A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 194
Fig. 16. Fig. ir. to dress them properly. If the back of the stone is thus leftslack and tmderpinned, it is liable to break in the middle.It is also necessary that the abutting surfaces should not beconvex, so as to rock on each other and cause instability. Rusticated joints, as shown in Figs. 14…
Architecture · Building
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