This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: ...vaults they must be below the springing line. Barrel vaults were built as follows: brick rings were generally placed about 2 feet apart, and were joined together at regular intervals by brick bonding courses. These divided the vault into a series of rectangular compartments, which were filled with concrete of no great ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: ...vaults they must be below the springing line. Barrel vaults were built as follows: brick rings were generally placed about 2 feet apart, and were joined together at regular intervals by brick bonding courses. These divided the vault into a series of rectangular compartments, which were filled with concrete of no great thickness. The brickwork was supported on wooden planks and light wooden centering, and was allowed to set before the concrete was added. Sometimes the rings were much farther apart, in which case planks were laid between them to support the first layer of concrete. When this layer had set, it was more than sufficiently strong to carry the second layer; and the more layers that were put on the stronger the vault became. A thorough wetting on the back of each layer before the next was applied ensured that the whole should set into one solid mass. Sometimes, according to M. Choisy, another plan was adopted. Above a light centering of wood, large square tiles were laid flat and bedded in cement; and after these had set, a second layer of somewhat smaller tiles was laid on top. Some of the latter were bedded vertically, so as to give a better hold to the concrete. These two thicknesses of tiles, assisted as they were by the centering below, formed a bed sufficiently strong to carry the weight of the first layer of concrete; afterwards the diiTerent layers were applied as mentioned above. By this arrangement the wood centering carried the first course of tiles; that carried the second; the two together supported the first layer of concrete, and that in its turn was strong enough to receive more concrete. In intersecting vaults much the same method was adopted as in barrel vaults. At the lines of intersection ribs were built first, consisting of til...
Read Less
Add this copy of A History of Architectural Development..., Volume 1 to cart. $60.53, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2010 by Nabu Press.