Reinforced Concrete Field Handbook; REV. and Enl

Reinforced Concrete Field Handbook; REV. and Enl

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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. 1915 edition. Excerpt: ... noted previously. Teach your carpenters never to do any sawing over a finished beam box. The sawdust and chips will all have to be cleaned out again, and it is unnecessary carelessness. Sometimes with very deep girders, it may 'be necessary to secure the sides against bulging from the pressure at the half depth. A good way is to use No. 9 iron wire. Drill two small holes in each girder side opposite each other and pass the ends of a suitable piece of wire through. Twist the ends together securely on the oueside, then if necessary put a small stick or rod between the two strands inside the form and twist until the sides are brought together tight up against a spreader of the right length. Of course the wire must bear on some piece or cleat or something in the loops outside the box to distribute the pressure against the girder sides. This wire may be cut very easily to allow removing the sides. This wire is put in after the steel is placed. Check over forms very carefully before running any concrete. See that all walls, girder and beam sides and columns are true, plumb and thoroughly braced. See that spacing, width and depth are accurate. Never trust too much to memory. Carry blue prints with you in checking up. 1 It is very poor policy to let any centering stand in a _hot sun an hour longer than is necessary. Plan the placing of steel and concrete accordingly. Footing F0rms--Concrete footings for columns and piers are built either in step form or with a sloping of battered faces. It is a very simple matter to build forms for step footings. Simply make a strong form for one layer at a time. Run that layer and when it has sufficiently set put on the form for the next and so on. The form must be capable of being taken apart easily in order...show more

Product details

  • Paperback | 28 pages
  • 189 x 246 x 2mm | 68g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236862996
  • 9781236862990