Fish House Cove

Fish-House-CoveFish House Cove

Pennsauken, New Jersey

The original foundation design for the proposed timber walkway and platform in Fish House Cove, Pennsauken, NJ had proven to be unsuitable for the marshland. Design consisted of 12” diameter concrete filled caissons, once installed, began to rotate and settle. NJ Transit, site owner, wanted to abandon constructed caissons and use a new foundation system. W.J. Castle, P.E. & Associates, P.C. (CASTLE) was contracted to design and construct the new walkway foundation.

CASTLE performed an analysis of the site and developed a new walkway foundation system design. CASTLE designed a foundation system using approximately 100 1¾”-square solid-shaft Chance helical piles. A U-shaped steel bracket was attached to the top of each anchor which supports a timber cap beam. Two helical piles were used at each cap beam creating a bent system. Several existing caissons were utilized in locations were they had not previously failed.

In these locations, two caissons were placed on the outside and one Chance helical pile was installed in the center making up the bent. Helical shaft extensions with splice plates were added to the caissons extending up to the same height as the Chance helical piles, creating a level plane for the timber cap beams. Two ½”-diameter galvanized bolts were used for each cap beam connection. The new platform foundation design included adding one helical pile to the timber bents and an additional bent added where required to use two helical piles.

Once CASTLE received the approval from NJ Transit to proceed with the proposed walkway/platform design, Hydro-Marine Construction Co., Inc. (HYDRO) was utilized to complete the construction. HYDRO is the affiliate construction company to CASTLE and is a certified distributor and installer of Chance helical piles and anchors.

HYDRO performed walkway and platform area construction, including foundation, deck, and railing system. A total of 118 helical piles were used to complete the walkway.

Fish House Cove, Pennsauken, New Jersey

The original foundation design for the proposed timber walkway and platform in Fish House Cove, Pennsauken, NJ had proven to be unsuitable for the marshland. Design consisted of 12” diameter concrete filled caissons, once installed, began to rotate and settle. NJ Transit, site owner, wanted to abandon constructed caissons and use a new foundation system. W.J. Castle, P.E. & Associates, P.C. (CASTLE) was contracted to design and construct the new walkway foundation.

CASTLE performed an analysis of the site and developed a new walkway foundation system design. CASTLE designed a foundation system using approximately 100 1¾”-square solid-shaft Chance helical piles. A U-shaped steel bracket was attached to the top of each anchor which supports a timber cap beam. Two helical piles were used at each cap beam creating a bent system. Several existing caissons were utilized in locations were they had not previously failed.

In these locations, two caissons were placed on the outside and one Chance helical pile was installed in the center making up the bent. Helical shaft extensions with splice plates were added to the caissons extending up to the same height as the Chance helical piles, creating a level plane for the timber cap beams. Two ½”-diameter galvanized bolts were used for each cap beam connection. The new platform foundation design included adding one helical pile to the timber bents and an additional bent added where required to use two helical piles.

Once CASTLE received the approval from NJ Transit to proceed with the proposed walkway/platform design, Hydro-Marine Construction Co., Inc. (HYDRO) was utilized to complete the construction. HYDRO is the affiliate construction company to CASTLE and is a certified distributor and installer of Chance helical piles and anchors.

HYDRO performed walkway and platform area construction, including foundation, deck, and railing system. A total of 118 helical piles were used to complete the walkway.

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