employer’s requirements outline specification february 2017 · 2017. 2. 20. · alconbury weald...
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ALCONBURY WEALD – INCUBATOR2
Employer’s Requirements Outline Specification
February 2017
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
February 2017 X:\Projects\2601167 - Alconbury Incubator 2\08 Reports and Design Notes\Stage 3 Report\REP-2601167-08-TCJT-20170205-Employer's Requirements Outline Specification.doc
Report Audit
Rev. Description Prepared and Checked by: Reviewed by: Date:
T1 Tender Issue TC | CJB | JT NW 6th February 2017
This report is provided for the stated purposes and for the sole use of the named Client. It shall be confidential to the Client and the client’s professional advisers. Hoare Lea accepts responsibility to the Client alone that the report has been prepared with the skill, care and diligence of a competent engineer, but accepts no responsibility whatsoever to any parties other than the Client. Any such parties rely upon the report at their own risk. Neither the whole nor any part of the report nor reference to it may be included in any published document, circular or statement nor published in any way without Hoare Lea’s written approval of the form and content in which it may appear.
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
February 2017 X:\Projects\2601167 - Alconbury Incubator 2\08 Reports and Design Notes\Stage 3 Report\REP-2601167-08-TCJT-20170205-Employer's Requirements Outline Specification.doc
CONTENTS
1.0 INTRODUCTION
2.0 INCOMING SERVICES PROVISION
3.0 DESIGN CRITERIA AND SERVICING STRATEGY
4.0 MECHANICAL SYSTEMS
5.0 PUBLIC HEALTH SYSTEMS
6.0 ELECTRICAL SYSTEMS
7.0 SUSTAINABILITY
APPENDIX A – LUMINAIRE SCHEDULE
APPENDIX B – MEP DRAWINGS
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
February 2017 X:\Projects\2601167 - Alconbury Incubator 2\08 Reports and Design Notes\Stage 3 Report\REP-2601167-08-TCJT-20170205-Employer's Requirements Outline Specification.doc
1. Introduction
This document forms Volume Six – Building Services Consultant Design Drawings and Specification, of the
Employer’s Requirements, which describes the design proposals for the Mechanical, Electrical and Public
Health engineering systems and design criteria proposed for the Alconbury Weald Incubator² development.
This information has been based on the Urban and Civic briefing information and subsequent development
with the design team.
The development consists of two floors of office space divided by a central core of entrance, breakout, WC,
shower, kitchen, lift and meeting room, with associated car parking. The figure below reflects the indicative
redline outline of the proposed Alconbury Weald Incubator² site.
Figure 1.1 – Masterplan Reference to Allford Hall Monaghan Morris Architects Pre-application Package
The current Hoare Lea appointment is limited to the Alconbury Weald Incubator² Building, where Hoare Lea
shall adopt a monitoring role on behalf of Urban and Civic post tender, for the Design and Build Contractor’s
detailed design, installation, testing and commissioning.
The figure below reflects the Alconbury Weald Incubator² Site Plan, where the development shall consist of two
storey office areas. The site shall see two entrances, one main entrance to the front and an additional staff
entrance to the rear of the building. The building shall also see an external walkway stretching around the
perimeter.
Figure 1.2 – Scope of Hoare Lea’s Employer’s Requirements Information
Please refer to the Peter Brett Associates Employer’s Requirements which outlines the incoming services to
the Incubator² Building.
Peter Brett Associates shall be providing external lighting for the Alconbury Weald Incubator² building,
associated carpark, delivery area perimeter walkways, within the redline demise above.
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
February 2017 X:\Projects\2601167 - Alconbury Incubator 2\08 Reports and Design Notes\Stage 3 Report\REP-2601167-08-TCJT-20170205-Employer's Requirements Outline Specification.doc
2. Incoming Services Provision
The incoming services shall be coordinated with Peter Brett Associates to accommodate the following
requirements:
2.1 Incoming Electric
The assessed maximum demand has been carried out in accordance with the Building Council for Offices
(BCO) and the developed general arrangements. This information has been coordinated with PBA who have
specified a new substation to facilitate a 400A TP&N supply to the ground floor LV room.
This 400A TP&N shall be coordinated with the Utilities Contractor to serve a wall mounted LV panel board.
2.2 Incoming Gas
Hot water shall be provided via a direct gas fired condensing high efficiency water heater requiring an
estimated 5m3/hr natural gas supply. This along with the gas meter is to be located within a small ground floor
plantroom which is externally accessed.
2.3 Incoming Water
The incoming metered water supply is to enter the building in the dedicated boosted cold water service plant
room at ground floor, which is externally accessed.
Space shall be allowed for fitment of a cold water storage break tank and booster set for the Building Council
for Offices (BCO) Guide to Specification 2014 requirement and in the event of insufficient water mains
pressure. To operate the building with mains cold water directly it is estimated that a 32mm supply would be
required at a flow rate of 0.89 l/s. An on-site flow and pressure test would be required to determine adequate
supply is available.
2.4 Incoming Data & Telecoms
The incoming route for these systems shall be developed as part of detailed design but it is envisaged that the
incoming data services shall be located within the core area LV intake room or first floor main comms room.
There shall be a provision for dedicated telecoms lines for; lift system, fire alarm system, disabled refuge
system and security system and reception telephone.
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
February 2017 X:\Projects\2601167 - Alconbury Incubator 2\08 Reports and Design Notes\Stage 3 Report\REP-2601167-08-TCJT-20170205-Employer's Requirements Outline Specification.doc
3. Design Criteria and Servicing Strategy
3.1 General
The design of the building mechanical and electrical engineering systems shall aim to reflect:
• Cost effective design
• Best available life cycles for all systems
• Flexibility in operation where practical
• Allow for future growth and adaption (where possible)
• Economic utilisation of energy
• Minimise cost in use
• Good environmental performance
• Safe construction and use
• Update the current central plant to comply with Building Regulations and BCO 2014 requirements.
The design of the mechanical and electrical engineering systems shall be carried out with intent to minimise
the use of energy and water consumption.
3.2 Selection of Materials, Components and Systems
As far as practical, the selection of materials, components and systems shall be constructed and installed to
avoid built in obsolescence and whenever possible be standardised throughout the development. Ideally no
element shall be so specialised as to be only available from a single source.
3.3 Plant and Equipment Life
The works shall be designed with materials, components and techniques that are readily available, reliable and
maintainable so that, provided the building is maintained in accordance with good practice and the guidelines
and recommendations contained in the operation and maintenance manuals, the plant life expectancies as
stated on the adjacent table can be achieved.
Wherever practicable all plant and materials shall be from suppliers established and operating in the UK and
each shall guarantee the supply of spare parts consistent with effective maintenance. Similar items of
equipment shall be supplied by the same manufacturer and corresponding parts shall be interchangeable.
The installations shall generally be provided in accordance with the BCO guide and the standards agreed and
defined in this report to effect optimum flexibility in space planning.
The installations shall be designed to avoid unwanted effects of air borne and structure borne noise, vibration
and spillage, which might have an unnecessary detrimental effect upon the performance of the building as a
whole.
The systems and plant shall, with the proper standard of maintenance, present no health hazard to the
occupants of the building, maintenance personnel, or the occupants of neighbouring buildings.
Where possible, all plant shall be capable of replacement during the life of the building without the need for
primary structural modifications.
Plant Item Life Expectancy
(years)
All central pumps 20
VRF Condensers 10
VRF Indoor Units 10
Central water storage tank (uPVC) 25
Booster Pump set 15
Office supply and extract ventilation units 15
Toilet supply and extract ventilation units 15
High Voltage switchgear and Transformers 25
Main Low Voltage switch panels 25
Central building management system (BMS). 10
Lift 15
Figure 3.1 – Table of Plant Life Expectancy
3.4 Flexibility and Adaptability
It is important to consider options to ‘future proof’ the building considering potential future use. The design aim
shall be for flexible solutions that can be adapted to meet potential changes in use or internal layout through
the life of the building. The following shall be considered:
• Climate change – specific requirements (e.g. design for elevated external summer temperature)
• HVAC systems can be adapted to suit change of use / layout of space providing internal flexibility.
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
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3.5 Building Zoning
It is anticipated that the engineering services installation shall be fully zoned for each floor of the building with
the potential for multi-tenant occupancy. Design solutions shall be chosen with capital and revenue
expenditure, the operational considerations, energy recovery and general conservation being paramount.
Heating, ventilation and electrical zoning shall be configured to promote flexibility in order to enable re-
modelling and re-planning to be undertaken at a future date.
It is envisaged that sub-metering of all major services to each area/function shall be required as described in
the Building Regulations.
3.6 Regulations, Codes & Standards
The MEP design shall be developed to comply with all relevant UK and European legal and statutory
requirements including Town and Country Planning Regulations, Building Regulations, Construction Design
and Management Regulations, Health and Safety at Work Act and the Environmental Protection Act unless
otherwise agreed.
The design shall be based on a list of standards agreed with the Client as part of this briefing process. Where
deviations from these standards are required they shall be added to a list of project deviations, and provided
for review and approval prior to commencing detailed design.
Where items are not specifically covered by the relevant specialist documents reference shall be made to the
BCO Guide, CIBSE publications and relevant British Standards and Codes of Practice.
The design of new plant shall conform to the Statutory Requirements and Regulations of all controlling
Authorities and all relevant Standards and Codes of Practice. Wherever a Standard or Code of Practice is
referred to it shall imply the latest issue and/or revision applicable at the time. If no British Standard exists, the
design shall comply with an equivalent standard published by a member of the European Community as
recognised in the UK. Standards and regulations include, but are not limited to:
• Alconbury Weald Key Phase 1 Design Guide
• Peter Brett Alconbury Weald Key Phase 1 Sustainability Statement
• British Standards and Codes of Practice
• Local Authority requirements
• Local Planning requirements
• Statutory Instruments
• Local Fire Authority requirements
• The Fire Precautions Act 1971 (as amended)
• The Fire Precautions (Workplace) Regulations 1997 (as amended)
• Health and Safety Executive Guidelines
• Construction (Design and Management) Regulation
• Factories Act
• Pollution Act
• Building Regulations
• IEE Wiring Regulations
• Lighting of work places BS EN 12464-1:2011
• Water Regulations
• Environmental Health Requirements
• CIBSE Design Codes
• Institute of Public Health Engineers Design Guide
• Building Council for Office 2014 Guide to Specification
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MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
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3.7 Design Criteria
This section outlines the design team’s proposals based on the initial and latest Urban and Civic brief documentation, in addition to the Alconbury Weald Key Plan 1 Design Code.
Where clause titles in this specification have codes (e.g. ‘T10’, ‘U10’) these are the codes of the Common Arrangement of Work Sections (CAWS) that are widely used in the UK building industry for categorising building
engineering services systems and components.
SYSTEM / ITEM Design Criteria in accordance with; U&C Briefing, Building Council for Offices Guide to Specification 2014, CIBSE Design Guide, Hoare Lea Recommendations
Internal temperatures Office/Entrance Summer 24°C ± 2°C, relative humidity uncontrolled
(For mixed mode and naturally ventilated offices, the internal temperature should not exceed 25°C for more than 5% of the occupied hours and 28°C for no more than 1%)
Office/Entrance Winter 21°C, relative humidity uncontrolled
Circulation Areas 18°C, relative humidity uncontrolled
WCs 20°C, relative humidity uncontrolled
Disabled WCs 21°C, relative humidity uncontrolled
External Design conditions 31°C db, 21°C wb Summer (Norwich CIBSE Weather File)
-4°C db, -4°C wb Winter (Norwich CIBSE Weather File)
-10°C dB for air handling frost coil selection
Occupancy Office – 10m2/person
Noise Criteria Open Plan Office – NR40 (BCO requirement)
Circulation and Entrance Lobbies – to be developed / NR40 (BCO requirement)
Plant Space – to be developed / NR55
WCs – to be developed / NR45 (BCO requirement)
Cooling Load
Office Small Power – 25 W/m²
Office Lighting – 10 W/m²
Office Occupants – 9 W/m²
Comms room – 3kW per rack and coordination with ancillary / UPS equipment loads
Ventilation/Fresh air provision Office – 12 l/s per person Supply and Extract
Disabled WC/WCs – 10ac/hr Extract 8ac/hr Supply/Make-up Air
Kitchen – 15 l/s Extract
S32 - Incoming Gas Supply Metered gas connection for direct water heater
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
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SYSTEM / ITEM Design Criteria in accordance with; U&C Briefing, Building Council for Offices Guide to Specification 2014, CIBSE Design Guide, Hoare Lea Recommendations
S10 - Incoming Water Supply Incoming sub metered
Design allowance for incoming water +1l/s for future use
Provide tender allowance for leak detection
V12 - Incoming Electric Supply A 400 volt 50Hz 3-phase power supply is to be provided with a meter position.
Design allowance for incoming electrics +25% future use
New private sub-station to be provided by PBA.
Intake location to be coordinated.
W10 – Incoming Telecommunications Provide and coordinate fibre line in accordance with Tenant’s IT.
Provide telephony Line for Lift dial-out to be provided.
Allowance for reception telephone line
Allow provision for future Redcare dial-out for fire alarm system and future intruder alarm system (containment)
Plant Space Note that the Roof Plant has not been space planned to accommodate future tenant’s plant
X10 - Lift 8 person DDA machines room less passenger lift to serve ground and first floor. This shall meet all current and relevant building codes and regulations.
Lift (as Schindler 5500) to have brushed stainless steel doors and trim. Interior of the lift car to be brushed stainless steel with a mirrored back wall. Floor finish to match the entrance foyer.
Building Regulations Building Regulations Part L2A
Building Fabric Thermal Performance Wall – 0.18 W/m².K
Roof – 0.15 W/m².K
Ground Floor – 0.20 W/m².K
Windows (including frame) – 1.40 W/m².K (0.40 G Value)
Louvres / Rooflights (including frame) – 1.2 W/m².K (0.40 G Value)
Air Permeability 3.5m³/h.m² at 50Pa (in-line with BCO Guide)
BREEAM Not Applicable
Sustainability Meet Building Regulations Part L2A 2013 (circa 9% reduction over 2010)
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
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SYSTEM / ITEM Design Criteria in accordance with; U&C Briefing, Building Council for Offices Guide to Specification 2014, CIBSE Design Guide, Hoare Lea Recommendations
U10 - Ventilation Natural Ventilation Heat Recycling (NVHR) units within the office spaces and Mechanical Ventilation with Heat Recovery (MVHR) units for the core areas.
Mechanical extract for staff facilities (WC, Changing and Kitchenette/Café).
T31 - Heating An allowance for VRF fan coil units to offices with electric panels to ancillary staff spaces.
T70 - Cooling An allowance VRF fan coil units to the offices, meeting room and server room only.
DX to comms room cooling
W60 – Building Management System Automatic BMS controls – further detail to be provided during next stage.
V20 – Low Voltage Distribution 400A TP&N incoming supply based on BCO load allowances and provision for kitchen and electric heating.
V32 - Uninterruptable Power Supplies Allow tender cost option for 2No. 3kW rack mounted UPS modules, complete with 10 minute autonomy (as Gamatronic).
V21 – Lighting Offices 350 – 450 lux (on working plane)
Kitchen 400 – 500 lux
Entrances 300 lux at FFL
WCs & Circulation 150 – 200 lux at FFL
Stairs 150 – 200 lux at FFL (as circulation)
Lighting shall be designed to BCO Guidelines / LG7 / BS EN 12464-1:201CIBSE Lighting Guide / Part L and relevant BS / EN
V22 – General Power Split metered distribution boards to be provided to meet CIBSE TM39, to monitor lighting, mechanical and small power loads.
Distribution boards to be adequately sized to accommodate Tenant’s CAT-B installation with additional 25% spare capacity.
Small power to WC and shower provision to meet Part M and relevant codes
Cleaner’s sockets provided on dedicate ring circuit.
All exposed accessorise within common areas to be brushed stainless steel.
Allow lobby area to be provided with 3No. floor boxes for future reception desk position.
The Tenant’s Cat-A office areas shall be provided with power to lighting, lighting control and mechanical supplies at high level, with low level small power limited to cleaner sockets.
Tenant’s and landlords supplies to be derived from respective distribution boards. Mechanical power and lighting circuits within tenant’s demise to suit future restack / cellular spaces.
Comms room racks to be supplied from 16A BS 60309-2 commando outlets at high level.
V40 – Emergency Lighting Emergency lighting throughout the entire building shall be provided to meet current regulations and standards
V41 – Street/ area/ flood lighting Refer to PBA Package
External lighting to meet requirements of ‘Alconbury Key Phase 1 Design Code – FINAL approved version (February 2015) Section 8.4.4 Lighting)’
ALCONBURY WEALD – INCUBATOR²
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
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SYSTEM / ITEM Design Criteria in accordance with; U&C Briefing, Building Council for Offices Guide to Specification 2014, CIBSE Design Guide, Hoare Lea Recommendations
W15 - Information technology Provide 2No. 800x 800 42U IT racks for IT specialist to utilise.
W30 - Information technology cabling CAT 6A cabling to be provided as required.
Provide high level data basket connectivity from the comms room to all areas as outlined on the containment drawings. This shall also facilitate future PoE Wifi network system.
Note that tenant/s to provide IT cabling to their demise as part of their fit-out works.
W50 - Fire Alarm and Detection Fire alarm system to be provided to meet BS 5839, fire strategy and building control.
Allow level of coverage to be category L1 but to be confirmed by the fire engineer’s strategy.
The fire alarm system shall be provided with a red-care dial-out facility.
Allow dedicated loop per tenant and landlord (i.e 5No total).
W14 - Disabled Toilet Disabled toilet and shower to comply with BS 8300. The system shall comprise local call cords, remote reset units and over-door indicators. All alarm singles shall report back to indicator located at reception.
W40 – Access Control
Provide high level security trunking connectivity from the LV room and comms room to all areas as outlined on the drawings. Allow for underfloor ducts to entrances. Provide door containment to allow for future tenant’s access control system as outlined on the drawings.
Access Control System to be provided as part of the Tenant/s fit-out as required.
W41 – Intruder Alarm System
Provide security containment connectivity from the LV room and comms room to all areas as outlined on the drawings, to for future intruder alarm system to be installed.
W42 – Surveillance System
Provide security containment connectivity from the LV room and comms room to all areas as outlined on the drawings, to allow future CCTV system to be installed.
W52 – Lightning Protection
To be provided in accordance with BS EN 62305.
ALCONBURY WEALD – INCUBATOR2
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
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4. Mechanical Systems
This section provides an outline of the engineering services that are proposed to be provided as part
of the base build provision to the proposed Alconbury Weald Incubator² building:
Where clause titles in this specification have codes (e.g. ‘S10’, ‘S65’) these are the codes of the
Common Arrangement of Work Sections (CAWS) that are widely used in the UK building industry for
categorising building engineering services systems and components.
T15 Solar Collectors It has not been proposed to include solar hot water collectors for the domestic hot water services
(DHWS) system. This shall be reviewed if the requirement changes and it is deemed that they shall
be necessary for the development to be in accordance with planning and the energy strategy.
T42 Local Heating Units Local electric heating radiator panels shall be allowed within the staff facilities and circulation areas,
this includes electric towel rails within the shower rooms. These shall be provided with tamper proof 7-
day calendar timer control.
Electric underfloor heating shall be installed within the ground floor entrance/breakout area and main
circulation area within the core. This shall be coordinated with any electrical services that require to
run below the finished floor for distribution or to serve floor boxes proposed within this area. This shall
be provided with a room air and floor temperature sensor along with a tamper proof 7-day calendar
timer control.
T60 Central Refrigeration Plant There is not a requirement to install central refrigeration plant as part of the shell and core fit-out.
T62 Variable Refrigerant Flow (VRF) System A VRF heating and cooling system shall be allowed for the ground and first floor office spaces and
meeting room. In the office spaces heating and cooling shall be distributed via ceiling mounted
cassette fan coil units and coordinated with the ventilation and lighting. A duct mounted VRF heating
and cooling coil shall be installed to the meeting room ventilation system. A VRF cooling system shall
be allowed for the first floor Comms. room with a wall mounted fan coil unit. External condensers shall
be located at roof level above the core and within a screened plant area. These shall not be installed
as part of the base build and shall be provided as part of the fit out as required.
U10 General Supply and Extract Ventilation System Natural ventilation heat recycling (NVHR) units shall be allowed for within the ground and first floor
office spaces to allow for single sided ventilation with the use of low level window openings. The
building has been designed so that the NVHR units manage overheating and the mechanical cooling
is for peak lopping or to manage a tenant whose fit-out results in higher than average heat gains.
Figure U10 – Example of NVHR units within First Floor Office Space
A dedicated mechanical ventilation heat recovery (MVHR) unit shall be installed to serve the meeting
room, stacked on a larger unit to serve the core areas. The meeting room MVHR unit shall have a
heating and cooling coil on the supply and ducted through the roof onto slot diffusers both ends of the
meeting room and coordinated with the rooflight and other services.
U11 Toilet Supply and Extract The MVHR unit serving the core shall extract from WC’s, showers, kitchen and cleaners stores,
supplying air to the ground floor entrance and breakout through wall mounted jet nozzles and diffusers
in circulation areas. This shall keep the toilet areas under negative pressure and prevent the release
of odour from the toilet rooms to adjacent areas. The extract fan shall be specified with a twin extract
fan to allow for duty and standby to meet Building Regulations 2010 Approved Document F. The
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systems shall generally be operated by occupancy sensors within the toilet areas to increase from a
trickle/background ventilation rate to boost, with a timed run-on period.
U12 Kitchen Ventilation There is not a requirement for commercial kitchen ventilation, however allowance for a mechanical
extract fan for the staff kitchens shall be made.
U14 Smoke Extract / Smoke Control Confirm if to be provided to suit the fire strategy. Please refer to the Fire Engineering report.
ALCONBURY WEALD – INCUBATOR2
MECHANICAL, ELECTRICAL AND PUBLIC HEALTH SYSTEMS – EMPLOYER’S REQUIREMENTS OUTLINE SPECIFICATION
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5. Public Health Systems
This section provides an outline of the engineering services that are proposed to be provided as part
of the base build provision to the proposed Alconbury Weald Incubator² building:
Where clause titles in this specification have codes (e.g. ‘S10’, ‘S65’) these are the codes of the
Common Arrangement of Work Sections (CAWS) that are widely used in the UK building industry for
categorising building engineering services systems and components.
R10 Rainwater Pipework
A rainwater system capable of removing the surface water from the roof and discharging it to the
below ground disposal system, in compliance with BS EN 12056-3 shall be provided via a traditional
gravity system. The rainfall intensity shall be chosen with due regard to the nature and use of the
building and appropriate degree of risk that can be accepted.
The roof shall be drained via a roof gutter, outlets and rainwater pipes to suit the Architect’s roof
design and shall be detailed within the Architectural packages.
Access doors shall be installed on rainwater pipework to facilitate rodding and maintenance access to
installed pipework. Access through architectural casings shall be co-ordinated with pipe accessories.
Generally access doors shall be provided to all main rainwater pipes in accordance with BS EN 12056
at 1200mm above ground floor level.
Material shall be either stainless steel or plastic.
R11 Foul Drainage Above Ground
All sanitary appliances, floor drainage from plantrooms and mechanical plant shall be drained via a
gravity foul drainage above ground system, using the minimum of pipework and fittings.
Sanitary discharge stacks shall be installed in lightweight cast iron for its fire resistance, life
expectancy and sound insulation properties.
The small diameter sanitary waste and vent pipework shall be installed in muPVC to BS EN 1566 and
shall generally be concealed. Where small diameter pipework is exposed it shall be a light grey colour
or chromium plated finish.
Access doors or caps shall be installed on sanitary pipework to facilitate rodding and maintenance
access to installed pipework. Access through architectural casings shall be co-ordinated with pipe
accessories. Generally access doors shall be provided to all main discharge pipes in accordance with
BS EN 12056 at 1200mm above ground floor level and at all other floor levels where appliances are
drained.
Where ventilating pipework is necessary to suit either the below ground drainage system or the
sanitary plumbing system, it is proposed to terminate through the roof or façade to meet architectural
and technical requirements.
There is currently no provision for above ground drainage to the main office areas.
R12 Drainage Below Ground
Excluded from Hoare Lea design and to be provided by Peter Brett Associates.
S10 Cold Water
Use the CIPHE (IoP) method for determining domestic cold water flow rates. The minimum operating
pressure to be achieved upstream of the outlets is to be between 2.5 to 3.0 bar.
An electromagnetic water conditioning unit on the mains cold water supply shall be provided to reduce
the build-up of scale within the system.
Pressure regulation is to be provided where necessary to maintain optimum water pressure to draw
off points.
Space shall be allowed for the future fitment of a cold water storage break tank and booster set for the
Building Council for Offices (BCO) Guide to Specification 2014 requirement and in the event of
insufficient water mains pressure.
S11 Hot Water
A direct gas fired water heater shall be provided on the ground floor to serve WC areas, cleaner’s
cupboard, showers and kitchens via a primary and secondary return system. Use the CIPHE (IoP)
method for determining domestic hot water flow rates. The minimum operating pressure to be
achieved upstream of the outlets is to be between 2.5 to 3.0 bar.
Hot water storage provisions shall be dependent upon the final selection of hot water generating
equipment.
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All hot water outlets shall be controlled by thermostatic mixing valves complying with the TMV3
scheme, with the exception of the tea-points and cleaners sinks.
Pressure regulation is to be provided where necessary to maintain optimum water pressure to draw
off points.
S61 Dry Risers
Confirm if to be provided to suit the fire strategy. Please refer to the Fire Engineering report.
S65 External Hydrants (Private)
Confirm if to be provided to suit the fire strategy. Please refer to the Fire Engineering Report.
S70 Gaseous Fire Extinguishing Systems
Not applicable.
The materials selected for this project are as follows;
BS 4514 - Unplastisized PVC soil and ventilating pipe, fittings and accessories.
BE EN 1329 - Plastics piping systems for soil and waste discharge.
BS 1566 - Plastic waste pipes and fittings.
BS 3943 - Plastic waste traps.
BS EN 1254 - Copper and copper alloys.
BS EN 877 - Cast iron pipes and fittings (lightweight cast iron).
BS EN 1057 - R250 copper tube and fittings.
BS EN 1519 - HDPE pipework and fittings.
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6. Electrical Systems
This section provides an outline of the engineering services that are proposed to be provided as part
of the base build provision to the proposed Alconbury Weald Incubator² building:
Where clause titles in this specification have codes (e.g. ‘S10’, ‘S65’) these are the codes of the
Common Arrangement of Work Sections (CAWS) that are widely used in the UK building industry for
categorising building engineering services systems and components.
V12 Public Utility / Incoming Supply
A 400V, 50Hz, 3-phase incoming power supply, shall be provided to the ground floor LV room. Refer
to Section 2 of this report regarding details of the incoming supply and Peter Brett Associates tender
information.
V17 Photovoltaic Power Supply
In order to comply with Part L of the Building Regulations and the planning requirements, it is
proposed to install photovoltaic (PV) panels to the building. The PV panels shall be located on the
roof area and orientated south, mounted at an angle, for maximum efficiency. Inverters, to convert
the electricity from DC to AC, shall be positioned locally to the panels on the roof. A fall arrest system
shall be required to allow safe cleaning of the panels. The electricity generated by the PV panels
shall be used for landlord services, such as kitchen, lighting, lifts and pumps, in order to not
complicate the billing procedure for tenants.
The PV array would need to have an annual yield of approximately 3,200kWh/yr. This may require an
array of approximately 16 to 21 m², depending on the orientation of the array and the manufacturer’s
panel specification.
V20 LV Distribution
The incoming supply shall be coordinated with the 400A TP&N LV panel board (as Schneider),
located within the ground floor electrical room. Refer to the LV schematic regarding the design intent
of the LV panel board, which shall be provided with 25% spare ways. Transient surge arrestor units in
accordance with BS EN 62305-4.
The installation shall be designed and installed to BS 7671 and all other relevant standards and sub-
main services will be provided comprising XLPE/SWA/LSF cabling. Multi-function meters will be
provided to accord with Part L of building regulations.
All sub-main supplies shall be wired in XLPE/SWA/LSF cabling on combined cable tray through
electrical service risers and ceiling.
Final circuits will be installed in trunking (exposed or with ceiling voids), with steel conduit drops to
socket outlet / accessory positions. All final cabling will be LSOH single core.
Generally the following containment will be provided throughout the building, as part of the CAT-A
works (on floor and within the risers). Also refer to the containment layouts:
• 100mm x 100mm LV trunking – Serving small power circuits from the local distribution boards
• 50mm x 50mm security trunking
• 150mm to 600mm cable tray – serving LV submains, recessed downlights and fire alarm
cabling, either individual or combined.
• 150mm – 450mm basket serving data cabling. Note that this is provided within the tenant’s
risers, where the tenant shall install their own data basket within the floor void as part of their
CAT-B fit-tout works.
Metering shall be provided in accordance with Part L and CIBSE TM39. The LV panelboard shall be
provided within the following meters:
• Part L energy meters to outgoing supplies
• MID approved meters to the 4No tenant’s supplies, to facilitate sub-billing.
• Multifuction meter allowing monitoring of kW, kVA, kVAr, Amps, Voltage and frequency across
all three phases to the incoming supply.
Landlord and Tenants distribution shall be provided. Distribution boards shall be 3 phase, 400V,
suitably rated with adequate outgoing ways (including spare capacity) and be of the miniature circuit
breaker (MCB) pattern with integral isolator and three phase and neutral circuit configuration.
The Landlord’s split-metered distribution boards serving common areas
• Reception
• WCs
• Kitchen
• General and Cleaner sockets
• Electric Heating
Tenant/s split and sub-metered distribution boards serving the Cat-A office, but limited to the following
services (CAT-A):
• NVHR units
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• Cassette units
• Lighting control modules, located above cable tray.
Small power to low level sockets, power grommets and floor boxes shall be part of the Tenant’s fit-out
works.
Earthing and Bonding
Earthing and bonding shall be designed to comply with the relevant British Standard and the
requirements of both BS 7671 and BS 7430. All metal work including pipework, ductwork, drainage,
cable containment etc. shall be bonded to earth and provided with equipotential earth cross bonds.
Both the raised access floor and suspended ceiling grid shall also be bonded to earth. Earth bars shall
be provided within the comms room, risers and LV room.
V21 General Lighting and Control
Lighting throughout the Incubator2 development shall comprise LED luminaires throughout and shall
consider the architectural aesthetic, maintainability and ease of sourcing replacements. All luminaires
are to be agreed with the Design Team and Client.
The complete lighting installation shall comply with the requirements set out in the Code for Interior
Lighting published by the Chartered Institution of Building Services Engineers (CIBSE) and BS EN
12464-1:2011 – Lighting of indoor work places.
The installation shall be designed and installed in accordance with Part L and all other relevant
Building Regulations. The installation shall be designed and installed to BS 7671 and all other
relevant standards.
Landlord and tenancy areas shall be kept separated from each other and fed from appropriate
distribution boards, where cabling shall be supplied from LSF cables in conduits.
An addressible lighting control system (as Ex-or, Simmtronic or equal) shall be provided throughout
the building to allow central control if a single tenant occupied the building and allow flexiblity for the
restack works within the office areas. The system shall facilitate daylight dimming to luminiares within
3m of the perimeter façade, presenence / absence detection throughout, photocell and time clock.
Lobby / Break out Space
The ground floor entrance and break out space proposals shall be developed in accordance with the
architects design and CIBSE guidance. The lobby shall be illuminated using recessed downlights,
which shall be controlled via a scene set system and dimmable control gear.
The entrance consists of glazed walls with a doorway leading to the Atrium, a double height space
with industrial style pendant luminaires suspended from the first floor ceiling.
V21.1 - Entrance Lighting Scheme
The break out space also be accessed from the entrance, illuminated using an array of recessed
downlights in order to maintain consistency.
This theme is continued throughout the majority of circulation areas, in particular the corridors.
Luminaires in the central corridor space are controlled using the lighting control module (LCM), which
facilitates scene setting / dimming.
V21.2 - Proposed luminaires for the double height Entrance
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V21.3 - View of Atrium and Break Out Area from the entrance
Open Plan Office Areas
The CAT-A open plan office scheme shall feature high quality suspended linear LED luminaires with
dimmable control gear. These shall be mounted perpendicular to the façade and shall achieve 350 –
450 lux and a uniformity above 0.6. In addition, the luminaires around the perimeter of the space shall
have dimmable control to enable daylight linking to be provided. All luminaires shall also be provided
with dimmable control to enable individual control by the occupant.
V21.4 - Open Plan Office Lighting Levels, Based on the Above Array
Whilst cellular spaces are not provided as part of CAT-A works, the lighting array shall be provided to
accommodate this flexibility. The lighting control to these luminaires shall be fully addressable to
prevent the requirement for re-wiring. Each cellular space shall be provided with 2 separate 6 x 3
arrays of suspended linear luminaires with a grey finish. Each array can be further subdivided into 2x3
modular arrays which are controlled via separate LCMs, allowing for flexibility of a cellular office
layout. Office areas also incorporate PIR/PD detectors for presence and daylight linking .
ETAP Lighting R7 - separate ETAP U7 - continuous
V21.5 - Proposed open plan office suspended luminaires
The central corridor space between the two arrays shall feature downlights recessed into galvanised
steel cable trays, further accentuating the overall industrial theme.
V21.6 - Proposed open plan office lighting array. The cable tray section contains recessed downlights
Illuminated non-maintained exit signs shall be located by the emergency exit doors at the end of the
notional corridor, mounted from the cable tray.
The lighting installation shall comprise an intelligent addressable control system and allow the control
of luminaires via presence detectors (PIR), override switches, photocell and timer. The lighting control
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system shall be interfaced to the fire detection and over-ride shall be provided in defined locations and
at the reception desk.
In the open plan office the luminaires shall generally be held on, via time clock control, during
standard working hours and then switched in ‘blocks’ by presence detection outside of these times.
Outside of normal working hours a ‘notional corridor’ shall be programmed and this shall be kept
illuminated when any area is occupied.
Meeting Rooms
The first floor meeting room shall feature recessed downlights featuring a suspended halo-like
pendant fitting in the centre of the room. The downlights on their own provide sufficient lighting levels
in accordance with the relevant building regulations. The pendant luminaire is added as a decorative
feature. In its off state, the centre of the pendant is transparent and therefore does not impair visibility.
The meeting room shall provide local scene set switching capability.
V21.7 - Proposed meeting room lighting scheme
Store / Plant Rooms / Risers
Modular ‘batten type’ luminaires shall be provided in these areas and shall be controlled with via
presence and an override switch.
Communications Room
The communications room shall surface mounted batten type luminaires and controlled via an
absence and manual override switch.
WC and Shower Areas
WCs and showers shall feature decorative recessed downlights within the suspended ceiling.
Luminaires within the showers shall be IP 64 rated to provide moisture protection. Both areas and the
adjacent lobbies shall be controlled with presence detectors from the lighting control system.
V22 Small Power
A complete distributed system of low voltage power shall be provided throughout the buildings at
400V TP&N and 230V SP&N for connection to portable equipment, via socket outlets and fixed
equipment. Specific items of fixed equipment provided with dedicated supplies shall be as follows:
• Fire alarm system
• Provision for future intruder alarm system
• Provision for future access control system
• Mechanical services equipment
• Data racks
• Kitchen Equipment
Final outlets to be positioned to Part M.
Circulation spaces shall consist of accessories flush mounted into walls and finished with a brushed
stainless steel MK type face.
All accessories within plant and store rooms shall be stand-alone metal clad surface mounted with
galvanised conduit/trunking.
Single gang, unswitched socket outlets shall be provided to all circulation areas for cleaning and
maintenance purposes. Distribution of outlets will based upon coverage by maintenance equipment
on a 10m lead. These will be protected by a 30 mA RCD.
Final circuit wiring shall be based upon ring or radial topologies dependent upon circuit requirements.
In either case the maximum number of twin socket outlets per circuit will be 10. All power circuits shall
be derived from local distribution boards fed via appropriately sized MCB’s. Circuits will be wired in
ring or radial format as necessary with local RCD protection to be supplied from local distribution
boards where required.
All circuits shall be wired utilising 6491B cables (Cu/LSF singles) installed within galvanised conduit
and trunking systems routed from the distribution boards.
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All small power circuits will be supplied from final circuit distribution boards and separately metered.
Power will be provided at high level to serve NVHR and cassette units. Lighting LCM circuits will also
be provided at high level on a separate circuit. These will be supplied via a fused connection unit fed
form the distribution board in the risers.
Allow for 3No. 3-compartment screed floor boxes to the entrance area to facilitate a future reception
desk. These floor boxes shall accommodate 2No. double socket outlets and 4No. RJ45 outlets. Allow
CAT6A cabling to be routed to the first floor comms room to serve these outlets.
Power to the comms room cabinets will be distribution at high level on suspended galvanised tray /
basket via BS60309-2 outlets. Coordinate fused connection units with the local DX unit and ancillary
services from the dedicated comms room distribution board.
Isolators and accessories serving the external roof plant are to be weatherproof and derived direct
from the ground floor panel board (condensers) or from the local distribution board.
V32 Uninterruptable Power Supply (UPS)
Provide a tender option for 2No. 3kW stand-alone rack mounted UPS modules with 10 minutes
autonomy, to facilitate a managed shut down of comms equipment in the event of a mains failure. The
supply to the UPS shall be derived from the dedicated comms room distribution board within the room
via high level 16A BS 60309-2 commando outlets. Ensure the heat gains from the UPS modules are
coordinated within the mechanical cooling system.
V40 Emergency Lighting
Emergency luminaires shall be provided as required by BS EN 1838, BS EN 50172 and to the local
authorities requirements. The emergency lighting system shall be designed to operate for a period of
3 hours and shall be of category M3.
Emergency lighting key switches to be provided within the local risers.
V41 External Lighting
Refer to the Peter Brett Associates information for the External Lighting Requirements.
W10 Telecommunications
Coordinate ducting for incoming telecoms services into the comms racks.
Telephony services shall be provided to serve the lift dial and fire alarm dial-out and future reception
telephone line.
All other telecommunications services are to be provided as part of Tenant’s fit-out as required.
W14 Disabled WC / Shower Alarm System
A disabled toilet alarm call system shall be provided to all disabled toilets to comply with BS 8300.
The system shall comprise local call cords, remote reset units and over-door indicators, with the
facility for monitoring via BMS
W15 Information Technology
Allow 2No. 42U 800x800mm ICT racks within the comms room. Ensure at least 1000mm access is
provided on both sides of each rack.
IT equipment (racks, servers, patching switches, WIFI routes) are to be provided by a separate
contract / as part of Tenants’ fit-out.
W30 Information Technology Cabling
Allow IT cabling from the comms room to data points within the landlord’s areas are to be CAT6A.
Allow for an additional 10No. RJ45 points and data cabling for tender purposes services within the
landlord areas to serve potential WIFI routers / additional data points.
W40 Security
Dedicated security containment shall be provided to allow the future tenant/s to install their own
access control, intruder alarm and surveillance systems if required.
Refer to the containment drawings which outlines the design intent for Security trunking to run
horizontally at high level throughout the building and within risers. This shall originate back to the
ground floor LV room and first floor comms room.
The fire alarm and security drawings reflect the requirements for access control containment around
designated doors.
Underfloor ducts shall also to be provided within the entrance lobbies, to facilitate future access
control and intercom to the entrance doors.
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W50 Fire Alarm and Disabled Refuge
An addressable, open protocol, automatic fire detection system shall be provided in accordance with
BS 5839 Parts 1 & 8. The system shall be designed and installed to achieve a system classification of
L1 (provisionally) and to the requirements of the Building Control authority and Fire Engineer. The
fire alarm and detection system design, equipment, installation and testing shall be BAFE / LPCB
approved. Allow tenant’s areas to be provided from separate loops with 30% spare loop capacity.
The fire alarm panel is proposed to be recessed to the rear entrance. Batteries and chargers to the
system shall be sized to provide sufficient power for 48-hour quiescent operation followed by ½ hour
at full output of sounders.
The fire alarm panel shall be provided with a red-care automatic dial-out facility.
Flashing beacons shall be provided throughout the building areas as required under BS5839 Part 1 to
notify a disabled person in the event of an evacuation.
The fire alarm system shall incorporate break glass units, smoke and heat detectors throughout the
new development. Fire alarm interfaces are to be provided to allow the lift, gas solenoid valve,
ventilation plant to allow this to ground and shut down in the event of an evacuation. The fire alarm
cause and effect shall be configured to meet the developed and agreed fire alarm strategy.
Fire alarm cabling throughout shall be installed on cable tray and within galvanised steel conduit to
the underside of the slab. All fire alarm cabling is to be of the ‘enhanced’ category and be provided
with a red outer sheath and accord with the Building Control Officer’s requirements.
Disabled Refuge
A Disabled refuge system shall be provided to serve all disabled refuge intercom locations as
necessary. The system shall be designed to be compliant with BS 5839, Part 9, with a master head-
end handset located location to be agreed. The system shall be locally battery backed with the facility
to be monitored by the BMS.
W52 Lightning Protection
A lightning protection system shall be provided to the building, with the extent subject to a lightning
protection assessment to comply with BS EN 62305. The air termination network shall utilise the
high-level steelwork or metal roof finish at roof level if suitable. If the roof is non-conductive or not of a
suitable thickness/material, a grid of PVC-coated copper/aluminium tape shall be installed to act as
the conductor. The air termination network shall be concealed wherever possible and linked to the
down-conductors, which shall be the steel reinforcing cage within the columns/the structural steel
columns. The lift shaft structural steels and guide rails shall also be bonded back to the lightning
protection system. The down-conductors shall terminate at earth via an earthing termination network
(eg the piled foundation), with a number of reference points installed around the external ground floor
area for maintenance and testing of the system.
Surge protection shall be provided to the building electrical installation, to a level required to meet the
lightning protection risk assessment.
X10 Machine Room Less Lift
An 8 person, 630kg, type 2 lift shall be provided to accommodate one wheelchair user and an
accompanying person shall be provided to serve ground and first floor.
Type 2 ensures accessibility to persons using a manual wheelchair described in BS EN 12183 or an
electrically powered wheelchair of class A or B described in BS EN 12184.
Particular attention to the selection and location of lifts shall be required to ensure compliance with the
Disability Discrimination Act (DDA) 1995. The method implemented by the lift industry to comply with
DDA is BS EN81-70:2003 and this European standard sets out the minimum car dimensions to
accommodate class A, B and C wheelchairs.
Lift Dimensions
A resultant car size of 1200 mm wide x 1400 mm accommodates one wheelchair user and several
other users, which also allows adequate space for a wheelchair to be rotated within the lift car. This is
partially important where only one car entrance exists.
The lift pit depth for the specified lift shall be 1650mm x 1750mm x 1250mm depth.
The lift overrun height (headroom height for safety gear on counterweight) shall be 3600mm (Source:
Schindler 3300 elevator product brochure).
Lift Finish
The lift finish shall be based on the existing Incubator Building 10 person lift, as Schindler 3300 or
equal.
The specified lift shall have brushed stainless steel doors and trim, complete with a mirrored back
wall and floor finish matching the entrance foyer.
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Handrails are to be aluminium brushed handrail
Lift handrail with brushed aluminium finish – Similar to the Original Incubator
The internal lighting within the lift shall be agreed with the Architect and Client. For tender purposes,
allow the lighting to feature ceiling lines.
Lift lighting arranged as ceiling lines
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7. Sustainability
A thermal model of the Alconbury Weald Incubator² building was built using IES Virtual Environment
2015. The thermal model was based on the drawings received from Allford Hall Monaghan Morris
Architects on 24th November 2016. Initial Part L compliance simulations were run to assess the
performance of the current design against the energy and carbon emission targets for the project,
outlined in Alconbury Weald KP1 Sustainability Statement and in the project brief:
• The Building Emission Rate (BER) exceeds Building Regulations Part L 2013
• A minimum 10% energy generation through on-site Low or Zero Carbon (LZC) technologies
as required by the East of England Plan (EEP) Policy ENG1: Carbon Dioxide Emissions and
Energy Performance. However, please note that the EEP no longer exists and therefore this
requirement is not mandatory.
Figure 10.1: IES model of Alconbury Weald Incubator² building
The results of the initial Part L simulations, with and without meeting the 10% energy generation
through on-site LZC technologies, are detailed below including the Building Emission Rate (BER),
Part L 2013 Target Emission Rate (TER), the percentage improvement of the BER upon TER and the
contribution from the proposed photovoltaics (PV) panels.
Photovoltaic (PV) panels A PV array has been included in the calculations in order to comply with Part L only (as agreed with
the Planning Consultant and the Client). The PV array would need to have an annual output of
approximately 3,200kWh/yr. This may require an array of approximately 16 to 21 m², depending on
the orientation of the array and the manufacturer’s panel specification.
Fabric performance The table below details the fabric performance figures that are proposed to be targeted (used in the
thermal model) in comparison with the Part L 2013 acceptable and notional values
Part L Summary To summarise, these are the key points discussed in this document:
• The current design would exceed Building Regulations Part L2A 2013 with the use of a small
PV array, achieving approximately a 0.4% improvement upon Part L.
• A PV array generating 3,200kWh/yr is required, equating to an array of approximately 16 to
21 m², depending on the orientation of the array and the manufacturers panel specification.
• Please note that the architectural design has developed since this analysis to be less onerous
on energy consumption (due to reduced glazing). The analysis shall be updated at the next
design stage.
Figure 10.2: Carbon emissions breakdown for Part L compliance figures
BER (kgCO2/
m2)
Part L 2013 TER
(kgCO2/m2)
Improvement upon Part L
PV array
Annual output
Indicative Area
Without PV 24.3 23.4 Failing to
Comply - -
With PV to pass Part L 23.3 23.4 0.4% 3,200kWh 16 – 21 m²
With PV to meet 10% 21.0 23.4 10.2% 10,720kWh 60 – 70 m²
Element U Values (W/m2.K)
Acceptable Limit Notional Building Proposed Design
Walls 0.35 0.26 0.18
Roof 0.25 0.18 0.15
Floors 0.25 0.22 0.20
Windows/Translucent curtain walling (including frame)
2.2 1.6 1.4
(G Value = 0.4)
Louvres/Opaque curtain walling (including frame)
2.2 0.26 1.2
Air Permeability (m3/m2.hr) 10 3 3
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Solar Shading on South Façade A preliminary solar shading analysis has been carried out using IES Virtual Environment to quantify
the amount of solar radiation received by the south, east and west facades, assess the effectiveness
of the brise-soleil included in the current design and identify the areas where further solar shading
should be installed to diminish solar gains and reduce the risk of overheating. Currently 1800mm deep
brise-soleil has been incorporated in the architectural design. The drawings were received from Allford
Hall Monaghan Morris Architects on 21st of November 2016.
Various brise-soleil systems have been compared and their performance in terms of reducing solar
gains has been evaluated. The following options have been examined:
1. Baseline scenario: Horizontal brise-soleil, depth 1800mm.
2. Option A: Horizontal brise-soleil, depth 1000m.
3. Option B: Vertical brise-soleil, length 1000m.
The analysis concluded that the baseline scenario should be retained for the brise-soleil above the
first floor offices with a combination of Option A or B for the ground floor offices. The Architect
developed the ground floor brise-soleil allowance to be in line with the Option A proposal.
Figure 10.3: Option A, Solar irradiation on the south facade of the building, from 1st May to 30th September
Figure 10.4: Option A, Solar irradiation on the north facade of the building, from 1st May to 30th September
Sun Path Images The images below show the solar angle at 12 noon on 21st June, 21st September and 21st
December (top to bottom). These images illustrate that the installation of brise-soleil in the south
facade shall not only reduce the undesired solar gains during summer period (due to high summer
sun), but shall also allow low-level winter sun to enter the building during winter period, which can
contribute to the reduction of the space heating demand.
Figure 10.5: Sunpath on 21st June
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Figure 10.6: Sunpath on 21st September
Figure 10.7: Sunpath on 21st December
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APPENDIX A - LUMINAIRE SCHEDULE
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APPENDIX B - MECHANICAL, ELECTRICAL AND PUBLIC HEALTH DRAWINGS 2601167-HL-XX-XX-SM-M-560-0010 Space Heating and Cooling Schematic
2601167-HL-XX-XX-SM-E-600-0010 Electrical LV Schematic
2601167-HL-XX-XX-SM-P-523-2310 Above Ground Foul Drainage Schematic
2601167-HL-XX-XX-SM-P-525-2510 Rainwater Drainage Schematic
2601167-HL-XX-XX-SM-P-532-3210 Domestic Water Services Schematic
2601167-HL-XX-GF-GA-U-500-2000 Combined Services Layout, Ground Floor
2601167-HL-XX-FF-GA-U-500-2001 Combined Services Layout, First Floor
2601167-HL-XX-RF-GA-U-500-2002 Combined Services Layout, Roof Level
2601167-HL-XX-GF-GA-M-560-5000 Space Heating and Cooling Layout, Ground Floor
2601167-HL-XX-FF-GA-M-560-5001 Space Heating and Cooling Layout, First Floor
2601167-HL-XX-GF-GA-M-570-7000 Ventilation Layout, Ground Floor
2601167-HL-XX-FF-GA-M-570-7001 Ventilation Layout, First Floor
2601167-HL-XX-GF-GA-E-600-0000 Power and Containment, Ground Floor Layout
2601167-HL-XX-FF-GA-E-600-0001 Power and Containment, First Floor Layout
2601167-HL-XX-GF-GA-E-630-3000 Lighting and Control Layout, Ground Floor
2601167-HL-XX-FF-GA-E-630-3001 Lighting and Control Layout, First Floor
2601167-HL-XX-RF-GA-E-690-3002 Combined Electrical Services Layout, Roof Level
2601167-HL-XX-GF-GA-E-650-5000 Fire Alarm and Security, Ground Floor
2601167-HL-XX-FF-GA-E-650-5001 Fire Alarm and Security, First Floor
2601167-HL-XX-GF-GA-P-523-2300 Above Ground Foul Drainage Layout, Ground Floor
2601167-HL-XX-FF-GA-P-523-2301 Above Ground Foul Drainage Layout, First Floor
2601167-HL-XX-RF-GA-P-523-2302 Above Ground Foul Drainage Layout, Roof Level
2601167-HL-XX-GF-GA-P-525-2500 Rainwater Drainage Layout, Ground Floor
2601167-HL-XX-FF-GA-P-525-2501 Rainwater Drainage Layout, First Floor
2601167-HL-XX-RF-GA-P-525-2502 Rainwater Drainage Layout, Roof Level
2601167-HL-XX-GF-GA-P-532-3200 Domestic Water Services Layout, Ground Floor
2601167-HL-XX-FF-GA-P-532-3201 Domestic Water Services Layout, First Floor
END OF REPORT