Green Roof Design Loads

Extensive modular green roofs.

Green roof design loads. Minimum uniformly distributed live loads adapted from sei asce 7 10. The criteria is to have a depth of drainage layer deep enough to hold the landscape above any residual standing water that occurs on the surface of the deck either by design or circumstance. Functional or extensive vegetative green roofs are well suited to roofs with little load bearing capacity. Types of green roofs.

Green roofing and construction a green roof is a green space that is created by adding various layers of plants and a growing medium to the top portion of a traditional roofing system. 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. Where added loading is required the 6 inch or 8 inch depths can be designed as functional vegetative green roofs. The addition of materials over the roofing waterproofing membrane system associated with vegetative roof systems usually increases the dead load in varying amounts based on the number composition and thickness of the layers.

0 9d 1 0e effect or 0 9 when resisting the load when permanent. Typically the least expensive vegetative green roof application. The green roof dead load is independent of other dead. Green roof dead loads result from normal variations in material thickness and density from variation in the finished growth medium product from human error in the distribution and grading of the growth medium and from variations in plant biomass.

Extensive green roofs are designed to reap the benefit that green roofs offer at minimal cost and with very little maintenance. Creating falls on a green roof. 1 2d 1 0e l 0 2s when h loads are present they shall have 6. 0 9d 1 0w a load factor of 1 6 when adding to load 7.

Applicable to the greengrid 4 inch depth. Minimum design loads for buildings and other structures location uniform load psf. Green roofs or rooftop solar panels add additional load to a roof and its support system. The need for stability of the system is increased because the negative pressure forces that can develop during intensive green roofs can be safely installed on horizontal decks whereas with extensive green roofs minimum falls of 1 60 and above are preferred.

The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. Here s a summary of the different types of green roof available. The basic requirement for a green roof is waterproof construction and efficient load bearing capacity.