Radford's Cyclopedia of Construction: Carpentry, Building and Architecture, Based on the Practical Experience of a Large Staff of Experts in Actual Construction Work, Volume 5William A. Radford, Alfred Sidney Johnson Radford architectural Company, 1909 - Architecture |
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Common terms and phrases
action adapted amount applied asphalt automatic barrels batch Block Machine brick briquettes British thermal unit bucket building cent chemical claimed coarser coating compound concrete blocks CONCRETE MIXER construction crete crushed Crusher cubic feet cubic foot cubic yard damp-proofing density discharge drum dumped Engineering filled floor freezing hardening heat hopper hydrated lime ingredients interior Koehring layer limestone MANUFACTURE OF CONCRETE mass material measuring Medium Medium ment method mineral wool mixer mixing mortar moulded natural cement neat cement operation ordinary particles percentage placed plaster Plate Portland cement pounds Pozzuolana practical pressure primer paint quantity reinforced concrete revolving Rich to Medium samples sand and cement sand and gravel screen shovel shown sieve slag specific gravity square steam steel stone or gravel structure surface Table tamping tank temperature tensile strength tests tile tion ture varying voids volume walls waterproofing weight
Popular passages
Page 117 - The moulds should be filled at once, the material pressed in firmly with the fingers and smoothed off with a trowel without ramming; the material should be heaped up on the upper surface of the...
Page 121 - Should the pat leave the plate, distortion may be detected best with a straightedge applied to the surface which was in contact with the plate.
Page 118 - Care should be observed in centering the briquettes in the testing machine, as cross-strains, produced by improper centering, tend to lower the breaking strength. The load should not be applied too suddenly, as it may produce vibration, the shock from which often breaks the briquette before the ultimate strength is reached. Care must be taken that the clips and the sides of the briquette be clean and free from grains of sand or dirt, which would prevent a good bearing.
Page 57 - This term is applied to the finely pulverized product resulting from the calcination to incipient fusion of an intimate mixture of properly proportioned argillaceous and calcareous materials, and to which no addition greater than 3 per cent has been made subsequent to calcination.
Page 124 - FINENESS. It shall leave by weight a residue of not more than 10 per cent on the No. 100, and 30 per cent on the No. 200 sieve.
Page 336 - To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet by .434. Approximately, we say that every foot elevation is equal to % Ib. pressure per square inch ; this allows for ordinary friction. To find the diameter of a pump cylinder...
Page 120 - ... which tend to destroy the strength and durability of a cement. As it is highly essential to determine such qualities at once, tests of this character are for the most part made in a very short time, and are known, therefore, as accelerated tests. Failure is revealed by cracking, checking, swelling or disintegration, or all of these phenomena. A cement which remains perfectly sound is said to
Page 110 - ... (10.58 oz.). The rod, which can be held in any desired position by a screw (F) carries an indicator, which moves over a scale (graduated to centimeters) attached to the frame (K). The paste is held by a conical, hard-rubber ring (I), 7 cm.
Page 120 - The latter should be regarded as a precautionary test only, and not infallible. So many conditions enter into the making and interpreting of it that it should be used with extreme care.
Page 108 - Significance. — It is generally accepted that the coarser particles in cement are practically inert, and it is only the extremely fine powder that possesses adhesive or cementing qualities. The more finely cement is pulverized, all other conditions being the same, the more sand it will carry and produce a mortar of a given strength.