Green Roof Weight Per M2

Photo by andrew wutke.

Green roof weight per m2. Weight of standard sedum roof. 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. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. If necessary this weight can be reduced to approximately 40 kg m for roofs that can only bear a lightweight green roof system.

In addition the weight also depends on the water buffering capacity of the drainage layer. The company s website lists weights from about 18 psf to a little over 45 50 psf or so. The type of green roof in question is engineered to be light and doesn t have typical soil with plants see link above. Miscellaneous components in addition to other roof components.

As1170 1 2002 ta2 92kg m2 per 100mm. Sometimes you can find them specified with a dry weight and wet weight. 12 mm hardwood t g lining. The solution is simple.

A traditional green roof can exert a load of up to 250 kg per m2 and that inevitably means a strong building is required to support the weight. A standard sedum roof has a saturated weight of about 80 kg m. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. Weight kg m 2 code.

Intensive green roofs are essentially roof gardens and may also need to allow for the additional weight of paving and terracing furniture and even trees. The venny green roof melbourne. The thicker the substrate layer the greater the weight of the total roof structure. In older buildings or new build this may require costly structural reinforcement which in some cases may prove prohibitively expensive.

Roughly speaking extensive green roofs have a substrate thickness of between 4 and 15 cm and a weight of 30 to 220 kilo per m2. 12 mm softwood t g lining. The venny green roof has shallow substrates on two types of roof the first roof is on shipping containers and is designed for a dead load of 250kg m 2 and live load of 100kg m 2. An interesting example of an intensive green roof is manaton the award winning private house on dartmoor that uses local meadow grass to blend the family home into the landscape.

When sedum vegetation is applied to a green roof the weight is approximately 30 kg m2. Holds up to 9 litres of water per square metre so saturated weight is 9kg m2. The weight of roofing constructions above the truss rafter may be estimated with the calculator below. As1170 1 2002 ta2 92kg m2 per 100mm.