Q:# What is the formula used to calculate pipe weight?

A:### Quick Answer

**The formula for calculating pipe weight is m=10.68 (d _{o} – t_{w}) t_{w} , where m is weight per foot (lbs/ft), d_{o} is outside diameter in inches, and t_{w} is wall thickness in inches.** The outside diameter and wall thickness of the pipe are required to calculate the weight per foot. The formula doesn’t take into account weight alterations after end finishing, e.g., upsetting or threading.

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The weight-per-foot of a 4-inch steel pipe with an outside diameter of 4.5 inches and wall thickness of 0.237 is calculated as follows: m = 10.68 ((4.500 in) - (0.237 in)) (0.237 in), m=10.79 lbs/ft. The weight, wp, of an empty pipe per unit length (kg, lb) is given by w_{p} = ρ_{m} _{A}m

= ρ_{m} (π (d_{o} / 2)_{2} - π (d_{i} / 2)^{2})

= ρ_{m} π (d_{o}^{2} - d_{i}^{2}) / 4

The weight of liquid in a pipe per unit length is given by:

w_{l} = ρ_{l} A

= ρ_{l} π (d_{i} / 2)^{2}

= ρ_{l} π d_{i}^{2} / 4.

The weight of a pipe and the liquid in it per unit length is given by w_{p} + w_{l}.

- Q:
## How do you calculate the miles between two points?

A:

Full Answer >**A variety of electronic map tools can be used to calculate the number of miles between any two points on a map.**The Pythagorean theorem can also be used if the component distances have been determined.Filed Under: - Q:
## How much standing water is in a 1-foot-long section of 6-inch pipe?

A:

Full Answer >**The volume of a pipe that is 1 foot long and 6 inches in diameter is 0.2 cubic foot.**This correlates to approximately 1.5 gallons of standing water potentially inside the pipe.Filed Under: - Q:
## When ma*m b = m(a+b), why are a and b added instead of multiplied?

A:

Full Answer >**When like terms with exponents are multiplied, the number of times the term is multiplied by itself is increased by the additional number of times indicated by the second exponent.**Therefore, the product is found by adding the exponents together.Filed Under: - Q:
## What is the formula for hoop stress?

A:The formula for hoop stress is the internal pressure times the internal diameter of the cylinder, divided by twice the wall thickness of the cylinder. The formula is expressed as ?h = (pd)/(2t), where ?h is the hoop stress, p is pressure, d is diameter and t is thickness.

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