Which way is C channel stronger?
C-Channel is a really popular beam profile for auxiliary beams. Though we also see it for main beams, it's a lot more common for cross members and other places. In the vertical direction, C-Channel is typically stronger for the weight than tube.
The maximum bending stress for the channel would be . 6 x 36 ksi and could be less. Therefore the C3x4. 1 allowable stress = 19775 psi for 78 ' unbraced length of compression flange and C4 x 5.4 is 18057 psi.
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