Handbook of construction plant, its cost and efficiency (1918)
Dana, Richard Turner, 1876-1928 · New York, McGraw-Hill book company, inc., [etc., etc.] · leaf 477
5-inch, 6%-lb. Channels, K,^ . ,. norl-and 9-inch, 21-lb. I-Beams. | Weight, 33 lbs. per sq. ft. Furnished with or v/ithout wood filling. STYLE No. 3. Composed of standard 12-inch, 31i^-lb.] I-Beams, with patented Interlocking [-Weight, 34 lbs. per sq. ft.Clips, J or 9-inch, 21-lb. I-Beams, with… … Fig. 200. Fig. 201. Fig. 202. Fig. 203. Fig. 204. Fig. 200. A core and cylindrical casing are first driven to therequired depth. Fig. 201. The core is now removed and a charge of concretedumped to the bottom of the casing. Fig. 202. The core is now used as a rammer, to compress thisconcrete into…
Contractors' operations · Building
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