Bulletin, Issue 8

Front Cover
Geological Survey of Georgia., 1901
 

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Page 46 - The middle eighteen feet of pavement is to be coated with hard stones to the depth of six inches. Four of these six inches are to be first put on and worked in, by carriages and horses, care being taken to rake in the ruts, until the surface becomes firm and consolidated, after which the remaining two inches are to be put on.
Page 15 - At such times obstructions and quarrels were frequent, and the path was sometimes blocked up during a long time by carriers, neither of whom would break the way. It happened almost every day, that coaches stuck fast, until a team of cattle could be procured from some neighbouring farm, to tug them out of the slough.
Page 46 - All the irregularities of the upper part of the said pavement are to be broken off by the hammer, and all the interstices to be filled with stone chips firmly wedged or packed by hand with a light hammer, so that when the whole pavement is finished there shall be a convexity of four inches in the breadth of fifteen feet from the centre.
Page 48 - The stones became rounded by the excessive attrition, they were subjected to, their more angular parts wearing away, and the weaker and smaller ones being crushed. The experiment was not •pushed beyond this point. It was...
Page 46 - Upon the level bed prepared for the road materials, a bottom course, or layer of stones, is to be set by hand, in form of a close firm pavement ; the stones set in the middle of the road are to be...
Page 16 - Beaumaris he was forced to walk great part of the way; and his lady was carried in a litter. His coach was, with much difficulty, and by the help of many hands, brought after him entire.
Page 14 - It was conducted over pathless sierras buried in snow; galleries were cut for leagues through the living rock; rivers were crossed by means of bridges that swung suspended in the air; precipices were scaled by stairways hewn out of the native bed; ravines of hideous depth were filled up with solid masonry; in short, all the difficulties that beset a wild and mountainous region, and which might appal the most courageous engineer of modern times, were encountered and successfully overcome.
Page 15 - It was only in fine weather that the whole breadth of the road was available for wheeled vehicles. Often the mud lay deep on the right and the left ; and only a narrow track of firm ground rose above the quagmire.
Page 110 - There are a number of localities along the several railroads of North Georgia, where quarries of this superior road-material can be opened up at a small cost, and the stone can be readily shipped to all parts of the State, for both street and road purposes. The trap rock of the State is almost unknown ; and, as a consequence, it has had no use in road-construction.
Page 79 - The writer has, however, collected and shown in accompanying table some of the more important results thus far obtained, — a sufficient number to indicate the scope of the work done. In this table the stones are arranged in the order of their power of resisting abrasion. Column 1 contains the specific density of the stones ; column 2, the coefficients of abrasion (determined in the manner previously described) ; the next column gives the number of blows required to stress the...

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