The Roorkee Manual of Applied Mechanics; Direct and Transverse Strain, Principally by Analytical Methods Volume 2

The Roorkee Manual of Applied Mechanics; Direct and Transverse Strain, Principally by Analytical Methods Volume 2

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 edition. Excerpt: ...account of the whole construction is contained in Proc Inst. O.E., Vol. LXXXIII., 1885). The quality of the material composing the concrete however, was vastly inferior to any of the concrete shown in Table C. It was all obtained locally, from Jutogh, distant four miles from Simla. The lime 1881' OHAPTBR XXI. SOME REMARKS ON FOONDATIONs. ART. 326-331. was a poor lime; the surkhi wasiobtained from the loam overlying the limestone; the aggregate was the broken limestone. The proportions of the concrete were 1 part lime, 2 parts surkhi to 6 parts of stone broken to 1 inch gauge. The concrete was laid in layers of 3 inches, and rammed until the mortar came to the surface. It is noteworthy that much of this important work was done by unskilled military labour. 326. In America, layers of steel rails are sometimes used in conjunction with concrete in foundations of lofty structures. A bed of concrete is first laid, then a layer of rails close together embedded in fine concrete, then another layer of rails at right angles to the first, then a course of 6 inches stone, then the superstructure. 327. When the weights of the different parts of a building (e.g., the tower and main body of a church) are very unequal, they should be disconnected both in the footings and above ground, no bonding should be permitted between the two, the joint should be closed by a chase, and even friction should not be allowed to act between the parts. After the building has settled, the line of connection can be closed up. 328. Where, owing to the slope of the ground, the bottom of the excavation is cut in steps or benches, the foundations should be brought up to a uniform platform for footings in concrete, or in brickwork in cement. If they be built in mortar the...show more

Product details

  • Paperback | 134 pages
  • 189 x 246 x 7mm | 254g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236854071
  • 9781236854070