Tunnel Business Magazine

JUN 2018

TBM: Tunnel Business Magazine is the market leader for North America. TBM is written for leading professionals in all aspects of tunneling and covers project stories, design elements, contracting strategies, legal issues, new technology and more.

Issue link: http://digital.tunnelingonline.com/i/986315

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Page 42 of 51

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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