Easterly Tunnel Dewatering Pump Station
Easterly Tunnel Dewatering Pump Station
Easterly Tunnel Dewatering Pump Station
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CavernHeight68 FtPrimary Shaft Support in OverburdenSteel Liner Plate and Steel Ribs on 4” COCSpacing.Primary Shaft Support in RockRock Dowels in 6’ x 6’ Pattern with 2” Thick Layer ofShotcrete (WWM or Fiber-Reinforced) . 4” ThickShotcrete for 20’ Zone above Cavern Roof.Cavern and Access Shaft Dimensions39