Stones for Building and DecorationJ. Wiley, 1891 - 453 Seiten |
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
abundant acid andesite augite beautiful beds belt biotite black mica blocks building purposes building stone calcareous calcite carbonate cement cent chemical City coarse color compact composition constituent construction contain County Creek crystalline crystals cubic dark deposits diabase diorite disintegration dolomite durable Edge exposure extensively quarried feet in thickness feldspar fine-grained formation fragments furnish Geology gneiss grains granite green greenish hard hornblende inches iron oxides irregular Island layers less lime limestone magnesia magnesian limestone marble mass massive material mica miles mineral Minn monumental Mountain nearly obtained Ohio oolitic ornamental orthoclase outcrops owing pink plagioclase polish porphyry portions Professor pyrite pyroxene quarries quartz readily Report River rock sand sandstone schist serpentine siliceous Silurian slabs slate soapstone soft split stone occurs structure surface syenite texture thin tion town Triassic variety various varying veins Vermont vicinity weather yellowish York
Beliebte Passagen
Seite 92 - The most interesting building material in the entire state of Maryland is the " Potomac marble," " calico rock " or " Potomac breccia," which has been used occasionally for the greater portion of the century.
Seite 325 - ... balls let fall from a considerable height. With such difficulties as these to contend with it is not surprising that the building should have been considered a wonder when completed, and that people coming to Boston from a distance made it a point to see and admire this great structure. The wonder, however, was not that the granite could be broken into shape by such methods, but "that stone enough could be found in the vicinity of Boston fit for the hammer to construct such an entire building....
Seite 53 - Serpentine is essentially a hydrous silicate of magnesia, consisting when pure of nearly equal proportions of silica and magnesia with from 12 to 13 per cent, of water. The massive varieties quarried for architectural purposes are always more or less impure. containing frequently from 10 to 12 per cent, of iron...
Seite 111 - It is as a rule very hard to work, and, as exhibited in the capitol at Albany, the surface is often disfigured by irregular cavities and flaws •which are rather unsightly. The color is said to fade on exposure to the weather, and hence the stone is used mostly for interior work. An excellent outcrop of this marble occurs on the shore of Mallet's Bay, in the town of Colchester. The strata at this point .are nearly horizontal, and in many places form the banks of the lake. One of the best quarries...
Seite 314 - An important feature of these joints, as mentioned by this authority, is the direction in which they intersect each other. In general they have two dominant trends, one coincident on the whole with the direction in which the strata are inclined from the horizon, and the other running transversely at a right angle, or nearly so. The first are called "dip joints...
Seite 194 - Boston as early as 1737, but it was not until the early part of the present century that its use became at all general.
Seite 48 - Up to 1867 some 2,020 tons had been quarried and sold. In this latter year some 3,700 stoves were manufactured by one company alone. The business has been conducted upon a large scale ever since. The bed has been followed some 400 feet, and the present opening is some 40 feet wide, 80 feet long, and 80 feet deep. Other beds constituting a part of the same formation occur in Weare, Warner, Canterbury, and Eichmond, all of which have been operated to a greater or less extent.
Seite 395 - ... thus prevent all access of moisture. Whatever the substance, it must be of such a nature as in no way to discolor or disfigure the stone. Paint. — This is one of the substances most generally used and which has been employed on the porous sandstone of the Capitol, White House...
Seite 337 - ... apparatus is attached by a swivel to a perpendicular guide-bar. This guide-bar is secured to the boiler behind it, which forms the main support of the machine. Upon the guide-bar the boring apparatus may be raised or lowered at pleasure, for the purpose of boring a series of holes in a perpendicular lino if desired.
Seite 110 - There are three beds of marble running through the town, north and south. The most easterly has a breadth of some 200 feet, and the stone is of the same character as that at Sutherland Falls or Proctor, as the town is now called. The middle bed is separated from the first by about 200 feet of lime rock. The bed itself is some 400 feet wide, and the stone varies in color from pure white to dark blue. The third or west bed which is thought to correspond to that of West Rutland is about half a mile...