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March 26, 2018
Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main
Rehabilitation
Simon Lobdell, PEPatrick Stout, PE
Presentation Outline
Force main history Rehabilitation approach Construction issues Steam vs Water Inversion
Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation2
Rogerson Drive Force Main – 30-inch Break
3 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch Break
First Look
4 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch DIP Repair
5 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Why did it happen there?
6 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch DIP Repair
7 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Proposed Rehabiliation
8 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Existing Conditions
9 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Elimination of 30-inch Mechanical Line Stop
10 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Elimination of 30-inch Mechanical Line Stop
Replaced line stop with tee/valve assembly
Reduced cost by eliminating line stop rental fee
Utilized existing parallel 16” FM to bypass flow
11 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Elimination of 30-inch Mechanical Line Stop
Plan for future connections Only applicable if Client
wants additional infrastructure
Short bypass may not warrant elimination of line stops
Utilize plug valves for wastewater to increase reliability
12 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
24-inch Mechanical Line Stop
13 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
24-inch Mechanical Line Stop
14 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
24-inch Mechanical Line Stop
15 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Existing 24” FM Drained
24-inch Temporary Bypass
16 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Parking Garage Road Ramp
17 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Parking Garage Road Ramp
Concrete Taper
4 mil PlasticPlywood SheatingUnder Concrete
18 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Parking Garage Road Ramp
19 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Parking Garage Ramp
20 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
ARV Structure
21 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
ARV Structure
22 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
ARV Structure
23 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Temp Odor Control / Pedestrian Ramp
24 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Temp Odor Control / Pedestrian Ramp
Temporary pedestrian ramp was utilized to manage pedestrian traffic over 24” bypass pipe
Utilized temporary ARV and carbon filter to manage odor in urban environment
25 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Traffic Control for School
26 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Traffic Control for School
27 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Pipe Replacement
Removal of old line stop concrete and ARV MH
Adding valves for future connections
Worked with OWASA touse PVC in lieu of DIP(OWASA standard)
28 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
CIPP Lining
29 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
CIPP Pre-liner
30 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
CIPP with Pre-liner Removed from Protecto 401 lined DIP
31 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
DIP interior pipe liners can melt and dilute resin during CIPP cure process
Ensure pre-liners are used to prevent diluting resin
Evidence of Protecto 401 lined DIP melting
30-inch CIPP
32 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch CIPP – 1st Liner
Uncured Liner Location
Infiltration Entering
33 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch CIPP – 1st Liner
34 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch CIPP – Partial 2nd Liner
35
Failure at Bend
Approx. Extents 2nd Partial Liner
Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch CIPP – Partial 2nd Liner
36
Intermediate End Seal
Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch CIPP – Completion 2nd Liner
37
Failure at Bend
Approx. Extents 2nd
Completion Liner
Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch Completion 2nd Liner
38 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch 3rd Liner
Complete liner installed Installed using water inversion Removed intermediate end seal prior to lining Warranty for composite liner
39 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Advantages and Disadvantages Air Inversion and Steam CIPP Advantages
• Quicker Installation• Control Installation
(Steep Grades)
Disadvantages• Removal of Residual Water• Inversion Through Bends• Preventing Additional
Infiltration Entering
40 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Advantages and Disadvantages Water Inversion and Water Cure CIPP Advantages
• Removes residual water• Prevents additional
infiltration entering• More controlled inversion
through bends• Curing temperatures are
more regular
Disadvantages• Slower installation• Control installation
(steep grades)
41 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Elimination of 30-inch Mechanical Line Stop
43 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Elimination of 30-inch Mechanical Line Stop
44 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
Temp ARV
45 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
46 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
30-inch CIPP Downstream Restraint
47 Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
ARV Structure
Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation48
30-inch CIPP – Partial 2nd Liner
49
Crack in Liner
Lessons Learned from OWASA’s Rogerson Drive 30-inch Force Main Rehabilitation
