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The answer posted below in bold is NOT correct. The edited answer is technically correct if your definition of capacity is how much water can the pipe hold. This answer is a simple cylindrical volume calculation with a conversion to gallons.
If your definition of capacity is how much water can flow through the pipe then the answer becomes much more complex. Typically these pipe capacities are given in units of cubic feet per second (cfs) or gallons per minute (gpm). To calculate this capacity you must use Manning's equation.
Q=vA=(1.49/n)*R^(2/3)*S^(0.5)*A
where Q is flow capacity in cfs, v is velocity in feet per second, A is area in square feet, n is the Manning coefficient, R is the hydraulic radius in ft (equals area divided by wetted perimeter), and S is the pipe slope in ft/ft.
If the pipe is pressurized which is the case with municipal water supply then the pipe will always flow full and R=D/4 (D is diameter in feet).
If the pipe is not pressurized which is the case with most drain lines then the hydraulic radius and area become a function of water depth in the pipe.
Refer to a Hydraulics text book for more information on any of this. Piping designs should always be calculated by a professional engineer who is trained in these types of applications and is aware of local codes and regulations.
Pi (3.14159265....) X r (radius inches)sq X L (length inches) divided by 231 = gallons of fluid.
What else can I help you with?
How many gallons of water are there in a 10 inch pipe one foot long?
There need not be any water at all in the pipe. The capacity of the pipe is approx 3.4 Imperial gallons.
How many liters of water in 1 meter of 4 inch pipe?
There need no be any water at all! The capacity of the pipe is 8.11 litres approx.
What is the maximum water carrying capacity of 7 inches diameter pipe?
In terms of volume: infinite - there is no limit to how long the pipe can be!
How much water does a pipe 6 inches in diameter times 500 feet long?
A pipe does no water. Te capacity of the pipe with the given dimensions is approximately 98.2 US gallons. Whether or not the pipe holds any water is impossible to say.
Water capacity of 2 X 500' of water pipe?
Volume of a cylinder = (pi) R2 L = (pi) (10)2 (1,500 x 12) =5,654,866.8 cubic inches = 24,480 gallons (rounded)That's the volume of the section of pipe. We have no wayof knowing how much water is in it.
How many gallons of water are in a 1foot of a 10 inch pipe?
There need not be any water in the pipe.Assuming that it is a 10 inch diameter pipe, then its capacity is 4.08 US gallons.
How many gallons of water are in one foot of 20 pipe?
The capacity of one foot of a pipe with an inner diameter of 20 inches is approx 1.36 US gallons. The maximum amount of water is, therefore, 1.36 gallons, but there need not be any water in the pipe.
How many gallons of water are in a 6 pipe 50' high?
The capacity of that section of pipe is 73.44 gallons. (rounded) We have no way of knowing how much water is in it. For all we know, it may be completely empty.
What is the capacity of a 1.25 inch pipe carrying water at 30 and 40 pounds of pressure?
You did not give quite enough information, but I can get you part of the way there. Water can be assumed uncompressible for your application. The temperature of the water will change the actual volume of water present. I will also assume that 1.25 is the inside diameter (or ID) of your pipe. I have to do this, because it depends on the type of pipe, tubing or hose that you are using as to it's real inside diameter. So the cross sectional area of your pipe is ( pi * r* r, or .625 *.625 * 3.1415 ) = 1.2271 square inches. Each foot of pipe will then hold 14.725 cubic inches of water, or 0.064 gallons of water per foot. Hope that helps.
How much water is in a 54 inch by 120000 inch pipe?
The capacity of a pipe with a 54 inch inner diameter and a length of 120000 inches is 1,099,306,101 cubic inches, approx = 636,173 cu feet. There may or may not be any water in the pipe!
What should a 1000 liter capacity cold water storage cistern be equipped with to meet the water regulations?
A screened vent, overflow pipe and insulation.
What is the capacity of a sink and what tool do you use?
The capacity of an average kitchen sink is 20 litres. Tools you use to remove or replace it are a screwdriver and a pair of water pump pliers or a pipe wrench
