### How much does 8 Ductile iron pipe weight per foot?
Ductile iron pipes are commonly used in water distribution systems due to their strength and durability. Knowing the weight of a ductile iron pipe per foot is essential for planning and design purposes. Here is a step-by-step guide to calculating the weight of 8 ductile iron pipes per foot.
#### Step 1: Determine the diameter of the pipe.
The diameter of the ductile iron pipe will have a significant impact on its weight per foot. Measure the diameter of the pipe using a tape measure or ruler. For this example, let's assume the diameter of the ductile iron pipe is 8 inches.
#### Step 2: Calculate the cross-sectional area of the pipe.
Next, calculate the cross-sectional area of the pipe using the formula A = πr^2, where r is the radius of the pipe (half of the diameter). In this case, the radius is 4 inches, so the cross-sectional area would be A = 3.14 * (4)^2 = 50.24 square inches.
#### Step 3: Determine the weight of ductile iron per cubic inch.
The weight of ductile iron per cubic inch is approximately 0.26 pounds. This value may vary slightly depending on the specific grade of ductile iron.
#### Step 4: Calculate the weight per foot of the ductile iron pipe.
To calculate the weight per foot of the ductile iron pipe, we need to first convert the cross-sectional area from square inches to square feet (since there are 144 square inches in a square foot). The cross-sectional area in square feet would be 50.24 / 144 = 0.35 square feet.
Next, multiply the cross-sectional area by the weight of ductile iron per cubic inch and then multiply by the length of the pipe (1 foot in this case) to get the weight per foot. The calculation would be:
Weight per foot = 0.35 * 0.26 * 1 = 0.091 pounds per foot.
#### Conclusion.
Therefore, based on the given measurements and assumptions, an 8-inch diameter ductile iron pipe would weigh approximately 0.091 pounds per foot. Remember that this calculation is a rough estimate and actual weights may vary depending on the specific grade and wall thickness of the ductile iron pipe.
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