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Green roof dead loads.
On the pages below we show a summary of our product range.
For a modest building using 2500 sq ft.
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.
The second most common conservative assumption found in the industry is to assume that the green roof is a soil load rather than a dead load.
Add a conservative snow load allowance for flat roofs of 15 p s f and the design criteria can easily exceed 70 p s f.
Roof shall balance drainage and water retention to meet drainage requirements but retain as much rain as possible while still meeting drainage and maximum wet weight dead load requirements.
Arch 331 note set 13 1 s2014abn 2.
Green roof shall provide suitable drainage and water retention capacity to support healthy vegetation cover according to specified vegetation performance.
The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings.
Soil does not necessarily occupy the full depth of the assembly.
Green roofs typically use lightweight engineered soils with very light drainage and insulation layers.
Astm e2397 is the established standard procedure for determining the dead and live loads associated with green roof systems.
Of living roof construction this could translate to 175 000 pounds of dead load on the roof top.
3 3 dead loads dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment.
The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2.
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.
The long term performance of green roofs depends on many factors.
