Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 691
Still Chimneys, two … CO mpltte, third up li feet. The outside _forms are held in posi-tion by cables and the inside forms byflat steel bars bent to the proper cur-vature. The foims are evenly and accuratelyspaced and great care is taken to havethem plumb and level before the plat-forms and scaffold is carried up…
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