For General Construction, that's not just an engineering principle, it's our business philosophy. Below you will find a listing of some selected projects. Use the menu to the left to view projects by the type of work.
The project included the demolition of the existing timber apron and removal of the associated creosote treated supporting piles. The new dock is comprised of concrete piles, sheet piles, a new bulkhead, battered steel pipe piling, augercast piles and micropiles, concrete caps, concrete decking, steel fender piling and a fender system. Additional riprap, rat rock and other capping materials were added below the apron slope cover. General also installed a ships water line, a catch basin with associated storm sewer piping, a new ships electrical system, security fencing, and a new light pole.
he initial 285 ft of pipe was installed through a jacked and bored casing installed by a subcontractor. This runs from the Des Moines Beach Park, under a hill, and out the upper portion of the beach. The next 600 ft were installed at low tides with an excavator in a sheet pile trench. All work was performed on non-floatable mats to protect the beach. The next 400 ft of pipe going offshore was installed by divers and a derrick barge in an excavated trench with sheet pile to protect the eel grass. Past the sheet pile, the pipe continues in an excavated trench for 200 ft then daylights and was set on the bottom out to the station 21+00. Precast anchors were set over the unburied section of pipe.
The project began with the relocation of approximately 1,000 sq ft of eelgrass. Then a 250ft long by 50 ft wide trench was dug. Serving as a foundation for the diffuser, three, 4 ft by 12 ft articulated concrete ballast mats were placed at in 55 ft of water in Puget Sound. The 620 ft. long, 54 inch HDPE outfall pipe was sealed at each end and pulled from the beach into the water. While it was floating, 23 concrete weights were attached. Each weight was over 15,000 pounds. After attaching the onshore end to its tie-in point, we used controlled submergence to sink the pipe into the trench and onto the mats. Finally the trench was backfilled and the beach was restored to its previous appearance.
The project required the demolition of approximately 850,000 sq ft of existing concrete piers. 2.3 million cu yd of clamshell and hydraulic dredging were required and 390,000-tons of rock fill and riprap was placed. 125,000 sq ft of dynamic compaction was required and 1.4 million lin ft of wick drains were installed. The 2,400 lin ft reinforced concrete marginal wharf was constructed on 1,600, 24 in. concrete piling, totaling 116,000 lin ft. The project also required crane rails, drainage, water and electrical service. Paving stones and asphalt concrete finish the back land area.
GCC is a subsidiary of Kiewit Corporation. This link will direct you to Kiewitjobs.com where you’ll find a comprehensive list of all Kiewit and subsidiary staff opportunities. If you would like to view GCC jobs only, use the search tool to narrow results.
33455 6th Avenue South
Federal Way, WA 98003
Tel: (253) 943-4200
Fax: (253) 943-4021