NTMWD’s CFRP Large-Diameter Water Rehabilitation

TUESDAY, JAN. 31

TRACK II-A = WATERWORKS CONFERENCE

10:00-10:25 a.m.

NTMWD’s CFRP Large-Diameter Water Rehabilitation

Speaker:  Kyle Sanderson, P.E., Project Manager/Associate, Kimley-Horn & Associates Inc.

 

This presentation will discuss the North Texas Municipal Water District’s Wylie-Rockwall-Farmersville Pump Station improvements project to increase the discharge pressure in about 2 miles of the existing 36” water line, from 100 to 150 psi. Following evaluation of the different trenchless technologies, CFRP rehabilitation was selected in locations totaling 910 LF, where it was not feasible to construct a new line. The project also included 970 LF of hand tunnel with tunnel liner plate, 570 LF of guided auger bore and 48” steel casing pipe to aid in creek and TxDOT crossings, and an extended installation underneath the median of Brown Street within the City of Wylie. Challenges faced throughout the process, such as sequencing and structuring the work to minimize downtime and costs, and to clarify contractor/subcontractor responsibilities will also be addressed.