The top of a concrete tunnel slab junction measures one foot six inches by two feet zero inches in cross-section. The member contains four number eight longitudinal bars and four number nine longitudinal bars surrounded by closed steel stirrups. The top of the tunnel slab intersects the structural concrete beam section at the indicated elevation.
1' - 6" 2' - 0" TOP OF TUNNEL SLAB 4-#9 4-#8 1' - 6" 2' - 0" TOP OF TUNNEL SLAB 4-#9 4-#8
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