Green Roof Live Loads

An analysis of tree loading sloped roofs seismic anchorage of green roofs and recommended structural design specifications and strategies will also be presented.

Green roof live loads.

Astm e2397 is the established standard procedure for determining the dead and live loads associated with green roof systems. Saturated with water the weight can increase by as much as 35 to around 100 to 110 pounds per cubic foot. One cubic foot of dry agricultural dirt or loam typically used for a green roof weighs between 75 and 81 pounds. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2.

2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes. Structural loads weight of green rooftops. What is the impact of green roof weight on building structure. The dead load of a green roof assembly should be determined on a project specific basis because growth medium composition varies from job to job.

However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. D dead load l live load l r live roof load w wind load s snow load e earthquake load r rainwater load or ice water load t effect of material temperature h hydraulic loads from soil f hydraulic loads from fluids. In older buildings or new build this may require costly structural reinforcement which in some cases may prove prohibitively expensive. Arch 331 note set 13 1 s2014abn 2.

The live load on a roof is the weight of any temporary objects on the roof. Where snow isn t a problem the live load can come from people working on the roof and any equipment they. Building codes may vary so it is important to determine the local requirement for live loads and dead loads and to understand how the green roof being built relates to weight requirement. 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.

Lastly strategies utilizing green roofs within the context of the.