Wilson’s Carpentry and joinery / by John Wilson (1891)
Wilson, John · Manchester [England] : Percy Bros. · leaf 156
.Exercise 14. Determine the section of a cast-iron girder to carry aI safe distributed load of nine tons over a 20 feet span. A tlle sPan ■ tllen (stres3 in fianS0S)50400 lbs. Faotor of safety=3. Area of bottom flange =-6Area of top =1-36 sq. ins. 112000To find the dimensions of the flanges when… … I r 1 I I /Cast Iron
Carpentry · Joinery
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