SPECIFICATIONS & GUIDELINES - Caltrans

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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.

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

  Installation, Specification, Pipe