Green Roof Loading

What is the impact of green roof weight on building structure.

Green roof loading.

Structural loads weight of green rooftops. 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. Saturated with water the weight can increase by as much as 35 to around 100 to 110 pounds per cubic foot. In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing.

Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although. One cubic foot of dry agricultural dirt or loam typically used for a green roof weighs between 75 and 81 pounds. Types of green roofs. In older buildings or new build this may require costly structural reinforcement which in some cases may prove prohibitively expensive.

Here s a summary of the different types of green roof available. Extensive green roofs are designed to reap the benefit that green roofs offer at minimal cost and with very little maintenance. 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. A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems.

Load limits on the roof of a building.