The Washington Bridge Over the Harlem River, at 181st Street, New York City: A Description of Its Construction, Volumen1L. von Rosenberg, 1889 - 90 páginas |
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Página 6
... TESTS OF MATERIALS . Tests of Cement , " Stone , Concrete , " " 44 " Open - Hearth Steel Plates ( Spang Steel and Iron Co. ) , Steel ( Union Iron Mills ) , Steel ( Spang Steel and Iron Co. ) , 34 - inch Round Steel ( Carnegie , Phipps ...
... TESTS OF MATERIALS . Tests of Cement , " Stone , Concrete , " " 44 " Open - Hearth Steel Plates ( Spang Steel and Iron Co. ) , Steel ( Union Iron Mills ) , Steel ( Spang Steel and Iron Co. ) , 34 - inch Round Steel ( Carnegie , Phipps ...
Página 18
... tests for tensile strength of pure cement in twenty - four hours , ranging from 80 lbs . to the square inch to over 130 lbs . , the average of over 2,000 tests being 96 lbs . tensile strain to the square inch . Small quantities of other ...
... tests for tensile strength of pure cement in twenty - four hours , ranging from 80 lbs . to the square inch to over 130 lbs . , the average of over 2,000 tests being 96 lbs . tensile strain to the square inch . Small quantities of other ...
Página 23
... tested with twenty - four and twenty - six tons to the square foot , showed no signs of yielding . The excavations were then suspended , and a bed of concrete six feet in thick- ness , made with Portland cement , was laid over the ...
... tested with twenty - four and twenty - six tons to the square foot , showed no signs of yielding . The excavations were then suspended , and a bed of concrete six feet in thick- ness , made with Portland cement , was laid over the ...
Página 30
... tests , as described in the Specifica- tions , p . 73 . A few of the tests are given in the accompanying tables , showing the form of inspector's return and some of the results of the tests . The iron was manufactured by the Passaic ...
... tests , as described in the Specifica- tions , p . 73 . A few of the tests are given in the accompanying tables , showing the form of inspector's return and some of the results of the tests . The iron was manufactured by the Passaic ...
Página 35
... tested , etc. , etc. , and in March , 1889 , the bridge was accepted from the contractors , and the final payments made to them . The entire cost up to that date was as follows : Paid to Contractors , Engineering and Superintendence ...
... tested , etc. , etc. , and in March , 1889 , the bridge was accepted from the contractors , and the final payments made to them . The entire cost up to that date was as follows : Paid to Contractors , Engineering and Superintendence ...
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Términos y frases comunes
2d test ANGLES arch ribs beams beds BENDING blue-stone bolts Bowlders buckle plates Building caisson CENTER LINE certificate Chief Engineer City coal-tar Commissioners compression concrete construction contract Contractors cornice cross Croton Aqueduct cubic yard cup Partial cup DEAD LOAD depth diameter EAST ELEVATION erection excavation Extrados face feet FLANGE floor floor-beams foundation of piers furnished GEORGE W. G. FERRIS Gneiss granite Granite in piers Gravel gutter half inches Hard Rock HARLEM RIVER BRIDGE HOIST Inspector Intrados joints laid LAND SPAN lineal foot MANUFACTURERS masonry material mean high water METAL ARCHES mortar MOVING LOAD MYLES TIERNEY parapet Passaic Rolling Mill pavement pipes plans Portland cement posts pounds per square rivets roadway Rosendale ROUND ROD Sand SCALE SECTION SEGMENT Shist side silky Silt Soft Rock square inch steel arches Street surface temperature THEODORE COOPER thereof thickness tons UNION IRON vertical WASHINGTON BRIDGE WEBPLATE width York ΙΟ
Pasajes populares
Página 70 - Fahrenheit, must stand bending in a press to a curve of which the inner radius is one and a half times the thickness of the plates tested.
Página 70 - At least one sample in three must bend 180 degrees to this curve without cracking. When nicked on one side, and bent by a blow from a sledge, the fracture must be nearly all fibrous, showing but few crystalline specks. 109. Specimens from angle, plate...
Página 52 - The aqueduct commissioners, provided for and holding office under and pursuant to the provisions of an act of the legislature of the state of New York, entitled "An act to provide new reservoirs, dams and a new aqueduct with the appurtenances thereto, for the purpose of supplying the city of New York with an increased supply of pure and wholesome water...
Página 55 - All loss or damage arising out of the nature of the work to be done under this agreement, or from any unforeseen obstructions or difficulties which may be encountered in the prosecution of the same...
Página 59 - Sciences hath hereunto caused its corporate seal to be affixed and these presents to be subscribed by its President, this sixth day of May, in the year one thousand eight hundred and eighty-four.
Página 75 - The pulverized carbonate of lime, granite, or quartz while cold shall be mixed with the hot sand in the required proportions, and then mixed with the asphaltic cement, at the required temperature and in the proper proportion, in a suitable apparatus, so as to effect a thoroughly homogeneous mixture.
Página 59 - Polir, to me known and known to me to be one of the individuals described in and who executed the foregoing instrument and acknowledged to me that he executed the same.
Página 70 - The steel must be uniform in character for each specified kind. The finished bars, plates and shapes must be free from cracks on the faces or corners, and have a clean, smooth finish. No work shall be put upon any steel at or near the blue temperature or between that of boiling water and of ignition of hard wood sawdust.
Página 56 - ... improper materials used in its construction, or by or on account of any act or omission of the said contractor or his agents...
Página 52 - The aqueduct commissioners, provided for and •toSSi!!" holding office under and pursuant to the provisions of an act of the legislature of the state of New York, entitled "An act to provide new reservoirs, dams and a new aqueduct with the appurtenances thereto, for the purpose of supplying the city of New York...