. Railroad construction. Theory and practice . ^If the tracks were originally straight, they may be shoved over bythe trackmen, the shifting gradually running out at about 100feet each side of the stand-pipe. If the tracks were originallycurved, a slight change in radius w^ill suffice to give the necessaryextra distance between the tracks. BUILDINGS. 286. Station platforms. These are most commonly made ofplanks at minor stations. Concrete is used in better-class work,also paving brick. An estimate of the cost of a platform of pavingbrick laid at Topeka, Kan., was $ per 100 square feet when
. Railroad construction. Theory and practice . ^If the tracks were originally straight, they may be shoved over bythe trackmen, the shifting gradually running out at about 100feet each side of the stand-pipe. If the tracks were originallycurved, a slight change in radius w^ill suffice to give the necessaryextra distance between the tracks. BUILDINGS. 286. Station platforms. These are most commonly made ofplanks at minor stations. Concrete is used in better-class work,also paving brick. An estimate of the cost of a platform of pavingbrick laid at Topeka, Kan., was $ per 100 square feet when § 2S6. MISCELLANEOUS STRUCTURES AND BUILDINGS. 305 laid flat and $ per 100 square feet when laid on edge. Thecurbing cost 36 cents per linear foot. Cinders, curbed by timbers >>-. Fig. 161.— stone, bound by iron rods, make a cheap and fairly durableplatform, but in wet weather the cinders will be tracked into 306 RAILROAD CONSTRUCTION. § 287. the stations and cars. Three inches of crushed stone on acinder foundation is considered to be still better, after it is oncethoroughly packed, than a cinder surface. Elevation.—The elevation of the platform with respect tothe rail has long been a fruitful source of discussion. Some roadsmake the platforms on a level with the top of the rail, others3 above, others still higher. As a matter of convenience tothe passengers, the majority find it easier to enter the car froma high platform, but experience proves that accidents are morenumerous with the higher platforms, unless steps are discardedaltogether and the cars are entered from level platforms, as isdone on elevated roads. As a railroad must generally paydamages to the stumbling passenger, they prefer to build thelower platform. Convenience requires t
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