1303 MADRONA AVE 2016-01-01 MF Import

Road/Rail Tunnel Crossing o(Welland Canal, Ontario The combined road/rail tunnel was constructed in an open cut with a maximum depth of approximstely eight (80) feet. The railway requirements for approach gradients of 0.75 percent resulted in approach cuts that extended five miles in length from grade to grade. Geotechnical project manager for the rosd and railway bridges across the approaches to the tunnel and for the tunnel during construction. Responsible for site investigations and foundation design of the bridges. Fuel and Oil Storage Tanks, Ford Motor Company, Ontario Site was underlain by low-strength stratified soils unable to support the weight of the tanks and contents. Recommendations were made to instrument the soils with piezometers to monitor pore pressure buildup and dissipation as the tanks were hydrotested. Strength buildup under the water loading would be adequate for the stored fuels of lesser density. Building E, Boeing Complex, Tukwila, Washington Seventy-foot high buildina wich extremely high floor and column loadings. Recommendations for constructing a one and one-half to one slope, 100 feet high wilh simultaneous dewatering, criteria for auger-cast piling and conventional footings, and for a methane collection system. Salmon Bay Refueling Dock, Seattle 258-foot offshore concrete refueling dock with attached 6,000 square foot warehouse and pump station. Site was underlain by �oft clayey silt interlayered with fibrous peat. The thickness of the soft soil varied between t�venty and fifty feet. Recommendations were presented for the earthwork, pile•foundation support silternatives, and utility pipeline bedding and trench backfll. Environmental soil sampling and testing for potential diesel fuel contamination East Lake Sammamish Parkway Office Building Three-story offce buila�ng with p2rking facility. Subsurface conditions consisted of loose silty sand, c!ayey silt and peat to a depth of seventy fa�t. Below these layers was dense sand. Different pile types were investigated including 2uger-cast, steel-pipes and pre-stressed concrete octagonal piles. Recommendations were made for earthwork, utility line support and trench backfill. West Mercer Place Apartment Buildings, Seattle Three six-story apartment buildings with two levels of underground parking with steep slopes on the western side. Recommendations included design criteria for a compensated foundation, cantilevered and tied-back shoring, and for permanent walls. Construction and post- construction slope stability were also evaluated. Second and Harrison Apartment Building, Seattle Ten-story apartment building including four levels of underr�round parking. Recommendations for temporary tied-back shoring, perm�nent foundation walls and alternatives for foundation support. SpearWarehouseExpansion. Seattle Site was an old landfill for the City of Seattle. Designed surcharge program to limit settlement and made recommendations for tunnel support and pile and footing design. Designed methane collection systems.