Volumn weight of H2O?

Question

I need to know what would be the Pounds Per Square Inch of a 25 foot pipe 1/2" Inside Diameter filled with water. The answer can be either in PSI or volumn weight less the weight of the pipe.

Answer 1

If you are talking hydrostatic pressure, it is simply the function of the depth at which you are measuring. It is roughly .433 psi per foot. In other words. If the pipe is verticle and you are measuring the pressure at the bottom, it would simply be 25 X .433. The volume weight has nothing to do with this.

Answer 2

Err.. i think your question is kind of unclear.

1. You can find the volume of the H20 by
V = L x A ; where L = length of pipe, A = pi * D^2 / 4....
and the dimension in cubic inch

2. You can find the Weight of the H20 by
W = V x Dw
where, V from equation 1, Dw is water Density... 1000 kg/m3. you may need to convert them)

3. Psi is the pressure that your question asking.
-Atmospheric pressure is always 1 bar in general. Normally we don't take Atmospheric Pressure into consideration unless the allitude in difference of 1000 meter.
-I cannot compute the Psi for you as i do not know your 25 foot of pipe is vertically or horizontally place.
- If horizontally place, Psi will be approximitely to 0
- If vetically placed, then the pressure, Psi will be depending on which point you want to calculate. You may use the following equation,
Pressure = P = Dw x G x H
Whereby, P = Pressure in Psi
Dw = Density of Water
G = Gravity in Feet / Second^2
H = Height in feet, distance from A to B whereby
Point A is from the surface of the water
Point B is any point that you wish to calculate but
logically it won't exceed 25 feet.

Answer 3

The standard formula for the hydrostatic pressure would be

p = rho .g . h

where rho is the water density, g is the acceleration of gravity, and h is the height of the water column.

Water pressure is about 1 decibar per meter, or about 1 atmosphere per 30 feet. Thus your water pressure will be roughly 15 pounds per square inch (ie., one atmosphere)

Answer 4

we first calculate the volume of water wich = L πd² / 4
= 25*12 *π *0.5 *0.5 / 4
= 58.904 in³

and while density of water
ρ = 0.036 127 292 lb/in³
then
mass of water = 58.904 * 0.036 127 292
= 2.128 lb

we calculate the area of the pipe =Lπd
=25*12* 0.5 * π
= 471.24 in²
so Volumn weight =
0.0045 lb/in²

Answer 5

I would like to answer this question.....but I am not an expert in this area. I will do some research and try to respond with a well thought out and in depth answer.