The illustrated architectural, engineering, & mechanical drawing-book : for the use of schools, students, and artisans ; upwards of 300 illustrations (1856)
Burn, Robert Scott · London : Ward and Lock, 158 Fleet Street · leaf 109
fiff. 1. portions at the poirt h ; parallel to c d draw h i; mersure to i. ^ his willbe the centre of thf arch. In like manner the aqueduct arches in 106 ILLUSTRATED ARCHITECTURAL, Example 2, fig. 2, may be drawn ; tlic lines d, c, a, h being the linos ofthe piers; </ the centre of the under,… … fig. 2. Example 3, fig. 3, where a h is the span of the arch ; c cZ its rise ;
Architectural drawing · Mechanical drawing
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