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54"x36" Brick Fifth Street Rehab


1. Project Location: San Jose, California.

2. Diameter of line, sewer pipe material (RCP, MCIP, brick, etc.), length of rehab portion: 54"x36" Egg, Brick, 6300 feet of rehab.

3. When was it constructed and how long has it been in service: Built in place in 1880.

4. Rehab method used: Danby Panel Lok III (spirally wound) with full annulus grouting with cementitious grout with minimum compressive strength of 5000 psi.

5. Cleaning method used (if required) and who cleaned the line: High pressure (3,000 psi) water blasting performed by the Danby licensee (Rondeau Bay Construction, Inc.).

6. Method of flow bypass or diversion, if used: Flows 100% pumped/diverted during work day, but reinstated during non-work periods. Laterals remained active at all times.

7. Depth of pipe: 15 feet.

8. Depth of ground water: 10 feet.

9. Ventilation and odor control used: Fresh air pumped into pipe past upstream air dam; maintained sealed lids during non-work periods, and adequate ventilation to carry odors downstream during the work periods.

10. Construction cost (total amount and cost per foot): $2,380,000 / $378/ft.

11. Month and year of start-up and end of construction: November 1992 - February 1993.

12. Problems encountered during construction: No significant problems. See attached PWM article.

13. Problems encountered after construction: None.

14. Health and safety: Used conventional confined space entry program.

15. Has any re-inspection been performed? What was the condition of the pipe? No.


Reference:

Mr. Jay Schrock, P.E.

JSC International

Tel: 530-238-2018