San Francisco : Architect and Engineer, Inc · leaf 399
ble resistance to bend-ing so that the form backing would not, onmany types of work, have to be so tight or freefrom knot-holes and other defects as would benecessary if no absorptive lining were used.By using a lower grade of lumber some savingin the cost of backing might be effected that Glazing… … would partially offset the additional cost ofthe absorptive form lining. The absorptive form lining as now used un-doubtedly produces an increase in the cost offorming. Since the cost of forming is generallya function of the contact surface area, it isreadily seen that the cost for thin sections…
Architecture · Building
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