Question

A box beam is formed by welding together two steel C15x50 channels and two steel plates as shown in the left-handed sketch (a) below. The centroidal properties of an individual channel are shown in the right-hand sketch (b). Determine the composite, centroidal I, of the box beam. Note that and 1y, along with the axis shown in the right-hand sketch, are the centroidal properties/axis, respectively, of an individual channel-equal to our I, and 1, variables we have used in our class. Just another example of how different literature/prof's may use different subscripts-their reasoning in this case is that they are labeling each axis at both ends, x-x and y- y, as you can see in sketch (b). Y 0.650 in. (average thickness) 0.75 in. 0.716 in 15.00 in. X X- 14.7 in. x404 in. IyI11.0in. Area= 0.799 in. -10 in. - (a) 3.716 in (b) IX

Answer 1

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