A Treatise on Masonry ConstructionJ. Wiley & sons, 1909 - 745 pagina's |
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Overige edities - Alles bekijken
Veelvoorkomende woorden en zinsdelen
abutment amount angle angle of repose arch ring ashlar barrel beam brick bridge briquettes broken stone building caisson cement mortar cent of voids center of pressure clay coffer-dam column compression compressive strength construction cost cross section crushing strength cubic foot cubic yard culvert cylinder depth determined diameter driving earth employed Engineering equation equilibrium polygon extrados face factor of safety feet foot formula foundation friction gives grains gravel hence horizontal inches increase intrados joints less lime limestone line of resistance live load masonry material maximum method mixed natural cement pier pipe plain concrete portland cement pounds pressure proportion reinforced concrete retaining wall rods rubble sand sandstone shows side sieve slaking soil span spandrel specific gravity square stability steel stress structure surface Table temperature tensile strength thickness thrust timber usually varies vertical volume voussoir weight
Populaire passages
Pagina 723 - 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 twenty-four hours.
Pagina 65 - Method. — As a method to be followed for the analysis of cement, that proposed by the Committee on Uniformity in the analysis of Materials for the Portland Cement Industry, of the New York Section of the Society for Chemical Industry, and published in the Journal of the Society for January 15, 1902, is recommended.
Pagina 71 - ... water shall be poured ; the material on the outer edge shall be turned into the crater by the aid of a trowel.
Pagina 723 - 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. Neat Cement. . Strength. 24 hours in moist air 175 Ibs.
Pagina 722 - 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.
Pagina 723 - FINENESS. 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.
Pagina 64 - SIGNIFICANCE. — Chemical analysis may render valuable service in the detection of adulteration of cement with considerable amounts of inert material, such as slag or ground limestone. It is of use, also, in determining whether certain constituents, believed to be harmful when in excess of a certain percentage, as magnesia and sulphuric anhydride, are present in inadmissible proportions.
Pagina 722 - 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.
Pagina 722 - 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.
Pagina 723 - 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% has been made subsequent to calcination.