Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 274
y is strict and isboth novel and efficient. All laborersand inspectors connected with placingconcrete in the forms are furnishedwith hip boots and the consistency ofthe concrete must be such that a manworking in it will sink not less than2 in., nor more than 10 in. Inasmuchas the concrete is placed… … Power Iloii^t I Draft Tube Chamber Showing Center Support-ie« Tnlsen Feb. 1«, 1924. on the top, in which case the concretein too dry, or whether they sink totheir knees, in which case it is gettingtoo wet for best results. Honeycombingniiaiis the discharge ot the Inspectoron the section; needless…
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