Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 401
emoval of the center-ing, and for permanent camber. The centers should be constructed so that they can be easilytaken down. To facilitate the striking of centers, they are usuallysupported on folding wedges or sand-boxes. ^Mien the latter methodis used, the sand should be fine, clean, and perfectly… … Fig. 169. Wedges Used in Placing andRemoving Forms. 330
Architecture · Building
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