11 DECEMBER 2024 WorldWide Drilling Resource® RESPEC Provides Geotechnical Engineering for SLAM Adapted from Information by RESPEC The Alaska State Library, Archives and Museum (SLAM) project in Juneau, Alaska, selected RESPEC as a subconsultant to ECI/Hyer Architects, to provide geotechnical engineering services. The 117,500-square-foot SLAM building has two floor levels with a belowgrade level for parking stalls and mechanical space. The first floor is mainly allocated for the museum exhibit and a secure storage area with a loading dock, as well as a lobby and combined service rooms and offices. The second floor has another secure storage area, a library, and several offices. RESPEC conducted site reconnaissance and explored subsurface conductions by collecting samples using their in-house CME-55 truck-mounted drill. Seven drill hole tests were performed at depths varying from 20 to 75 feet below the ground surface. The test holes were advanced using eight-inch, solid stem auger boring, wash boring, and rotary drilling to the maximum target depth. When the ordinary wash boring or rotary drilling methods were ineffective at advancing the borehole, because of large particle sizes or it caving in, biodegradable bentonite mud was used to stabilize the sidewalls. Soil samples were obtained at frequent intervals, and representative samples were selected for testing in RESPEC’s in-house laboratory. The collected samples were analyzed for pertinent physical and engineering soil properties relative to the proposed construction. The geotechnical report included the results of a ground motion analysis and allowable bearing capacity and settlement analysis along with recommendations for retaining wall/basement load factors; dewatering, frost protection, building site and parking/access preparation, underground site utilities, and corrosion-resistant construction. The company performed periodical special inspection services for monitoring the building foundation excavation, proof rolling, and structural fill placement beneath the building. They also provided geotechnical analysis, evaluation, and design recommendations related to preparing the building foundation, floor slabs, driveway access lanes, hardscape areas, and bus parking lanes. GEOTECH
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