Weights of green roofs
Brooklyn NY brownstones are not built to carry heavy loads on their roofs. So when you install a green roof you need to build for it and know what the weights are. Here are the numbers from my friend Avra: Extensive – 10-50 lb/squ. ft Semi-intensive 30-90lb/sq. ft. Intensive 80-150 lb/sq. ft. Here are thicknesses […]
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