Roofing Specifications and Materials List
Roof Coverings
0.6mm Colomet finished IBR roof sheeting to a pitch not exceeding 25 degrees, fixed to timber purlins.
- 19.34
- 12.07(A)
- 2/2.30
- 2.50 (B)
- 18,836 + 2/250 = 19,336
- 9,944 + 2/800 = 11,544
- 11,544 ÷ cos 17° = 12,071
Sislation roofing insulation laid taut under roof coverings, fixed with straining wires at 400mm centers, etc.
- 2/2.50
Flashing
0.6mm Thick Colomet head wall flashing, 225mm girth.
Ditto, counter flashing to 135mm girth.
Closers
0.6mm Thick broad flute closer, suitable for IBR profile, including polyethylene closers.
- 2.35
Ridge Covering
0.6mm Thick Colomet ridge covering, 455mm girth.
Closers
0.6mm Thick broad flute closer, suitable for IBR profile, including polyethylene closers.
x 2 = ________________m
Fascia and Barge Boards
12 x 225mm Fiber cement fascia and barge boards, fixed to roof timbers at maximum 1100mm centers.
- 2/19.34
- 2/2.30
- Fascia
- 2/12.07
- 2/2.50
- Barge
Undercoat and two coats high gloss enamel paint to fiber cement fascias and barge boards.
- (12 + 225) * 2 = 474
- x 0.47 = _____________m2
0.6mm Thick narrow flute closer, suitable for IBR profile, including polyethylene closers.
Gutter System
- 19.34 (A)
76 x 100mm Galvanized steel gutter fixed slightly sloping with gutter brackets, to timber trusses at maximum 1300mm centers.
- 2/2.30 (B)
Undercoat and two coats gloss enamel paint to galvanized gutters not exceeding 300mm girth.
One coat Bitumen paint to inside of gutters, not exceeding 300mm girth.
- 2(A)
- Extra over 76 x 100mm gutter for stopped end.
- 2/2(B)
- 2(A)
- Ditto, for outlet for 76mm diameter down pipe.
- 2(B)
Down Pipes
- 2/3.20(A)
76mm Diameter galvanized rain water down pipe, fixed to wall with brackets.
- 2/3.20(B)
Undercoat and two coats high gloss enamel paint to galvanized down pipes not exceeding 300mm girth.
- Extra over 76mm diameter down pipe for eaves offset.
- 2
- 2
- Ditto, for shoes.
Rainwater Channel
Precast concrete (15Mpa / 19mm) rainwater channel left smooth from the mold, 600mm wide x 175mm high x 1000mm long with segmental channel 450mm wide x 100mm deep formed in same with one open end and one closed end (Provisional).
Roof Construction (Roof A Only)
Wall Plates
- 2/18.40
38 x 114mm Sawn SA Pine wall plates.
- 18,836 – 2/220 = 18,396
Two coats creosote to sawn timbers.
- x 0.30 = _____________m2
Design Parameters
The following parameters to be taken into consideration with the design of the roof trusses:
- The roof covering is IBR roof sheeting.
- The ceilings are mostly nailed up ceiling, with a small portion for suspended ceilings.
- Roof pitch of 17°.
- 16
Roof Trusses
Mono pitch prefabricated roof trusses, with a span of 9504m and at maximum 1300mm centers, each end with a 800mm overhang. Fixed maximum 5.9m from the ground.
4mm Diameter galvanized wire ties, 3m long with one end wrapped around trusses and the other end built into brick work for a minimum of four brick courses.
- x 2 = ___________No
Wrought end of 38 x 114mm roof trusses for a length of 837mm.
- x 2 = ___________No
- 800 ÷ Cos 17° = 837
Undercoat and two coats high gloss enamel paint to general surfaces of roof timbers.
- x 2 x 0.84 x 0.30 = _____________m2
Wrought Faces
- 14/
- 2.20
- 0.30 (At sloping ceiling)
Wrought faces to sawn timbers.
Undercoat and two coats high gloss enamel paint to general surfaces of roof timbers.
Purlins
- 9/19.34
76 x 50mm Sawn SA Pine purlins.
- 2/19.34
76 x 50mm Wrought SA Pine purlins, with one splayed cut end.
Undercoat and two coats high gloss enamel paint to general surfaces of roof timbers, not exceeding 300mm girth.
- 2/9
Wrought end of 76 x 50mm purlin for a length of 250mm.
Undercoat and two coats high gloss enamel paint to general surfaces of roof timbers, not exceeding 300mm girth.
- x 0.25 = ____________m
Bracing
- 10/2/1.50
38 x 114mm Sawn SA Pine bracing (Provisional).