File:Image from page 78 of "City roads and pavements suited to cities of moderate size." (1902).jpg

English: Caption:

BEACON STREET, BOSTON, 1901. Creo-Resinate Wood-block Pavement in Progress in August, 1901.

Identifier: cityroadspavemen00juds Title: City roads and pavements suited to cities of moderate size. Year: 1902 (1900s) Authors: Judson, William Pierson, 1849-1925 Subjects: Streets Pavements Roads Publisher: New York : The Engineering news publishing company Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress

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Text Appearing Before Image: set in the work.The blocks were set on end with the fibre vertical,forming three-inch rows across the street from curb tocurb, each block breaking joints two inches with blocksin the next row. To provide for the expansion of the blocks when wet,expansion-joints were formed along each side of thepavement; these joints being two inches wide betweenthe curb and the gutter-course, and an additional one-inch joint between the gutter-courses, which wereformed of blocks set in rows running lengthwise of thestreet. Curbs, eighteen inches deep, were needed toresist the thrust which moved twelve-inch curbs. Bet-ter results were reached when these expansion jointswere filled with mastic than when filled with sand orwith clay puddle. These widths of joint were used onpavements sixty-four feet wide and gave good results. The best results were obtained when the blockswere forced close together on grades up to one intwenty and with one-quarter-inch joints on steeper 72 AiMEKlCAN HARD-WOOD PAVKMKNTS.

Text Appearing After Image: < c £c -^ C -7 < - O 73 CITY ROADS AND PAVEMENTS. grades up to one in thirteen, or eight per cent. Aftercompleting sixty Hneal feet of roadway, the surface ofthe pavement was swept with hot coal-tar and sprinkledwith hot sand, and again swept with hot tar until thespaces were thoroughly flushed with the plastic paste. As to the durability of these hard-wood blocks ascompared with cubical blocks of blue-stone, Mr. Richardstates that the blue-stone blocks have shown a wear ofone inch per year, while the hard-wood blocks, laid asdescribed and subjected to similar traffic, have showna wear of one-fiftieth {-^\) inch per year. Where the joints have been filled with hydrauliccement, the results were not as satisfactory as whereblocks were laid with close joints, but with the con-struction described, these wood-block pavements arefree from the various faults of our cedar blocks and areexpected to have a minimum life of sixteen years, equal-ing asphalt. In Melbourne, similar pavement i

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