Elementary building construction and drawing : stage 1 (1907)
Burrell, Edward J · London : Longmans Green · leaf 213
the iron under varying temperatures. This is usually done by fixing one end only of the truss to its support, the other being free to move outwards or mwards, as the case may be. To facilitate this, the shoe or chair is made to rest on rollers. The following trusses will be described and… … this construction is not adapted for spans of more .0 than 20 feet. details at A n^275 Fig. 276 gives details at the head and foot of the king Fig. 276. rod. The T-iron rafters are bevelled off so as to butt one ^ against the other at the apex of the roof. Two wrought- iron pTatcs are then…
Building
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