Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 294
ARCH CENTERINGS. 269 … itr vn^v vv 270 CARPENTRY AND JOINERY. The two outer ribs shown at A (Figs. 880 to882) are larger so as to support the series ofsiones forming the second ring. The con-ventional view (Fig. 883), showing part of theribs, the wedges, and the method of support-ing, will make the construction clear.…
Carpentry · Joinery
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