Unit 5 - College Farm, Keysoe, Bedford - Schedule of Work 5 - College Farm, Keysoe.pdf · Location : Lounge/Dining, Kitchen, Bedroom 1 & 2 •Concrete For Unreinforced Floor Slabs

Unit 5 - College Farm, Keysoe, Bedford - Schedule of Work08 Jun 2010

Table of Contents

Title Page

SUBSTRUCTURE0 3

SUPERSTRUCTURE1 5

FINISHES2 12

FITTINGS AND FURNISHINGS3 14

SERVICES4 16

Internal Drainage Works5 23

0 SUBSTRUCTURE

0.1 Ground Floor

10 Concrete Ground Floor on Existing Floor Drawing Reference : 293-024, 025, C32 & 044Location : Lounge/Dining, Kitchen, Bedroom 1 & 2

• Concrete For Unreinforced Floor Slabs (E10)Thickness : As drawing 293-044. Insulation : 60mm Kooltherm K3 insulated floor boards by Kingspan or similar approved insulation on levelled existing concrete floor. See also structural engineer's details for further information.Concrete : Designated GEN2.Maximum Aggregate Size : 20 mm.Coarse Recycled Concrete Aggregates : Permitted.Consistence Class :Contractor's choice.Admixtures : Concrete producer's choice.Surface Finish :Contractor's choice to suit specified covering.Surface Regularity : Maximum 5 mm gap below a 2 metre straight edge.

• Concrete Slab Perimeter Insulation (E20)Manufacturer : Kingspan or similar approved manufacturer.Product Reference : Agrément certified. Type : As underslab sheet insulation. Thickness : 25 mm.Joints : Tight butt joints.

• Floor finishManufacturer : Tile floor finish.Product Reference : Client's choice.

0.2 Wc/Wet Room

20 Floor Construction

Drawing Reference : 293-024Location :Wet Room

• Floor Construction to Wc/Wet RoomManufacturer : Purus Ltd or similar approved specialist contractor.Product Reference : Floor construction/tanking to Wc/Wet Room by specialist contractor.

• Floor finishManufacturer : Tile floor finish.Product Reference : Client's choice.

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To be carried forward to Section 0 collection (page 4)

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To be carried forward to Tender Summary (page 26)

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1 SUPERSTRUCTURE

1.1 Existing Internal Walls

1.2 General Note

30 Existing WallsDrawing Reference : 293-024 & C32Internal Walls : Principal contractor to clean brickwork where fairfaced brickwork is to be retained and makegood all walls before fixing plasterboard.

40 Existing Brick Separating Wall

Drawing Reference : 293-024 & C32Location : Bedroom 1

• Separating Wall Insulation Boards Fixed to Metal Studs & Wall (P10)Manufacturer : Gypsum or similar approved.Product Reference : Gyproc SoundBloc or similar approved.Type : Rigid board as drawing.Recycled Content : Contractor's choice.Thickness : As drawing. Fixing : 2no. layers of 12.5mm Gyproc SoundBloc fixed to Gyplyner universal metal studs fixed to wall, all mechanically fixed. 35mm cavity minimum filled with Isover APR 1200 insulation quilt.

50 Perimeter Wall Internal Finish

Drawing Reference : 293-024 & C32Location : Perimeter Wall internally to be lined with Kooltherm K18 (70mm/12.5mm) insulated rigid board or similar approved, mechanically fastened to minimum 50x38mm softwood timber battens/framing at maximum600mm centres. Uvalue of not less than 0.23W/m sq.K. Lining prepared to receive decorations. Paint colour to Employer's choice.

1.3 Roof

1.3.1 Roof Structure

60 Existing Timber TrussesDrawing Reference : 293-024, A/B30, C32 & 044Roof: : All existing trusses, purlins, wall plates and timber boarding to be inspected for disease and wood worms. Principal Contractor to apply appropriate treatment , to comply with the current building regulations.All defective timber to be removed and replaced accordingly. See Structural Engineer's drawing for additional information and details on roof construction.

1.3.2 Roof Coverings

70 Proposed Roof DetailsDrawing Reference : 293-C32 & 044Construction: : Roof to comprise of Slate to match existing on 50x25mm softwood tiling batten, on 38x19mmsoftwood counter battens, on Spirtech 250 underlay or similar approved membrane, on existing timber boarding. 100mm Kooltherm K7 Kingspan insulated rigid board or similar approved fixed between rafters.Underlay support tray cut to 150mm from pivot (see eaves detail) or similar approved. Timber fascia board tomatch existing and as indicated on the above referenced drawing.

• H71a Contractor Designed Code 4 Lead Flashing (H71A)Design Parameters : As BS 6915 and LSA Manual. Design And Detail : Lead sheet pitched roofing, guttering and flashings as drawing. Lead flashing asindicated on the drawing, design to contractor's choice.

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1.3.3 Roof Drainage

80 Replace Existing Rainwater Goods With PVCU Rainwater System

Drawing Reference : 293-024, A/B30, C32 & 044Roof : Make good walls where guttering and fascia board are removed.

• Removing Rainwater GuttersExtent : Rainwater gutters and brackets.Disposal : Remove from site for recycling.

• Removing Rainwater PipeworkExtent : External rainwater pipework, including brackets.Disposal : Remove from site for recycling.

• PVCU Gutter System (R10)Manufacturer : Alumasc rainwater goods or similar approved manufacturer. Product Reference : Agrément certified. Recycled Material : Contractor's choice.Profile : Half round.Nominal Size : 112 mm.Colour : Black.Setting Out : As manufacturer's recommendations. Brackets : Manufacturer's standard.Bracket Centres :Manufacturer's standard.Fasteners : As manufacturer's recommendations. Accessories : Stop ends, as manufacturer's recommendation.Testing : Test on completion.

• PVCU External Rainwater Pipework System (R10)Manufacturer : Alumasc or similar approved. Product Reference : Round Recycled Material : Contractor's choice.Section :Round.Nominal Size : DN 75.Finish As Delivered : Black.Jointing : Manufacturer's standard.Brackets : PVC-U clips, colour to match pipes.Bracket Centres : 1500 mm.Fasteners : As manufacturer's recommendations. Accessories : Rainwater heads, manufacturer's standard.Testing : Test on completion.

1.4 External Walls

90 External Fairfaced Brickwork

Drawing Reference : 293-024, C32, 046, 048 & 049External Brickwork : Principal Contractor to allow for making good all brickwork externally including repointing which should match existing. Bricks to be reclaimed bricks unless otherwise specified. To make good all air vents where retained and brick up to match existing where vents are to be removed, see drawings referenced above.

100 Infill External WallsDrawing Reference : 293-024, C32, 045 & 052Location : As drawing. Brickwork : Contractor to use reclaimed bricks for all fairfaced brickwork externally unless otherwisespecified.

1.5 Windows and External Doors

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1.5.1 Windows

110 Existing Window Frames

Drawing Reference : 293-024, B32, 044, 049 & 052Location : See Window Schedule for all windows and further details.

• Refurbishing Wood Window (L10)Extent : Submit report.Ironmongery : Remove and make good frames to be left in a closed position. As indicated on elevationswhere windows/stable doors are to be retained Principal Contractor to submit cost of making good door and fixed in a closed position as indicated on plans and elevations.Glazing : Remove existing glazing.Preparation : Submit report.Treatment : Submit costed proposals.Repair : Timber repair matched to existing, fixed with PVAC adhesive.

• Existing Metal Bars to WindowsRemoval : Contractor to provide cost for removal of metal bars to existing windows and making good.

120 Purpose Made External Softwood Windows

Drawing Reference : 293-024, B32, 048, 051 & 052Location : See Window Schedule drawing.Sizes : See drawing.

• Softwood Windows Purpose Made (L10)Manufacturer : As windows. Product Reference : To match existing.Type : As drawings. Sizes : As drawings. Species : Contractor's choice.Appearance Class : J10 to BS EN 942 for glazing beads, drip mouldings and the like. J40 or better for all other members.Section Sizes : As drawings. Joints :Contractor's choice.Adhesive : Thermosetting resin to BS EN 12765, class C4.Treatment :Water based microemulsion as Wood Protection Association Commodity Specification C5.Finish As Delivered : Factory applied primer and undercoat for site finishing.Weatherstripping :Contractor's choice.Fixing : Contractor's choice.

• Sealant To External Window Frames (L10)Manufacturer : Contractor's choice.Product Reference : -Type : Silicone, colour to be confirmed.Profile : As per drawings above.

• Insulating Glazing Units Bead Fixed With Solid Bedding (L40)Glass Manufacturer :Contractor's choice.Product Reference : Contractor's choice.Inner Pane : Contractor's choice.Outer Pane : Contractor's choice.Spacer : Contractor's choice.Low Permeability Inner Sealant : Contractor's choice.Vapour Permeable Outer Sealant : Contractor's choice.Beads : Window manufacturer's beads supplied loose for site fixing.Bead Location :Determined by frame profile.Bead Fixing : As window manufacturer's recommendations.

• Preparation For Staining And Varnishing New Wood (M60)Method : Fill all surface defects and abrade to a smooth even surface.

130 Proprietary Steel Lintel

Drawing Reference : 293-B32Location : As drawing. Manufacturer : Catnic or similar approved manufacturer, drawing to be confirmed and read in conjunctionwith Structural Engineer's drawings.

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1.5.2 External Door

140 Existing Door OpeningDrawing Reference : 293-024, 048 & 051Location : Front Entrance Door

• External Wood Framed Panel Doorset (L20)Manufacturer : Jeld-Wen door set or similar approved manufacturer.Type : As drawing. Doorset Size : As schedule. Door Leaf : Manufacturer's standard.Frame : Manufacturer's standard.Threshold : Manufacturer's standard sill/ mobility threshold seal.Glazing : Factory glazed, glazing to current Building Regulations.Handing : As drawing. Finish As Delivered : Factory applied basecoat stain and first topcoat for site finishing.Ironmongery : Manufacturer's standard, factory fitted.Doorset Fixing : As manufacturer's recommendations.

• Repairing Existing Wood Doors And Frames (L20)Retained Existing Doors : Make good retained existing doors and fixed in position as per drawings.Extent : Submit report on doors & frames.Preparation : Submit report on extent of timber to be removed & cost to be submitted.Treatment : Submit proposals.Repair : Timber repair matched to existing, fixed with brass screws and PVAC adhesive, class D4. All screw holes filled.

1.6 Internal Walls and Partitions

150 Remove Internal Clay Brick Solid WallDrawing Reference : 293-024Location : Lounge/Dining & Kitchen

• Removing Clay Brick Solid WallingThickness : 215 mm.Extent : As drawing. Preparation : Cut back to neat horizontal line below brickwork to be removed, make good floor and wall.Disposal : Clean and set aside whole bricks for reuse. Remove remainder from site.

160 New Timber Stud Partition With Plasterboard And Skim

Drawing Reference : 293-024 & C32Location :Wc/Wet Room, Kitchen & Linen

• Softwood Studding For Partitions (G20)Species : Contractor's choice.Size : As specified on drawing. Treatment : Not required.Stud Centres : 600 mm centres.Fixing : Framing anchors.

• Softwood Sole Plate To Stud Partition (G20)Species : Contractor's choice.Size : As studs. Treatment : Not required.Fixing : Framing anchors.Fixing Centres : 600 mm.

• Softwood Head Plate To Stud Partition (G20)Species : Contractor's choice.Size : As drawing. Treatment : Not required.Fasteners : Framing anchors.Fixing Centres : 600 mm.

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• Softwood Noggings To Stud Partitions (G20)Species : As studs. Cross Section Size : 50 x 75 mm.Locations : Where required for bracing, appliances, sheet edges and the like.Fixing : Framing anchor.

• Framing Anchors (G20)Manufacturer : Contractor's choice.Product Reference : Contractor's choiceType : To suit connection.Material : Galvanized steel.Fasteners : 30 x 3.75 mm sherardized square twist nails.

• M20a Single Layer Plasterboard Backings Nail Fixed (M20A)Manufacturer : Contractor's choice.Plasterboard :Wallboard.Thickness : 12.5 mm.Edge Profile : Tapered.Fixing : Nail fixed as manufacturer's recommendations.

• M20a Two Coat Board Finish Plaster (M20A)Manufacturer : Contractor's choice.Plaster : Two coat (undercoat plus finish) plaster system.Undercoat : Gypsum bonding plaster.Surface Preparation : Tape joints.Undercoat Thickness : 5 mm.Final Coat : Gypsum finish plaster.Final Coat Thickness : 2-3 mm applied in one coat.Finish : As manufacturer's recommendations.

• M20a Beads And Stops For Plaster (M20A)Manufacturer : Contractor's choice.Beads And Stops : Stainless steel.Position : All external angles and stop ends.

170 Ceramic Tiling Adhesive Bedded On Internal Wall

Drawing Reference : 293-024 & C32Location :Wc/Wet Room

• Preparing Wall For Tiling (M40)Initial Preparation : Purus Limited or similar approved contractor.Final Preparation : Contractor's choice.

• Ceramic Tiling On Adhesive Bed To Internal Wall (M40)Manufacturer : Employer's choice.Type : Ceramic tiles, fully vitrified, water absorption less than 0.5%.Size : 100 x 100 mm.Thickness : 6.5-7 mm.Finish : Glazed.Colour : Employer's choice.Bedding : 3 mm ribbed thin bed adhesive.Joint Width : 2 mm.

• Sealant Movement Joint To Internal Wall Tiling (M40)Manufacturer : To be agreed Type : Type A low modulus silicone.Colour : Colour to be agreed.Backing Material : Contractor's choice.Bond Breaker Tape : As recommended by sealant manufacturer. Joint Width : 6 mm.Position : At internal corners.

• Grouting To Wall Tiling (M40)Manufacturer : Employer's choice.Type : Flexible polymer modified water and frost resistant cement base grout.Colour : Pigmented - colour to be agreed.Joint Profile : To approval.

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1.7 Internal Doors

180 New Door Opening In Existing Internal Brick Solid WallDrawing Reference : 293-024 & A32Location : Bedroom 1Masonry Opening Clear Finished Size : To suit specified door and frame.Reveals : Square; make good using brickwork set aside for reuse.

• Forming Opening In Existing Solid Clay Brickwork Internal Wall (F10)Thickness : 215 mm.Preparation : Cut brickwork back to neat lines to both sides of wall before forming opening.Temporary Supports : Submit method statement detailing temporary support to structures over proposed opening during the work.Disposal : Clean and set aside whole bricks for reuse.

• Proprietary Steel Lintel (F30)Manufacturer : Catnip Steel Lintel or similar approved manufacturer.Product Reference : As schedule. Type : As schedule. Size : As schedule. Length : As schedule.

190 Internal Frames

Drawing Reference : 293-024, B32, 048 & 051Location : See drawings above.

• Internal Softwood Door Frame Purpose Made (L20)Manufacturer : Jeld-Wen door sets or similar approved manufacturer.Type : As schedule. Overall Size : As schedule. Species : Manufacturer's recommendation.Appearance Class : J10.Section Sizes : As drawing. Joints :Contractor's choice.Adhesive : Manufacturer's standard.Finish As Delivered : Factory primed for site finishing.Fixing : Screw fixing and pelleting.

• Internal Wood Moulded Purposed made Panel Flush Door Leaf (L20)Manufacturer : Jeld-Wen or similar approved Product Reference :Manufacturer's recommendation.Type : Manufacturer's standard.Sizes : As schedule. Finish As Delivered :Manufacturer's standard.

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2 FINISHES

2.1 Wall Finishes

200 Wall finishesDrawing Reference : 293-024, C32 & 044Location : See drawings for details.

2.2 Floor Finishes

210 Floor Finishes

Drawing Reference : 293-024 & 044Location : See drawings for details.

2.3 Ceiling Finishes

2.3.1 Finishes To Ceilings

220 Plasterboard Dry Lining To Ceilings

Drawing Reference : 293-C32 & 044Location : Lounge/Dining, Kitchen, Bedroom 1 & 2

• Plasterboard Ceiling Dry Lining (K10)Manufacturer : Gypsum or similar approved manufacturer.Product Reference : Gypsum plasterboard or similar approved fixed directly to rafters (sloping ceiling).Type : Standard plasterboard.Recycled Content : Contractor's choice.Layers : One.Thickness : 12.5 mm.Edge Profile : Tapered.Fixing : Dry wall screws at 230 mm (maximum) centres.Joints : Taped and filled.Finish : Prepared for plaster skim coat.

• Emulsion Painting System (M60)Manufacturer : Contractor's choice.Product Range Reference : Employer's choice.Preparation : Prepare surfaces for decoration.Initial Coats : Thinned coat emulsion.Finishing Coats : Two coats vinyl matt emulsion.Colour : Employer's choice.

• Wc/Wet Room Plasterboard Ceiling Dry Lining (K10)Manufacturer : Gypsum or similar approved.Product Reference : Contractors choice.Type : Vapour control plasterboard.Recycled Content : Contractor's choice.Layers : One.Thickness : 12.5 mm.Edge Profile : Tapered.Fixing : Dry wall screws at 230 mm (maximum) centres.Joints : Taped and filled.Finish : Surface sealant, to contractor's choice.

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3 FITTINGS AND FURNISHINGS

3.1 Fittings, Fixtures and Furniture

230 Install Domestic Kitchen UnitsDrawing Reference : 293-024Location : Kitchen

• Fitted Kitchen Unit (N11)Manufacturer : Howdens or similar approved manufacturer, units colour to be agreed.Product Reference : To be agreed.Type : Wall & high level units.Layout : As drawing. Material And Finish : Manufacturer's standard.Accessories : As drawing.

• Kitchen Unit Doors And Drawer Fronts (N11)Manufacturer : Manufacturer's Standard.Unit : Wall & high level units.Material And Finish : Manufacturer's standard.Door Hinges : Concealed.Catches :Magnetic.

• Kitchen Unit Side Panels (N11)Manufacturer : Manufacturer's Standard.Dimensions : As drawing. Material And Finish : Manufacturer's standard.

• Kitchen Unit Worktops (N11)Manufacturer : Manufacturer's Standard.Dimension : As drawing. Material And Finish : Manufacturer's standard.Supports : Manufacturer's standard end panels.Supports To Units Above Worktop :Manufacturer's standard.

• Domestic Sinks (N11)Manufacturer : Armitage Shanks or similar approved. Product Reference : Employer's choice.Type : Manufacturer's standard.Material : Stainless steel.Configuration :Manufacturer's standard.Overall Size :Manufacturer's standard.Tap Chainstay And Overflow Holes :Manufacturer's standard.Accessories : Manufacturer's standard.

• Domestic Sink Taps (N11)Manufacturer : Employer's choice.Type : Mixer tap; manufacturer Armitage Shanks or similar approved, product reference employer's choice.Material : Stainless steel.

• Domestic Sink Traps (N11)Manufacturer : Armitage Shanks or similar approved. Type : Manufacturer's standard.Material : Plastics, colour white.Size : D40

• Domestic Sink Wastes (N11)Manufacturer : Armitage Shanks or similar approved. Type : Manufacturer's standard.Material : Manufacturer's standard.Size : To fit sink

• Cooker Extract Hood (U90)Manufacturer : Greenwood Airvac or similar approved.Product Reference : Employer's choice, to meet current building regulations.Type : Manufacturer's standard.Material : Manufacturer's standard.

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4 SERVICES

4.1 Sanitary Appliances

240 Wash BasinDrawing Reference : 293-024 & A/B31

• Contractor Designed Water Supply System (S90)Design : Design and detail the water supply installation to BS 6700 or BS EN 806-2.

• Contractor Designed Above Ground Foul Drainage System (R11)Design : Complete the design of the above ground foul drainage system including selection of appropriatepreformed joints, junctions, fittings and fixings throughout. Proposals : Submit drawings, technical information, calculations and manufacturers' literature.

• Wash Basin (N13)Manufacturer : Armitage Shanks or similar approved Product Reference : Employer's choice.Type : Pedestal, vitreous china, size and colour to employer's choice.Waste :Manufacturer's standard.Trap : DN30, 75 mm seal bottle trap, chrome plated.Taps : Pair ½ inch pillar taps, chrome plated.

• Sealant For Sanitary Fittings (N13)Manufacturer : Contractor's choice.Type : High modulus one part silicone sealant, colour to match fittings.

• Copper Pipelines For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Product Reference : Kitemark certified.Size : Contractor's choice to suit system requirements.Connections To Appliances : Contractor's choice.Supports : Plastics spacers, single screw fixing.

• Flow Reducing And Servicing Valves For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Position : To water supply pipework connections to heat sources, cisterns and tanks on the hot and cold water system.Finish : Contractor's choice to match pipework.

• MUPVC Or PVCC Waste Pipework (R11)Manufacturer : Contractor's choice.Nominal Sizes :Manufacturer's standard.Colour : White where exposed to view.Brackets : Plastics pipe clips, colour to match pipes.Fasteners : As manufacturer's recommendations. Accessories : Access fittings. Testing : Test on completion.

250 WC

Drawing Reference : 293-024 & A/B31Location :Wc/Wet Room.

• Contractor Designed Water Supply System (S90)Design : Design and detail the water supply installation to BS 6700 or BS EN 806-2.

• Contractor Designed Above Ground Foul Drainage System (R11)Design : Complete the design of the above ground foul drainage system including selection of appropriatepreformed joints, junctions, fittings and fixings throughout. Proposals : Submit drawings, technical information, calculations and manufacturers' literature.

• WC Pan And Seat (N13)Manufacturer : Armitage Shanks or similar approved manufacturer. Product Reference : Employers choice.WC Pan : Back to wall, vitreous china, colour employer's choice.Flushing Arrangement : Manufacturer's standard.Seat And Cover : Employer's choice.Pan Connector : Type, contractor's choice to suit installation. Colour to be agreed with employer.

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• WC Cistern And Flushpipe (N13)Manufacturer : As WC pan. Product Reference : Employer's choice.Type : WC cistern, low level, vitreous china, colour to employer's choice. Flushpipe, colour to employerschoice.Capacity : Manufacturer's standard.Fittings : Float operated valve and plastics siphon fittings, internal overflow.Operation : Chrome plated lever handle, to be agreed.

• Sealant For Sanitary Fittings (N13)Manufacturer : Contractor's choice.Type : High modulus one part silicone sealant, colour to match fittings.


• Flow Reducing And Servicing Valves For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Position : To water supply pipework connections to heat sources, cisterns and tanks on the hot and cold water system.Finish : Contractor's choice to match pipework.

• PVCU Soil And Vent Pipework (R11)Manufacturer : Armitage Shanks or similar approved . Product Reference : Agrément certified. Coupling Type : Manufacturer's standard.Nominal Sizes :DN 110.Colour : Black.Brackets : Plastics pipe clips, colour to match pipes.Fasteners : As manufacturer's recommendations. Fastener Size : As manufacturer's recommendations. Accessories : Access fittings. Testing : Test on completion.

4.2 Water Installations

4.2.1 Mains Supply Within Building

260 Water Installation

Drawing Reference : 293-024Location : As drawing.

• Contractor Designed Water Supply System (S90)Design : Complete the design and detailing of the water supply installation to BS 6700 or BS EN 806-2.

4.2.2 Hot Water Services

270 Hot Water Supply From Heating System Boiler

Drawing Reference : 293-024 & 025

• Water Supply System (S90)Design : Complete the design and detailing of the water supply installation to BS 6700 or BS EN 806-2.


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• Pipeline Insulation For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Type : Preformed polyethylene foam, split tube.

• Flow Reducing And Servicing Valves For Hot And Cold Water System (S90)Manufacturer : Manufacturer's recommendation.Position : To water supply pipework connections to heat sources, cisterns and tanks on the hot and cold water system.Finish : Contractor's choice to match pipework.

4.3 Heat Source

280 Electrical Boiler Drawing Reference : 293-024Location : Linen Cupboard.Manufacturer : Duplex or similar approved manufacturer Type : Aqualoy 2304 or similar approved boiler.

4.4 Space Heating

4.4.1 Water Central Heating

290 Unvented Hot Water Radiator System

Drawing Reference : 293-024 & 025

• Contractor Designed Heating System (T90)Design : Complete the design and detailing of the heating installations to achieve the design parameters.

• Parameters To Contractor Designed Heating System (T90)Assumed External Air Temperature : -4°C.Basic Design Temperatures :Design the system to achieve domestic internal air temperatures set out inReference Specification.Thermal Insulation Of The Building Fabric :Assume area weighted U values given in Building Regulations (E&W) Approved Documents L1A, L1B, L2A or L2B as appropriate for building type.Design Flow Temperature : Submit proposals on which contractor's design is based.Difference Across Primary Heating Circuit :Submit proposals on which contractor's design is based.Difference Across Primary Hot Water Circuit :Submit proposals on which contractor's design is based.Water Velocity : Submit proposals on which contractor's design is based.Gravity Circulation : Gravity circulation must not occur in the heating circuit. Design the system accordingly or fit an antigravity valve.Heating System Capacity : Submit proposals on which contractor's design is based.

• Steel Panel Radiators (T90)Manufacturer : Myson or similar approved manufacturer.Type : To suit heat output requirements.Size : Calculate to provide design temperatures.Finish : Manufacturer's standard.Position : As drawing, although indicative only final positions to be agreed on site. Foil Backing : Fix reflective foil to wall behind radiator.

• Pipeline Insulation For Heating System (T90)Manufacturer : Contractor's choice.Type : Contractor's choice.Thermal Conductivity : To current building regulations.Emissivity : To current building regulations.Thickness : To BS 5422 and in accordance with 'TIMSA guidance for achieving compliance with Part L of theBuilding Regulations', table 6.1.1.

• Thermostatic Radiator Valves (T90)Manufacturer : Employer's choice.Type : Contractor's choice, to suit system requirements.Mounting : Contractor's choice, to suit system requirements.Size : Contractor's choice, to suit system requirements.Finish : Chrome plated copper alloy.

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• Testing Low Temperature Hot Water Heating System (T90)Extent : Test and balance whole heating and hot/ cold water supply systems.

• Copper Pipeline For Heating System (T90)Manufacturer : Contractor's choice.Product Reference : Kitemark certified.Nominal Size : Contractor's choice to suit system requirements.Connections To Appliances : Compression fittings.Supports : Plastics spacers, single screw fixing.

4.5 Ventilating System

300 Extract Fan In Ceiling Venting Through Pitched Roof Drawing Reference : 293-024 & 044Location :Wc/Wet RoomContractor Design : Contractor design to electrical installation, as specified.Ventilation Fan Units And Controllers : As specified. Ventilation Grilles : As drawing 293-044. Ventilation Ductwork And Accessories : Submit proposals.Electrical Cable And Accessories :Submit proposals.Electrical Testing Commissioning And Documentation : As specified.

• Ventilation Fan Unit Ceiling Mounted (U90)Manufacturer : Greenwood Airvac or similar approved manufacturer.Product Reference : CV100 or similar approved unit to meet current Building Regulations.Type : Extract fan assembly with flexible duct and external grille.Antibackdraught Shutter : Required.Adjustable Integral Overrun Timer : Required.Performance :Manufacturer's standard.Mounting : Ceiling, surface mounted.Control : Integral humidity sensor with pull-cord override.

• Ventilation Fan Controller Automatic Operation (U90)Manufacturer : As ventilation fan units. Type : Surface mounted single fan controller.Controls : Humidity sensor.

• Factory Insulated Flexible Ventilation Duct (U90)Manufacturer : Manufacturer's standard.Design : Complete the design and install ducting system including all necessary bends, junctions, adaptersetc.Type : PVC coated glass fibre with mineral fibre insulation on steel wire helix.Size : 100 mm diameter.Jointing : Manufacturer's joining pieces and worm drive clips.

• Condensation Trap To Ventilation Duct (U90)Manufacturer : Ventilation system manufacturer.Mounting Position : As manufacturer's recommendations. Drainage Outlet : Connect condensation trap through external wall with 22 mm PVC-U pipe laid to outward fall and projecting 100 mm beyond wall face.

• Inspection And Testing Of Electrical Installation (V90)Inspection And Testing Certification :Submit two copies of electrical installation certificate completed inaccordance with BS 7671.

• Documentation For Electrical Installation (V90)Contents : Full technical description.

• Commissioning Of Electrical System (V90)Requirements : Commissioning and completion testing required, beyond that described in the ReferenceSpecification

4.6 Electrical Installations

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4.6.1 Electric Source And Mains

310 Contractor Designed Electrical Power Installation

Drawing Reference : 293-024Contractor Design : Contractor design to electrical installation, as specified.Consumer Unit : Submit proposals.Cables : Submit proposals.Conduit And Trunking : Submit proposals.Accessories : Submit proposals.Electrical Testing Commissioning And Documentation : As specified.

• Contractor Designed Electrical Installation (V90)Design And Detailing Of Electrical Installation :The drawings show the outline design and layout of the maincomponents of the electrical system; complete the design in accordance with BS 7671. Also completedetailing, selection, installation and testing and commissioning of the electrical systems. Submit computer generated calculations showing types and sizes of devices, cables, and cpcs. Include rating factors, diversity,disconnection times and values of fault current and impedance.Design And Detailing Of Lighting Installation Generally : Submit layout drawings together with luminaire and lamp technical information indicating luminaire photometric data; maintenance factor calculations (showing proposals for luminaire maintenance and lamp replacement); computer generated point lighting calculations (showing calculated maintained average illuminance values and uniformity values); and isolux contour plotsfor the working plane.Design And Detailing Of Internal Lighting Installation :Design the general internal lighting installation inaccordance with CIBSE 'Code for lighting'.Design And Detailing Of External Lighting Installation :Design the external lighting installation in accordancewith CIBSE 'Code for lighting' and 'Lighting Guide 6'.Mains And Distribution : Cabling generally to be concealed. Exposed cabling or cables in concrete slabs incircular, black, heavy duty PVCU conduit.Arrangement Of Power Circuits : Separate circuits for kitchen, remainder of ground floor, cooker, immersionheater, external areas.Arrangement Of Lighting Circuits : Separate circuits for ground floor and external areas.Special Systems : Not required.Identification Of Underground Cables : To be confirmed.

• Inspection And Testing Of Electrical Installation (V90)Inspection And Testing Certification :Submit two copies of electrical installation certificate completed inaccordance with BS 7671.

• Commissioning Of Electrical System (V90)Requirements : Commissioning and completion testing required, beyond that described in the ReferenceSpecification.

• Documentation For Electrical Installation (V90)Contents : Full technical description required.

4.7 Communication Installations

320 Telephone/Broadband Installation

Drawing Reference : 293-024Location : Lounge/Dining

• Telephone & TelevisionManufacturer : Employer's choice.Product Reference : Employer's choice. All broadband and network/telecom installation to be as per approved Document Q of Building Regulations.

4.7.1 Warning Installations

330 Smoke Alarm

Location : Lounge/Dining Drawing Reference : 293-024

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• Smoke Alarm Domestic (W50)Manufacturer : Kidde or similar approved manufacturer.Location : As drawing. Type : Mains connected with battery backup to meet current Building Regulations for smoke alarms.

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5 Internal Drainage Works

5.1 Drainage

340 Plastics Pipe Domestic Foul Drainage SystemDrawing Reference : 293-A/B31Location : As drawing. General Bedding Class To Plastics Pipework :Class T - full depth granular support to 100 mm above pipecrown, single size or graded material.General Bedding Class Below Buildings :Class Y concrete surround below building when crown of pipewithin 300 mm of underside of floor slab and Class W concrete surround to 100 mm above pipe crown, singlesize material over when crown of pipe more than 300 mm from underside of floor slab.Granular Material : To BS EN 12620.Drainage Invert Levels : To work out onsite.Access Chamber Cover Levels : To work out onsite.

• Excavation (D20)Extent : To agree on site.

• Design Of Below Ground Drainage Systems (R12)Design : Complete the design and selection of junctions, bends and fittings to the below ground drainagesystem.General Arrangement : As drawing. Proposals : Submit drawings, technical information, calculations and manufacturers' literature relating to any design work carried out.

• Solid Wall PVCU Pipework For Below Ground Drainage Systems (R12)Manufacturer : Hepworth or similar approved.Product Reference : Kitemark certified.Recycled Content : Contractor's choice.Size : DN 110.Jointing : Polypropylene sleeve.

• Waste And Discharge Stack Connectors To Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Product Reference : Contractor's choice.Type : As manufacturer's recommendations.

• Bends At Base Of Soil Stacks For Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Product Reference : To be agreed.Nominal Diameter : As connected below ground drainage pipework. Type : Contractor's choice.Minimum Height Of Invert Of Horizontal Drain : 750 mm at base of stack below centreline of lowest branchpipe.

• Rodding Points For Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Type : Manufacturer's standard.Size : As drainage pipework. Bedding And Surround : Concrete (general), thickness 100 mm (minimum).

• One Piece Access Gullies And Covers For Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Product Reference : Contractor's choice.Type : Vertical back inlet access gully.Material : Manufacturer's standard.Size : Manufacturer's standard.Outlet : DN 100.Cover : Manufacturer's standard.Bedding : Concrete (general), thickness 100 mm (minimum).Surround : Granular, size 4/10, minimum thickness 150 mm (minimum).

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• Saddle Connectors For Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Product Reference : Contractor's choice.Type : Contractor's choice.Inlet Size : To suit pipe being connected.Saddle Size : Contractor's choice.

• Warning Marker Tapes For Below Ground Drainage Systems (R12)Manufacturer : Contractor's choice.Product Reference : Hepworth or similar approved.Type : Heavy gauge polyethylene.Location : To all new below ground drainage pipelines.Colour : Manufacturer's standard.Width :Manufacturer's standard.Text : Manufacturer's standard wording for each drain type.Wire Detection Aid :Required.

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Page 24

Page 23

£Collection for Section 5 Internal Drainage Works

Date

For and on behalf of

Signed

Total £

5 Internal Drainage Works (page 23)

4 SERVICES (page 16)

3 FITTINGS AND FURNISHINGS (page 14)

2 FINISHES (page 12)

1 SUPERSTRUCTURE (page 5)

0 SUBSTRUCTURE (page 3)

Preliminaries

Tender Summary £

Unit 5 - College Farm, Keysoe, Bedford - Schedule of Work