The answer will depend on 4 inch slab of what material!
That depends on the thickness of the ice. It also depends on the shape of the outline of the 1 square foot. For example ... a square with 1-ft sides can certainly support more weight than a rectangle that's 1-inch wide and 144-inches long.
12 cubic feet
a piece of yellow pine in an inside dry location can hold 1200 pounds per square inch and a 4" x 4" is really 3 1/2" X 3 1/2" or 12.25 square inches times 1200 is 16150 pounds
The 12 x 20 foot room has an area of 240 square feet, and the 15 x 15 foot room has an area of 225 square feet. That's 465 square feet of carpet. But hold the phone. Carpet is generally sold by the square yard, and a square yard is 9 square feet (as 3 feet x 3 feet is 9 square feet). The 465 square feet of floor is 51.666... or 52 square yards of carpet. It might be necessary to buy some "extra" area depending on the width of the "stock" roll of carpet from which the desired pattern/color of carpet is going to be cut.
0.212 331 gallons per foot.
A square foot of Plexiglas can hold no water. It is a flat sheet. A cube of Plexiglas would be needed.
Depends on the structural integrity of the deck.
A square foot is not going to hold any water, because it's flat. You need a cubic measurements for volume.
A square foot cannot hold water its 2 dimensional. What you see is what you get . A one cubic foot container can hold 7.48 US gallons of liquid.
as big as it needs to be to hold its weight
20,000 tons
When made out of cardboard? About ten kilos.
The amount a weight an average apartment balcony can hold will depend on the type of balcony such as wood or concrete. A balcony should support an estimated 60 pounds per square foot.
About 220 lb.
First of all it is highly unlikely to have a square foot. But if someone does have a square foot u should specify the shoe size. e.g. a size 10 US shoe will hold 132.3 pennies.
That depends on the thickness of the ice. It also depends on the shape of the outline of the 1 square foot. For example ... a square with 1-ft sides can certainly support more weight than a rectangle that's 1-inch wide and 144-inches long.
A rock over is when someone can not reach a hold so they put there foot high and put all there weight on there high foot and put of it to get to another hold