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How many square feet does a 66000 BTU heater heat?
1500 sq ft
How many yards of mulch will it take to cover 1500 square feet 2 inches deep?
three
How much concrete is needed for 1500 sq ft 4 in thick?
18.52 cubic yards. Adjusting for safety, you should order a minimum of 19.5 cubic yards.
How many bricks will you need to build a wall 4000ft long 30 ft height blocks are 16x16x32 and weigh 970 pounds?
970 pounds EACH? I'm not buying it; the blocks would weigh 202 pounds per cubic foot and the concrete a block this big is made from only weighs 150 pounds per cubic foot. But set that aside. This isn't a question you can get a real answer to, because I need to know how the wall is shaped. If you're building a straight wall, you'll need to build supporting structures because if you just throw a wall 30 feet high up it'll fall over in the slightest wind. If you're building a wall that encloses an area, the wall would be self-supporting. Let's first calculate the number of blocks in one course. Multiply the length by 12 to get the inches, then divide by 32...or 1500. Next is the height. The same formula gives us 22.5 blocks. Unless you plan to saw 750 blocks in half, the height will be 33 blocks or 30 feet 8 inches. The total will be 49,500 blocks. And the weight is 48,015,000 pounds - not counting the mortar. That's 1200 truckloads.
What is 1455 rounded to the nearest 100?
1500
