. Railway mechanical engineer . tween Minneapolis and Milwaukee awaiting dis-position and many more are coming in. Reinforced Concrete Gondola Car New Aggregate Used; Design Incorporates SteelCenter Sills with Reinforced Concrete Body AN innovation in railway equipment is a reinforcedconcrete car of the gondola type, invented and de-signed by Joseph B. Strauss, , president of theStrauss Bascule Bridge Company and recently Ijuilt by theR. F. Conway Company, Chicago. The plans for the car weredrawn up several years ago and patents were secured cover-ing the important features of the design.
. Railway mechanical engineer . tween Minneapolis and Milwaukee awaiting dis-position and many more are coming in. Reinforced Concrete Gondola Car New Aggregate Used; Design Incorporates SteelCenter Sills with Reinforced Concrete Body AN innovation in railway equipment is a reinforcedconcrete car of the gondola type, invented and de-signed by Joseph B. Strauss, , president of theStrauss Bascule Bridge Company and recently Ijuilt by theR. F. Conway Company, Chicago. The plans for the car weredrawn up several years ago and patents were secured cover-ing the important features of the design. The actual con- to the underframe in such a manner that the buffing andpulling stresses are distributed throughout the car body. Thecar was designed for a capacity of 100,000 lb. plus the usual10 per cent overload. The end load was assumed at 200,000lb. with an allowance of 25 per cent for impact, equivalentto an end load of 250,000 lb. The unit stresses in the steelwere limited to 16,000 lb. per sq. in., and in the concrete to. The Christening of the Worlds First Concrete Freight Car struction was started during the w-ar when it was thoughtthat it might be possible to relieve the car shortage materiallyby developing concrete construction. The fundamental feature of the design is a steel skeletonbod\- mounted upon the standard center sills and bolstersof the U. S. R. A. 40-ft., 50-ton gondola car. Concretewalls and floors are contained within the skeleton steel frameand together with the reinforcement in the floor are connected 1,000 lb. per sq. in. The gondola type was chosen for thisexperimental concrete car because equipment of this typeis subjected to the severest handling. Dumping devices wereomitted merely to simplify the construction, liut this featurecan be incorporated in such cars without any difficultv. The car has an over-all length of 41 ft. 6>.> in., andover-all width of 10 ft. 2s in., with sides 4 ft. 10>< in. steel members of the underframe
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
