnel using ladders from directly below.
General Power
System Description
In this section the electrical contractor shall include the supply, delivery, off loading, coordination,installation, testing and commissioning of the small power installations indicated on
the design drawings and outlined within this specification. All components necessary for a
safe, fully functioning, easily maintainable installation shall be included whether or not
specifically indicated. These systems shall include, but not be limited to, all wiring, final
containment, distribution boards, consumer units, accessories and support
systems. The main LV distribution/containment systems are described within other sections of
this specification.
General
Unless otherwise indicated the Architect shall determine the exact position of all outlets,
DO NOT SCALE FROM DESIGN DRAWINGS.
Fire barriers shall be provided in all areas where containment/cabling etc penetrate a fire zone.
Typical final general LV radial circuits shall be designed in accordance with the IET regulations.
Protective Device & rating Circuit type Cable type Minimum Cable size Maximum area served by one circuit -
20A 30mA RCBO
Radial
6242B twin and earth cabling
4 mm (Including CPC)
50m
Protective Device & rating Circuit type Cable type Minimum Cable size -
10A type ‘C’ MCB
Radial
6242B twin and earth cabling
2.5 mm2 (Including CPC)
Wall mounted socket outlets, fused connection units, isolating switches etc shall be mounted at
heights to comply with Building Regulations Part M.
Single and Three Phase Fixed Equipment
Fixed equipment shall be served by fused connection units (FCU's) or local isolating switches.
FCU's shall be arranged for flex outlet or direct rear entry connection to suit the equipment and as
indicated.
All isolating switches shall:
a) Be of the rotary type
b) Be pad lockable in the off positions
c) Be suitable for continuous (24 hour) AC23 duty at the current rating of the feed protective device
d) Be mounted in steel enclosures
e) Be rated to switch equipment transient loads (e.g. motor starting currents, discharge lighting
surges etc.)
Cooker control units including switches, neon indicator lamps and flex outlets shall be
provided in the locations identified on the layout drawings.
Wiring
The electrical contractor shall be responsible for designing and supplying and commissioning
230/400V power supplies to all fixed equipment, socket outlets, fire alarm equipment (including
electronic door release/ controller units, fire alarm panels), gas solenoid shut off valves, equipment
as indicated on the drawings and schedules.
Wiring shall be 6242B twin and earth cabling mounted on tray or basket, or XLPE/SWA multi-core
cabling as indicated otherwise on the drawings and schedules.
The following cabling types shall be utilised:
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FCU's (flex outlet) - LSF/LSF flexible multi-core cable (heat resisting type EPR/CSP
where applicable) Maximum length 500mm.
FCU's (direct entry) - 6242B twin and earth cabling (termination box to suit equipment).
Isolating Switches - 6242B twin and earth cabling.
Each back box shall be a minimum of 35mm in depth and capable of receiving Category 6 cabling
for termination onto RJ45 socket outlets.
Mechanical plant wiring and containment systems
The electrical contractor will liaise with the mechanical contractor on the number and
specification of supplies required and providing a system design that accommodates all
mechanical requirements
The mechanical contractor will provide all power, controls wiring and containment systems
from the local mechanical control centre (MCC).
Each back box shall be a minimum of 35mm in depth and capable of receiving Category 6 cabling
for termination onto RJ45 socket outlets.
Co-ordination
The electrical contractor must include for the detailed co-ordination of all small power services with
the Architects floor and furniture setting out details and other services. The drawings show outlets
at desired locations as detailed on the architectural loaded plans. Once a furniture layout is
produced the contractor will be responsible for producing a co-ordinated design that will ensure all
client power supplied are in the correct locations to comply with the final architectural elevations.
Electrical Accessories
In general all areas shall have flush recessed accessories, except in plantrooms.
All surface mounted accessories (within plant areas) shall be of a metal clad type finish.
All accessories shall be from a common manufacture and be of a common design.
Engraving Accessories
In general all accessories within plant spaces and in ceiling voids shall be shall be engraved with
the source distribution board circuit reference.
All fused connection units shall be engraved with the their use/duty i.e. ‘WATER BOILER’, ‘HAND
DRIER’ or ‘SHAVER SOCKET’.
Distribution boards, isolators, etc. shall be engraved with their reference/circuit reference.
All labels shall be red engraving on white Traffolyte plates secured in place with brass self tapping
screws.
Testing and Commissioning
Testing and Commissioning of the small power systems shall be undertaken in accordance with
the BS 7671 Requirements for Electrical Installations (the IETWiring Regulations), the appropriate
British Standards and Codes of Practice and the requirements contained in IET Guidance Notes
Number 3 Inspection and Testing.
Emergency Lighting
System Description
The electrical contractor will supply, install, test and commission a complete emergency lighting
system. The system will be provided throughout to comply with the requirements of BS5266-1 to
Maintained 3-hour duration. The emergency lighting installation shall generally be integrated into
the general lighting system and shall consist of self-contained, non-maintained luminaires fitted 3
hour duration emergency conversion packs.
Emergency luminaires will be provided in all escape routes, in accordance with BS5266, parts 1 &
7 and as required by the Building Control/Fire Officer.
Emergency luminaires shall also be provided internally and externally above all final escape doors.
All emergency luminaires shall be wired on the local lighting circuit.
Key switches will be provided to facilitate testing of the emergency lighting. These shall be of grid
switch arrangement and located adjacent the distribution boards within the electrical
risers/cupboards
TV/Radio
System Description
The electrical contractor shall be responsible for employing a specialist UHF/FM/Satellite TV
contractor to design, supply, install and test a complete MATV [Master Antenna Television]
system is to supply Digital Terrestrial Television [DTT] and FM/AM radio to the student
accommodation buildings.
The main aerial shall be installed in within the roof void in a position agreed for suitable signal
strength. The aerial shall be set for optimum performance in the designated position.
First grade low loss coaxial cable shall be installed from the position of the main aerial to the main
distribution amplifier located within the roof void.
The locations of the UHF/FM outlets are detailed on the design intent drawings.
The system shall be designed to comply with CTVR1/1, BS513 and BS EN 50083-1 and should be
designed to distribute the following signals to all outlets:
1) BBC1 – 625 Lines – Channel 26 Mono and Colour.
2) BBC2 – 625 Lines – Channel 33 Mono and Colour.
3) ITA – 625 Lines – Channel 23 Mono and Colour.
4) ITA2 – 625 Lines – Channel 30 Mono and Colour.
5) CH5 – 625 Lines – Channel 37 Mono and Colour.
6) All ‘free to View’ Channels.
7) All available AM/FM Radio signals.
The system shall be capable of receiving a satellite signal input and distribute the signal to all
outlets without the need of purchasing additional equipment at a later date.
The electrical contractor shall provide power outlets to the specialist requirements.
Data Transmission
System Description
Below are the outline principles of the required data system.
The Phase 10 residential buildings shall be provided with a new structured cabling system
(SCS) based on standard Cat 6, with universal RJ45 outlets provided throughout the building
to serve voice, data and other applications.
The system shall be the wiring of outlets throughout the new buildings from data cabinets
located in dedicated rooms beneath the staircases which shall serve each Block as follows:Block A data cabinet – to serve Block A
Block B data cabinet – to serve Block B
Block C data cabinet – to serve Block C
Block D data cabinet – to serve Block D
Incoming fibre and copper cables to these data cabinets shall be undertaken by others
under a separate enabling works package.
The SCS system shall be supplied, delivered, tested, commissioned, configured and handed
over by Edge Hill University approved specialist contractor.
This scope of works deals solely with the structured cabling system and related items. Areas
surrounding the active data & voice network equipment are to be provided in separate
specifications.
However the following is a high level overview to assist with the understanding of those
specifications.
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CAT 6 structured cabling system (SCS)
The internal voice system is to be based upon a voice over IP network
Standards
There are three bodies that publish relevant standards in relation to structured cabling
systems, namely:
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European Committee for Electrotechnical Standardisation (CENELEC) - European
Telecommunications Industry Association (TIA) - American
International Organisation for Standardisation (ISO) – International
The SCS contractor shall work in accordance with the following European standards and all
standards that are referenced within.
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BS EN50173:2002 – Information Technology – Generic Cabling Systems.
BS EN50174:2001 – Information Technology – Cabling Installation Part 1.
BS EN50174:2001 – Information Technology – Cabling Installation Part 2.
BS EN6701:2004 – Telecommunications equipment and telecommunications cabling
– specification for operation and maintenance.
The SCS contractor shall work in accordance with:BS7671 – Requirements for Electrical Installations – IET Wiring Regulations.
Fully compliant with the fibre optic industry association (FIA) code of practice for the
installation of fibre cables.
• HGN – SCS for IT Systems.
All relevant labelling, documentation, testing criteria and warranties shall be met.
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Specific cabling standards
The SCS contractor shall supply, install and test a structured cabling system based on the
Category 6 standards. The entire structured cabling system, from a single major manufacturer
as specified shall be Cat 6 compliant i.e. outlets, cables, panels, etc.
The SCS contractor shall work in accordance with the manufacturer’s guidelines and
recommendations for their proposed solution.
The SCS contractor shall provide a Major Structured Cabling Manufacturer warranty for the
complete structured cabling system.
The duration of the warranty shall be from the handover date of the completed system for a
minimum of 20 years.
Outlets
Outlets shall be shuttered RJ45 snap in module type, wired to 568b.
Face plates shall be white plastic inclusive of clear plastic window for label containment.
Labels to be pre-printed not hand written.
A minimum of two RJ45 outlets shall be provided per faceplate.
The containment and back box provision will be provided as part of the Electrical Contractor’s
scope of work. However, it shall be the SCS contractor’s responsibility to ensure the
appropriate containment and back boxes are installed suitable for the cabling provision. This
should take into account the characteristics of Cat 6 cabling (i.e. bend radius, back boxdepth
etc).
Containment to back boxes shall be via dedicated conduit drops to the back boxes which
shall be finished flush with the building fabric/dado trunking. There shall be a maximum one
cable per conduit
Containment shall have 25% spare capacity.
Patch cords
Patch Cords shall be colour coded for each service (i.e. grey for data, blue for voice etc) &
uniquely numbered
Edge Hill University Scope of Works
Edge Hill University scope of works shall consist of the following:•
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Incoming fibres (voice & data) cabling into the buildings including final terminations.
Provision of all network cabinets
Provision of all active IT equipment.
Provision of required rack mounted UPS units.
All final connections between switches/racks etc.
Provision of all PC’s, telephone equipment etc.
Maintaining existing sites / phasing to new building.
Access Control
System Description
The electrical contractor shall design, supply, install, integrate and co ordinate, test and
commission the complete integrated access control systems for the building and provide all
necessary interfaces for remote monitoring purposes.
Access control overview
The main objectives of the access control and intercom system are to assist with controlling
student access to designated residences. The access control system shall have the functionality to
programme selected smart cards to access certain areas.
The system is to be split into two parts but be fully integrated and compatible as one –
1) General access control system (external doors & flat doors)
2) Accommodation access control system (bedroom doors only)
Users shall have the facility to access the building by presenting their proximity card to the card
reader; this shall unlock or open the associated door, allowing entry to the area. (When and if
access has been authorised as above).
There will be several levels of access which will be managed by the staff utilising the card issuing
equipment at the main reception, these shall include but not be limited too
1) Staff access (Permanent smart card issue to grant access to all areas at all times)
2) Residential users (Permanent smart card issue, with access to external residence door, flat door
and one bedroom)
Card issuing and card holder management
The new card access system for Phase 10 shall be fully compatible and integrated with existing
issuing and programming equipment currently used for the previous residence phases. This
equipment communicates remotely to the accommodation access control readers by utilising the
computer data network. Designated IT network points will be provided adjacent to the access door.
General access control system
The system is to be supplied with all equipment, hardware, software, cabling and ancillary services
as required to provide an integrated system complete and functional in all respects.
It is the responsibility of the tenderer to obtain clarification of all matters in which doubt exists as to
the exact intent of this document or in which a conflict appears to have arisen. Such information
must be obtained prior to the closing and lodging of tenders.
The response shall clearly detail all pricing for components, cabling, installation, engineering,
training, commissioning, setting to work, and 12 months comprehensive warranty.
The tenderer must include as part of the tender submission a complete, clause-by-clause
response.
Access control for a door shall allow for the following features where specified:
1) Push button request to exit shall record the exit in the event database. The button shall also
break power to the lock to ensure safe exit.
2) Entry and exit methods each record the event in the event database.
3) The door shall be monitored for both door open/closed and door unlocked/locked using
concealed monitor switches appropriate for the door installation.
4) Where the door is a double door, the inactive door leaf shall also be monitored for door
open/closed and door unlocked/locked. The inactive leaf door monitor switches may be
connected as part of the active door leaf monitoring.
5) It shall be possible to configure the door in a way that generates a forced door alarm should the
door be unlocked and/or opened without reference to the system.
6) Should a door be left unlocked or open after a preset time (up to 9999 seconds), an alarm shall
be generated reporting the condition.
7) The door open/unlocked warnings shall provide an audible warning at the door.
8) It shall be possible to disable the reader audible warning.
9) It shall be possible to generate the audible warning via a relay connected elsewhere in the
system.
10) Should a valid request to access a door be generated and access not taken, it shall be
possible to ignore the request (not record it as an event) and automatically re-secure the door
after a preset time.
11) When a valid access through a door is undertaken, the door shall immediately re-secure on
reclosing.
12) Proximity access reader or reader’s as specified on the layout design drawings
13) Emergency release switch input
14) Push button request to exit
15) Emergency exit break-glass
16) Power supply units
17) Door controllers
18) Magnetic lock to suit the door type and size (provided by the electrical contractor) Please also
refer to the ironmongery and door schedule issued by the Architect. This shall be free issued to
the main contractor for fitting to the door furniture
External access control system (External doors)
The external card readers shall be provided as follows:
1) Sealed to IP65 for external environment
2) Vandal resistant and robust yes aesthetically pleasing
3) Sterile
4) Complies with Part M building regulations
5) Audible confirmation of successful entry
6) Colour coded LED indication of successful entry
7) As Morley electronics (Mv-3 Versatile reader) or equal and approved
Flat access control system (Flat doors to each set of bedrooms)
The internal card readers shall be provided as follows:
1) Semi-flush mounting
2) Vandal resistant
3) Sterile
4) Complies with Part M building regulations
5) Mifare card compatible
6) Audible confirmation of successful entry
7) Colour coded LED indication of successful entry
Bedroom access control system (Individual bedroom doors)
The bedroom card readers shall be provided as follows:
1) Stand alone, with integral AA batteries
2) Provided with emergency/ master card for misplaced or lost cards
3) Finish to be agreed with the architect
4) This system is to be co-ordinated with the architect and door furniture in advance of any
installation
5) Vandal resistant
6) Sterile
7) Complies with Part M building regulations
8) Mifare card compatible
9) Proximity entry rather than card insertion
10) Audible confirmation of successful entry
11) Colour coded LED indication of successful entry
12) As Tyco SMF SmartLock systems or equal and approved
Fire Detection and Alarm
System Description
General
The Phase 10 residential buildings shall be provided with a fully addressable fire detection and
alarm system. The fire detection and alarm system shall be designed in accordance with BS 5839
to provide a category L1 system incorporating automatic fire detectors throughout all areas of the
building. Automatic detection shall be required in all ceiling voids where the void is greater than
800mm as stated in BS5839.
The electrical contractor shall employ a specialist sub-contractor to design (including zoning),
supply, install and commission a complete fire alarm and detection system. The specialist subcontractor shall also demonstrate the system to the satisfaction of the users. The complete works
described herein:•
•
•
•
•
•
•
•
•
The supply and installation of fully distributed networked analogue addressable multilooped and zoned fire alarm & detection system serving the Phase 10 residential
buildings.
The system shall be Category L1 system throughout.
Phased alarm and evacuation signals shall be provided by the use of electronic loop
powered sounders.
The electrical contractor shall include for all components and associated power supplies
to provide a complete working system.
The electrical contractor shall supply and install all necessary containment systems and
make due allowance for full co-ordination of this containment. Containment shall be in the
form of galvanised cable basket provided where more than two cables are routed
together.
Testing and commissioning.
System demonstration to Edge Hill University Fire Officer and Fire Officer/Building
Control.
Record Documentation, Maintenance Manuals andWindows based Colour Graphics
System.
Training of staff.
The new fire alarm and detection system shall comprise of fire alarm analogue addressable
panels, automatic high performance point detectors, manual call points, audible and visual alarms
and associated ancillary equipment, generally as indicated on the drawings. Further to the design
intent drawings and specification, the electrical contractor shall finalise the cause and effect charts
and operations of the fire alarm and all associatedsystems.
The electrical contractor shall include for sufficient detection/alarm/interface loops to provide a
complete system with 10% spare loop card capacity provided for future use. In addition to the loop
card capacity, 20% minimum loop addresses shall be provided as spare and being retained for
future use on each loop installed under the contract.
Control and Indicating Equipment
The fire alarm panels shall form the central processing unit of the new-networked fire alarm
system, receiving and analysing signals from fire detection sensors, providing audible and visual
information to the user, imitating automatic alarm response sequences and providing means by
which the user interacts with the system.
The control and indicating equipment installed throughout the development shall be
microprocessor based and shall operate under a multitasking software program, which must be in
easily up-datable non-volatile memory (EEPROM).
The system shall operate from a 230V 50HZ mains supply in operation.
The fire alarm panels shall have the following main indications/functions: •
Isolate Sounders
•
•
•
•
•
•
•
•
•
•
•
Power fault/failure
Evacuate signal
Test Lamps
Silence fault
Silence alarm
Reset alarm
System fault
Power healthy
Control key switch
In panel printer
Alpha numeric electronic text display
In addition to the above main indications / functions the fire alarm panels shall log the following:
The last 100 fire events on a last in first out basis. This information can be both printed and
displayed. The fire information shall be presented in the following form:
• Date and time of fire.
• Device number and loop number.
• Status of Initiation Device to sense "Fire Condition" i.e. "Optical Sensor".
The previous 255 panel events, all relevant events excluding the operation of the fault buzzer
being cancelled, all events being made available via a PC port for laptop connection.
The previous 255 supervisory (non-fire) events. This information to be provided in the following
form:
• Time activated.
• Time de-activated.
• Supervisory action label or number.
All events being made available via a PC port for laptop connection.
All fire, fault and warning events to be logged immediately with the illumination of an array of
appropriately coloured LED's. (Red-Fire, Amber for fault and warning) and the internal buzzer to
give an appropriate audible signal.
All user controls will be covered by means of a key operated hinged lid, to have a glass/clear
perspex window for viewing the LCD and indicators. The fire alarm panels shall be capable of
providing three-user level of controls. These shall comprise the following:•
•
•
Level 1 – All essential controls i.e. start and stop sounders, fire reset and cancel buzzer
etc.
Level 2 – Use of access code required to disable sections of the system for maintenance
etc.
Level 3 – Engineer functions only
All control and indicating equipment shall be modular in construction to allow for future extension
to the system and shall be easily configurable to meet the exact detection zone and output
mapping of the development. The control and indicating equipment shall monitor the status of all
devices on the addressable loops for fire, shortcircuit faults, open-circuit faults, incorrect
addressing, unauthorised device removal or exchange, pre-alarm condition and contaminated
detector conditions.
The control and indicating equipment software shall have the ability to annunciate a pre-alarm
condition designed to provide the earliest possible warning of a potential fire condition without
raising a full alarm condition. The control software shall be capable of adjusting the alarm and prealarm threshold levels to compensate for changes in detector sensitivity due to contamination over
a period of time.
The control and indicating equipment shall carry out addressing of any devices directly connected
to the system automatically.
The housing containing all the control and indicating equipment shall be capable of being surface,
semi-recessed mounted or fully recessed and shall come complete with cable entries, fixings,
knock-outs and covers, and shall afford a minimum ingress protection rating to IP43.
The fire alarm system mains power connections to the fire controller equipment shall be in
accordance with the guidelines set out in the relevant British Standards and the installation
instructions provided by the manufacturer.
The fire alarm system mains power isolating switch shall be coloured red and clearly labelled FIRE
ALARM: DO NOT SWITCH OFF.
The fire alarm system shall comprise of an integral charger and two sets of individually
maintenance free monitored sealed lead acid cells. The charger will present a nominal DC output.
The batteries will be provided to maintain a standby period of 24-hours (minimum) with a further 30
minutes under full/alarm/control load conditions.
The charging current shall be automatically adjusted according to the batteries ambient
temperature.
Should a full discharge of the cells take place then the system shall be capable of completely recharging them within a 24-hour period.
Contained within the main fire alarm control panel shall be a separate circuit to provide a means of
communications to a master terminal and/or dedicated graphics display system, via industry
Standard RS232 or RS485 (selectable). The rate of data transfer to be selectable between 1200
and 19,200 band.
Adjacent to the main fire alarm panel shall be a graphical mimic diagram as part of the common
display screen, which shall provide a graphical representation of the new development building
and shall show the precise location of the incident.
The electrical contractor shall provide a fire alarm panel layout drawing with dimensions and panel
finishes, for approval four weeks prior to order/manufacture.
Automatic Fire Detectors
Detection equipment shall be provided throughout the development, generally in accordance with
BS 5839.
Every loop-connected device shall contain an integral circuit isolator to ensure that no part of the
system is lost through a single open or short circuit loop cable fault.
Each sensor shall possess 1 integral LED giving a flashing indication for a fire signal or a
continuous indication for certain fault indications.
Sensors shall be white in colour (RAL9010) and manufactured from ABS Plastic. All electronics
and associated sensing elements shall be housed within this unit, these components being
hermetically sealed to prevent their operation from being impaired by dust, dirt and humidity.
The sensitivity of all sensors shall be adjustable from the control panel. This may be carried out
manually or on an automatic basis using the internal system clock, adjustment to sensor sensitivity
shall not be carried out locally to specific sensors. The ranges of sensitivity shall be from State 0
(hi-level) right through to State 15 (total disablement).
The following types of analogue sensors will be available as standard to suite the room application
and risk:• Heat sensor
• Heat sensor with integral sounder
• Optical/Heat sensor
• Optical/Heat sensor with integral sounder
• Optical/Heat sensor with integral strobe
Analogue addressable high performance optical detectors shall be provided throughout the areas
of the building to comply with the category of the fire alarm system and shall be designed to have a
high resistance to contamination and corrosion. These devices shall combine two individual
sensing elements to provide excellent cover for both "types" of fire (slow smouldering and fast free
burning).
The design of the high performance optical detector sensing chamber shall be optimised to
minimise the effect of dust deposits over a period of time, and shall be designed to eliminate the
effect of very small insect entering the chamber.
The high performance optical detectors shall include RFI screening and feed-through connecting
components to minimise the effect of radiated and conducted electrical interferences. The High
performance detectors shall be configured not to generate an alarm condition from a rate of rise of
temperature or absolute temperature alone.
Site Alarm Devices
Analogue addressable electronic sounders shall be provided throughout the development and
shall be loop powered. The electronic sounders shall be complete with suitable software
technology to produce a bell output noise level to meet fire officer requirements.
Sounders shall be integral to the detection bases. Each room shall be provided with 1No. sounder
base as a minimum, within rooms over 50m2 a minimum of 2 sounder/detector bases shall be
provided with 1No. sounder base per 50m2.
The electronic sounders shall be configured to produce audibility noise levels of 65 dB(A)
throughout, or 5 dB(A) above the notional noise.
Associated Ancillary Equipment
Analogue addressable Manual Call Points (MCP) shall be provided throughout the required areas
as indicated on the drawings. These shall monitor and signal to the control equipment the status of
a switch operated by a ‘break glass’ assembly. The MCP’s shall be capable of operating by means
of thumb pressure and shall incorporate a mechanism to interrupt the normal addressable loop
scan to provide an alarm response within less than 2- seconds.
The MCP’s shall be electrically compatible with all of the detector sensor types previously
described.
All electronic devices contained within the MCP’s shall be hermetically sealed so as to prevent
damage from hostile environment conditions: i.e. dust, up to a rating of IP32. For additional
protection from environmental conditions a weatherproof version of the MCP shall be available to
provide a rating of IP44.
The MCP shall be available for either semi-flush or surface fixing. Frangible glass will be utilised,
allowing for complete removal upon operation. All inscriptions text and marks will be screened onto
a transparent label adhered to the glass.
The MCP’s shall be capable of being tested using a special ’key’ without the need for shattering
the glass.
Upon operation of the break glass the integral LED will flash to denote operation, this being
cancelled upon the operation of a reset procedure. The system shall not allow a "Fire" reset to take
place until a new glass has been correctly inserted. Should a "Fire" reset be operated with a MCP
still being in the operated mode, the panel shall inform the user of the situation.
Line isolator modules shall be provided throughout the fire alarm network. The line isolator module
shall be configured to provide protection on the addressable loops by automatically disconnecting
the section of wiring between two fire alarm zones where a short-circuit has occurred. The line
isolator modules shall be powered directly from the addressable loop.
Manual Call points shall be located at each final exit from a zone and other appropriate locations
within the corridors and circulation spaces.
The maximum travel distance between manual call points should be a maximum of 40 metres or
less where special risk applies (eg plant rooms where obstruction may impede access and egress
– M&E sub-contractors to advise upon production of working drawings)
System Wiring
The fire alarm installation shall be installed using approved enhanced fire resisting soft skin PH120
cabling throughout.
Automatic detector and manual call points shall be minimum conductor size 1.5mm².
Audible alarm circuits if routed separately from the loops shall be minimum conductor size 2.5mm².
All cable sizes/lengths to be checked with the fire alarm manufacturer prior to installation and shall
meet the manufacturers minimum requirements.
The fire alarm cabling shall be generally fixed to designated cable basket. The Electrical
Contractor shall supply and install all necessary containment and make due allowance for coordination of this containment. Containment shall be in the form of galvanised cable baskets
provided where more than two cables are routed in parallel.
All cabling shall be concealed except in switch cupboards, ceiling voids and plant rooms. All
builderswork and making good shall be by the Contractor.
Plastic cable ties should not be used to secure fire alarm cables.
Interface Requirements
The fire alarm specialist shall supply, install, test and commission, all fire related addressable
interface units throughout the new development. These shall be capable of receiving and initiating
/ providing fire alarm signals to specific items of plant and equipment.
The installation shall indicate a fire condition to the Main Security Lodge on campus and from their
auto-dial to the emergency services. The Electrical Contractor shall be responsible for the
integration of the fire system with the security lodge control system and the re-commissioning.
The fire alarm system shall be capable of providing an addressable interface to the following
systems:•
•
•
Electric Fire Door Détentes.
Door Access Control.
Building Monitoring System (BMS).
The interface units shall be directly connected to the fire alarm loop and shall be either Loop
Driven Units or Units complete with Integral Batteries. The fire alarm specialist shall ascertain and
select the most suitable type of interface unit applicable for the application.
Loop driven interface devices shall be capable of accepting 4 input signals, providing 4 output
signals or any combination of either.
Loop driven interface units serving motorised fire dampers located within the supply and extract
ductwork systems shall be capable of serving a minimum of 2No. Motorised Dampers located in
the same vicinity, i.e. supply and extract ductwork systems entering the same 1-hour rated fire
compartmental wall shall have their motorized dampers served from 1No. interface unit.
Dependent upon the specific application, input signals shall be interpreted by the system as any of
the following:
• Fire Signal input
• Fault Signal input
• Supervisory Signal input
The exact nature of the input signals shall be selected by means of an on-board DIL switch.
Loop driven interface units shall accept and or supply clean contact signals only, either normally
open or normally closed. No switched voltage outputs or inputs shall be accepted. Loop driven
interface units shall not require any form of external power supply and shall be fully maintained
under mains failure condition by the main control panel's standby batteries.
Interface units complete with batteries shall require a separate supply of 230V a.c. and integral
24V battery pack. These units shall be capable of supporting 4 channels, which shall be configured
as any permutation of inputs and/or outputs.
Input channels shall be capable of supporting the specified manufacturers current range of
conventional detectors and manual call points, these being 24V d.c. operational. These circuits
shall be fully monitored for open and short circuit faults.
Output channels shall be capable of providing a 24V output in the event of an alarm. This may be
used for driving conventional relays.Within the enclosure, provision shall be made for mounting up
to 4 octal base relays for remote signalling along with a suitable voltage barrier.
Operation of the Fire Systems
The system, when in operation, shall automatically check each device connected to the loop. Any
action taken by the Control Node shall not be on 'one off' readings, but as a result of readings
taken over a period of time.
Alarm
Following activation of a detector or break glass, the following shall occur:
1. Alarm sounders/beacons are activated with a ‘continuous’ signal in the affected area and with
‘pulse’
signals in adjacent area(s) while the remaining areas stay silent with only panel indication
2. Alpha-Numeric display shows device address number, location time and device type
3. Twin red zone fire LED’s shall illuminate and flash
4. Indicator on detector illuminates
5. Fire alarm links close in accordance with pre-programmed instructions.
When the mute switch is operated, the zone LED's will continue to be illuminated. The sounders
shall be silenced leaving the control panels 'sounders silenced' buzzer operating.
Any subsequent alarms will cause a repeat of the above procedures 1) to 5) inclusive.
When the reset switch is operated, the panel will return to its normal condition providing there are
no outstanding alarms.
Should a 'pre-alarm/warning' or 'fault' condition occur, the relevant indicator shall illuminate and the
display will show information detailed above the control units sounder will be activated, the
detectors LED will illuminate and the relevant links will close.
Cause and Effect
In addition to the above, the fire alarm system shall activate/deactivate or signal other systems, as
detailed within the Cause and Effect Schedule agreed with the Edge Hill University and as the
following examples:• Door Détentes
• Electronic Door Locks
•
Should the fire spread to other zones or additional separate fires are detected, sounders and the
relevant cause and effect shall be activated within these zones with a cascading of the alert to
adjacent zones.
The Cause and Effect sequence shall be confirmed and agreed with Edge Hill University, prior to
installation.
Commissioning Requirements
The fire alarm system shall be commissioned by the electrical contractor in conjunction with the
specialist equipment manufacturer. The commissioning activities shall be undertaken as a single
continuous operation.
The electrical contractor shall be responsible for providing and completing a schedule of all
devices which require programmable address labels with their site location indicated on a drawing
for approval to the Services Engineer four weeks prior to commissioning.
The fire alarm system shall be tested in accordance with the BS guidelines and the testing
instruction provided by the manufacturer. The fire alarm system and all associated interfaces /
connecting systems shall be tested in their entirety as one system. The commissioning programme
for the fire and all related / integrated systems shall be prepared by the electrical contractor to
meet the overall construction / completion programme.
The electrical contractor and fire alarm specialist shall utilise the following documents to record
test results and details of commissioning tests:• Cable Test Sheets
•
Installation Check Report
• System Layout Drawings
• System Schematic Diagram
• Power Supply Tests
• Audibility Tests
• Product Commissioning Records
The electrical contractor and fire alarm specialist shall be responsible for inspecting and testing the
complete system, including:• Detectors
• Manual Call Points
• Sounders
• Ancillary Devices
• Auxiliary Equipment (i.e. Plant Interface Modules)
• Operating and Control Software
• Security
•
The Fire Alarm specialist shall undertake audibility tests during which the sounders may be
operated continuously over a period to ensure that the systems operate correctly.
Testing of new sounder circuits shall be undertaken on Sunday’s or at an alternate day as agreed
with Edge Hill University. The electrical contractor shall allow in their Tender, the cost for building
manager/security to be present during testing.
The standby battery supply shall be tested for the full battery backup rating to ensure that a
sufficient 30-min capacity remains to activate an alarm after completion of the trial period.
Following the satisfactory completion of installation, testing and start up, the Fire Alarm specialist
shall demonstrate to the Fire Officer, Building Control, and personnel that the system successfully
performs all the functions set out in the Cause and Effect Schedules.
Earthing and Bonding
System Description
In this section the electrical contractor shall include for the supply, installation, testing and
commissioning for a comprehensive earthing system covering the main LV installations
associated with the new development.
The earthing installations shall be in accordance with:a) All sections of this specification
b) BS 7430 2011 - Code of Practice for Earthing
c) BS EN 62305 - Protection of Structures against Lightning
d) British Standard 7671: IEE Wiring Regulations
Earthing systems will be TN-S.
The extent of this work section comprises the following:• LV system bonding
• Main system bonding
• Incoming building services entry bonding
• Each heating circuit pipework
• Cable containment
• Structural steelwork
• Lightning protection system
• Supplementary bonding
• Equipotential bonding
Main and Supplementary Equipotential Bonding
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•
•
•
The electrical contractor will design, supply and install all main and supplementary
equipotential earth bonds from the main earth bars, secondary earth bars, and all
interconnecting earth conductors. Bond all services entering the building as close to
the entry point as possible. Provide main and supplementary bonding as defined in
Clause W51:320.040.
Bond and connect to earth all exposed conductive parts of the electrical installation
and all extraneous conductive parts so that in the event of a fault of negligible
impedance, disconnection will take place in a manner and in such time as to ensure
no danger arises.
The interconnecting earth conductors will be installed in single core LSF insulated
green / yellow copper conductors. These cables will utilise, where available, the same
containment as the sub main power cabling and bonded in a similar manner as the
sub main power cabling.
The engineering contractor will ensure that all metallic pipe / tray work etc. systems
are electrically continuous throughout. Where flexible or non flexible conducting joints
are used on ductwork or pipework, the main mechanical contractor will provide a
cross bond.
The engineering contractor will test the continuity of the complete system, including
ductwork, steelwork, stairs and all metallic parts throughout the installation. Any areas
found not to be cross bonded to the earthing network will be rectified by the
engineering contractor at the appropriate time of the installation.
Circuit Protective Conductors
All final sub circuit earthing will have separate CPC's consisting of LSF insulated green /
yellow single core copper conductor. These cables will be run in the same containment
system as the phase and neutral conductors. For SWA cables, the CPC will be integral within
the cable construction i.e. core within the cables or sheathed, unless indicated within the
cable schedules appendices.
Earth Terminal Bars
Earth Terminal Bars (ETB’s) will be provided in full accordance with the following;
•
•
•
•
•
As specification clausesW51:310.020
All bars will be predrilled with 40% spare terminals at handover for future
connections. All pre-drilled connections will be fitted with brass nuts, washers and
bolts.
Will have two test points, one at each end. Incoming cables/tapes will be terminated
onto these test links as clause W51:310.340.
Will be installed on insulators spaced off the walls.
Will be fully labelled with references on each incoming and outgoing cable
Copper Tape
Copper tapes for earthing and bonding will:•
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•
•
•
•
•
Be high conductivity, un-tinned copper except where otherwise specified.
Be in accordance with specification clausesW51:310.210
Be LSF sheathed where run externally, or in ground, through walls and floors or in
situations where it may be liable to corrosion. Sheath and tapes will be coloured
green and yellow LSF insulation
Be supported by means of purpose made brass or bronze saddles. The strip will not
be drilled for supports.
Where any joints in tape are unavoidable, they will only be jointed by exothermic
chemical weld.
Be connected to equipment by tinning the contact area and clamping or by drilling the
strip, tinning the contact area and bolting with high tensile, plated steel set screws,
flat washers, nuts and locknuts.
Be connected to elements of the building fabric via purpose made brass or bronze
clamps suitable for connection to the cladding material employed.
Earthing/Bonding Cable
Cable for earthing and bonding will:•
•
•
Be stranded copper with green and yellow LSF insulation (6491B). As clause
W51:310.210
Be fixed be means of clips or cleats onto cable trays. engineering contractor will
install and necessary trays to supplement systems shown on the drawings
Be connected to equipment by means of sweated or crimped cable lugs fixed with
high tensile, plated, steel set screws, flat washers, nuts and locknuts.
Labelling
Comply with specification clause W51:320.080.
All elements of the earthing network will be suitably permanently labelled at all connection
points. The following is an indication of the requirements:•
•
•
Connections to main earth bars will be labelled as to its purpose e.g. ‘Main lightning
protection bond’, etc
Each earth bond will state its source earth terminal bar to reflect where the cable/tape
emanates from.
Each earth bond will be labelled with its cross sectional area.
Labels will be plastic sandwich type, black lettering on a white background. Letters will be
10mm height and labels will be fixed in a manner to the approval of the Managing Contractor
and Architect. The earthing specialist will submit the complete labelling scheme for the
approval of the Managing Contractor and Architect prior to implementation including samples.
Penetrations, Brackets and Supports
All penetrations through the building fabric (high and low level) will comprise built in sleeves
sealed with approved materials to prevent the passage of fire, smoke, water, air etc. The
sealing method will allow the movement of the services where necessary. Sealing on fire
resistant construction will not degrade the fire rating of the structure. The architect and
engineers will comment on all sealing materials and methods before installation. For the
purposes of tender all penetrations will be deemed as 1 hour resistant.
The specialist earthing installer will provide all necessary brackets, hangers bracing and
supports as required to complete the installation. All fixings will be subject to the approval of
the managing contractor. The specialist earthing installer will submit details and/or samples of
all fixing and tape types proposed to the buildings to the managing contractor and architect for
comment prior to installation.
Testing and Commissioning
The specialist earthing installer will carry out the sequential testing and commissioning of the
installations in sections as necessary for technical reasons and to suit the construction
programme. The specialist earthing installer will produce his own detailed programmed
method statement based on the overall construction programme. This method statement is to
be agreed with and approved by the managing contractor, prior to work commencing on site.
The specialist earthing installer will produce a brief method statement with his tender
submission.
The specialist earthing installer will test all earth electrode resistances in accordance with British
Standard BS 7430 and issue test certificates for each earth electrode system.
Lightning Protection
System Description
The scope of works include for the design, supply, installation, testing and commissioning of the
individual items of equipment and systems as a whole, including interfacing with other contractors.
A lightning protection system shall be installed using an air termination network of PVC covered
copper/aluminium tape located on the roof, bonded to the buildings perimeter structural columns
which shall be used as down conductors to earth electrode pits.
The detailed design and installation of the system shall be carried out by a recognised specialist
sub contractor (know hereafter as the ‘Lightning Protection Specialist’). The Lightning Protection
Specialist shall be a sub contractor to the Contractor. The installation shall comprise all necessary
mats, strike plates, downtapes, earth pits, etc required to provide lightning protection for the whole
of the new building.
The lightning protection system for the building shall comply with the recommendations of the
relevant British Standards.
The contractor shall carry out the installation of the lightning protection to the specialist
requirements of the Lightning Protection Specialist. The Lightning Protection Specialist shall
provide all necessary details and installation drawings at an early stage to enable the system to be
integrated with the steelwork and ground works contractors on site. The contractor shall submit the
installation drawings for review by the consultant engineer.
The system shall de designed, supplied and installed, tested and commissioned by a Lightning
Protection Specialist Contractor with specific knowledge and proven experience of this installation.
Lightning surge suppression shall be incorporated within the main TPN distribution boards,
installed by the electrical contractor.
General
Refer to the structural drawings for base foundation details and column specification, etc.
Refer to the Architects drawings for plant location, parapet details, handrails, etc.
Lightning protection shall be provided in accordance with current British Standards.
The lightning protection system shall utilise the columns as an earth electrode with no visible down
conductor tape.
Earth inspection pits and clamps shall be provided around the perimeter in accordance with
current British Standards, to enable testing and inspection to be carried out.
The system shall use an air termination network of conductive tapes on the flat roofs and parapets
and connections to metallic roofs and other equipment. The network shall be earthed via the steel
columns and the reinforcing bars of the concrete structure. If the conductivity of the substructure is
sufficiently low, then earthing shall be via the foundations. Otherwise, earth rods shall be provided
around the perimeter, each with an inspection pit and test clamp.
The air termination network shall comprise of tape bonded to building steel structure, external
handrails, etc via 25mm x 3mm copper tape.
Where it is necessary to route air terminations to down conductor positions this shall be carried out
by copper tape (25 x 3mm).
The steelwork columns of the structure shall be used as the down conductors.
25mm x 3mm copper tape shall be securely bonded to the steelwork at low level utilising
appropriate fasteners/fixings and routed through the low level block work/brickwork of the external
walls, where necessary.
The Lightning Protection Specialist shall ensure presence on site at the appropriate time of the
construction works to carry out these works.
All PVC covered tapes will be ‘Non Standard’ in colour and therefore costs allowed within the
tender. The architect shall nominate a RAL colour for the tapes before ordering takes place.
Test clamps located at 500mm above finished ground level shall be connected to the tape of the
down conductor network that protrudes the block work/brickwork. From the test clamp the down
conductor shall continue to a precast concrete earth pit.
A connection to the main electrical installation earth bar shall be made using 25x3mm copper tape,
as necessary.
The lightning protection installation shall include all necessary localised bonding to entrance
façade steelwork, flue stack, roof plant, roof platforms handrails, roof structures, main electrical
installation earth bar and connections that are required in accordance with current British
Standards.
All equipment provided within the contract shall have a minimum parts availability of 10 years and
not be an end of line product.
Schedule of Drawings
Drawing No.
Description
AMP010 - E1001
AMP010 – E2001
AMP010 – E5001
AMP010 – E6001
AMP010 – E7001
AMP010 – E8000
LV Distribution Schematic
IT Network Schematic
Typical Block TV Distribution Schematic
Typical Block Access Control Schematic
Fire Alarm Schematic
Typical Block Electrical Services Layout