Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 493
VAN NOSTRAND'S ENGINEERING MAGAZINE. 477 formulae obtained above, let figure (4) system, and joined to the wall and to the opposite rafter by the upper chord. represent a rafter, trussed after the Howe . Fig. 4. … Next value of x — 30, Let I = 125 feet, the length of the rafter, from Compression in Whence L = 125667 lbs, the ridge to the wall. H I and C D. s = 200 feet, the span of the roof. Next value of x — -10. h = 75 feet, the height of the ridge above Compression in "Whence L = 137667 lbs. the wall. G H…
Engineering
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