3003 W CASINO RD BLDG 40-56 Geotech Report 2018-01-02 MF Import

REPORT OF GEOTECHNICAL INVESTIGATION PROPOSED BUILDING 40-56 EXPANSION BOEING EVERETT FACILITY EVERETT, WASHINGTON For the BOEING COMPANY 1.0 INTRODUCTION This report presents the results of our geotechnial investigation and consultation for the proposed expansion of Building 40-56 in Everett, Washington. The expansion is to be located on the north end of the existing building, as shown on Plate 1 of this report. The report describes the nature of the proposed project, the field investigation and laboratory testing programs, the scope of analysis conducted and our recommendations for foundation support and construction. 2.0 PROPOSED CONSTRUCTION The existing Building 40-56 is to be extended about 420 to 525 feet northward over the full length of the building. The extension is to be a steel structure with column spacing typically at 50 by 100 foot grid. The South column line of the extension is to be located immediately adjacent to the north wall of the existing structure. The expansion an be separated into three area; mezzanine area at the southern end, low bay arm at the eastern portion, and high bay area in the western portion. Maximum loads of about 1,100 kip an anticipated for columns in the Vacuum Pump Room, which is about 50 feet by I50 feet in dimension and is located within the mezzanine area. Typical column lads in the low and high bay areas an 280 and 590 kips, respectively. Floor loads in the proposed expansion are expected to be on the order of 500 pounds per square foot (psf). Slab -on -grade construction is proposed. A pedestrian tunnel about 15 feet deep and 16 to 20 feet wide is proposed in the east -west direction in the mezzanine arm. Several •- 005.00695• 0t6\sewOt90.mp I 00695.509.016