. Canadian engineer. d then i ^/^inches of asphalt mastic. The building paper was usedin order to avoid injury to the waterproofing by the hotmastic. As stated before, all the stringers, floor beams, side-walk brackets and a portion of the girders are encased inconcrete. Square twisted steel was used as reinforcementand No. 2-13-15 expanded metal for beam 7 shows the cross-section of the floor. The hollowterra-cotta tile shown are used for the purpose of decreas-ing the dead load on the girders. The load taken off thecentre girder by this means amounts to 7 square inchesof flange
. Canadian engineer. d then i ^/^inches of asphalt mastic. The building paper was usedin order to avoid injury to the waterproofing by the hotmastic. As stated before, all the stringers, floor beams, side-walk brackets and a portion of the girders are encased inconcrete. Square twisted steel was used as reinforcementand No. 2-13-15 expanded metal for beam 7 shows the cross-section of the floor. The hollowterra-cotta tile shown are used for the purpose of decreas-ing the dead load on the girders. The load taken off thecentre girder by this means amounts to 7 square inchesof flange section which is quite an item in a heavy cost of this tile work, in place, is slightly cheaperthan concrete. The total dead load taken off the bridgeby this means is estimated at 200,000 lbs. Two factors governed the design of the abutments ;first, bedrock is 13 feet below base of rail, and second,the main Garrison Creek storm overflow sew-er runs underthe abutment. This sewer is 12 feet wide outside and. r^ Fig. 7.—Cross-section of Floor ^ —TPh 3fe /y
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidcanadianengineer30toro
