Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 145
itions. In certain parts of the floor frame itmay be necessary to double the joists or place two of them closetogether in order to support some very, heavy concentrated load.This is the case whenever a partition runs parallel with the floorjoists, unless there is another partition under it. Such… … Fig. 142. Sizing Up Joist on Girders 110 CARPENTRY 99
Architecture · Building
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