. A practical treatise on natural and artificial concrete; its varieties and constructive adaptations . oveCommissioners, had used considerable quantities of the con-crete tubes, and from his experience in their practical usemay be regarded as a reliable authority on the subject. In addition to these tests we have referred to, Mr. Ellice-Clark made other experiments, which, from the carefulmanner in which the fractures in the pipes were observed,are worthy of being recorded. In describing the mannerof experimenting, the experimenter says:— To determinewhat pressure the three tubes would bear u
. A practical treatise on natural and artificial concrete; its varieties and constructive adaptations . oveCommissioners, had used considerable quantities of the con-crete tubes, and from his experience in their practical usemay be regarded as a reliable authority on the subject. In addition to these tests we have referred to, Mr. Ellice-Clark made other experiments, which, from the carefulmanner in which the fractures in the pipes were observed,are worthy of being recorded. In describing the mannerof experimenting, the experimenter says:— To determinewhat pressure the three tubes would bear under the sameconditions as exist in practice, I had an excavation madethe exact contour of the seating of the tubes; the sideswere packed in clay, the compressive force was distributeduniformly over the tubes, as shown in the accompanying ENGLISH CONCRETE INDUSTRIES. 239 drawing, the mean of the cracking weights was 4393 lb.;the variation, as you will see from the accompanying state-ment, trifling. Figs. 32, 33, and 34, and the figures of observationsappended, are as follows:— Fig. 32. Fig. Bkeaking Weight, 4121 lb. In addition to the carefully arranged system adopted atBourne Valley to ensure the best quality of concrete and itsadvantageous conversion into rock-concrete pipes, the manu-facturers have also introduced a hydraulic apparatus for 240 A PRACTICAL TREATISE ON CONCRETE. testing the streogth of the pipes, as shown by Fig. to the ultimate purpose for which these pipes aredestined, it is desirable to know their capacity to resist, when
Size: 1543px × 1620px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1879
