Transcription of SPECIFICATIONS & GUIDELINES - Caltrans
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SPECIFICATIONS & GUIDELINES - Caltrans
Caltrans ENCROACHMENT PERMITS GUIDELINES AND SPECIFICATIONS FOR TRENCHLESS TECHNOLOGY PROJECTS AUGUST 2018 2 TABLE OF CONTENTS PROCEDURAL REQUIREMENTS FOR DESIGN AND CALCULATIONS OF STRUCTURAL AND SUB -STRUCTURAL PROJECTS .. 3 Structural Design and Calculations .. 3 Substructural Design and Calculations .. 3 Project Owner's Responsibilities .. 4 Contractor's Responsibilities .. 4 TUNNELING PROJECTS .. 5 Cal/Osha Requirements .. 5 Tunnel .. 6 Tunnel Shield .. 6 Tunnel Lining .. 6 Lagging .. 7 Construction of Shafts and Pits .. 7 Placement of Shafts and Pits .. 7 Excavation .. 8 Dewatering .. 8 Grouting .. 8 Materials .. 9 Project Owner's Responsibilities .. 9 Contractor's Responsibilities .. 10 ENCASEMENT REQUIREMENTS .. 11 BORE & JACK .. 12 Bore and Receiving Pits .. 12 HORIZONTAL DIRECTIONAL DRILLING .. 13 Soil Investigations .. 13 Pre- construction & Site Evaluation .. 14 installation Requirements.
Technologies for the installation of utilities when the diameter is 30” or larger (jack & bore, micro- tunneling, horizontal directional drilling, or pipe-ramming). When the distance between the tunnel and an existing structure is less than twenty times its diameter, it
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