King, Charles A. (Charles Albert), b. 1865 · New York, Cincinnati [etc.] American book company · leaf 111
= B. Formula 30. M = Z on Bl,, Y on To. To. = M. In Fig. 90 is illustrated a simple method of lajdng outthe cuts of a purlin, after the roof is partly constructed.The stick from whichthe purlin is to be cutis laid upon the outsideof the rafters, as at ah,or held against them onthe inside, parallel… … ROOF CONSTEUCTION 97
Carpentry
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