Furnish/Install a 66′ diameter circular King Pile earth retention system (ERS) to support a 39’ excavation
Alternating W18 x 130 steel king piles interlocking with PZ 27 x 55′ long
Four (4) levels of internal concrete ring bracing
Furnish and install two (2) each three sided sheet pile cofferdams internally braced
Furnished 100 lft of cantilevered steel sheet piling
34 each 12hp53 piles x 72.5′ long h-piles driven in a 39′ excavation
Form/pour 4′ thick tremie mat in the bottom of the circular cell

Furnish/Install a 66′ diameter circular King Pile earth retention system (ERS) to support a 39’ excavation
Alternating W18 x 130 steel king piles interlocking with PZ 27 x 55′ long
Four (4) levels of internal concrete ring bracing
Furnish and install two (2) each three sided sheet pile cofferdams internally braced
Furnished 100 lft of cantilevered steel sheet piling
34 each 12hp53 piles x 72.5′ long h-piles driven in a 39′ excavation
Form/pour 4′ thick tremie mat in the bottom of the circular cell