American Civil Engineers' Pocket BookJohn Wiley & Sons, Incorporated, 1916 - 1591 pages |
Expressions et termes fréquents
altitude average axis azimuth beam bending bending moment brick caisson cars cast iron cement cents columns compression computed concrete contours cost cross-section culvert curve cylinder determined diameter distance elastic limit elevation elongation engine equal error feet foot formula frog grade gravel horizontal inches instrument joint lb per sq length lime load located locomotive masonry material maximum means measured meridian method miles miles per hour modulus modulus of elasticity mortar percent piles plane plate pounds pressure radius rail railroad reinforced resistance right ascension sand screw shearing shearing stress short tons side slope specimen sq ft square standard station steel stone surface survey tangent tape telescope temperature tensile strength test pieces thickness thru tons track transit triangle unit stress usually values velocity vernier vertical walls weight width wire wrought iron
Fréquemment cités
Page 408 - Every facility shall be provided by the contractor and a period of at least twelve days allowed for the inspection and necessary tests.
Page 400 - 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 409 - Definition. 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 707 - The rivet pitch shall never be less than three diameters of the rivet. At the ends of compression members it shall not exceed four diameters of the rivet for a length equal to the width of the members.
Page 408 - The cement shall be stored in such a manner as to permit easy access for proper inspection and identification of each shipment, and in a suitable weather-tight building which will protect the cement from dampness.
Page 404 - The thoroughly dried and coarsely screened sample is weighed and placed on the No. 200 sieve, which, with pan and cover attached, is held in one hand in a slightly inclined position, and moved forward and backward, at the same time striking the side gently with the palm of the other hand, at the rate of about 200 strokes per minute. The operation is continued until not more than one-tenth of 1 per cent.
Page 410 - 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.
Page 410 - Failure to meet the requirements at this time should be considered sufficient cause for rejection, although in the present state of our knowledge it cannot be said that such failure necessarily indicates...
Page 404 - ... taking care that the cement does not adhere to the inside of the flask above the liquid and to free the cement from air by rolling the flask in an inclined position. After all the cement is introduced, the level of the liquid will rise to some division of the graduated neck; the difference between readings is the. volume displaced by 64 g.
Page 72 - The public lands shall be divided by north and south lines run according to the true meridian, and by others crossing them at right angles, so as to form townships of six miles square...