Ty Capel 20 Preswylfa 22 26 PARK STREET / HEOL Y PARC ...

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Location PlanScale 1:1250

Licence No: 100047474

N Proposed Block PlanScale 1:500Licence No: 100047474

N

N

D01

74 Cardiff Road, CF15 7QE ǒ [email protected]

0 50 metres 0 50 metres

0 125 metres

Existing Block PlanScale 1:500Licence No: 100047474

Rev 0

LivingRoom

EntranceHall

Hall

Kitchen DiningRoom

SittingRoom

ex RWP

ex RWP

Bedroom 2

Landing

Bathroom

Bedroom 1

Bedroom 3

Landing

Cup'd

ex RWP

Bedroom 4

h=1,5m

h=1,5m

h=2,0m

h=2,0m

0 5 metres

Existing Ground Floor PlanScale 1:50

Existing First Floor PlanScale 1:50


D02 Rev 0

Existing Loft PlanScale 1:50

Existing Roof PlanScale 1:50

Existing North ElevationScale 1:50

Existing South ElevationScale 1:50

Existing West ElevationScale 1:50

Existing East ElevationScale 1:50

0 5 metres


D03 Rev 0

LivingRoom

Porch

Hall

Kitchen

DiningRoom

SittingRoom

ex RWP

ex RWP

new SVP

To ex

isting

sewe

r

FD30

Door removed

FD30

FD30

6300

11480

2670 3630

6300

31302170

3380

5800

1000

16803920

3503

3297

6480

3000

Bedroom 2

Landing

Bathroom

Bedroom 1

Bedroom 3

Landing

Utility

ex RWP

new SVP

FD30

FD30

FD30

FD30

6300

11480

3930

3780

2370

3920

3650

3150

1680

2000

5093

1680

970 2060

3130

1600

Bedroom 4

h=1,5m

h=1,5m

h=2,0m

h=2,0m

dwarf wallsas per spec.timber frame walls

to be finished withrender as per

spec.

dwarf wallsas per spec.

timber studpartition wallsas per spec.

Landing

timber studpartition wallsas per spec.

New double glazedwindow to match

existing as per spec.



h=1,0m

timber beam above sized andspecified by Structural Engineer

timber beam abovesized and specified

by StructuralEngineer

new SVP

FD30

mechanically ventilatedas per spec.

1640

2130 1240 2130

1589

1113

3900

2300

1400

1862

2647

6300

7700

5500

6700

Steel post sized andspecified by Structural

Engineer

Steel post sized andspecified by Structural

Engineer

timber framewalls to be

finished withslates as per

spec.

EnSuite

1000 4300 1000

Symbol Key:Boundary line

Rainwater drainage layout

Waste drainage layout

Details above

timber/steel beam above sized andspecified by Structural Engineer - fireproofed as per spec. and detail drawing

Parts of this project require newstructural steelwork. Client to

engage a Structural Engineer toprovide the necessary calculations

and beam sizes/connections tosatisfy Building Control Officer

requirements.0 5 metres

Proposed Ground Floor PlanScale 1:50

Proposed First Floor PlanScale 1:50


D04 Rev 0

Proposed Loft PlanScale 1:50

Proposed Roof PlanScale 1:50



timber frame wallsto be finished with

render as perspec.

New pitched roofas per spec.

1640

1640

2213



render as perspec.

2213

1727




spec.

1382

2111



render as perspec.

2213

1914




spec.

1382

2111


existing as per spec.New pitched roof

as per spec.



spec.

2111

4300

Proposed North ElevationScale 1:50

Proposed South ElevationScale 1:50

Proposed West ElevationScale 1:50

Proposed East ElevationScale 1:50

0 5 metres


D05 Rev 0

DORMER PITCHED ROOF(imposed load max 0.75 kN/m² - dead load max 0.75 kN/m²)Vented roof – pitch 22-45°To achieve U-value 0.15 W/m²KTimber roof structures to be designed by an Engineer in accordance with NHBC Technical Requirement R5Structural Design. Calculations to be based on BS EN 1995-1-1. Roofing tiles to match existing on 25 x 38mmtanalised sw treated battens on sarking felt to relevant BBA Certificate. Supported on 47 x 150mm grade C24rafters at max 400mm centres max span 3.47m. Rafters supported on 100 x 50mm sw wall plates. Insulationto be 100mm Celotex FR5000 between rafters and 60mm under rafters. Provide 12.5mm foil backedplasterboard (joints staggered) and 3mm skim coat of finishing plaster to the underside of all ceilings. Providea cavity of 25mm by fixing battens between plasterboard and under rafter insulation (recommended whereinsulation under rafters exceeds 50mm).Maintain a 50mm air gap above insulation to ventilate roof. Provide opening at eaves level at least equal tocontinuous strip 25mm wide and opening at ridge equal to continuous strip 5mm wide to promote ventilation.Restraint strapping - Ceiling joists tied to rafters (if raised collar roof consult structural engineer). 100mm x50mm wall plate strapped down to walls. Ceiling joists and rafters to be strapped to walls and gable walls,straps built into cavity, across at least 3 timbers with noggins. All straps to be 1000 x 30 x 5mm galvanizedstraps or other approved to BSEN 845-1 at 2m centres.

A continuous 5mm wide opening or the equivalent area isrequired to the length of the ridge or provide high level tile ventsas agreed with the Building Control Officer

RIDGE VENTILATION DETAIL

Structural design by suitably qualified engineer

LOFT CONVERSION BUILDING REGULATIONS NOTES

CDM REGULATIONS 2015The client must abide by the Construction Design and Management Regulations 2015. The client mustappoint a contractor, if more than one contractor is to be involved, the client will need to appoint (inwriting) a principal designer (to plan, manage and coordinate the planning and design work) and aprincipal contractor (to plan, manage and coordinate the construction and ensure there arearrangements in place for managing and organising the project).

Domestic clientsThe domestic client is to appoint a principal designer and a principal contractor when there is more thanone contractor, if not your duties will automatically transferred to the contractor or principal contractor.

The designer can take on the duties, provided there is a written agreement between you and thedesigner to do so.

The Health and Safety Executive is to be notified as soon as possible before construction work starts ifthe works:

(a) Last longer than 30 working days and has more than 20 workers working simultaneously at anypoint in the project.Or:(b) Exceeds 500 person days.

THERMAL BRIDGINGCare shall be taken to limit the occurrence of thermal bridging in the insulation layers caused by gapswithin the thermal element, (i.e. around windows and door openings). Reasonable provision shall alsobe made to ensure the dwelling is constructed to minimise unwanted air leakage through the newbuilding fabric.

HEALTH AND SAFETYThe contractor is reminded of their liability to ensure due care, attention and consideration is given inregard to safe practice in compliance with the Health and Safety at Work Act 1974.

MATERIALS AND WORKMANSHIPAll works are to be carried out in a workmanlike manner. All materials and workmanship must complywith Regulation 7 of the Building Regulations, all relevant British Standards, European Standards,Agreement Certificates, Product Certification of Schemes (Kite Marks) etc. Products conforming to aEuropean technical standard or harmonised European product should have a CE marking.

BEAMSSupply and install all structural elements such as beams, roof structure, floor structure, bearings, andpadstones in accordance with the Structural Engineer's calculations and details. New steel beams to beencased in 12.5mm Gyproc FireLine board with staggered joints, Gyproc FireCase or painted in NullifireS or similar intumescent paint to provide 1/2 hour fire resistance as agreed with Building Control. All fireprotection to be installed as detailed by specialist manufacturer.

LINTELS- For uniformly distributed loads and standard 2 storey domestic loadings onlyLintel widths are to be equal to wall thickness. All lintels over 750mm sized internal door openings to be65mm deep pre-stressed concrete plank lintels. 150mm deep lintels are to be used for 900mm sizedinternal door openings. Lintels to have a minimum bearing of 150mm on each end. All pre-stressedconcrete lintels to be designed and manufactured in accordance with BS 8110, with a concrete strengthof 50 or 40 N/mm² and incorporating steel strands to BS 5896 to support loadings assessed to BS 5977Part 1.For other structural openings provide proprietary insulated steel lintels suitable for spans and loadingsin compliance with Approved Document A and lintel manufacture standard tables. Stop ends, DPCtrays and weep holes to be provided above all externally located lintels.

STRAPPING FOR PITCHED ROOFGable walls should be strapped to roofs at 2m centres. All external walls running parallel to roof raftersto be restrained at roof level using 1000mm x 30mm x 5mm galvanised mild steel horizontal straps orother approved to BSEN 845-1 built into walls at max 2000mm centres and to be taken across minimum3 rafters and screw fixed. Provide solid noggins between rafters at strap positions. All wall plates to be100 x 50mm fixed to inner skin of cavity wall using 30mm x 5mm x 1000mm galvanized metal straps orother approved to BSEN 845-1 at maximum 2m centres.

OPENINGS AND RETURNSAn opening or recess greater than 0.1m² shall be at least 550mm from the supported wall (measuredinternally).

DPCProvide horizontal strip polymer (hyload) damp proof course to both internal and external skinsminimum 150mm above external ground level. New DPC to be made continuous with existing DPC’sand with floor DPM. Vertical DPC to be installed at all reveals where cavity is closed.

WALL TIESAll walls constructed with stainless steel vertical twist type retaining wall ties built in at 750mm ctrshorizontally, 450mm vertically and 225mm ctrs at reveals and corners in staggered rows. Wall ties to besuitable for cavity width and in accordance with BS 5628-6.1: 1996 and BS EN 845-1: 2003.

CAVITY BARRIERS30 minute fire resistant cavity barriers to be provided at at tops of walls, gable end walls and verticallyat junctions with separating walls & horizontally at separating walls with cavity tray over installedaccording to manufacturers details.

LEAD WORK AND FLASHINGSAll lead flashings, any valleys or soakers to be Code 5 lead and laid according to Lead DevelopmentAssociation. Flashings to be provided to all jambs and below window openings with welded upstands.Joints to be lapped min 150mm and lead to be dressed 200mm under tiles, etc. All work to beundertaken in accordance with the Lead Development Association recommendations.

INTERNAL STUD PARTITIONS100mm x 50mm softwood treated timbers studs at 400mm ctrs with 50 x 100mm head and sole platesand solid intermediate horizontal noggins at 1/3 height or 450mm. Provide min 10kg/m³ densityacoustic soundproof quilt tightly packed (e.g. 100mm Rockwool or Isowool mineral fibre soundinsulation) in all voids the full depth of the stud. Partitions built off doubled up joists where partitions runparallel or provide noggins where at right angles, or built off DPC on thickened concrete slab if solidground floor. Walls faced throughout with 12.5mm plaster board with skim plaster finish. Taped andjointed complete with beads and stops.

ELECTRICALAll electrical work required to meet the requirements of Part P (electrical safety) must be designed,installed, inspected and tested by a competent person registered under a competent person selfcertification scheme such as BRE certification Ltd, BSI, NICEIC Certification Services or Zurich Ltd. Anappropriate BS7671 Electrical Installation Certificate is to be issued for the work by a person competentto do so. A copy of a certificate will be given to Building Control on completion.

INTERNAL LIGHTINGInternal energy efficient light to be fitted as calculated in the DER and in compliance with the DomesticBuilding Services Compliance Guide. Provide low energy light fittings not less than three per four(excluding infrequently accessed spaces used for storage, such as cupboards and wardrobes). Lowenergy light fittings should have lamps with a luminous efficacy greater than 45 lamp lumens percircuit-watt and a total output greater than 400 lamp lumens. Fixed internal lighting to be pin basedfluorescent or compact fluorescent lamps or low energy bayonet or Edison screw base compactflorescent lamps.

HEATINGAriston Nuos Split 200 Air Source Heat Pump heating system to be designed, installed and tested byspecialist. All work to be in accordance with the Local Water Authorities bye laws.

SAFETY GLAZINGAll glazing in critical locations to be toughened or laminated safety glass to BS 6206, BS EN 14179 orBS EN ISO 12543-1:2011 and Part K (Part N in Wales) of the current building regulations. i.e. within1500mm above floor level in doors and side panels within 300mm of door opening and within 800mmabove floor level in windows.

WINDOWSWindows to be double glazed with 16mm argon gap and soft coat low-E glass. Window Energy Ratingto be Band C or better and to achieve U-value of 1.6 W/m²K.

DOORSDoors to achieve a U-Value of 1.80W/m²K. Glazed areas to be double glazed with 16mm argon gapand soft low-E glass. Glass to be toughened or laminated safety glass to BS 6206, BS EN 14179 or BSEN ISO 12543-1:2011 and Part K (Part N in Wales) of the current Building Regulations.

BACKGROUND AND PURGE VENTILATIONBackground ventilation - Controllable background ventilation via trickle vents to BS EN 13141-3 withinthe window frame to be provided to new habitable rooms at a rate of min 5000mm²; and to kitchens,bathrooms, WCs and utility rooms at a rate of 2500mm²Purge ventilation - New windows/rooflights to have openable area in excess of 1/20th of their floor area,if the window opens more than 30° or 1/10th of their floor area if the window opens less than 30°Internal doors should be provided with a 10mm gap below the door to aid air circulation.Ventilation provision to be in accordance with the Domestic Ventilation Compliance Guide.

EXTRACT FOR ENSUITEProvide mechanical extract ventilation to shower room ducted to external air capable of extracting at arate of not less than 15 litres per second. Vent to be connected to light switch and to have 15 minuteover run if no window in the room. Internal doors should be provided with a 10mm gap below the doorto aid air circulation. Ventilation provision in accordance with the Domestic Ventilation ComplianceGuide. Intermittent extract fans to BS EN 13141-4. All fixed mechanical ventilation systems, where theycan be tested and adjusted, shall be commissioned and a commissioning notice given to the BuildingControl Body.

RAINWATER DRAINAGERainwater goods to be new 110mm UPVC half round gutters taken and connected into 68mm diaUPVC downpipes. Rainwater taken to new soakaway, situated a min distance of 5.0m away from anybuilding, via 110mm dia UPVC pipes surrounded in 150mm granular fill. Soakaway to be min of 1 cubicmetre capacity (or to depth to Local Authorities approval) with suitable granular fill with geotextilesurround to prevent migration of fines. If necessary carry out a porosity test to determine design anddepth of soakaway.Paved areas to be suitably drained free from storm water.

UNDERGROUND FOUL DRAINAGEUnderground drainage to consist of 100mm diameter UPVC proprietary pipe work to give a 1:40 fall.Surround pipes in 100mm pea shingle. Provide 600mm suitable cover (900mm under drives). Shallowpipes to be covered with 100mm reinforced concrete slab over compressible material. Provide roddingaccess at all changes of direction and junctions. All below ground drainage to comply with BS EN1401-1: 2009.

SOIL AND VENT PIPESvp to be extended up in 110mm dia UPVC and to terminate min 900mm above any openings within3m. Provide a long radius bend at foot of SVP. Internal soil vent pipes to be wrapped in 25mm unfacedmineral fibre and enclosed in minimum two layers of 12.5mm plasterboard (15g/m² mass per unit area)to provide adequate sound proofing. Soil and vent passing through floors to be enclosed in ductscomprising of timber framing faced with fire line plasterboard to achieve half hour fire resistance. Allducts to be fire stopped at floor levels using mineral wool quilt packing.

PIPEWORK THROUGH WALLSWhere pipework passes through external walls form rocker joints either side wall face of max length600mm with flexible joints with short length of pipe bedded in wall.Alternatively provide 75mm deep pre-cast concrete plank lintels over drain to form opening in wall togive 50mm space all round pipe: mask opening both sides with rigid sheet material and compressiblesealant to prevent entry of fill or vermin.

BEAMS AND STRUCTUREEngineer's Structural calculations and details are to be provided for all beams, roof, lintels, joists,bearings, padstones and any other load bearing elements before works commence on site. New steelbeams to be encased in 12.5mm Gyproc FireLine board with staggered joints, Gyproc FireCase orpainted in Nullifire S or similar intumescent paint to provide 1/2 hour fire resistance as agreed withBuilding Control. All fire protection to be installed as detailed by specialist manufacturer.

EXISTING STRUCTUREExisting structure including foundations, floor, beams, walls, roof and lintels are to be exposed andchecked for adequacy prior to commencement of work and as required by the Building Control Officer.

MEANS OF ESCAPE - Fire doorsForm a protected escape stairway by providing half hour fire resistance to all partitions as well as floorsand ceilings above and below rooms. Stairway to be protected at all levels - from the loft room/roomsthen leading directly to an external door at ground level (no inner rooms allowed). All doors on to thestairway must be FD20 rated fire doors to BS 476-22:1987 (fitted with intumescent strips rebatedaround sides & top of door or frame if required by BCO). Where applicable, any glazing in fire doors tobe half hour fire resisting and glazing in the walls forming the escape route enclosure to have 30minutes fire resistance and be at least 1.1m above the floor level or stair pitch line.

NEW WINDOWSNew windows to be double glazed with 16mm argon gap and soft coat low-E glass. Window EnergyRating to be Band C or better and to achieve U-value of 1.6 W/m²K.

CONSEQUENTIAL IMPROVEMENTSThe following thermal improvements to be carried out to existing building:• If the existing property has uninsulated or partially insulated cavity walls, fill with insulationwhere suitable (may not be suitable for sites exposed to driving rain)• Ensure loft insulation is min 250mm Rockwool or equivalent• Ensure hot water cylinder is insulated with a 160mm insulated jacketWhere works increase floor area by less than 10m2 upgrade loft insulation only

ROOF DETAIL

A continuous 5mm wide opening or the

equivalent area is required to the length of the

ridge

Roofing tiles

25 x 38mm tanalised sw treated battens

Sarking felt to BS747

Cross ventilation to be provided by a

proprietary eaves ventilation strip equivalent to

a 25mm continuous gap at eaves level with

insect grill

100mm Celotex FR5000 between and 60mm

under rafters (25mm battens recommended where

insulation under rafters exceeds 50mm)

12.5mm foil backed plasterboard and 3mm skim

coat of finishing plaster

47 x 170mm grade C24 rafters at max

400mm centres span to eng details

Cross ventilation to be provided by a proprietary eaves ventilationstrip equivalent to a 25mm continuous gap at eaves level with insectgrill and 50mm air gap between felt and insulation

Ensure insulation is installed tightly between the rafters and over raftersto prevent thermal bridging

Eaves ventilator tray to ensure a 50mm ventilationgap

Ensure continuity of insulation

EAVES DETAIL FOR LOFTCONVERSION

Cross ventilation to be provided by aproprietary eaves ventilation stripequivalent to a 25mm continuous gapat eaves level with insect grill and50mm air gap between felt andinsulation

Ensure insulation is installed tightlybetween the rafters and over rafters toprevent thermal bridging

Eaves ventilator tray to ensure a 50mmventilation gap


EAVES DETAIL

Cross ventilation to be provided by aproprietary eaves ventilation stripequivalent to a 25mm continuous gapat eaves level with insect grill and50mm air gap between felt andinsulation

Ensure insulation is installed tightlybetween the rafters and over rafters toprevent thermal bridging

Eaves ventilator tray to ensure a 50mmventilation gap


EAVES DETAIL


D06 Rev 0

BEAMSSupply and install new structural elements such as new beams, roof structure, floorstructure, bearings, and padstones in accordance with the Structural Engineer's calculationsand details. New steel beams to be encased in 12.5mm Gyproc FireLine board withstaggered joints, Gyproc FireCase or painted in Nullifire S or similar intumescent paint toprovide 1/2 hour fire resistance as agreed with Building Control. All fire protection to beinstalled as detailed by specialist manufacturer.

FIRE PROTECTION OF STEEL BEAM(Knauf fire board - as section 6 :2012 of manufacturer's details)

Washbasin - provide 32mm dia trapwith 75mm water seal. Length of pipeto be 1.7 max for 32mm pipe or 3m

max for 40mm pipe

WC - provide 100mm diapipe with 50mm water

seal. Length of pipe to be6m max for single WC

Bath/shower - provide 40mm dia trapwith 50mm water seal. Length of pipe tobe 3m max for 40mm pipe 4m max for50mm pipe

Bends in branch pipes should be avoidedor have as large a radius as possible

The branch pipes should be of at leastthe same diameter as the trap

Avoid cross-flow into any other branchpipe connected to the stack by providingan offset and swept entries as detailed inADH diagram 2

A branch pipe should notdischarge into a stacklower than 450mm abovethe invert level of thedrain (3 storeys)

Provide rodding points to dischargepipes which cannot be rodded byremoving traps or appliances

Soil and vent pipes should be fixed to theexternal wall of the building using pipeclips at no more than 1.8m apart andbranch pipes by clips no more than750mm apart

Ensure a gentle bend at the base ofstack with as large a radius as possible,at least 200mm at the centre line, undera concrete support

Svp to terminate at least 900mm higherthan any opening within 3m and top ofpipe to be fitted with a cage

900 mm

Sink - provide 40mm dia trapwith 75mm water seal. Lengthof pipe to be 3m max for 40mmpipe or 4m max for 50mm pipe

It is acceptable to reduce a bath/showertrap to 38mm where the appliancedischarges directly to a gully

ABOVE GROUND DRAINAGEAll new above ground drainage and plumbing to comply with BS EN 12056-2:2000 for sanitary pipework. All drainage to be in accordance withPart H of the Building Regulations. Wastes to have 75mm deep anti vac bottle traps and rodding eyes to be provided at changes of direction.

Size of wastes pipes and max length of branch connections (if max length is exceeded then anti vacuum traps to be used)- Wash basin - 1.7m for 32mm pipe 4m for 40mm pipe- Bath/shower - 3m for 40mm pipe 4m for 50mm pipe- W/C - 6m for 100mm pipe for single WCAll branch pipes to connect to 110mm soil and vent pipe terminating min 900mm above any openings within 3m, or to 110mm upvc soil pipewith accessible internal air admittance valve complying with BS EN 12380, placed at a height so that the outlet is above the trap of the highestfitting. Waste pipes not to connect on to SVP within 200mm of the WC connection. Supply hot and cold water to all fittings as appropriate.

Less than 3m

Slope = 18mm/m min

Slope = 18mm/m min

Slope = 18mm/m min

Slope = 18mm/m min

ABOVE GROUND DRAINAGE

25 x 25mm angle fixed usingproprietary fixings at 600mm centres

Board screwed to angles at 150mmcentres with 35mm Knauf Drywall Screws

Board fixed to vertical boardsusing proprietary screws

NOTE:100mm board cut offs to befitted behind butt joints and fixedwith proprietary screws at 100mmcentres

LEAD VALLEYSLead-lined valleys to be formed using Code 5 lead sheet. Valley lead and two tiling fillets to be supported on min 19mmthick and 225mm wide marine ply valley boards on either side of the rafters. Lead to be laid in lengths not exceeding1.5m with min 150mm lap joints and be dressed 200mm under the tiles.Roofing tiles to be bedded in mortar placed on a tile slip to prevent direct contact. Valley to have a minimum 100mmwide channel (125mm minimum for pitches below 30°).All work to be in accordance with the roof cladding manufacturers and the Lead Development Associationrecommendations.

12.5mm plasterboard with vapour check

Studs infilled with 120mm Celotex FR5000

insulation and 25mm provided over studs

150 x 50mm soleplates fixed to base

150 x 50mm treated timber studs at 400mm

centres

Battens to provide 50mm vented and drained

cavity

20mm render applied to stainless steel lath

(to comply with BS 5262)

Approved breathable membrane, having a

vapour resistance of not more than 0.6 MNs/g

12mm thick marine plywood (or other approved)

TIMBER FRAMED WALL

DORMER CONSTRUCTIONTo achieve minimum U Value of 0.21W/m²KStructure to engineer's details and calculations. Render finish (to comply with BS EN 13914-1) - applied in 3 coats at least20mm thick to stainless steel render lath. Render should be finished onto an approved render stop. Render lath fixed tovertical 25 x 50mm preservative treated battens to provide vented and drained cavity, fixed to breathable membrane (havinga vapour resistance of not more than 0.6 MNs/g) and 12mm thick W.B.P external quality plywood sheathing (or otherapproved). Ply fixed to treated timber frame studs constructed using 150mm x 50mm head and sole plates and vertical studs(with noggins) at 400mm centres or to structural engineer's details and calculations. Insulation between studs to be 120mmCelotex FR5000 and 25mm over studs. Finish with 12.5mm plasterboard over vcl and 3mm skim coat of finishing plaster.All junctions to have water tight construction, seal all perimeter joints with tape internally and with silicon sealant externally.Dormer walls built off existing masonry walls to have galvanised mild steel straps placed at 900 centres. Dormer cheekswithin 1m of the boundary to be lined externally with 12.5mm Supalux and 12.5mm Gyproc FireLine board internally toachieve 1/2 hour fire resistance from both sides.

Insulation between and over studs 120mm

Celotex FR5000 between plus 25mm over

12.5mm plasterboard over cvl. Finish with

3mm plaster skim

External quality plywood sheathing- 12mm

thick marine plywood (or other approved)

Tiles hung vertically on 25mm x 38mm

preservative treated battens

Vapour control layer

TILE HUNG TIMBER FRAMED WALL

Treated timber frame constructed using

150mm x 50mm head & sole plates and

vertical studs

DORMER CONSTRUCTIONTo achieve minimum U Value of 0.21W/m²KStructure to engineer's details and calculations. Render finish (to comply with BS EN 13914-1) - applied in 3 coats at least20mm thick to stainless steel render lath. Render should be finished onto an approved render stop. Render lath fixed tovertical 25 x 50mm preservative treated battens to provide vented and drained cavity, fixed to breathable membrane (havinga vapour resistance of not more than 0.6 MNs/g) and 12mm thick W.B.P external quality plywood sheathing (or otherapproved). Ply fixed to treated timber frame studs constructed using 150mm x 50mm head and sole plates and vertical studs(with noggins) at 400mm centres or to structural engineer's details and calculations. Insulation between studs to be 120mmCelotex FR5000 and 25mm over studs. Finish with 12.5mm plasterboard over vcl and 3mm skim coat of finishing plaster.All junctions to have water tight construction, seal all perimeter joints with tape internally and with silicon sealant externally.Dormer walls built off existing masonry walls to have galvanised mild steel straps placed at 900 centres. Dormer cheekswithin 1m of the boundary to be lined externally with 12.5mm Supalux and 12.5mm Gyproc FireLine board internally toachieve 1/2 hour fire resistance from both sides.

Insulation between and over studs: 60mm

Celotex GA4000 between plus 37.5mm

Celotex PL4000 insulated plaster board

over

Finish with 3mm plaster skim

DWARF WALLS

Treated timber frame constructed using

100mm x 50mm head & sole plates and

vertical studs

DWARF WALL

To achieve minimum U Value of 0.28W/mĮK

Construct stud wall using 100mm x 50mm head and sole plates and vertical

studs (with noggins) at 400mm centres or to structural engineer's details and

calculations. Insulation between and over studs; 60mm Celotex GA4000

between plus 37.5mm Celotex PL4000 insulated plasterboard with VCL.

Finish with 3mm skim coat of finishing plaster. All junctions to have water

tight construction, seal all perimeter joints with tape internally and with silicon

sealant externally.

Gutter boards of 19mm thick

marine ply

Roofing membrane dressed over

tiling fillet. Tile to over hang filllet

by 50mm min

125mm min

Cement : sand mortar bedded along

the continuous valley width on tile

slips

Code 5 lead lined valley

VALLEY DETAIL


D07 Rev 0

Ty Capel 20 Preswylfa 22 26 PARK STREET / HEOL Y PARC ...

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