Cyclopedia of architecture, carpentry, and building; a general reference work .. (1912)
American School (Lansing, Ill.) · Chicago, American school of correspondence · leaf 212
, however,and it is seldom necessary. If a timber is not strongenough to carry its load, andif it is not desirable to replaceit with a steel beam, it maybe strengthened by trussing.There are two methods of trussing beams: by the addition ofcompression members above the beam, and by the addition of… … Fig. 223. Fitting Girders to Steel Beams by Meansof Angles 170
Architecture · Building
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