Green Roof Sizing

The first step in a free roofing estimate is measuring the roof dimensions.

Green roof sizing.

Step 1 determine the footprint of your structure f in square feet. Feet of real estate an estimated 5 9 million square feet. Multiply the two figures together to obtain the square footage of your roof step 2 determine the percentage of water collected from each downspout p. Expectancy of a green roof at 40 years versus 17 for a conventional roof.

Simulations are available for new construction ashrae 90 1 2004 and old construction pre ashrae 90 1 2004 office and residential buildings driven by typical precipitation and. Photo by andrew wutke. United states department of transportation headquarters washington dc. 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.

We list our calcs and possibly someone can confirm them. Square foot 18lbs x 10 763 193lbs metre square 87 3kg ms 0 85kn m2. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. The venny green roof melbourne.

Count the number of downspouts coming from your roof. We have never done a green roof and have only briefly read up on them in the past but if your calculations are correct it would appear that you have a dead load of 0 85kn m2. In the national capital region if green roofs were to replace conventional roofs on all 54 million square. You will need to express this size in terms of square feet.

Measure along the length of the house or building and along the width of the house or building in feet.