Shaw's Civil architecture; being a complete theoretical and practical system of building, containing the fundamental principles of the art (1852)
Shaw, Edward · Boston, J. P. Jewett · leaf 286
Fi^. 3. … CARPENTRY. 117 To lighten the Girders. Having grooved the sides of the flitches for thetrussing pieces, so as only to be close at the ends,about an inch and a half deep on each side, andhaving greased the head of the lung bolt, and putthe whole slackly together sideways by the screws,proceed then…
Architecture · Building
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