Green Roof Saturated Weight

When saturated with water in the summertime when the plants are at their biggest and heaviest the mats weigh 40 45kg m2.

Green roof saturated weight.

The venny green roof melbourne. Photo by andrew wutke. Cuttings for plant material weight. Intensive green roofs are essentially roof gardens and may also need to allow for the additional weight of paving and terracing furniture and even trees.

Weight of standard sedum roof a standard sedum roof has a saturated weight of about 80 kg m. 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. Think about the saturated weight this way. The green roof solution uses a unique lightweight growing media rather than soil and as a result is less than 8 cm thick and six times lighter than traditional systems weighing only 20 kg m2 dry or 65 kg m2 saturated.

You may have to allow this to percolate into all of the voids. A flat roof built using the enviromat green roof system will weigh the following. If necessary this weight can be reduced to approximately 40 kg m for roofs that can only bear a lightweight green roof system. 4 625 media depth 15 20 lbs ft2 25 30 lbs ft2.

An interesting example of an intensive green roof is manaton the award winning private house on dartmoor that uses local meadow grass to blend the family home into the landscape. Pre grown trays extensive growing media. Layered system extensive growing media. Weight vegetative roof weights can range from 16 to 60 pounds per square foot depending on the depth of the growth medium types of plantings and accumulated weight of other additions such as pavers or water features.

Fill a cup with green roof growing media lightly compressing it simulating installed conditions. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. Always ask a manufacturer or installer to provide you with the maximum saturated weight of the total green roof system. 8 media depth 25 33 lbs ft2 44 52 lbs ft2.

In addition the weight also depends on the water buffering capacity of the drainage layer. That is your starting point. System depth dry weight saturated weight.