. Bulletin. Agriculture; Agriculture -- Arizona. Other Uses of Cement Pipe 159 has been much more satisfactory for our use than the hand-tamped. Have purchased and used both and very much prefer the machine- ; In answer to an inquiry some months later as to how the cement pipe culverts were withstanding the traffic, the county engineer states*: "These culverts are in good condition and show no signs of weakness. After being laid, heavy rollers and motor trucks have run over them. Since road has been completed heavy motor trucks. Fig. 36.—Carrying- capacities of cement pipe and c
. Bulletin. Agriculture; Agriculture -- Arizona. Other Uses of Cement Pipe 159 has been much more satisfactory for our use than the hand-tamped. Have purchased and used both and very much prefer the machine- ; In answer to an inquiry some months later as to how the cement pipe culverts were withstanding the traffic, the county engineer states*: "These culverts are in good condition and show no signs of weakness. After being laid, heavy rollers and motor trucks have run over them. Since road has been completed heavy motor trucks. Fig. 36.—Carrying- capacities of cement pipe and corrugated iron culverts of equal diameters. weighing, when loaded twenty-two thousand pounds, including load and weight of vehicle, have been operated over road and have not injured the concrete pipe culverts in the ; For culverts for special service, where great strength is required, reinforced concrete pipe can be used. (See page 93.) 3. Capacity: The smooth interior of cement pipe has a great ad- vantage over the corrugated interior of metal culverts. Every cor- rugation causes eddies with consequent loss of head. The carrying capacities of long pipe lines of corrugated iron have been found to •From a private communication from C. M. Hindman, May 11, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Arizona. Agricultural Experiment Station. Tucson : Agricultural Experiment Station, University of Arizona
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