Minutes of Proceedings of the Institution of Civil Engineers Volume 72

Minutes of Proceedings of the Institution of Civil Engineers Volume 72

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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. 1883 edition. Excerpt: ...detect anything unusual going on. By the first few turns of the screws tho intermediate parts of the walls between the needles aro torn away from the foundations; but these parts are closely watched, and, if any unusual binding is observed, they are cut out with chisels. After all the screws have been advanced a distance of 12 inches, the work of fleeting (Fig. 6) is commenced, and the necessity of two pairs of screws under each needle is hero apparent. The cribs are built up two courses in height, when one of the two pairs of screws is taken out and placed on top of the cribs as raised, and tightened up to a firm bearing. The remaining pair is then removed, placed on the top and tightened. The operation is repeated until all the screws under the building have been raised, and the structure is lifted to the height desired. Preparations are then made for moving the building. This is effected by placing on the cribs sliding-timbers of pine, 8 inches by 10 inches, parallel with the direction in which the building has to be moved. These timbers are planed on the surface, and are wedged up perfectly level, and well greased with tallow and Castile soap. On the top of these timbers are placed boards of white oak, 1 inch thick, also planed on the surface and well greased; white oak blocks, 4 inches by 12 inches, are then inserted between the sills and the slideboards, and pine wedges are driven between the sills and the blocks (Fig. 4). This work must be done thoroughly and with great care. The slide-timbers are in as long lengths as can be obtained, and are made continuous by bolting planks on each side at the joints; they are prolonged to the new site destined to be occupied by the building, and are securely supported for the whole distance on...show more

Product details

  • Paperback
  • 189 x 246 x 10mm | 327g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236923804
  • 9781236923806