Green Roof Design Tables

Intensive style green roofs are the most detailed and strongest of them all.

Green roof design tables.

Due to the increased soil depth the. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Continuing on from part 3. Let s consider a basic gable wood roof framing design.

There are three main types of green roofs which are characterized by the types of planting and vegetation that can be placed on them. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Green roof courtyard with skylights architect. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

4 1 siting and design. Implementation and maintenance of green roofs. The average cost for a bare bones green roof including the design permitting and installation will typically run between 18 and 22 per square foot. 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 trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. It contributes to the area with variable. Zeidler roberts photograph courtesy of m. The cooling effect of these cold roofs is maintained with the help of specific layer construction.

Green roof resourcesmost information on green roofs is aimed at big buildings but a few solid residential resources exist. Green roofs are also divided into different types depending on the green roof design scheme. These roofs possess low weight holding capacity so we need to design a lightweight green roof construction. First grab small green roofs.

Here the thermal insulation is installed directly above the waterproofing layer. A deeper or more specialized. Here we have a wood framed gable roof. Kuhn design guidelines for green roof 5 the growing medium is often soil based ranging in depth from 20 60 cm 8 24 with a saturated weight increase of between 290 967 7 kg m2 60 200 lbs sf.

The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.