Living Roof Loads

In my region on cape cod we have a ground snow load design of 25 psf which is a greater design load than the live load 12 psf to 20 psf over an entire roof system.

Living roof loads.

This online guide is designed to meet the needs of diy enthusiasts looking to put a green roof on a shed or outhouse builders and landscaper contractors who want to build green roofs. Make a normal flat or sloped roof into a beautiful living garden. This is all of the natural stresses imposed upon a roof such as snow loads rain loads and wind loads. Where snow isn t a problem the.

I liked the idea of having a bit more greenery in the property we live in central london 2. This website based guide builds on the material and information in our original pdf the diy guide to green living roofs which we published in 2008. Loads include those from human occupants furnishings nonfixed equipment storage and construction and maintenance activities. While redeveloping our house we decided to install a living roof on our kitchen roof why you ask.

The dead load on a roof is the weight of the roof structure itself along with any permanently attached. Loads used in design load equations are given letters by type. 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. Determine the transient load of the roof.

D dead load l live load l. The north zone middle zone and the south zone are identified on the roof load zone map above. Roof loads are a downward vertical force on the home. Roof load live load design is affected by the shape of the roof whether it is flat curved or pitched.

Table 3 4 provides recommended design live loads for residential buildings. Live loads are produced by the use and occupancy of a building. This is highly regional as weights of snow for example range from 10 to 300 pounds per square foot based on moisture and volume of the snow. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2.

We wanted somewhere for some wildlife to have bees etc 3. This downward imposed load on the home is also known as the snow load. The live load on a roof is the weight of any temporary objects on the roof. Photo by andrew wutke.

Load limits on the roof of a building dead loads.