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How many 2 cubic foot bags of mulch to cover 308 square feet 3 inches thick?
3 inches = 1/4 footVolume = (308 x 1/4) = 77 cubic feet.That's (77/2) = 38.5 bags
How many 1 cubic foot bags of mulch will you need to cover 100 yds by 2feet by 2 inches?
100 cubic foot bags.
How many yards of concrete is in a 18 foot buy 20 foot buy 3 inches thick slab?
How many square yards in a 20x18 feet 3 inches thick
How much sand is needed for an area 10 foot x 10 foot?
An area 10 foot x 10 foot is 100 square feet. 100 cubic feet of sand would cover it with a one foot deep layer of sand. If the sand needs to be 6 inches deep, then 50 cubic feet are be needed, or 25 cubic feet if the sand is to be 3 inches thick.
How many bags of cement sand and gravel to make 1 square yard of concrete?
Figure about 1/2 cubic foot per 60 lb bag. The basic formula is to use equal amounts of cement, sand, and gravel. There are 27 cubic yards per cubic foot. It depends upon how thick you are planning to pour the concrete. For one foot thick, you would need 9 cubic feet of concrete. For 6" thick, you would need 4 1/2 cubic feet. I'll give you the answers for 1 ft thick and for 6" thick. For 1 foot thick, you need 9 cubic feet at 1/2 cubic foot per 60 lb bag equals 18-60 lb bags. That's six 60 lb bags of concrete, plus six 60 lb bags of sand, plus 360 lbs of gravel. For 6 inches thick, divide each of these by 2 to give 3-60 lb bags of concrete, 3-60 lb bags of sand, plus 180 lbs of gravel.
