equivalent beams
example bearer with floor load width of 3.6m, and span of 5.0m
requires LVL 400 x 75 mm
a reduction in hight of R requires increased width of 1/R^3
R 1/R^3
1 1
1/2 8
3/4 64/27
h b
LVL 400 75
200 600
300 178
steel 400 4
200 30 see video http://www.youtube.com/watch?v=UULotcNh6To&feature=related
300 9
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