Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 397
hes,centfer to center. Fig. 166 shows the form for the 7-foot 6-inchconduit. The centering for the 9-foot and 10-foot conduits was con-structed similarly to the 7-foot 6-inch conduit, except that the ribswere divided into 7 parts instead of 5 parts as shown in Fig. 166. Thespacing of the braces… … MASONRY AND REINFORCED CONCRETE 309 85pace
Architecture · Building
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