Southern good roads . igULn^ance or careless-less ami not to actual dishonesty on the part of anytown official. Those who have been must closely associated with thework are also firm in the belief that the quality of thetown highway work of the state as a whole and theverj excellent results secured have been contributed toin no small degree by the simplified system of townhighwaj accounting which has been used in connectionwith the work. Determination of tlie Value of Bituminous Construction By C. S. REEVEChemist, U. S. Office of Public Roads 1) rri\MlXOLS constructiim, after guiug lluough) se
Southern good roads . igULn^ance or careless-less ami not to actual dishonesty on the part of anytown official. Those who have been must closely associated with thework are also firm in the belief that the quality of thetown highway work of the state as a whole and theverj excellent results secured have been contributed toin no small degree by the simplified system of townhighwaj accounting which has been used in connectionwith the work. Determination of tlie Value of Bituminous Construction By C. S. REEVEChemist, U. S. Office of Public Roads 1) rri\MlXOLS constructiim, after guiug lluough) several years of experimenting and resolved itself into a few fairly well defined types,with which the average intelligent highway engineerhas become, in a general way. familiar. The speaker,upon previous occasions l)ef(ii-( this association hasdwelt upin some of the im])iirtant minor details es-sential to successful cnnstruction. and \vill thereforenow treat upon the various methods in ,1 broader sense. One of the Newport Culvert Companys 36 Culverts in theTown of Selma, N. C. with the further purpose of discussing in a general waysome of the contributing factors in the selection of anygiven form of construction. Bituminous macadam construction embodies twocommon tjpes, i. that laid by the penetration orgrouting method and that laid by the mixing is perhaps unnecessary to enter into any of the de-tails of either method, other than the mere statement ofbest accepted practice at present. In the penetrationmethod, this consists in spreading over a well consoli-dated foundation course of crushed rook, gravel or eon-ciete. a wearing c luise of crushed rock Ianging in size from about that Mhich will Ije retained on a one-inch screen to that which will pass a two-and-one- quar-ter inch screen. This c(nirse is laid to a loose depth ofthree inches, lightly rolled, and treated with a Tiniformapplication of hot bituminous material at the rate ofone-and-one-hal
Size: 1961px × 1275px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorvarnerhe, bookcentury1900, bookdecade1910, bookyear1910
