Text-book on the Strength of MaterialsGinn, 1911 - 372 Seiten |
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amount applied assumed assumption bearing power bending moment brick calculated cast iron cement cent center of gravity circular column compressive strength concentrated load Consequently cross section cylinder deflection deformation denote determine diameter distance Dull silky elastic curve elastic limit ends equal equation equilibrium polygon Euler's formula external factor of safety fiber flexure formula given gravity axis Hooke's law horizontal inches joint left support length linear arch machine material maximum stress modulus of elasticity moment of inertia neutral axis normal stress obtained ordinates P₁ P₂ parallel perpendicular pine plane plate pressure Problem R₁ R₂ radius reactions resultant rivet shaft shearing stress shown in Fig specimen steel tensile strength tensile stress tension test piece theorem thickness timber tion torsion tubes ultimate strength uniform load unit load unit stress vertical wall Watertown Arsenal whence wire wrought iron zero ΕΙ
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Seite 305 - 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. These pats, to satisfactorily pass the requirements, shall remain firm and hard and show no signs of distortion, checking, cracking, or disintegrating.
Seite 304 - 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 24 hours.
Seite 304 - 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.
Seite 349 - ... loose, or rotten knots and defects that materially impair its strength, well manufactured, and suitable for good, substantial constructional purposes. Will allow slight variations in sawing, sound knots, pitch pockets, and sap on corners, one-third the width and one-half the thickness or its equivalent.
Seite 303 - It shall develop initial set in not less than ten minutes, and hard set in not less than thirty minutes, nor more than three hours.
Seite 295 - ... or less in thickness the test specimen shall be of the same thickness as that of the finished material from which it is cut, but for material more than three-fourths inch (3/4") thick the bending test specimen may be onehalf inch (1/2") thick: Rivet rounds shall be tested of full size as rolled. (d). Rivet steel shall bend cold 180° flat on itself without fracture on the outside of the bent portion.
Seite 295 - Rivet steel shall bend cold 180° flat on itself without fracture on the outside of the bent portion. (e) Medium steel shall bend cold 180°...
Seite 304 - Specific Gravity. The specific gravity of the cement, thoroughly dried at 100 degrees C., shall be not less than 3.10.
Seite 304 - 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.