. Public works . ving in Boston, Albany,N. Y., New York, Jersey City, X. J., Philadelphia, Wil-mington, Baltimore and Washington. The following in-formation is furnished us by John W. Webb, city engi-neer of Salisbury: In June, 1913, the North Carolina Public Service Com-pany laid about square yards of durax betweenits rails on a stretch of double track on a 5 per cent gradeon Main street, Salisbury. The blocks were laid instraight courses and the joints filled with a 1: 1 cementgrout. Bird S. Coler (formerly comptroller of NewYork), president of that company, states that he be-lieves it
. Public works . ving in Boston, Albany,N. Y., New York, Jersey City, X. J., Philadelphia, Wil-mington, Baltimore and Washington. The following in-formation is furnished us by John W. Webb, city engi-neer of Salisbury: In June, 1913, the North Carolina Public Service Com-pany laid about square yards of durax betweenits rails on a stretch of double track on a 5 per cent gradeon Main street, Salisbury. The blocks were laid instraight courses and the joints filled with a 1: 1 cementgrout. Bird S. Coler (formerly comptroller of NewYork), president of that company, states that he be-lieves it will outlast any other form of track pavementthey have ever laid (because of the excellent quality ofthe granite used) and that it presents an attractive ap-pearance and is easily kept clean and sanitary. The city of Salisbury last summer completed a stretchof 1,100 square yards of this pavement on a 5-inch con-crete base with a gas tar filler and considers it so satis- 800 MUNICIPAL JOURNAL Vol. XXXVII. No. DURAX OX MAIX STREET, SALISBURY,for top coating. First Durax street in the UnitedStates. factory that it decided to lay an additional piece in thefall. The quietness of the pavement, where eitherpitch or asphalt filler is used, says Mr. Webb, is re-markable and altogether different from what one expectsof a granite block pavement. Any granite that has goodlines of cleavage will work very readily in this machine,but in selecting a granite for paving it is highlydesirable that use should be made only of granite hav-ing a high degree of toughness, compressive strengthand coefficient of wear. The more important features of the Salisbury specifi-cations are as follows: Cubes to have six irregular, approximately square sur-faces; each edge to measure between 4 and 2^4 inches,provided the blocks used on any one city block shall notvary more than of an inch. Blocks to be laid on a one-inch sand cushion, with nopart of any joint exceeding inch at the surface; i
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