logo St Michael and All Angels Mill Hill

Materials and Workmanship

C10 Site survey
C20 Demolition
C30 Shoring/ facade retention
G20 Carpentry/ timber-framing/ first fixing
N11 Domestic kitchen fittings, furnishings and equipment
N12 Commercial catering fittings, furniture and equipment
S90 Hot and cold water supply systems
U90 General ventilation
V90 Electrical systems

Site survey

Surveys - Not Used

Survey techniques

225 Direct measurement surveying
1. Description: Area of proposal
2. Features to be included: Column in north west area of Nave
3. Specific requirements as to method: Measure pipework positions; depth of area suitable for kitchen units; external exit/entry of water pipework and drainage - carefully plan

410 Bench marks
1. Unrecorded bench marks and other survey information: Give notice when found and notify Ordnance Survey.

420 Unforeseen hazards
1. Unrecorded hazards and hazardous materials: Give notice when found. Do not disturb.

430 Survey instruments
1. Equipment calibration: In accordance with manufacturer's recommendations.
2. Site use calibration: To relevant parts of BS 7334-1, -3, -4, -5 and -8.
3. Calibration: Use only persons accredited by the United Kingdom Accreditation Service (UKAS).
4. Calibration compliance: Submit evidence prior to use.

440 Protection
1. Protect the following: Existing timber flooring, walls and columns in the area of proposal

Completion - Not Used


To be read with preliminaries/ general conditions.

5 Desk study/ survey
1. Scope: Before starting deconstruction/ demolition work, examine available information, and carry out a survey of: External wall entry; internal area of pipework.
2. Report and method statements: Submit, describing:
    2.1. Form, condition and details of the structure or structures, the site and the surrounding area.
        2.1.1. Extent: Existing pipework and external wall of drainage exit
    2.2. Type, location and condition of features of historical, archaeological, geological or ecological importance.
    2.3. Type, location and condition of adjoining or surrounding premises that might be adversely affected by removal of the structure or structures or by noise, vibration and dust generated during
deconstruction or demolition.
    2.4. Identity and location of services above and below ground, including those required for the contractor's use, and arrangements for their disconnection and removal.
    2.5. Form and location of flammable, toxic or hazardous materials, including lead-based paint, and proposed methods for their removal and disposal.
    2.6. Form and location of materials identified for reuse or recycling, and proposed methods for removal and temporary storage.
    2.7. Proposed programme of work, including sequence and methods of deconstruction or demolition.
    2.8. Details of specific pre-weakening required.
    2.9. Arrangements for protection of personnel and the general public, including exclusion of unauthorized persons.
    2.10. Arrangements for control of site transport and traffic.
    2.11. Special requirements: Details of services supplied by the statutory authority
3. Format of report: 1 A4 copy

10 Extent of deconstruction/ demolition
1. General: Subject to retention requirements specified elsewhere, deconstruct/ demolish structures down to Levels as shown on drawing PR-02, P2-03, PR-04.

20 Features to be retained
1. General: Keep in place and protect the following: Boundary walls.

30 Services disconnection arranged by contractor
1. General: Gas, Electrical and Water
2. Arrange with the appropriate authorities and responsible private organizations for disconnection of services, and removal of fittings and equipment owned by those authorities prior to starting
deconstruction or demolition

32 Disconnection of drains
1. General: Locate, disconnect and seal disused drain connections. Agree where drains are to be sealed
2. Sealing: Permanent, and within the site

35 Live foul and surface water drains
1. Drains and associated manholes, inspection chambers, gullies, vent pipes and fittings: Leave clean and in working order at completion of deconstruction or demolition work

50 Workmanship
1. Standard: Demolish structures in accordance with BS 6187.
2. Operatives
    v2.1. Appropriately skilled and experienced for the type of work.
    2.2. Holding, or in training to obtain, relevant Construction Skills certification of competence.
3. Site staff responsible for supervision and control of work: Experienced in the assessment of risks involved
and methods of deconstruction and demolition to be used.

55 Site hazards
1. Precautions: Prevent fire or explosion caused by gas and vapour from tanks, pipes, etc.
2. Dust:
    2.1. Lead dust: Submit method statement for control, containment and clean-up regimes.
3. Site operatives and general public: Protect from health hazards associated with vibration, dangerous fumes
and dust arising during the course of the works.

60 Adjoining property
1. Temporary support and protection: Provide. Maintain and alter, as necessary, as work proceeds. Do not leave unnecessary or unstable projections.
2. Defects: Report immediately on discovery.
3. Damage: Minimize disturbance. Repair promptly to ensure safety, stability, weather protection and security.
4. Support to foundations: Do not disturb.

70 Partly demolished structures
1. General: Leave in a stable condition, with adequate temporary support at each stage to prevent risk of uncontrolled collapse. Make secure outside working hours.
2. Temporary works: Prevent overloading due to debris.
3. Access: Prevent access by unauthorized persons.

71 Dangerous openings
1. General: Provide guarding at all times, including outside of working hours. Illuminate during hours of darkness.
2. Access: Prevent access by unauthorized persons.

78 Unforeseen hazards
1. Discovery: Give notice immediately when hazards, such as unrecorded voids, tanks, chemicals, are discovered during deconstruction or demolition.
2. Removal: Submit details of proposed methods for filling, removal, etc.

85 Site condition at completion
1. Debris: Clear away and leave the site in a clean, tidy and secure condition.

Shoring/ facade retention


To be read with preliminaries/ general conditions.

110 Terms used in façade retention
1. Definitions: As CIRIA Report, C579, 'Retention of masonry façades – best practice guide', Glossary and as follows:
    1.1. Façade: Elevations that are to be kept in place, including external elevations, internal elevations and party walls listed as requiring support.
    1.2. Retention structure: The temporary or permanent façade retention structure.

120 Retention structure generally
1. Extent of façade: north wall to nave
2. Nature of structure: Solid stone
3. Position of structure: External

System performance - Not Used

Products - Not Used


600 Workmanship
1. Standard: To the designated code of practice and the falsework standard.
2. Operatives skill and experience: Appropriate for the type of work.
    2.1. Evidence: Submit prior to commencement.

640 Enabling work
1. Scope
    1.1. Before erection of retention structure
        1.1.1. Remove hazardous materials, as section C20.
        1.1.2. Repair façade as agreed, to facilitate connection to retention structure.
        1.1.3. Other requirements: None
    1.2. Before demolition commences: No requirements

660 Erecting retention structure
1. Existing and new services which may be affected by retention structure: Locate and mark positions. Provide temporary diversions, as necessary.
2. Existing foundations: Prevent excessive load being imposed onto foundations of façade and other structures retained in permanent works.
3. Retention structure: Erect and connect to façade, taking precautions to prevent damage. Allow for movement of structure which may occur before, during and after demolition work.
4. Connections: Tighten/ wedge to prevent slip under load.
5. Vulnerable areas of façade: Protect jambs of openings and other surfaces that could be knocked or rubbed.
    5.1. Method of protection:
6. Damage to adjoining property or façade: Give notice of damage arising from the execution of the works. Agree methods of repair.
7. Compliance check: Check retention structure for compliance with design at agreed stages during erection.
8. Commissioning: When retention structure and connections to façade are complete, obtain permission to proceed with demolition and give notice before commencing demolition.

670 Unforeseen hazards
1. General: Give notice if unrecorded voids, flues, bonding timbers, services, etc. are discovered during erection of support systems.
2. Action: Submit proposals for methods for infill, making good, relocation of connections, etc. as required.


910 Dismantling retention structure
1. Permanent connections: When complete between façade and new construction, give notice.
2. Disconnection and dismantling: Obtain permission before proceeding.

940 Repairs to façade
1. Scope: Ensure pipework is carefully planned; submit proposals and ensure visibility of new pipework sensibly placed.

Carpentry/ timber-framing/ first fixing


2 Timber procurement
1. Timber (including timber for wood-based products): Obtained from well-managed forests/ plantations in
accordance with:
    1.1. The laws governing forest management in the producer country or countries.
    1.2. International agreements such as the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
2. Documentation: Provide either in accordance with chain of custody certification scheme requirements:
    2.1. Documentary evidence (which has been or can be independently verified) regarding the provenance of all timber supplied. or
    2.2. Evidence that suppliers have adopted and are implementing a formal environmental purchasing policy for timber and wood-based products.
3. Chain of Custody Certification scheme: Contractor's choice, in accordance with UK Government Timber Procurement Policy (UKTPP), i.e. FSC, GiB or PEFC

5 Structural softwood
1. Description: back panel to kitchen units and support to servery
2. Grading standard: To the appropriate BS EN 14081-1-compliant standard.
    2.1. Grade: GS to BS 4978
3. Strength class to BS EN 338: C16
4. Treatment: Flame-retardant impregnation to NBS section Z12 and Wood Protection Association Commodity Specification FR3, Type INT2

7 Structural hardwood
1. Description:
2. Species ……….
3. Grading standard: To the appropriate BS EN 14081-1-compliant standard.
    3.1. Grade:
4. Strength class to BS EN 338:
5. Surface finish:
6. Treatment:

30 Selection and use of timber
1. Timber members damaged, crushed or split beyond the limits permitted by their grading: Do not use.

32 Notches, holes and joints in timber
1. Notches and holes: Position in relation to knots or other defects so that the strength of members will not be reduced.
2. Scarf joints, finger joints and splice plates: Do not use without approval.

35 Processing treated timber
1. Cutting and machining: Carry out as much as possible before treatment.
2. Extensively processed timber: Retreat timber sawn lengthways, thicknessed, planed, ploughed, etc.
3. Surfaces exposed by minor cutting/ drilling: Treat with two flood coats of a solution recommended by main treatment solution manufacturer.

40 Moisture content
1. Moisture content of wood and wood-based products at time of installation: Not more than:
    1.1. Covered in generally unheated spaces: 24%.
    1.2. Covered in generally heated spaces: 20%.
    1.3. Internal in continuously heated spaces: 20%.

43 Bolted joints
1. Bolt spacings (minimum): To BS EN 1995-1-1, section 8.5.
2. Holes for bolts: Located accurately and drilled to diameters as close as practical to the nominal bolt diameter and not more than 2 mm larger.
3. Washers: Placed under bolt heads and nuts that would otherwise bear directly on timber. Use spring washers in locations which will be hidden or inaccessible.
4. Bolt tightening: So that washers just bite the surface of the timber. Ensure that at least one complete thread protrudes from the nut.
    4.1. Checking: At agreed regular intervals. Tighten as necessary.

50 Additional supports
1. Provision: Position and fix additional studs, noggings and/ or battens to support edges of sheet materials, and wall/ floor/ ceiling-mounted appliances, fixtures, etc. shown on drawings.
2. Material properties: Timber to be of adequate size and have the same treatment as adjacent timber supports.

55 Joists generally
1. Centres: Equal, and not exceeding designed spacing.
2. Bowed joists: Installed with positive camber.
3. End joists: Positioned about 50 mm from masonry walls.

60 Joists on hangers
1. Hangers: Bedded directly on and hard against supporting construction. Do not use packs or bed on mortar.
2. Joists: Cut to leave not more than 6 mm gap at each end. Rebated to lie flush with underside of hangers.
3. Fixing to hangers: A nail in every hole.

70 Trimming openings
1. Trimmers and trimming joists: Not less than 25 mm wider than general joists.

75 Trussed rafter installation
1. Erection: To Trussed Rafter Association site installation guide.
2. Trusses generally: Do not modify without approval.
3. Damaged trusses: Do not use.
4. Fixing: With truss clips. Bottom chords of standard trusses and rafters of raised tie trusses bearing fully on wall plates.
5. Bottom chords of standard trusses: Do not fix to internal walls until roofing is complete and cisterns are installed and filled.

Domestic kitchen fittings, furnishings and equipment

To be read with preliminaries/ general conditions

10 Fitted base units and wall units
1. Description: L-shape base units only; 7 total unit as drawing PR-01 Proposed Ground Plan
2. Standard: To BS EN 14749.
3. Manufacturer: DIY kitchen
    3.1. Product reference: Norton Oak, grained timber
4. Structural performance: To BS 6222-2, test level G.
5. Dimensions: To BS EN 1116.
6. Surface finishes: To BS 6222-3.
7. Doors and drawer fronts
    7.1. Material: Grained wood , solid oak frame with veneered panel
    7.2. Finish and colour: Natural Lancaster Oak
    7.3. Edges: Rigid square kitchen
    7.4. Other requirements: None
8. Side panels, plinths and shelves
    8.1. Material: Wood veneer
    8.2. Finish and colour: Clear finish
    8.3. Edges: Veneer
9. Accessories: None

20 Worktops
1. Description: To proposed kitchen units and servery
2. Standard: To BS 6222-3
3. Manufacturer: Corian
    3.1. Product reference: Dune Prima
4. Material: Corian
5. Dimensions: As specified on Proposed Plan
6. Support: Kitchen cupboard units
7. Other requirements: None.

30 Sinks, taps, traps and wastes
1. Description: Undermount 1.5 sink
2. Sinks
    2.1. Standard: To BS EN 13310
    2.2. Manufacturer: iNNova
        2.2.1. Product reference: Quadra 1.5 BBR - 1.5 Bowl Undermount
    2.3. Configuration: Sink-and-a-half with double-drainer
    2.4. Overall size: 585mm x 440mm
    2.5. Material: Stainless steel
        2.5.1. Colour and finish: Satin finish
3. Tap/ chainstay/ overflow holes: One tap hole, centre & Overflow hole
4. Taps: Mixer
    4.1. Manufacturer: iNNova
        4.1.1. Product reference: Torrente Curved Mixer Tap (Brushed Steel finish)
    4.2. Operation: 0.5 bar
    4.3. Material: Brushed steel
5. Wastes: Pop up
    5.1. Standard: To BS EN 274-1, -2 and -3
    5.2. Manufacturer: Innova
        5.2.1. Product reference: With sink pack
    5.3. Size: To fit sink
    5.4. Material: Brused steel
    5.5. Tail: Slotted
6. Traps: Tubular, P type
    6.1. Standard: To BS EN 274-1, -2 and -3
    6.2. Manufacturer: Innova
        6.2.1. Product reference: Contractor's choice
    6.3. Size: To fit waste
    6.4. Depth of seal (minimum):
7. Accessories: Support brackets

40 Appliances
1. Item: Integrated dishwasher
2. Manufacturer: DIY Kitchens; Zanussi
    2.1. Product reference: Zanussi Fully integrated 450mm slim line dishwasher, 10 place setting
3. Colour and finish: Norton Oak Timber panel
4. Service connections: Hot and cold water, Mains electricity

50 Sealant
1. Standard: To BS EN ISO 11600, Class F20 HM
2. Type: One-part silicone
    2.1. Manufacturer: Contractor's choice
        2.1.1. Product reference: Contractor's choice
3. Colour: To match worktop


60 Moisture content of wood and wood-based boards
1. Control and monitoring
    1.1. Method statement: Submit.

65 Installation generally
1. Fixings and adhesives: As section Z20.
2. Services:

70 Installing units and worktops
1. General: Well fitting, stable and secure.

75 Installing appliances
1. Connections: Provide to electric, gas, and hot and cold water services.

80 Installing sinks, taps and wastes
1. Water supply: According to BS EN 806-2 and -4.
2. Taps
    2.1. Fixing: Secure, watertight seal with the appliance.
    2.2. Positioning: Hot tap to left of cold tap as viewed by the user of the appliance.
3. Wastes
    3.1. Bedding: Waterproof jointing compound.
    3.2. Fixing: With resilient washer between appliance and backnut.

90 Installing trims and mouldings
1. Lengths: Un-jointed between angles or ends of runs.
2. Angle joints: Mitred.

Commercial catering fittings, furniture and equipment


320 Worktops
1. Description: Worktop to proposed kitchen base units
2. Manufacturer: Corian
    2.1. Product reference: Corian Dune Prima
3. Dimensions: As measured on Proposed Plan
4. Material: Corian stone effect / solid surface
6. Exposed edges: Not required
7. Support: To base units
    7.1. Material: Manufacturer's standard
    7.2. Finish/ Colour: Manufacturer's standard

360 Servery counters
1. Description: Upper level Servery to kitchen as shown on Proposed Plan and Section
2. Manufacturer: Corian
    2.1. Product reference: Dune Prima (same as worktop)
3. Dimensions: 250mm x 2000mm
4. Material: Manufacturer's standard
5. Finish/ Colour: Manufacturer's standard
6. Service connections: Electricity
7. Power rating: 1 kW
8. Other requirements: Timber support

380 Sinks, taps, traps and wastes
1. Description: Undermounted sink
2. Sinks
    2.1. Manufacturer: Innova, supplied by DIY kitchens
        2.1.1. Product reference: Piazza single bowl
    2.2. Configuration: single bowl
    2.3. Overall size: 440 x 440mm
    2.4. Material: Stainless steel
    2.5. Finish/ Colour: Satin finish
3. Support: Reinforcing brace; undermounted to Corian worktop
    3.1. Material: Manufacturer's standard
    3.2. Finish/ Colour: Manufacturer's standard
4. Tap/ Chainstay/ Overflow holes: Overflow hole.
5. Taps: Mixer
    5.1. Manufacturer: Innova
        5.1.1. Product reference: Torrenta Curved Mixer Tap (Brushed Steel finish)
    5.2. Operation: Lever
    5.3. Material: Chromed steel
6. Wastes: Pop up
    6.1. Standard: To BS EN 274-1, -2 and -3.
    6.2. Manufacturer: Innova
        6.2.1. Product reference: Sink pack
    6.3. Size: To fit sink
    6.4. Material: Chromed steel
    6.5. Tail: Slotted
7. Traps: Tubular, P type
    7.1. Standard: To BS EN 274-1, -2 and -3.
    7.2. Manufacturer: Contractor's choice
        7.2.1. Product reference: Contractor's choice
    7.3. Size: To fit sink
    7.4. Material: Copper
    7.5. Depth of seal (minimum): 75 mm
8. Other requirements: None

400 Dishwashing machine
1. Description: 450mm slim line dishwasher
2. Manufacturer: Zanussi, supplied also by DIY Kitchens
    2.1. Product reference: Zanussi Product code: ZSLN2321
3. Dimensions: 450mm x 600mm
4. Material: integrated with timber cupboard
5. Finish/ Colour: Manufacturer's standard
6. Capacity: 10 place setting
7. Service connections: Mains cold water Electricity
8. Water consumption: 3 litre per wash cycle
9. Power rating 1760/2100W.
10. Wash temperature: 60- 90°C, thermostatic control
11. Accessories: Manufacturer's standard
12. Other requirements: None

410 Refrigeration and freezer units
1. Item: Built-under Fridge
2. Manufacturer: Zanussi
    2.1. Product reference: ZEAN82FR
3. Dimensions: 596 x 547 mm
4. Material: Manufacturer's standard
5. Finish/ Colour: With kitchen door integrated on fridge door
6. Capacity: Unknown
7. Service connections: Electricity
8. Other requirements: Left hand hinged door Left hand hinged door

420 Cupboards and storage units
1. Item: Base units
2. Manufacturer: DIY kitchens
    2.1. Product reference: Nortan Oak doors
3. Dimensions: As shown on proposed plan
4. Material: Oak
5. Finish/ Colour: Oak
    5.1. Edges: Wood veneer
6. Accessories: Adjustable shelving

440 Purpose made
1. Description:
2. Manufacturer:
3. Dimensions:
4. Timber: To BS EN 942.
    4.1. Species:
    4.2. Appearance class:
    4.3. Moisture content on delivery:
5. Wood-based boards:
6. Metal:
    6.1. Grade:
7. Other materials:
8. Finishes:
9. Adhesive:
10. Fixings:
    10.1. Fasteners:
11. Joinery workmanship: As section Z10.
12. Metalwork materials and workmanship: As section Z11.
13. Other requirements:

460 Miscellaneous equipment
1. Item: Tea & Coffee making facility
2. Manufacturer: Employer's choice
    2.1. Product reference: Employer's choice
3. Size/ Capacity: Employer's choice
4. Material: Employer's choice
    4.1. Finish/ Colour: Stainless steel suggested by Architect
5. Other requirements: Not loud.

470 Sealant
1. Standard: To BS EN ISO 11600, class F20 HM
2. Type: One part silicone
    2.1. Manufacturer: Submit proposals
    2.2. Product reference: Submit proposals
3. Colour: clear


610 Moisture content of wood and wood-based boards
1. Control and monitoring
    1.1. Method statement: Submit.

620 Installation generally
1. Fixing and fasteners: As section Z20.
2. Services:

630 Installing equipment, units, appliances and worktops
1. General: Correctly positioned and aligned, stable and secure.

640 Services to equipment, units and appliances
1. Connections: Provide to electric, gas, and hot and cold water services

650 Installing sinks, taps, traps and wastes
1. Water supply: To BS EN 806-1, -2, -3, -4 and -5 and BS 8558.
2. Taps
    2.1. Fixing: Secure, watertight seal with the appliance.
    2.2. Positioning: Hot tap to left of cold tap as viewed by the user of the appliance.
3. Wastes
    3.1. Bedding: Waterproof jointing compound.
    3.2. Fixing: With resilient washer between appliance and backnut.

660 Sealant bedding and pointing
1. Application: As section Z22
2. Bedding:
3. Pointing:

670 Trims
1. Lengths: Unjointed between angles or ends of runs.
2. Angle joints: Mitred.


910 General
1. Doors and drawers: Accurately aligned, not binding. Adjusted to ensure smooth operation.
2. Ironmongery: Checked, adjusted and lubricated to ensure correct functioning.

920 Equipment, units and appliances
1. Test: Ensure that all functions and features work correctly.
2. Documentation: Submit guarantees, instruction manuals, etc.

Hot and cold water supply systems


110 Mains cold water supply
1. Description: To kitchen sink and dishwasher water supply
2. Estimated daily consumption: For events and daily use
3. Position of incoming mains water supply: Via North wall; submit proposals
4. Drinking water outlets: Required
5. Water meters: Submit design and cost proposals
6. Water softener: Not required
7. Pipelines: Submit design and cost proposals
    7.1. Accessories: Submit design and cost proposals
8. Valves: Submit design and cost proposals Draining taps
9. Insulation: Submit design and cost proposals
10. Sanitary appliances: Kitchen sink only
11. Control: Mixer tap
12. Accessories: Submit design and cost proposals
13. Completion: Standard tap and drain for kitchen and sink and dishwasher as clause N11

140 Direct hot water storage supply
1. Description: Hot water tap
2. Position of unit: Submit proposals
3. Direct hot water storage unit: Submit design and cost proposals
    3.1. System: Submit design and cost proposals
4. Capacity:
5. Pipelines:
    5.1. Accessories:
6. Valves:
7. Pump:
8. Insulation:
9. Sanitary appliances:
10. Controls:
11. Accessories:
12. Completion:

System performance

210 Design
1. Description: Entry/exit of water pipes
2. Design: Complete the design of the hot and cold water supply system.
3. Standard: To BS EN 806-2, BS 8558 and in accordance with HSE publication ‘The control of legionella bacteria in water systems. Approved code of practice and guidance’.
4. Proposals: Submit drawings (showing equipment positions and pipeline routes), technical information, calculations and manufacturers' literature.

220 Cold water supply
1. Incoming mains water supply
    1.1. Location: Kitchen sink
    1.2. Site factors: To be investigated; Submit proposals
2. Storage capacity: Submit proposals
3. Drinking water outlets: Required
4. Pumped supply: Not required

250 Pipeline sizes
1. Sizing: Calculate sizes to meet simultaneous demand for the building in accordance with BS 8558 or BS EN 806-3. Submit proposals.
2. Performance
    2.1. Water velocity (maximum): 1.3 m/s for hot water and 2.0 m/s for cold water.
    2.2. Filling time (maximum) for cold water storage cistern: Submit proposals.


315 Water meters
1. Description: Thames Water
2. Standard: To BS EN ISO 4064-1.
3. Type: Single meters
4. Manufacturer: Submit proposals
    4.1. Product reference: Submit proposals
5. Size: Submit proposals
6. Features: Pulsed output for remote monitoring

520 Polyethylene pipelines for underground use
1. Standard: To BS EN 12201-2 and -3.
2. Jointing: Compression fittings.
3. Colour: Blue.

560 Warning/ overflow pipes to cisterns
1. Material: Copper
2. Jointing: Submit proposals
3. Minimum OD: Greater than inlet pipe OD and at least 22 mm.

615 Thermostats
1. Description: To Hot water
2. Standards: To BS EN IEC 60730-2-9 and BS EN 61058-2-5.
3. Type: Strap-on.
4. Manufacturer: Contractor's choice
    4.1. Product reference: Contractor's choice

620 Valves generally
1. Types: Approved for the purpose by local water supply undertaker and of appropriate pressure and/ or temperature ratings.
2. Control of valves: Fit with handwheels for isolation and lockshields for isolation and regulation of circuits or equipment.

640 Draining taps
1. Description:
2. Standard: Copper alloy to BS 2879, type 1, hose connection pattern, Kitemark-certified.

675 Stop valves, underground
1. Standard: DZR copper alloy CZ 132 to BS 5433.


715 Installation generally
1. Installation: To BS EN 806-4.
2. Performance: Free from leaks and the audible effects of expansion, vibration and water hammer.
3. Fixing of equipment, components and accessories: Fix securely, parallel or perpendicular to the structure of the building.
4. Preparation: Immediately before installing tanks and cisterns on a floor or platform, clear the surface completely of debris and projections.
5. Corrosion resistance: In locations where moisture is present or may occur, provide corrosion-resistant fittings/ fixings and avoid contact between dissimilar metals by use of suitable washers, gaskets, etc.

718 Installing water meters
1. Standard: To BS EN ISO 4064-5.

720 Installing cisterns
1. Outlet positions: Connect lowest outlets at least 30 mm above bottom of cistern.
2. Access: Fix cistern with a minimum clear space of 350 mm above, or 225 mm if the cistern does not exceed 450 mm in any dimension.

725 Installing warning/ overflow pipes to cisterns
1. Difference (minimum) between normal water level and overflow level
    1.1. Cold water storage cisterns: The greater of 32 mm or the bore of warning pipe.
    1.2. Feed and expansion cisterns: Sufficient to allow 20% increase in the volume of water in the tank, plus 25 mm.
2. Vertical distance (minimum) of water supply inlet above overflow level: Bore of warning pipe.
3. Fall (minimum): 1 in 10.
4. Installation: Support to prevent sagging. Terminate pipes separately in prominent positions with turned down ends. Turn down within the cistern. Terminate 50 mm below normal water level.
5. Insulation: Insulate within the building where the pipe is in an uninsulated space and subject to freezing.

727 Installing vent pipes over cisterns
1. Route: Install with no restrictions or valves and rising continuously from system connection to discharge over cistern.
2. Internal diameter (minimum): 20 mm.

730 Installing water softeners
1. Position: Downstream of supply to drinking water taps.
2. Supply continuity: Fit bypass pipe and stop valves for continuity of water supply if softener becomes inoperable or is removed.
3. Drains: Connect overflow/ drain lines to trap and waste.
4. Back siphonage: Provide for prevention of back siphonage of brine during regeneration process.

790 Pipelines installation
1. Appearance: Install pipes straight, and parallel or perpendicular to walls, floors, ceilings, and other building elements.
2. Pipelines finish: Smooth, consistent bore, clean, free from defects, e.g. external scratching, toolmarks, distortion, wrinkling, and cracks.
3. Concealment: Generally conceal pipelines within floor, ceiling and/ or roof voids.
4. Access: Locate runs to facilitate installation of equipment, accessories and insulation and allow access for maintenance.
5. Arrangement of hot and cold pipelines: Run hot pipelines above cold where routed together horizontally. Do not run cold water pipelines near to heating pipelines or through heated spaces.
6. Electrical equipment: Install pipelines clear of electrical equipment. Do not run pipelines through electrical enclosures or above switch gear distribution boards or the like.
7. Insulation allowance: Provide space around pipelines to fit insulation without compression.

800 Pipelines fixing
1. Fixing: Secure and neat.
2. Joints, bends and offsets: Minimize.
3. Pipeline support: Prevent strain, e.g. from the operation of taps or valves.
4. Drains and vents: Fix pipelines to falls. Fit draining taps at low points and vents at high points.
5. Thermal expansion and contraction: Allow for thermal movement of pipelines. Isolate from structure. Prevent noise or abrasion of pipelines caused by movement. Sleeve pipelines passing through walls, floors or other building elements.
6. Dirt, insects or rodents: Prevent ingress.

805 Installing thermoplastics pipeline
1. Primary heating circuits: Install length of copper pipe between boiler and thermoplastics pipeline

810 Supports for copper and stainless steel pipelines
1. Spacing: Fix securely and true to line at the following maximum centres:
    1.1. 15 and 22 mm pipe OD: 1200 mm horizontal, 1800 mm vertical.
    1.2. 28 and 35 mm pipe OD: 1800 mm horizontal, 2400 mm vertical.
    1.3. 42 and 54 mm pipe OD: 2400 mm horizontal, 3000 mm vertical.
2. Additional supports: Locate within 150 mm of connections, junctions and changes of direction.

815 Supports for exposed thermoplastics pipelines
1. Spacing: Fix securely and true to line at the following maximum centres:
    1.1. Up to 16 mm pipe OD: 300 mm horizontal, 500 mm vertical.
    1.2. 17-25 mm pipe OD: 500 mm horizontal, 800 mm vertical.
    1.3. 26-32 mm pipe OD: 800 mm horizontal, 1000 mm vertical.
2. Additional supports: Locate within 150 mm of connections, junctions and changes of direction.

820 Bends in thermoplastics pipelines
1. Bends: Do not use 90° elbow fittings instead of 90° bends.
2. Large radius bends: Support at maximum centres.
3. 90° bends: Fix pipe clips either side of bend.
4. Small radius bends: Fully support 90° bends with cold form bend fixtures.

830 Pipeline spacing
1. Clearance (minimum) to face of wall-fixed pipes or pipe insulation
    1.1. From floor: 150 mm.
    1.2. From ceiling: 50 mm.
    1.3. From wall: 15 mm.
    1.4. Between pipes: 25 mm.
    1.5. From electrical conduit, cables, etc.: 150 mm.

840 Joints in copper and stainless steel pipelines
1. Preparation: Cut pipes square. Remove burrs.
2. Joints: Neat, clean and fully sealed. Install pipe ends into joint fittings to full depth.
3. Bends: Do not use formed bends on exposed pipework, except for small offsets. Form changes of direction with radius fittings.
4. Adaptors for connecting dissimilar materials: Purpose designed.
5. Substrate and plastics pipes and fittings: Do not damage, e.g. by heat when forming soldered joints.
6. Flux residue: Clean off.

841 Capillary joints in plastics-coated pipelines
1. Plastics coating: Do not damage, e.g. by direct or indirect heat. Wrap completed joint (when cool) with PVC tape of matching colour, half lapped.

845 Joints in thermoplastics pipelines
1. Standard: Fusion jointing in accordance with WIS 4-32-08.
2. Fittings and accessories for joints: Purpose designed.
3. Preparation: Cut pipes square. Remove burrs.
4. Joints: Neat, clean and fully sealed. Install pipe ends into joint fittings to full depth.
5. Compression fittings: Do not overtighten.

850 Pipelines entering buildings
1. Depth: Lay pipes at least 750 mm and no more than 1350 mm below finished ground level.
2. Pipelines rising into building within 750 mm of the external face of the external wall or passing through a ventilated void below floor level: Insulate from finished floor level to 600 mm beyond external face of building.
3. Ends of pipeducts: Seal both ends to a depth of at least 150 mm.

855 External supply pipelines
1. Requirement: Insulate pipelines exposed to air less than 750 mm below finished ground level or more than 1350 mm below finished ground level.

860 Installation of insulation to pipelines
1. Standard: In accordance with BS 5970.
2. Cold water pipelines: Insulate in unheated spaces. Insulate potable cold water pipelines.
3. Hot water pipelines: Insulate, except for short lengths in prominent positions next to appliances.
4. Appearance: Fix securely and neatly. Make continuous over fittings and at supports. Leave no gaps. Locate split on ‘blind’ side of pipeline.
5. Timing: Fit insulation after testing.

865 Installing insulation to cisterns
1. Standard: In accordance with BS 5970.
2. General: Fix securely to sides and top of cisterns. Leave no gaps.
3. Access cover: Allow removal of cover with minimum disturbance to insulation.
4. Underside of cistern: Insulate where exposed in unheated spaces.

870 Installing valves
1. Isolation and regulation valves: Provide on equipment and subcircuits.
2. Access: Locate where valves can be readily operated and maintained and next to equipment which is to be isolated.
3. Connection to pipework: Fit with joints to suit the pipe material.


910 Flushing and filling
1. Standard: To BS EN 806-4.

920 System disinfection
1. Disinfection: To BS EN 806-4.

930 Testing
1. Standard: To BS EN 806-4.
2. Notice (minimum): Three days.
3. Preparation: Secure and clean pipework and equipment. Fit cistern and tank covers.
4. Leak testing: Start boiler and run the system until all parts are at normal operating temperatures and then allow them to cool down to cold condition for a period of three hours.
5. Pressure testing: At both hot and cold conditions joints, fittings and components must be free from leaks and signs of physical distress when tested for at least one hour as follows:
    5.1. Systems fed directly from the mains, and systems downstream of a booster pump: Apply a test pressure equal to 1.5 times the maximum pressure to which the installation or relevant part is
designed to be subjected in operation.
    5.2. Systems fed from storage: Apply a test pressure equal to the pressure produced when the storage cistern is filled to its normal maximum operating level.
    5.3. Inaccessible or buried pipelines: Carry out hydraulic pressure test to twice the working pressure.

940 Commissioning
1. Standard: To BS EN 806-4.
2. Equipment: Check and adjust operation of equipment, controls and safety devices.
3. Outlets: Check operation of outlets for satisfactory rate of flow and temperature.

950 Testing service pipelines
1. Test method: Disconnect from the mains, fill with potable water, exclude air, and apply at least twice the working pressure for one hour.
2. Test criterion: No leakage.

960 Documentation
1. Manufacturers' operating and maintenance instructions: Submit for equipment and controls.
2. System operating and maintenance instructions: Submit for the system as a whole giving optimum settings for controls.
3. Record drawings: Submit drawings showing the location of circuits and operating controls.

970 Operating tools
1. Tools: Supply tools for operation, maintenance and cleaning purposes.
2. Valve keys: Supply keys for valves and vents.

980 Labels
1. Valve labels: Provide labels on isolating and regulating valves on primary circuits, stating their function.

General ventilation

General - Not Used

System performance

210 Design
1. Description: Ventilation to kitchen appliances; fridge and dishwasher; air vent grill cover beneath appliance unit
2. Design: Complete the design of the ventilation system.
3. Ventilation rate: ??
4. Proposals: Submit drawings (showing equipment positions and ductwork routes), technical information, calculations and manufacturers' literature.


430 Condensation traps
1. Description:
2. Manufacturer:
    2.1. Product reference:
3. Outlet:
    3.1. Connection type:
    3.2. Connection size:

Execution - Not Used


910 Commissioning
1. Standard: In accordance with BS EN 14134.
2. Ventilation system: Balance airflow using methods recommended by the system manufacturer.
    2.1. Performance:
3. Operation: Examine ductwork for leakage. Test the operation of fans, equipment, controls and sensors. Verify correct operation. Submit report.

920 Operation and maintenance
1. Operating and maintenance instructions: Submit copies of manufacturers' operating and maintenance instructions for equipment and controls.
2. Documents: Include all test and fire certificates.
3. Tools: Supply tools for operation, maintenance and cleaning purposes, including keys for valves and vents.

Electrical systems

General - Not Used

System performance

220 Design of low-voltage incoming supply
1. Design and detailing: Complete for the low-voltage incoming supply.
2. Spare capacity: 10% of connected electrical load
3. Proposals: Submit drawings showing equipment positions and routes, technical information and calculations
4. Evidence of agreement with electricity distributor: Submit
5. General: Manage and liaise with the electricity distributor and determine: Location of the incoming supply.
6. Electricity supplier: Speak to Employer
    6.1. Coordination: Liaise with the electricity supplier, complete an application for supply of electricity and manage installation of metering equipment

240 Design of general lighting system
1. Purpose: Under servery lighting, under cupboard lighting
2. Design and detailing: Complete for the general lighting system.
3. Standard: To BS EN 12464-1
4. Room: Nave kitchene
    4.1. Maintained average illuminance: 200 lux
    4.2. Glare index: 16
    4.3. Controls: Automatic on arrival
5. Maintenance: Submit proposals for the maintenance/ relamping regime


319 Cable distribution cabinets
1. Description: For dishwasher, fridge
2. Manufacturer: Contractor's choice
    2.1. Product reference: Contractor's choice
3. Standards: To BS EN IEC 61439-1 and BS EN 61439-5.
4. Rated operational voltage (Ue): 415 V
5. Rated operational frequency: As circuit schedules
6. Number of phases: Three
7. Incoming device: Switch-disconnector-fuse to BS EN IEC 60947-1 and -3
8. Number of outgoing ways: Contractor's choice
9. Outgoing devices: Submit proposals
10. Busbars and connections
    10.1. Type: Fully shrouded.
    10.2. Rated operational current (Ie): Contractor's choice
11. Neutral and earth bars: Individual terminal for each outgoing circuit.
12. Spare ways: Fit with blank plates
13. Identification
    13.1. Neutral and earth bar terminals: Label with the outgoing circuit reference.
    13.2. Cable terminations: Label with circuit reference, with push-on plastic markers
14. Spare outgoing devices: Submit proposals
15. Enclosure
    15.1. Ingress protection (minimum): To BS EN 60529, IP45
    15.2. Impact protection (minimum): To BS EN 62262, IK10
    15.3. Finish: Stainless steel brushed
    15.4. Colour: brushed
    15.5. Backboard: Contractor's choice
16. Accessories: Internal lighting


610 Electrical installation generally
1. Standard: In accordance with BS 7671.

615 Installing connection to incoming supply
1. Main switchboard/ distribution board: Connect to main incoming metering equipment.
2. Nature of connection: Liaise with the DNO to ensure the correct size, quantity and type of cable is provided for connection to their equipment.

645 Installing cable tray
1. Support: Submit proposals
2. Access: Provide space encompassing cable trays to permit access for installing and maintaining cables
3. Supports and fasteners: Avoid contact between dissimilar metals. Use corrosion-resistant components in locations where moisture may occur.
4. Cutting: Along an unperforated line. Minimize. Make good edges. Treat surface as the tray
5. Earth protection: Ensure that, where utilized, tray jointing pieces are properly fixed and provide satisfactory continuity between the separate sections of containment.

650 Installing cable basket
1. Support: Submit proposals
2. Access: Provide space encompassing cable basket to permit access for installing and maintaining cables
3. Supports and fasteners: Avoid contact between dissimilar metals. Use corrosion-resistant components in locations where moisture may occur.
4. Earth protection: Ensure that, where utilized, basket jointing pieces are properly fixed and provide satisfactory continuity between the separate sections of containment.

680 Cable routes
1. Cables generally: Conceal wherever possible
    1.1. Concealed cable runs to wall switches and outlets: Align vertically or horizontally with the accessory.
2. Exposed cable runs: None.
    2.1. Orientation: Straight, vertical and/ or horizontal and parallel to walls.
3. Distance from other services running parallel: 150 mm minimum
    3.1. Heating pipes: Position cables below existing heating pipes along nave wall

685 Installing cables
1. General: Install cables neatly and securely. Protect against accidental damage, adverse environmental conditions, mechanical stress and deleterious substances.
2. Timing: Do not start internal cabling until building enclosure provides permanently dry conditions
3. Jointing: At equipment and terminal fittings only.
4. Cables surrounded or covered by thermal insulation: Derate accordingly
5. Cable guards: Fit where cables are vulnerable to mechanical damage

690 Installing cables in plaster
1. Protection: Cover with galvanized steel cable capping nailed to substrate

705 Installing armoured cable
1. Temperature: Do not start installation if cable or ambient temperature is below 0°C, or has been below 0°C during the previous 24 hours.
2. Joints and terminations:
3. Earthing:
4. Connections to apparatus:

710 Installing PVC-sheathed cable
1. Temperature: Do not install cables if ambient temperature is below 5°C.

715 Installing MICC cable
1. Bending: Do not corrugate sheath.
2. Sealing cable ends: Fit terminations as soon after cable installation as practicable. Temporarily seal open cable ends to prevent the ingress of moisture where terminations are not fitted immediately.
3. Testing:
4. Terminations: To BS EN 60702-2.
5. Connection to equipment and boxes:

720 Installing electrical accessories and equipment
1. Location: As drawing proposals
2. Arrangement: Coordinate with other wall- or ceiling-mounted equipment.
3. Positioning: Accurately and square to vertical and horizontal axes.
4. Alignment: Align adjacent accessories on the same vertical or horizontal axis.
5. Mounting: Surface
6. Mounting heights (finished floor level to underside of equipment/ accessory): ???
7. Accessory face plates: Free from any traces of plaster, grout and paint or similar.

725 Final connections
1. Size:
2. Cable:
3. Length:

730 Installing multigang switches
1. General:
2. Segregation:

735 Installing luminaires
1. Location:
2. Orientation:
3. Supports: Adequate for weight of luminaire.

760 Equipment labelling
1. Electrical equipment: Install labels indicating purpose.
2. Voltage warning notices
    2.1. Location: Apply to equipment in a position where it can be seen prior to gaining access to live parts when the voltage within exceeds 230 V.
    2.2. Format: To BS EN ISO 7010, functional reference number, W012, includes warnings of the voltage present.
3. Distribution boards: Card circuit chart within a reusable clear plastic cover. Fit to the inside of each unit. Include typed information identifying the outgoing circuit references, their device rating, cable type, size, circuit location and details. Label each outgoing way corresponding to the circuit chart
4. Sub-main cables: Label at both ends with circuit reference using proprietary cable marker sleeves


810 Final fix
1. Accessory faceplates, luminaires and other equipment: Fit after completion of building painting

820 Cleaning
1. Electrical equipment: Clean immediately before handover
2. Equipment not supplied but installed under the electrical works: Clean immediately before handover

830 Inspection and testing generally
1. Standard: In accordance with BS 7671.
2. Notice before commencing tests (minimum): 24 hours
3. Labels and signs: Fix securely before system is tested
4. Certificates: Submit
    4.1. Number of copies: 2

880 Documentation
1. Timing:
2. Contents:

886 Spares
1. Type:

890 Maintenance
1. Servicing and maintenance:
1.1. Duration:

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