what is the weight of a cubic foot of concrete?
813260
That depends greatly upon the mix design (what the concrete is made out of). Mix designs can put concrete anywhere from 50 lbs/CF (using very light weight rocks and other items), to over 200 lbs per CF.\n\nGenerally, most of your everyday concrete (3000 psi, Type II cement, run of the mill stuff) is about 150 lbs/CF, give or take a couple of pounds.
543775
No.  Take 15 time twelve to convert the sides into inches. that gives you 180 inches per side.  Multiply 180 time 180 to come up with  32400 square inches.  Then take taht time 4 to come up with 129600 cubic inches.  Divide that by 1728 to come up with 75 cubic feet.
759987
Do what they do at concrete batching plants. Get out your bucket wheelbarrow and shovel.\nTrial and error on small batches as the properties of the materials can vary from place to place. Strength also requires greater input of cement and hence more cost.\nSuggest you go to the local concrete batching plant and ask for an indicative mix for 20, 25, 32MPa strength concrete.\nGood luck.
109796
here you go\nhttp://www.metric-conversions.org/volume/liters-to-cubic-inches.htm
743532
.  Concrete is much stronger against compression than it is against tension.  When concrete is bent, the tension on one side will increase, while the compression on the opposite side increases.  The concrete will fail when the tension reaches a few hundred pounds per square inch.  It will not fail in compression until it reaches 3000 to 4000 or more pounds per square inch.\n.  Post tensioned cables, installed in the concrete before placing the concrete and pulled to high tension after the concrete has hardened, put the whole piece of concrete in compression. Lets call this pre-compression compression on one side, and negative tension on the other side of the concrete. When this concrete is bent, tension will not develop in the side which would normally go into tension until the negative tension placed on it is overcome by the bending force (called the bending moment) increasing the tension on that side to a positive value.  So more bending moment can be applied to the concrete before it starts to crack.
912407
1 kq m = 2.2046*3.2808 foot pounds = 7.23285 ft lb
10691
The weight per cubic foot is basically the density.\n\nThe density of glass varies with each type and ranges from 2000 to 8000 kg/m3 (for comparison, from less dense than aluminum to more dense than iron) at standard conditions. Flint glass can be so much denser than crown glass because flint glass contains lead, which is a very dense element.
917775
Do you mean mass or weight?\n\nTo get the mass of 1 cubic meter of water:\n\nA cubic meter is a cube 1m x 1m x 1m \n\nConvert to centimeters this gives 100cm x 100 cm x 100cm\n\nTherefore the volumen of the cube in cubic cm is 1000000 cm3\n\n1 litre = 1000 cm3 therfore :\nvolume in litres is 1000000 / 1000 = 1000 l\n\nrelative density of water is 1kg / l therefore the mass of the water is 1000kg or 1 tonne.\n\nWeight is the gravitational force exerceted on the water by the earths gravitational pull. I'm assuming the water is stationary at ground level and not in orbit or something daft. The effect of gravity at ground level is given by the constant g which is 9.8N/kg.\n\nTherefore the weight of the water is 1000 * 9.8 =  9800N
223066
foot pounds, 1 foot pound is the amount of force it takes to move a mass of 1 pound a distance of one foot. A newton is the equivalent measure in the metrc system.
320176
You know that you waste 15 points on this question, seeing that you have to spend only 5.\n\nThe answer is 2.540106951871 cubic ft.
433287
An eight foot railroad tie will weigh between 140 and 170 lbs. Sometimes even more if it has absorbed a large amount of creosote.
452629
The weight of steel you can find through density and volume.The density /specific weight of steel C 35 --0.0784 N/cc.\n\nCalculate the volume of the steel component and then multiply it with the density given above. Remember to take care of unit you are following.
710153
Usually psi (pounds per square inch).\n\nAloha
895472
Let's see, volume = length x width x height, so:\n\n80 ft x 12 ft x 1/2 ft = 960 x 1/2 = 480 cubic feet\n\nSince 3 feet = 1 yard, 1 cubic yard of concrete = 27 cubic feet, so:\n\n480/27 = 17.78 cubic yards is your answer\n\nFinding the surface area of the driveway is the same as finding the area of a rectangle, so:\n\nArea = length x width, so 80 ft x 12 ft = 960 square feet
1066290
First, you need the volume. The formula yields: V = pi rh/3 = 20000pi/3 cubic feet. Since it weighs 50 pounds per cubic foot, the ratio 50 lbs/ft.^3 = 1. So multiplying this to our volume equation, V = 20000pi/3 ft.^3 = 20000pi/3 ft.^3 * 50lbs/ft.^3 = 100000pi/3 lbs. The work function is (25-x)100000pi/3 = W(x). Integrate this result from x=0 to x=25, and you get the answer.
255550
You can't convert volume (cubic centimeters) to mass (pounds) unless you know a value for density. \n\n5800 cc equals 6.12 US quarts or 12.25 US pints, or 353.9 cubic inches.
179298
#6 vertical bars @ 12 in centers with 90 degree bends top and bottom, #8 lap bars horizontal full length and a total thickness of 12 inches. 3000 to 4000 psi concrete with crushed rock and a water cement ratio of under .45 should do the trick.