. Construction : a journal for the architectural engineering and contracting interests of Canada . .\0. II. Tin: 114-l(lliT ClKllKk I ARKIII) OUT BY DERRICK CAR. CONSTRUCTION 481. III.—THE 114-i-iioT r,iKnp;R heinc, ixto Io^iTinN. Span No 24 IS seventy-five feet over all, and asthe extreme length of the booms on the derrick isonly sixty feet, it may be seen that bent No. 23 couldnot be placed dnectly with the car. Consequentlya more roundabout method of erection had to beused. In this case the bent was assembled andbolted up complete as in the previous case and themain fall lines we
. Construction : a journal for the architectural engineering and contracting interests of Canada . .\0. II. Tin: 114-l(lliT ClKllKk I ARKIII) OUT BY DERRICK CAR. CONSTRUCTION 481. III.—THE 114-i-iioT r,iKnp;R heinc, ixto Io^iTinN. Span No 24 IS seventy-five feet over all, and asthe extreme length of the booms on the derrick isonly sixty feet, it may be seen that bent No. 23 couldnot be placed dnectly with the car. Consequentlya more roundabout method of erection had to beused. In this case the bent was assembled andbolted up complete as in the previous case and themain fall lines were attached just above the centreof gravity of the bent so that it was slightly heavyon the bottom end. Extra lines and tackle were ledfrom the booms to the lower end of the bent to main-tain it in a horizontal position until the car wasbrought forward and the bent swung clear of thetrestle, after which the lower end of the bent wasallowed to drop down, and as the car came forwardthis lower end of the bent was swung out until it satat the proper place on the pier. The bent was then tilted up as far as possible by raising the load line. This probably brought thebent to wi
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Keywords: ., bo, bookcentury1900, booksubjectarchitecture, booksubjectbuilding
