. Engineering and Contracting. the building. In 1907, when Mr. Opdycke and the writerexamined the tunnel, they noticed that severalrather large streams of water—evidently fromthe old stream shov/n on the maps—were pour-ing into it at this point. The examinationshowed that the building had settled consid-erably and was still settling, and the writerwas requested to design a system of under-pinning carried to rock. This he refused todo at that time, for fear of opening up a di-rect connection between the cylinders and thetunnel, thus endangering the entire building;but he recommended tying back
. Engineering and Contracting. the building. In 1907, when Mr. Opdycke and the writerexamined the tunnel, they noticed that severalrather large streams of water—evidently fromthe old stream shov/n on the maps—were pour-ing into it at this point. The examinationshowed that the building had settled consid-erably and was still settling, and the writerwas requested to design a system of under-pinning carried to rock. This he refused todo at that time, for fear of opening up a di-rect connection between the cylinders and thetunnel, thus endangering the entire building;but he recommended tying back the frontwall with rods, to prevent it from fallingaway from the remainder of the building. This was immediately done, as shown byFig. 2. Two 12-in. beams, about 41 ft. long,were placed vertically just east of the mainentrance on Thirty-third St., which was thepoint of greatest disturbance. These beamsextended from the areaway floor up to andslightly above the third floor. The tops of the ^^^^ Cambridge Euilding ^^^^^^^^S. I g Waldorf-Astoria Fig. 1—Approximate Cross-Section Showing Relative Location of Pennsylvania R. and the Cambridge Building. of the Waldorf. The cave-in had been back-filled, but the curb, the street, and the Cam-bridge Building had continued to settle. Thetendency of the whole building was to bulgetoward the north, as well as to settle verti-cally. The fact that an old stream ran under thesite of the Cambridge Building and the Wal-dorf-Astoria also aggravated matters, espe-cialy as the break in the tunnel was at or nearthis old stream. The foundations of the Wal-dorf-Astoria had been carried down to therock, but the east end of the CambridgeBuilding was founded on a spread footing ofconcrete and the west end on piles. When the Cambridge Building was remod-eled, in 1906, to convert it from a hotel intoan office building, these piles, which wereabout .30 ft. long and when driven had beencut off below the water line, were found to beslightly abo
Size: 1054px × 2372px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidengineeringcontr33chicuof
