Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 157
the joists. The upper raftershave a central bearing on purlins, andthe ceiling joists are connected to a bindingpiece which is tied to the purlins as shown,the joists also being fixed to the partitionhead. Although there is no truss, clearlythe whole is triangulated and supported toform a… … Fig. 520.—Construction at the Head of Lowerand Upper Truss. carrying a king-post truss, whereas theobject of a king- or queen-post is to supportthe tie-beam and prevent it from sagging,thereby sustaining tensional stress. Actually,however, no compression whatever is thrownon the queen-posts,…
Carpentry · Joinery
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