Los Angeles Subway Renovation Project

BBS1 Concrete Tie Sleeper: Permissible axle loads (25t); Maxinum speed (>160km/h); concretegrade (C50/60); Weight (560kg); Length (2600mm); Width (570mm); Height (233mm)

Ballasted turnout sleeper is mainly used for general routes and trans-regional welded rail track traffic, with a standard rail gauge of 1435 mm. It allows the maximum speed 120 Km/h, and applies to steel rails of 50 Kg/m or 60 Kg/m.

IIIQaD is applicable to a standard track gauge of 1435 mm that's used as bridge sleeper specialized for ballasted track, with radius ≥350 m of curve track and direct track. The steel rails of 60 Kg/m or 75 Kg/m can be used for this sleeper.

Generally, IIIa sleeper is suitable for the ballasted track with a standard rail gauge of 1435 mm. It's used for radius ≥300 m of curve track and direct track and applies to steel rails of 60 Kg/m or 75 Kg/m. The fastener matched is Type II elastic strip.