City roads and pavements suited to cities of moderate size. . to coarse, at $ per cubic yard 55 I cubic yard of crushed and dust-screened limestone at $ per cubic yard i 25 Mixing and placing and ramming dry -mixed concrete, one cubic yard i 00 Total per cubic yard , $4 00 The results were good. Portland Cement,—Of forty-two cities, one-third usePortland cements in the proportions of one cement, threesand and six to seven stone or gravel, at an averagecost, for twelve cities, of $ per cubic yard. Natural Cement.—Two-thirds of these forty-twocities use natural cements in the proport
City roads and pavements suited to cities of moderate size. . to coarse, at $ per cubic yard 55 I cubic yard of crushed and dust-screened limestone at $ per cubic yard i 25 Mixing and placing and ramming dry -mixed concrete, one cubic yard i 00 Total per cubic yard , $4 00 The results were good. Portland Cement,—Of forty-two cities, one-third usePortland cements in the proportions of one cement, threesand and six to seven stone or gravel, at an averagecost, for twelve cities, of $ per cubic yard. Natural Cement.—Two-thirds of these forty-twocities use natural cements in the proportion of onecement, two sand and four to five stone or gravel, at anaverage cost, for sixteen cities, of $ per cubic yard. Cost of Extra Work.—The cost of materials makesup seven-eighths of the expense of concrete, so thatthe extra precautions which have here been indicatedand which may increase the labor ten per cent, willadd little to the cost per cubic yard of the result. 55 fV] asQ D n 02 ^. ^ 2 §1 l-H W g w £ > dSI hI<<JB CQ O 00 Oo. (•ejoa-joo; aag)suoiieDgioadsoiBjjng o»p83Qpej Pit -bs jad j ?sajBJ ojBjjnajoqB[ joj noijoaJJoj 328SS , .ooo •joqej aouiiuoosa3BM JO ejBJ SaTjiBAajj OQ-. •joqBj }o sjnoji •sDopBonpdds o[Bj(ng•aajaBJBna Joj uoTjoeaaoj ?eeiQBJBnS ;o pouaj OO DOOiX X) > C^J »n ?3 trt ^ »rt c : X31^ ^^ CiftOOOQOi«0 »rtC^»rtC^ocD»oir;ii^ir:4noinco»r:irtXir5c^]ir^ 52 = O -OX — OXOOOOOO30OO — 0>DX>CnC5aDOOOTXX05 ^5 — 5S ? — — OO — ior;o-H—5-hoS — — — «Oo — Sooi-Hoo — ~?d do : ; /do ,• ^= = d ,• -d do ? • • •o^d •odd do • ?>0 inOOOir^L-iOOirtt—OOO ^irsOinoOi^i-^inir^OO ^OOOi.^OOi^ snopBogr?D8ds ojBgng aDBjjasaaiXBaM JOJ uoi^DajaoQ o~. J. o cr. o . 3v o o o o o5 o o. Oi o o Oi o o5 O o o O 0-. o o 0-. c; o o o cr. o a; jr.— ~ — O OO O riO —-hOO ^^O —Oi-H ^o — oo — ^ O O O »-hO X* o zi^::i^ /d oo ,d ,d_,j_d ,dd
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreets, bookyear1902
