Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, Comstock · leaf 146
e for the purpose ofholding up the walls whilebeing underpinned, i sshown in ¥\g. 84. The props or shores areinserted in sockets cut in Ih.e wall, with their lower ends resting on timber cribs su])ported o n the ground. At least two sets of shores should be u s e d , one to support the wall as low… … ifc-Steel Wedge Si: I20 BUILDIXG COXSTRUCTION. (Cii. Ill) than one-third of their height. The platforms should he madesufficiently large, so as not to bring^ too great a pressure on thegrinmd; and the shores should he driven into place by oak orsteel wedges. The shores should be spaced according to…
Building · Carpentry · Masonry
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