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SECTION 3820 TUNNELING BORING AND JACKING. SECTION 3820 TUNNELING BORING AND JACKING Revision 5 January 2008 Page 1 of 5 PART 1 GENERAL 1 1 DESCRIPTION A TUNNELING Tunneling shall include all me thods by which the underground passageway is

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SECTION 3820 TUNNELING, BORING AND JACKING. SECTION 3820 TUNNELING, BORING AND JACKING ... Method of backpacking tunnel supports. ... beginning jacking or boring. 1. Jacking pit construction. Get a Price; Pipe Jacking Trenchless – Primoris Services Corporation.

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A tunneling process whereby a single new pipe is installed in one pass. A bore head begins the tunnel excavation from an access shaft and is pushed along by hydraulic jacks that remain in the shaft. Get a Price; SECTION 3820 TUNNELING, BORING AND JACKING

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SECTION 3820 TUNNELING, BORING AND … SECTION 3820 TUNNELING, BORING AND JACKING Revision 5 – January 2008 Page 3 of 5 3.4 JACKING DETAILS REQUIRED: A. The Contractor shall submit details of the following to the Engineer for approval before beginning jacking or boring…

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Contact the City Engineer to determine which Standard Specifications and Drawings are applicable. 2015 Oregon Standard Specifications for Construction. Oregon Standard Drawings City of Woodburn Standard Specifications Div. 2 - Materials. S2000 - Cast-in-Place Concrete; S2050 - Cementitious Patching and Grouting Materials; S2100 - Reinforcement

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SECTION 3820 TUNNELING, BORING AND JACKING. SECTION 3820 TUNNELING, BORING AND JACKING Revision 5 – January 2008 Page 2 of 5 B. Grout for pressure grouting outside jacked carried or casing pipe shall be one part Portland

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