Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 407
els of 10 feet each, that the reader is familiar with the prin- having a moving load of 8 tons, and a ciple of the lever, and the " triangle and dead load of 2 tons per panel per truss. polygon of forces." Sufficient extension Height of truss 10 feet. Scale of tons of the latter for our purpose,… … A. MAXIMUM STRAINS IN CHORDS. I truss, will be one-half of the weight of | the truss and its load, or 8x10-^2 = 40 We will assume the fact as already proven, that the maximum chord strains ! tons. Since one half of one panel | weight is supported immediately by the occur when the truss is fully…
Engineering
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