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 200
affords an opportunity forreplacing the upper part. The pieces which are immersed willlast a great length of time, especially when of elm; for it is awell-established fact, that timber is less durable when subject to FRAMING. 183 alternate dryness and moisture, than when it is either continuallywet… … 322.—Centres for stone bridges. Fig- 231 is a design for acentre for a stone bridge where intermediate supports, as pilesdriven into the bed of the river, are practicable. Its timbers areso distributed as to sustain the weight of the arch-stones as theyare being laid, without destroying the…
Carpentry · Architecture
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