Cyclopedia of Architecture, Carpentry and Building: Masonry and concreting materials. Stone masonry and plain concrete construction. Reinforced concreteAmerican Technical Society, 1909 |
Expressions et termes fréquents
12 inches abutment amount angle arch rib assumed beam blocks bottom brick bridge building caisson cent center of gravity center of pressure cinder cofferdam column compression computed condition of loading considered constructed cost crete crushing cubic foot cubic yard culvert depth designed determined diameter distance draw elastic limit elasticity engine equal Equation extrados face factor of safety floor force diagram forms foundation girders greater hoisting horizontal I-beams inch square inches thick intersects intrados joint length lime line of pressure live load load line masonry material method mixed mixer mixture moment of inertia mortar moulded neutral axis parallel pier piles placed plank Portland cement pounds per square proportion reinforced concrete reinforced-concrete resultant retaining wall sand shear shown in Fig side slab soil span square foot square inch stress structure subsoil summation surface temperature tension tests timber transverse unit-pressure usually vertical voussoir weight width
Fréquemment cités
Page 45 - 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.
Page 449 - REVIEW QUESTIONS. PRACTICAL TEST QUESTIONS. In the foregoing sections of this Cyclopedia numerous illustrative examples are worked out in detail in order to show the application of the various methods and principles. Accompanying these are examples for practice which will aid the reader in fixing the principles -in mind. In the following pages are given a larg°...
Page 399 - Since the product of the means equals the product of the extremes, we find that (gc + af) X be = ed X a'f'g'c'; but % (gc + af) X be = the combined area of the two triangles, and therefore the line a'f'g'c...
Page 45 - 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 40 - The sand and cement should be thoroughly mixed dry. The mixing should be done on some non-absorbing surface, preferably plate glass. If the mixing must be done on an absorbing surface it should be thoroughly dampened prior to use. 56.
Page 45 - A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for five hours. 23. These pats, to satisfactorily pass the requirements, shall remain firm and hard, and show no signs of distortion, checking, cracking, or disintegrating.
Page 42 - Strength. about 7J cm. (2.95 in.) in diameter, l\ cm. (0.49 in.) thick at the center, and tapering to a thin edge, should be made, upon a clean glass plate [about 10 cm. (3.94 in.) square], from cement paste of normal consistency. Normal Test. A pat is immersed in water maintained as near 21° Cent.
Page 45 - 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 33 - F.) and cooled to the temperature of the liquid, is gradually introduced through the funnel (B) [the stem of which extends into the flask to the top of the bulb (C) ] , until the upper mark (F) is reached.
Page 45 - These pats, to satisfactorily pass the requirements, shall remain firm and hard and show no signs of distortion, checking, cracking or disintegrating. SULPHURIC ACID AND MAGNESIA. The cement shall not contain more than 1.75 per cent of anhydrous sulphuric acid (SO3), nor more than 4 per cent of magnesia (MgO).