As the unit of daily precipitation in ipcc data base is kg m2 s i e equivalent to mm s i found that we desire to multiply the value by 24 60 60 to get the total rainfall in mm per day.
Roof mass kg m2.
Sheeting material shall be protected steel sheet to australian standard as1397 with a minimum yield stress of 550mpa grade g550 and an am100 az150 coating with or without an oven baked paint.
Steel sheet roofing 0 75mm thick battens graded purlins and high density fibreboard ceiling lining 40kg m2.
0 80 mm steel sheet.
Copper asphalt composite shingle 4 2 lb m ft 2 20 5 kg m 2 asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 felt tar and gravel roofing 3 ply 4 8 lb m ft 2 23 4 kg m 2 felt tar and gravel roofing 4 ply 5 3 lb m ft 2 25 9 kg m 2 felt tar and gravel roofing 5 ply 6 1 lb m ft 2 29 8 kg m 2 felt tar and slag roofing 3.
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Steel sheet roofing 75mm thick 13mm plaster ceiling roof and ceiling battens sarking and lightweight insulation 30kg m2.
Sheeting mass kg m2 of roof area thickness bmt grade zincalume colorbond galvanised 0 42mm 550mpa 4 28 4 35 4 65 0 48mm 550mpa 4 86 4 93 5 23 0 60mm 300mpa 6 02 6 09 6 39 adverse conditions stramit corrugated cladding will give excellent durability in almost all locations.
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Enter your estimated square metres or lineal metres for purlins.
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Then on to terracotta tiles etc etc.
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