City of Frisco Engineering Standards

SECTION 330523
TRENCHLESS UTILITY INSTALLATION
PART 1 – GENERAL
1.01 DESCRIPTION
A. All material, labor, equipment, tools and superintendence necessary to furnish and install
utility lines using trenchless installation methods in accordance with Public Works
Construction Standards, NCTCOG, 4 th Edition, Item 503.
1.02 REFERENCES
A. Public Works Construction Standards, NCTCOG, 4 th Edition, Item 503
B. City of Frisco’s Standard Details included in the plans.
1.03 QUALITY ASSURANCE
A. DESIGN CRITERIA
The pipe casing (or carrier pipe on uncased bores) shall be designed by a Licensed
Professional Engineer for the following loading conditions and applicable combinations
thereof:
1. Cooper's E-80 Railway loading or AASHTO HS20 loading as applicable
2. Earth loading with the height of fill above the casing as shown on the plans
3. Loads applied during jacking, including axial load from jacking
4. All other applicable loading conditions, including loads applied during transportation and
handling.
B. INSTALLER'S QUALIFICATIONS
Installation shall be by a competent, experienced contractor or sub-contractor. The
installation contractor shall have a satisfactory experience record of at least three (3) years
engaged in similar work of equal scope.
All welding shall be performed by a certified welder in the state of Texas.
C. PERFORMANCE REQUIREMENTS
1.04 SUBMITTALS
Lateral or vertical variation in the final position of the pipe casing (or carrier pipe on
uncased bores) from the line and grade established by the ENGINEER shall be permitted
only to the extent of 1" in 10' feet, provided that such variation shall be regular and only in
the direction that will not detrimentally affect the function of the carrier pipe.
Submittals shall include:
City of Frisco May 2012
Standard Technical Specification Trenchless Utility Installation 330523-1