the difference between a political and a physical boundary is that a physical map shows geographical features like mountains and rivers while a political map shows boundaries.
Standard Weight. Standard asphalt shingles generally weigh about 190 pounds per 100 square feet, based on information from U.S. Inspect, a property inspection company. The weight of asphalt is especially important if you want to install a new layer of asphalt roofing over an existing layer.A roof measuring 1,600 square feet that has two layers of standard asphalt shingles on it is holding about 6,000 pounds of shingles..S. Inspect indicates that dimensional shingles can be 50 percent heavier than standard asphalt roofing. Therefore, they could weigh about 285 pounds per 100 square feet. Heavier shingles reduce the chance the underlayment will wrinkle, according to the National Roofing Contractors Association.
Concrete & Asphalt Weight Calculator Can also be used for brick, dirt, gravel, etc. How much does a yard of concrete or asphalt weigh? Concrete and asphalt weights are based on the square footage and thickness of the material. On average, a cubic yard of concrete weighs 4,050 pounds, or 150 pounds per cubic foot. Asphalt weighs slightly less at 3,960 pounds per cubic yard. When disposing of either material, use our concrete weight calculator to determine the right dumpster for asphalt and concrete disposal.