Popular Hand Book for Cement and Concrete Users: A Comprehensive and Popular Treatise on the Principles Involved and Methods Employed in the Design and Construction of Modern Concrete Work ...Norman W. Henley Publishing Company, 1911 - 430 стор. |
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Результати 6-10 із 81
Сторінка 55
... The first form is a trough whose bottom and sides are provided with pegs or other deflectors which give the material a zig - zag motion as it flows along . The second form consists of a series [ 55 ] How to Mix and Place Concrete.
... The first form is a trough whose bottom and sides are provided with pegs or other deflectors which give the material a zig - zag motion as it flows along . The second form consists of a series [ 55 ] How to Mix and Place Concrete.
Сторінка 56
... consists of a series of hoppers , set one above the other , so that the batch is spilled from one into the next and is thus mixed . With a good mixer the output depends upon the methods of FIG . 10. - Trump Automatic Measuring ...
... consists of a series of hoppers , set one above the other , so that the batch is spilled from one into the next and is thus mixed . With a good mixer the output depends upon the methods of FIG . 10. - Trump Automatic Measuring ...
Сторінка 59
... consists of running a spade or flattened shovel down against the face of the form and working up and down . This action causes the stone or gravel to be pushed back slightly from the form , and allows the cement grout to flow against ...
... consists of running a spade or flattened shovel down against the face of the form and working up and down . This action causes the stone or gravel to be pushed back slightly from the form , and allows the cement grout to flow against ...
Сторінка 63
... consists of a tube of wood or sheet metal , which reaches from above the surface to the bottom of the water . It is operated by filling the tube with concrete and keeping it full by successive additions , while allowing the concrete to ...
... consists of a tube of wood or sheet metal , which reaches from above the surface to the bottom of the water . It is operated by filling the tube with concrete and keeping it full by successive additions , while allowing the concrete to ...
Сторінка 65
... consist of from 1 to 1 1/2 inch boards , which are supported by 2 x 4 inch studs , set about 2 feet apart . The studs are also braced with 2 x 4 inch diagonals . The diagonal braces are held in position by posts driven into the ground ...
... consist of from 1 to 1 1/2 inch boards , which are supported by 2 x 4 inch studs , set about 2 feet apart . The studs are also braced with 2 x 4 inch diagonals . The diagonal braces are held in position by posts driven into the ground ...
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Сторінка 25 - Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours.