Concrete and Reinforced Concrete: A Condensed Practical Treatise on the Problems of Concrete Construction, Including Cement Mixtures, Tests, Beam and Slab Design, Construction Work, Retaining Walls, Etc |
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Concrete and Reinforced Concrete: A Condensed Practical Treatise on the ... Walter Loring Webb No preview available - 2019 |
Common terms and phrases
12 inches amount arch Assume barrel beam bending blocks bond adhesion bottom broken stone cent center of gravity cinder concrete compression compressive stress computed concrete piles construction cost counterforts crete cubic feet cubic foot cubic yard dead load deformed bars depth designed Diagram diameter engineers equal Equation floor forms girder gravel horizontal inches on centers inches thick inches wide layer lineal live load machine masonry material method mixed mixer mixture modulus of elasticity mortar neutral axis percentage of steel placed plain bars plank Portland cement pounds per square pressure proportions rammed ratio reinforced concrete retaining walls road roller round bars sand sewers shearing stresses shown in Fig shows side spaced span square foot square inch stirrups stone concrete strength surface T-beam Table tensile tensile strength tension tests tion total load usually vertical voids waterproofing weight width
Popular passages
Page 4 - The cement shall be stored in such a manner as to permit easy access for proper inspection and identification of each shipment. 5. Every facility shall be provided by the contractor and a period of at least twelve days allowed for the inspection and necessary tests.
Page 5 - Ibs. 7 days (1 day in moist air, 6 days in water) 150 " 28 days (1 day in moist air, 27 days in water) . 250 " One Part Cement, Three Parts Standard Ottawa Sand.
Page 4 - This term shall be applied to the finely pulverized product resulting from the calcination of an argillaceous limestone at a temperature only sufficient to drive off the carbonic acid gas.
Page 6 - These pats, to satisfactorily pass the requirements, shall remain firm and hard and show no signs of distortion, checking, cracking, or disintegrating.
Page 4 - All tests shall be made in accordance with the methods proposed by the Committee on Uniform Tests of Cement...
Page 3 - Great care should be exercised to maintain the test pieces under as uniform conditions as possible. A sudden change or wide range of temperature in the room in which the tests are made, a very dry or humid atmosphere, and other irregularities vitally affect the rate of setting.
Page 6 - Another pat is kept in water maintained as near 70° F. as practicable, and observed at intervals for at least 28 days.
Page 4 - All cement shall be inspected. 2. Cement may be inspected either at the place of manufacture or on the work. 3. In order to allow ample time for inspecting and testing, the cement should be stored in a suitable weather-tight building having the floor properly blocked or raised from the ground. 4. The cement shall be stored in such a manner as to permit easy access for proper inspection and identification of each shipment.
Page 5 - It shall leave by weight a residue of not more than 8 per cent on the No. 100, and not more than 25 per cent on the No. 200 sieve.
Page 85 - Therefore, if a block of concrete were held at the ends with absolute rigidity, while its temperature was lowered about 12 degrees, the stress developed in the concrete would be very nearly, if not quite, at the rupture point. Fortunately, the ends will not usually be held with such rigidity; but, nevertheless, it does generally happen that, unless the entire mass of concrete is permitted to expand and contract freely so that the temperature stresses are small, the stresses will usually localize...