Green Roof Weight Load

There are a number of things to consider when designing for a green roof.

Green roof weight load. 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. Mid range 5 inch systems weigh approximately 34 pounds per square foot and are compatible with wood or steel decks. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. One important item to design for is an increased structural load.

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. Heavier intensive green roofs generally require a concrete supporting deck. The dead load on a roof is the weight of the roof structure itself along with any permanently attached materials or structures on the roof so it must be designed first of all to support itself. For more in depth information the astm standards e2397 and e2399 has published specific protocols for determining the weight and dead load of green.

What is the impact of green roof weight on building structure. In older buildings or new build this may require costly structural reinforcement which in some cases may prove prohibitively expensive. The simple answer is that the weight of a green roof is determined by the strength of your build or structure so there are a few things to consider when creating your own green roof.