Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 292
Fig. 878.—Half Elevation showing Centering to a Stone Arch; also Half Elevation of Centering to Internal Brick Arch. ally done by supporting each, ring upon one section (Fig. 882) it will be seen that the or more ribs, the case here dealt with being middle centre b is smaller. It is formed of so… … Fig. 879.—Conventional View showing the General Arrangementof Centering, Wedges, Means of Support, etc. 268 CARPENTRY AND JOINERY.
Carpentry · Joinery
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