Rock Products Volume 11, No. 2

Rock Products Volume 11, No. 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. 1911 edition. Excerpt: ... mixer must produce a concrete of uniform consistency and color with the stones thoroughly mixed with the water, sand and cement. Consistency.--The materials shall be mixed to produce a concrete of such consistency that the water will flush to the surface under heavy tamping Retempering.--Retempering, that is. remixing with additional wter. mortar or concrete that has partially hardened, will not be permitted. Forms.--The forms shall be smooth, free from warp of sufficient strength to resist springing out of shape' and of'a depth to conform to the depth of the proposed work. Mortar and dirt shall be removed from forms that have been previously used. The forms shall be well staked and thoroughly braced and set to the established lines, their upper edge conforming to the grade of the finished curb The work shall be blocked out in sections which shall not measure more than six feet in length. The cross forms shall be of V4-ln. metal, of a depth to correspond to the depth of the proposed work, and shall extend the full width of the work. They shall be left in place until the wearing surface is floated. Wood forms shall be moistened before the concrete is placed. Placing Concrete.--The concrete shall be deposited in the forms and tamped in place, so that the upper surface shall be true, uniform and parallel with the surface of the finished work. In conveying the concrete from the place of mixing to the place of deposit, the operation must be conducted in such a manner that no mortar will be lost and the concrete must be so handled that the foundation will be of uniform composition throughout, showing no excess nor lack of mortar in any place. Facing or Wearing Surface.--The facing or wearing surface shall be composed of one part Portland...show more

Product details

  • Paperback | 80 pages
  • 189 x 246 x 4mm | 159g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236817494
  • 9781236817495