The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 173
two pieces ofoak which are inclined towards each other, and which meet atthe centre of the length of the girder, like the rafters of a roof-truss, though nearly if not quite concealed within the girder.This, and many similar methods, though extensively practised,are generally worse than useless ;… … Fig. 205. its depth is required to be greater than any one piece of timberwill allow. Fig 205 shows a very simple yet scientific methodof doing this. The two pieces of which the girder is composedare bolted, or pinned, together, having keys inserted between toprevent the pieces from sliding. The…
Carpentry · Architecture
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