Tunnel Business Magazine

JUN 2018

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TUNNELINGONLINE.COM TBM: TUNNEL BUSINESS MAGAZINE // JUNE 2018 T U N N E L U P D A T E S 4 3 slurry wall support of excavation (SOE), with a connecting adit to the front of plant contrac- tor's receiving lift station shaft. Arup and BBJV continue to work toward preferred inlet options at both of the grav- ity pipeline tie-in points, Bair Island, and San Carlos, which will capture flows from four adjacent pumping stations to a design capacity equal to 103 million gallons per day (mgd) dur- ing the winter months. Parties Affiliated with the Project: ARUP - BBJV Design Engineer, ESA – BBJV Environ- mental Consultant, Kennedy Jenks – Owner's Engineer, Tanner Pacific - Construction - ager for SVCW, JCK Underground – SVCW Consultant. Key Project Personnel: Jack Sucilsky – Proje e Hanley – Project Super- intendent, Bernard Catalano – Construction tt Paulisich – Tunnel Superinten- ail – Project Engineer, Glen Strid – Project Engineer, Jon Hurt – Engineer of Rec er – Geotechnical Engi- neer of Record, Kevin Clinch – Lead Structural Designer, Luis Piek – Lead Tunnel Designer, Eric Sekulski – Lead Geotechnical Engineer - kol – D , David Halsing – Envi- ronmental Consultant, Teresa Herrera– SVCW er, Bruce Burnworth– SVCW Proje . CONNECTICUT Hartford South Hartford Conveyance and Storage Tunnel Kenny/Obayashi IV, JV Job Specifications include 21,258 lf of 21-ft, ored tunnel precast lined to 18-ft ID. The depth of tunnel is approximate- ly 200 ft. There are three large shafts all with SOE secant piles and rock excavated via drill and shoot. Finished shaft diameters: Launch Shaft 39 ft/35 ft – completed except closure pour; Pump Station Shaft 74 ft/70 ft – OB ex- cavated, OB concrete complete and drill and shoot – 50% complete; Retrieval Shaft 32 ft/28 ft – secant piles installed, shaft excavation start- ing summer 2018. Also included are 15 drop/ vent shafts with finished diameter of 30 to 72 in. with OB excavated with a Bauer drill rig and rock excavated with a Wirth drill rig. Al drilling is expected to be complete by end of June 2018 and nine shafts completed with spiral weld pipe installed, 8 adit/deaeration chambers that will be excavated drill and shoot as the main line passes with deearation chambers cast-in- place concrete and adits lined with spiral weld pipe. Ground conditions are red siltstone with basalt encountered a excavation. The project is currently 38% com- plete. Final completion is scheduled f ch 22, 2022. esign Engineer(s): AE- - ager: Jacobs Project Company, bcontractors – Case Foundation Com- pany, R.E.D. Technologies and Gelly Trucking, Freeman Companies, Zuvic, Carr & Associates, and CSI – Precast Concrete Tunnel Segments, er – Herrenknecht. Key Project Pers e Surman, PE Vinny Prestia, General Superintendent Jeff on, Superintendents Ronnie Beesley, Jay Jankowski, Samora Grant, and Hector (Skinny) Jimenez, Engineers: Br toshi Akai, Dan Guerette, Yuichi Kammoto, Allison Do- nahue, Adam Elkins, and Sanaz Dezfolin, QC Laura Wagner - tamaria, Tyler Sheehan, and Javiel Robles. Wethersfield Goff Brook Overflow Closure Bradshaw Construction Corporation Bradshaw is currently constructing a 60-in. microtunneling/conv oject for 30- and 48-in. FRP sanitary sewer installations. The second tunnel, a 420-ft drive through siltstone, was recently completed behind an a Herrenknecht A emaining 1,430 lf of 60-in. steel casing will be installed over three drives, with the longest drive total- ing 850 lf. Ground conditions for microtunnel- ing operations will vary between dense sand, silty gravel and siltstone, with groundwater anticipated. The project members include the Oregon Avenue NW Sewer Rehabilitation

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