Green Roof Dead Load

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Green roof dead load. On the pages below we show a summary of our product range. Water in excess of that which saturates the growth media snow and people visiting the green roof are all considered part of the live load of the structure. The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings. 1 vegetation the selection of green roof plants is the purview of the landscape architect.

Material specifications structural loads and water handling. And while the benefits and maintenance of these living roofs is the subject of much discussion the successful construction of these systems requires attention to several factors. Astm e2397 is the established standard procedure for determining the dead and live loads associated with green roof systems. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2.

Roof plants are selected based on their hardiness. The use of reliable and established products that comply with green roofing guidelines is important. Plant selection is the purview of the landscape architect. The entire green roof assembly including plants and the water required to saturate the growth media is considered part of the dead load of the structure.

The long term performance of green roofs depends on many factors. Appendix a provides additional design dead loads for various green roof types and plants. Dead loads 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. 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.

Photo by andrew wutke. 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. Variations from the design weight can lead to structural failure. 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.

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