FIELD: railway equipment.
SUBSTANCE: proposed built-up retainers consists of sealing and load-bearing parts, the slabs being arranged to transfer main load through retainers load-bearing parts onto rails. Reinforced concrete slab one face surface has lengthwise trapezoidal ledge, its other face surface being furnished with mating recess. Said ledge and recess make a lock.
EFFECT: joint operation of cover with track skeleton, optimum distribution of design static and dynamic loads between cover and tramroad.
28 cl, 19 dwg
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