Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 175
the end of the rafters to serve asbacking when dressing the lead apron, which Belfast, Irish, or Bowstring Truss. The Belfast, Irish, or bowstring roof (Fig.591) is a cheap form of construction exten-sively used for large spans. The truss con-sists of the sole-piece a, made double, asshown, of two… … f T 1 F Fig. 591.—Section through Belfast Roof.
Carpentry · Joinery
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