. The street railway review . s-o-^ 9-^ COLUMN FOOTING. through the roadbed above is delivered to the middle of plates,whence it escapes throug:h holes punched two or three feet apartalong the center of the plates. These holes punched in the plateare specially made with a drip point about one-eighth inch in lengthon the lower side so that alkaline water will not run along theunderside of the deck and destroy the paint. .-\t the points wherethe steel floor joins with the cross floor beams small angles, called. CROSS SECTION AND IF ELEV.\TED STRLXTLRE. by -5.^ in. thick and f
. The street railway review . s-o-^ 9-^ COLUMN FOOTING. through the roadbed above is delivered to the middle of plates,whence it escapes throug:h holes punched two or three feet apartalong the center of the plates. These holes punched in the plateare specially made with a drip point about one-eighth inch in lengthon the lower side so that alkaline water will not run along theunderside of the deck and destroy the paint. .-\t the points wherethe steel floor joins with the cross floor beams small angles, called. CROSS SECTION AND IF ELEV.\TED STRLXTLRE. by -5.^ in. thick and four angles 6 x 3A x A in. in size. The lowerchord is formed of two 6 x 6 x A-m. angles and two cover plates14 X 5^ in. The vertical and diagonal members are angle sectionsriveted to -^^-in. gussets which are in turn riveted to the upper andlower members of the girder. drip angles, are riveted onto the lower side of the troughs, so thatany leakage which may occur at these junctions will fall off the struc-ture from the drip angles and not run along under the steel joints are provided in the longitudinal steel work of thestructure at points from 150 to 200 ft. apart. At expansion joints Skii. 15. l>S\ RliVIEW 525 ill tlic sIriKluic slicl il^iiii, •.iiiMi!! Ilic ciiiicrclc, lliis concrete bciiiBaiiehorcd to the vertical surface. Tlie stcc! deck siippurls a floor of c-oncrel., rrinforci-rl willi sicilfabric. Ilie upper surface of this concrete has a granolithic sur-face and
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
