Civil Engineers' Pocket Book: A Reference-book for Engineers, Contractors, and Students, Containing Rules, Data, Methods, Formulas and Tables |
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Common terms and phrases
acid angle arch base beam bending bolts bracing brick bridge calcite carbon cast cement cent chord circle circular column Common Logarithms compression cosec Cosine Cotang creosote Cube cubic cubic foot curve cylinder decimal diagram diam diameter equal equation EXSECANTS feet feldspar fiber flange floor forces formula fraction ft.-lbs girder grav gravel hence horizontal hornblende inches iron joints length lime live load logarithms masonry material maximum metal meter moment of inertia mortar neutral axis panel parabola pier piles Pine plane plate Portland cement pounds pressure proportional R₁ radius radius of gyration Reinforced-Concrete rivets rods roof sand secant shear side Sine span specific gravity square foot steel stone strength surface Table Tang tangent temperature tensile tension tests thickness timber truss velocity vertical wall weight width wire wood
Popular passages
Page 408 - All proportions should be stated by weight; the quantity of water to be used should be stated as a percentage of the dry material. The metric system is recommended because of the convenient relation of the gram and the cubic centimeter.
Page 411 - The minimum requirements for tensile strength for briquettes one inch square in section shall be within the following limits, and shall show no retrogression in strength within the periods specified : Age. Neat Cement. . Strength. 24 hours in moist air 175 Ibs.
Page 426 - This kind of finish is dangerous on sandstone, as experience has shown that sandstone thus treated is very apt to scale. In dressing limestone which is to have a bush-hammered finish the usual sequence of operation is (1) rough-pointing, (2) tooth-axing, and (3) bush-hammering.
Page 499 - ... firmly. The projecting end of the test specimen is then broken off by means of a hammer, a number of light blows being used, and the bending being away from the groove. The specimen is broken at the other two grooves in the same way. The object of this treatment is to open and render visible to the eye any seams due to failure to weld up, or to foreign interposed matter or cavities due to gas bubbles in the ingot.
Page 409 - The cement shall be stored in such a manner as to permit easy access for proper inspection and identification of each shipment.
Page 498 - The cold bending test shall be made on the material in the condition in which it is to be used, and prior to the quenched bending test the specimen shall be heated to a light cherry red, as seen in the dark, and quenched in water, the temperature of which is between 80° and 90° Fahrenheit.
Page 412 - The cement shall not acquire its initial set in less than forty-five minutes and shall acquire its final set in ten hours. The pats made to test the soundness may be used in determining the time of setting. The cement is considered to have acquired its initial set when the pat will bear, without being...
Page 424 - CUT STONES. This class covers all squared stones with smoothly dressed beds and joints. As a rule, all the edges of cut stones are drafted, and between the drafts the stone is smoothly dressed. The face, however, is often left rough where the construction is massive.
Page 411 - One Part Cement, Three Parts Sand. 7 days (1 day in moist air, 6 days in water) 150-200 " 28 days (1 day in moist air, 27 days in water) 200-300
Page 499 - The rail shall be placed head upwards on the supports, and the various sections shall be subjected to the following impact tests under a free falling weight...