Green Roof Sizing

Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure.

Green roof sizing.

The first step in a free roofing estimate is measuring the roof dimensions. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. Measure along the length of the house or building and along the width of the house or building in feet. United states department of transportation headquarters washington dc.

Square foot 18lbs x 10 763 193lbs metre square 87 3kg ms 0 85kn m2. The venny green roof melbourne. Feet of real estate an estimated 5 9 million square feet. Step 1 determine the footprint of your structure f in square feet.

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. Photo by andrew wutke. The green roof energy calculator is an online tool that allows users to compare the annual energy performance of a building with a vegetative green roof to the same building with either a dark roof or a white roof. We list our calcs and possibly someone can confirm them.

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. Count the number of downspouts coming from your roof. Divide 100 by the number of downspouts in order to obtain the percentage of water collected from each downspout.

You will need to express this size in terms of square feet.