Pier 57 Ferris Wheel

Seattle, Washington

Helix Steel was used to fully replace all of the #6 rebar cages in 53 piles.

111 %Shear Strength
40 %Modulus of Rupture
45 %Durability
4 Days SavedSpeed of Construction
40 TonsCarbon Footprint



Manson Construction

Original Design

30” diameter piles, 8- #6 and #3@12’’ hoops

Helix Dosage

25 lb/yd3 and 31.5 lb/yd3

Pier 57 is a Seattle waterfront location favored by tourists and locals. It was lengthened to construct a 156 ft diameter Ferris wheel which opened in 2012. Helix® Micro Rebar™ reinforcement was incorporated into the project design to fully replace the #6 rebar cages inside 53 piles. This application allowed the owner significant reduction in material and labor cost.

A total of 980 yd3 of concrete were placed by Manson Construction, pumped by Conco Pumping with concrete supplied by Cal Portland of Seattle. There were 23,420 lb of Helix® Micro Rebar™ reinforcement added into the concrete at the batch plant that replaced all of the structural rebar cages.