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Page 263 - If stepped-up footing of brick are used in place of stone, above the concrete, the offsets, if laid in single courses, shall each not exceed one and one-half inches, or if laid in double courses, then each shall not exceed three inches, offsetting the first course of brickwork, back one-half the thickness of the concrete base, so as to properly distribute the load to be imposed thereon.
Page 410 - The areas of circles are to each other as the squares of their diameters.
Page 389 - States is in theory, that of a pendulum vibrating seconds at the level of the sea, in the latitude of London, in a vacuum, with Fahrenheit's thermometer at 62°. The length of such a pendulum is supposed to be divided into 39.1393 equal parts called inches, and 36 of these inches were adopted as the standard yard of both countries.
Page 194 - All rivet iron must be tough and soft, and pieces of the full diameter of the rivet must be capable of bending cold until the sides are in close contact, without sign of fracture on the convex side of the curve.
Page 542 - Together with Directions for Estimating the Cost of Earthwork. By John C. Trautwine, CE Ninth edition, revised and enlarged by John C.
Page 254 - For the best work it is specified that the brick shall be laid with a -shove-joint,- that is, that the brick shall first be laid so as to project over the one below, and be pressed into the mortar, and then be shoved into its final position. Bricks should be laid in full beds of mortar, filling end and side joints in one operation. This operation is simple and easy with skillful masons, if they will do it, but it requires persistence to get it accomplished.
Page 265 - In all brick walls every sixth course shall be a heading course, except where walls are faced with brick in running bond, in which latter case every sixth course shall be bonded into the backing by cutting the course of the face brick and putting in diagonal headers behind the same, or by splitting the face brick in half and backing the same with a continuous row of headers.
Page 248 - Dissolve 1 pound of salt in 18 gallons of water when the temperature is at 32° F., and add 1 ounce of salt for each degree of lower temperature. The use of salt, and more especially of sea-water, in mortar is objectionable in exposed walls, since the accompanying salts usually produce efflorescence.
Page 542 - Of mensuration, trigonometry, surveying, hydraulics, hydrostatics, instruments and their adjustments, strength of materials, masonry, principles of wooden and iron roof and bridge trusses, stone bridges and culverts, trestles, pillars, suspension bridges, dams, railroads, turnouts, turning platforms, water stations, cost of earthwork, foundations, retaining walls, etc.