Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 303
Fig. 904.—Enlarged Detail of the System of Wedging for Striking Centre at H (Fig. 900). 278 CARPENTRY AND JOINERY. is shown by Figs. 905 and 906. This formis applicable where intermediate supports The right-hand half shows an alternativemethod where the head beam a is supported … are permissible. The left-hand half showshow the timbering would be arranged if sup-ported on five rows of piles or standards. at five positions, but only four rows of pilesor standards are needed. This arrange-ment would provide for a space of about ARCH CENTERINGS. 279
Carpentry · Joinery
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