THERMAL PERFORMANCE OF SUN LOUNGE
line with doors
a
a
b
b
b
line with doors
b
a
a
a
a
a
b
b
b
Sun Lounge to have:
b
a
a. Thermal separation from the heated area and the existing dwelling. Walls, doors
and windows between the dwelling and extension should be insulated and
draught-proofed to at least the same extent as the existing dwelling.
a
b. Independent temperature and controls to the heating system.
c. Glazed elements should comply with L1B Table 1 and other thermal elements
should have U-values no worse than L1B Table 2.
beam 2
glazed area
100x100mm
SHS
GENERAL
All workmanship and materials to comply with Building Regulations & British
Standards.
All materials to be fixed, applied or mixed in accordance with manufacturers
instructions or specifications. All materials shall be suitable for their purpose.
beam 4
[ horizontal ]
100x100mm
SHS
beam 5
[ raking ]
beam 3
[ horizontal ]
100x100mm
SHS
50x125mm C16 rafters
@ 600mm ctrs
beam 1
glazed area
Dimensions shown to face of brick/block, and finished face of timber partitions.
Structure to be tied in accordance with Building Regulations part A1 + A2.
Elements of structure to be protected to achieve 30 minutes fire resistance.
No work to proceed prior to approval of structural calculations.
rwg
rwg
DECORATIVE TIMBER FRAMING DETAIL
Structural and joinery timber to be preservative treated.
All structural timber to be marked Dry or KD. Do not treat in any way that will
re-introduce moisture.
1:20
[ to match existing ]
FOUNDATIONS
PROPOSED ROOF STRUCTURE
1:50
Minimum 600x200mm thick concrete strip foundations, min 1000mm deep to suit
conditions. Final width and depth to be determined on site by the BCO. Foundations
to be taken down to level below invert of any adjacent drainage. Refer to structural
engineer’s drawings for details of foundations adjacent to tree.
DINING
existing
Zinc standing seam finish, PE film & roofing
membrane to Zinc manufacturer’s
recommendations, 120mm Kingspan Thermaroof
TR27 insulation, 19mm thick WBP plywood deck,
50x125mm C16 rafters at 600mm max ctrs, 12.5mm
thick foil backed plasterboard soffit.
existing
BRICK/BLOCK WALLING
LOUNGE
Foundation grade block work/common brick below ground level. 4 courses min
concrete commons below DPC to outer leaf of external walls. Polyethylene DPC,
minimum 150mm above adjoining ground level and continuous with DPM. Cavity to
terminate at least 225mm below the level of the lowest damp-proof course.
100mm blockwork outer leaf, 100mm thick cavity filled with Rockwool CWB full fill
cavity wall batts, 100mm Aircrete 600Kg/m3 3N lightweight concrete blockwork inner
leaf. 12.5mm thick plasterboard with skim finish finish
Decorative timber framing to match existing
External render to terminate at or above dpc level with a suitable bell cast. Finish
with 2no coats Dulux Trade Weathershield Waterseal.
Total construction to achieve 0.28 w/m2K
refer to structural engineer's
details for foundations
adjacent to tree
Timber framed, double-glazed units with low
emissivity coating
BRICK/BLOCK ACCESSORIES
existing
50x150mm C16 floor
joists @ 600mm ctrs
225mm long austentic stainless steel cavity ties to B.S. 1243, DD140 or BS EN
845-1, 750mm horizontally and 450mm vertically set in diamond pattern to give 5
No. ties per m2 min. Additional ties at 300mm cts vertically adjacent to openings.
Timber flooring boards, polyethylene slipsheet,
50x150mm C16 grade floor joists at 600mm ctrs
with insulation support battens, 100mm thick
Quinn Therm QF rigid insulation, ventilated
airspace
SUN LOUNGE
KITCHEN
SUSPENDED GROUND FLOOR
WC
100mm blockwork outer leaf, 100mm thick cavity
filled with Rockwool CWB full fill cavity wall batts,
100mm Aircrete 600Kg/m3 3N lightweight
concrete blockwork inner leaf. 12.5mm thick
plasterboard with skim finish finish
remove
existing rwg
Fix strip of insulation between wall and last joist.
Cross ventilate subfloor void equivalent to 1500mm2 free ventilation per metre run of
wall and maintain existing house subfloor ventilation.
rwg
Total construction to achieve 0.22 W/m2K.
Minimum 600x200mm thick concrete strip
foundations, min 1000mm deep to suit conditions
SECTION 1-1
WARM PITCHED ROOF
EXISTING GROUND FLOOR PLAN
1:50
Timber flooring boards.
Polyethylene slipsheet
50x150mm C16 grade floor joists at 600mm ctrs with insulation support battens
100mm thick Quinn Therm QF rigid insulation.
Ventilated airspace
1:100
Zinc standing seam finish
PE film & roofing membrane to Zinc manufacturer’s recommendations
120mm Kingspan Thermaroof TR27 insulation
19mm thick WBP plywood deck.
50x125mm C16 rafters at 600mm max ctrs.
12.5mm thick foil backed plasterboard soffit.
Total construction to achieve 0.18 W/m2K
DRY LININGS
Dry lining to existing party wall: 12.5mm plasterboard with vapour barrier on
75x50mm sw timber studs at 600 ctrs. Insulate between studs with 60mm
Quinn-therm QF insulation. 50mm air gap between insulation/studs and existing wall.
Total construction to give u-value of 0.28W/m2K.
DINING
WINDOWS/ DOORS/ ROOFLIGHTS
Timber framed, double-glazed units with low emissivity coating to achieve 1.6
W/m2K, with 150mm wide DPC (to BS743).
LOUNGE
Window glazing within 800mm of floor to be in accordance with BS6206: 1981.
Window glazing within 300mm of glazed door to be in accordance with BS6206:
1981 with safety glass to a height of 1500mm. Door glazing within 1500mm of floor
to be toughened safety glass in accordance with BS6206 1981.
Trickle ventilation to give 8000mm background ventilation.
Patent glazing rooflights: Aluminium framed, double-glazed units with low emissivity
coating to achieve 1.6 W/m2K, with 150mm wide DPC (to BS743). Capping powder
coated to match zinc colour.
RAINWATER GOODS
Marley gutters (or similar) connected to existing hopper.
Install to ensure the complete discharge of rainwater from the building without
leaking. Obtain all components for each type of pipework/guttering from the same
manufacturer unless specified otherwise. Provide for thermal and building movement
when fixing and jointing, and ensure that clearances are not reduced as fixing
proceeds. Use galvanized or nonferrous fastenings, suitable for the purpose and
background, and compatible with the material being fixed or fixed to.
EXISTING REAR ELEVATION
1:100
EXISTING LEFT SIDE ELEVATION
1:100
Set out gutters to a true line to ensure no ponding or backfall. Position high points of
gutters as close as practical to the roof and low points not more than 50 mm below
the roof. Overlap joints in direction of fall and seal as specified to make watertight.
Ensure that roofing underlay is dressed into gutter.
Fix pipework securely at centres specified by manufacturer and plumb true to line
with additional supports as necessary to support pipe collars, particularly at changes
in direction. Make changes in direction of pipe runs only where shown on drawings.
Cut ends of pipes to be clean and square with burrs and swarf removed.
ELECTRICAL
All electrical works must be designed, installed, tested and commissioned by a
person competent to do so to meet the requirements of Part P.
All installations to comply with IEE regulations and all fittings to comply with British
Standards. Provide a safe, well insulated, earth protected system capable of
supplying the anticipated maximum demand. Accessories, fasteners, connectors,etc
to be types recommended for the purpose by electrical equipment manufacturer.
Avoid contact between dissimilar metals and use corrosion resistant fasteners in
locations where moisture may occur.
KITCHEN
WC
rev
PROPOSED GROUND FLOOR PLAN
1:50
PROPOSED REAR ELEVATION
1:100
PROPOSED LEFT SIDE ELEVATION
1:100
...
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collinsarchitecture
15 The Green, Caldy. CH48 2LA
0151 625 9210 07986 240214
ben@collinsarchitecture.co.uk
www.collinsarchitecture.co.uk
client
Mr & Mrs Iggo
scheme
8 Rathmore Road
dwg title
Proposed Plans & Elevations
dwg no
1214 01
size
A1
scale as shown