Weight Of Ballasted Roof

Ballasted roof dead load jike structural 19 jun 14 22 09.

Weight of ballasted roof.

It can also be a bit challenging to find a leak with a ballasted roof system and because the stones tend to collect a lot of dirt patching it can be a bit difficult. Other interlocking ballast pavers are available as well. After combining the weight of components i e. Gravel in form of round smooth river washed aggregate without broken pieces nominal 16 to 32 mm.

Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed. None asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 asphalt shingle or asphalt fiberglass composite shingle 2 7 lb m ft 2 13 2 kg m 2. Epdm roof membrane 60 mil fully adhered. A loose ballasted roof where you have 1 to 2 inches of gravel is more on the order of 12 psf.

Epdm roof membrane 60 mil ballasted membrane and stone ballast only 10 75 20 lbs. In the case of ballasted roofs ballast will consist of rounded gravel 20 40 mm diameter at a minimum rate of 80 kg per square metre and 50 mm thickness or pre cast hydraulically pressed concrete pavers of 50 mm minimum thickness and approximately 120kg m2. Roof perimeters and penetrations are flashed in accordance with firestone specifications pdf. Lightweight interlocking pavers with integral cementitious coating the panels shall be interlocking and weigh a minimum of 4 0 psf.

Check out eng tips forum s policies here. Insulation membrane fasteners and adhesive typical installation weight is less than 2 pounds per square foot 10 kg per square meter when 060 thick membrane typically weighing 1 3 pound per square foot or 1 6 kg per square meter is utilized. Weight of roofing materials. The weight of roofing constructions above the truss rafter may be estimated with the calculator below.

Drawbacks of a ballasted roof system adds a lot of weight to the roof system typically 10 15 pounds per square feet. Multi story buildings and perimeters will often require more than 10 psf ballast for. Previous all faqs next. 1075 2000 lbs.

Once completed the epdm membrane is held in place using one of the following materials as ballast with a minimum weight of 50 kg m. Last updated july 22 2020. The single ply membrane and other roof components including thermal insulation are loose laid. Roofs with pavers as ballast can be used as outdoor patios.

Slope design shall not exceed 2 inches in 12 inches. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2. 52 5 97 65 kg.