. Economic Papers. the whole pipe may act as a solid piece and retain an evenslope from end to end: (1) The foundation under the pipe must be solid. (2) The joints must be tight and strong. In ordinary clay or loam soil, if care is used in trimming the bottomof the trench in which the pipe is to be laid, so that the earth directlyunder the pipe is not disturbed, the foundation will be satisfactory. Ifit is necessary to fill any part of the trench the earth should be thor-oughly tamped before laying the pipe. In swampy, or other uncertain soils, where the weight of the fill, orother loads which
. Economic Papers. the whole pipe may act as a solid piece and retain an evenslope from end to end: (1) The foundation under the pipe must be solid. (2) The joints must be tight and strong. In ordinary clay or loam soil, if care is used in trimming the bottomof the trench in which the pipe is to be laid, so that the earth directlyunder the pipe is not disturbed, the foundation will be satisfactory. Ifit is necessary to fill any part of the trench the earth should be thor-oughly tamped before laying the pipe. In swampy, or other uncertain soils, where the weight of the fill, orother loads which may come on the pipe, are apt to cause it to settle inthe middle, a pipe having as few joints as possible should be used. Thefoundation may be improved (1) by excavating the bottom of the trenchat least 6 inches below where the bottom of the pipe will be and fillingin with sand or cinders, if such material be available, or (2) a support ofconcrete or stone may be placed under each joint as shown in Fig. 8, p. COUNTRY ROADS IN NORTH CAROLINA 25
Size: 1236px × 2022px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookideconomicpape, bookyear1912
