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A bag of Quickcrete weighs 80 lbs dry. When water is added it can weigh another 1.5 to 2 lbs. when the water evaporates it will sill retain some water; so, about 80.5 lbs. The Quickcrete covers 1/2 cu ft. or 2 sq. ft. @ 3" thick. 21X20= 420 sq ft X 40.25= 16,905 lbs. or there abouts.
What else can I help you with?
How many yards of concrete to make a 20' x 20' slab?
about 5 yards if your slab is 4" deep
How much weight can a square of concrete 1 meter on a side and 20 cm thick hold?
There are too many variables that are not quantified in the question to answer this. What kind of concrete? (There are different kinds.) Is the concrete reinforced? How is the square of concrete supported? What is the nature of the load and how is it distributed on the slab? We could go on.
How much does a 20x20x15' concrete column weigh if concrete used is 125 lbsft3?
20" = 1.666666667' 1.666666667 X 1.666666667 X 15 = 41.66666667^3 41.66666667^3 X 125lbs = 5,208.333334 lbs I an assuming that the 20 is in inchs and not feet. If the 20 is feet, than it would be 20 X 20 x 15 x 125.
How much of the strength of concrete comes from post production curing?
20%
How much rebar for a concrete slab 12' x 24'?
To determine the amount of rebar needed for a concrete slab measuring 12' x 24', you'll typically use #4 rebar (1/2 inch diameter) spaced 16 inches on center. For this size slab, you would need approximately 5 pieces of rebar running the 12-foot width and about 15 pieces running the 24-foot length, resulting in a total of around 20 pieces. Each piece should be cut to the corresponding dimensions, considering overlaps and any necessary splicing. Always consult local building codes and a structural engineer for precise requirements.
How many yards of concrete to make a 20' x 20' slab?
about 5 yards if your slab is 4" deep
How many yards of concrete will you need to do a 20x20x4 slab?
how many yards of concrete will i need to do a 20 x20 x4 slab
How much does a concrete slab 20' x 20' 3 thick?
Your question is missing a verb. Do you want it's weight? It's cost? Something else?
How much do paving slabs weigh approximately?
A standard paving slab will weigh approximately 70KG, which is about 154 pounds. Of course, it varies in weight according to the actual size of the slab, but that is what the average standard slab will weigh.
How much concrete for a slab 12 ft By 20 ft 4 inches thick?
To calculate the volume of concrete needed for a slab that is 12 feet by 20 feet and 4 inches thick, first convert the thickness to feet: 4 inches is equal to 1/3 foot. The volume in cubic feet is then calculated as follows: 12 ft × 20 ft × (1/3 ft) = 80 cubic feet. Therefore, you will need 80 cubic feet of concrete for the slab.
How many bags of concrete to pour a 4 inch slab 8' x 10'?
20
How many yards of concrete to pour a 20 ft by 20 ft slab 4inches thick?
4.938 cubic yards.
How much weight can a square of concrete 1 meter on a side and 20 cm thick hold?
There are too many variables that are not quantified in the question to answer this. What kind of concrete? (There are different kinds.) Is the concrete reinforced? How is the square of concrete supported? What is the nature of the load and how is it distributed on the slab? We could go on.
How man yards of concrete do you need for a 9x20?
For a 9' x 20' by 4" slab you will need 2.22 cubic yards.
How many yards of concrete for slab that is 20'x60'x4''?
14.8 cubic yards will work but round to 15 to be sure.
How much does two gallons of concrete weigh?
Nothing. Concrete doesn't come in gallons for measuring. Milk is in gallons.
How much does a 20x20x15' concrete column weigh if concrete used is 125 lbsft3?
20" = 1.666666667' 1.666666667 X 1.666666667 X 15 = 41.66666667^3 41.66666667^3 X 125lbs = 5,208.333334 lbs I an assuming that the 20 is in inchs and not feet. If the 20 is feet, than it would be 20 X 20 x 15 x 125.
