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Weight for Steel Bars, Pipe, and Tubing (lb)

 

Weight for Steel Bars, Pipe, and Tubing (lb) formulas

\( W \;=\;  10.68 \cdot (D - t) \cdot t  \)     (pipe and round tubing)

\( W \;=\; 13.60 \cdot [\; (l + w) - t \;] \cdot t \)     (rectangular tube)

\( W \;=\; 13.60 \cdot (D - t) \cdot t  \)     (square tube)

\( W \;=\; 0.2836 \cdot t \cdot 144  \)     (plate)

\( W \;=\; 0.2225 \cdot d^2 \cdot t  \)     (plate circle

\( W \;=\; 0.2904 \cdot t \cdot 144  \)     (sheet)

\( W \;=\; 3.403 \cdot t \cdot w  \)     (flat bar

\( W \;=\; 2.945 \cdot d^2  \)     (hexagon bar

\( W \;=\; 2.817 \cdot d^2  \)     (octagon bar

\( W \;=\; 2.673 \cdot d^2  \)     (round bar)

\( W \;=\; 3.403 \cdot d^2  \)     (square bar)

Symbol English Metric
\( W \) = pipe weight per foot (approximate) \( lbf \)  -
\( d \) = diameter \( in \) -
\( l \) = length (long side) \( in \) -
\( D \) = pipe outside diameter \( in \) -
\( t \) = pipe thickness \( in \) -
\( w \) = width (short side) \( in \) -

These formulas calculate the weight per foot for various pipe and structural shapes.

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