124 



STEEL HIGHWAY BRIDGES. 



CHAP. III. 



NOTE .fair/forcing bars to be spaced and @ 

 wired in position before concrete ispoured. 



;i bar over each Floorbeam. .1* ,* 



-3 per panel 



t # 



lOWWtmAL 5iort OF FLOOR. ^ i 



34PI.;1 '\spaced/8c.toc. 

 vw .. 



* f 



/ Weep Me with perforated coyer 

 L 



Standard Specifications 

 * 



(L?A{?. c .-f. r . u .tt?- 5 



ASSUMED LOAD/NO HALFSECTIOH 

 DeadMO'perft. of truss. 

 Live,9Q*pers<j.ft.ofnadwy 

 or engine as per diagram. 

 Kaph. /H \ji 



JS3|OXi|SMJ0 /$&''' &W /J^l" ff^c&clresses \ (Bradebare 

 WfW'Wm T " '*<WM Cast Iron Masonry PI. l?xttl ! /r ** omittedon spans 



Qajfiffi. /u \K/& lessthanlf!) 



al Details 



CAST lRon5Hocs- FIXED Eno. 1 



ConcreteSldb Floor 

 lowd Highway Commission 



FIG. 1 8. Low TRUSS SPAN WITHOUT STRINGERS. 



The depths and number of panels in Wisconsin Highway Commission low truss bridges with 

 joists are as follows: 35 ft. span, 3 panels, \\ ft. deep; 40 ft. span, 3 panels, 5 ft. deep; 45 ft. span, 



3 panels, 5! ft. deep; 50 ft. span, 4 panels, 5^ ft. deep; 55 ft. span, 4 panels, 6 ft. deep; 60 ft. span, 



4 panels, 6| ft. deep; 65 ft. span, 5 panels, 7 ft. deep; 70 ft. span, 5 panels, 75 ft. deep; 75 ft. span, 



5 panels, 8 ft. deep; 80 ft. span, 5 panels, 8| ft. deep; 85 ft. span, 6 panels, 9 ft. deep. 



