Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 136
Fig. 441.—Conventional View of Half a Couple Roof with Purlins. … Fig. 442.—Section through Couple-Close Roof. The couple-close roof (Fig. 442) over asmall building consists of rafters, which arebirds-mouthed and fixed to the wall plates ;ceiling joists are fixed to the wall platesand act as ties and counteract the out-ward thrust on the walls. The ceilingjoists…
Carpentry · Joinery
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