Platte River Interceptor Slipline Rehabilitation

Transcription

1 Platte River Interceptor Slipline Rehabilitation Owner: Metro Wastewater Reclamation District Contractor: American West, Denver CO Slipline Pipe Manufacturer : Hobas Pipe USA Presented by: Tom Furie, Area Manager Southwest, Hobas Pipe USA

2 Sliplining: What Is It? 2

3 44 ( OD 45.9 ) Inside 48 Host 3

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6 Sliplining Overview : Issues and Concerns O Liner Diameter Fit O5% Annulus Typical O Host Undersized O Joint Offsets, Grade & Alignment of Host Pipe O Verify with Madrel Before Insertion of Liner Pipe O Joint Selection, Low Profile vs/ Flush OCondition of Host Pipe, Not Fully Clean? ODesired Clearance 6

7 Steel Mandrel Fabricated by Contractor 7

8 Pit Locations O At PI s (Points of Intersection ) O Adjacent to Curves or Manholes O Specify Denied Area s (Owner) O Shallow Locations are Preferable O Distance Limitations, How Far to next PI? 8

9 Sliplining Pit Locations Compact! 9

10 Sliplining Pit Locations May Require Creativity! 10

11 Above Ground Slipline 72 CCFRPM Inside of 78 Steel 11

12 Pushing Distances and Curves O 2,000 to 3,000 typical, longest push know 5,600 (51 into 57 ) O Distances Depend on Pipe Material (CCFRPM, PVC, HDPE) O Curves Require Short Pipes(3,5,10 )/ Smaller Diameter OUse of CIPP in Curves OFittings Carried- In or / Dig up and Replace 12

13 LAX Airport: 4700 feet of 48 pipe pushed from one pit. Less than 25 tons to push 500 tons of pipe. 13

14 Pipe Insertion O Cleaning Line No Obstructions OPoint Repairs O Mandrel Proof Before Insertion of Liner O Pusing Pipe with Pushing Ring (The Easy Part!) ORates of up to 240 per Hour in Live Flow OLateral Connections O Video Confirmation 14

15 Lateral Connections 15

16 Grouting and Inspection O Collapse Pressure Grouting Contractors O Floatation ( Best with Ballast of Sewage & Lightweight Grout) O Bulkhead at Manholes Pushing Sewage from Annulus O Video Inspection Confirmation of No Damage OLeak Testing O Close out Pit Locations, Closure Couplings 16

17 DOT Road Culvert Before Grouting 17

18 Flow Recovery

19 Sliplining not limited to Large Diameter Pipe! 18 Inside of 20 Host 19

20 Slipline Live in L.A 1,400 Feet Rehabilitated in 6 Hours 20

21 Platte River Interceptor Rehab OProject Necessary Because Infiltrartion Tests Showed Joints Leaking. O 78 RCP Sewer Transmission Line / 150 Leaking Joints. O Metro Dist Spent $300,000 to Repair Joints/ $18,0000 each ORepairs Unsuccessful OGlobal Solution Desired by Metro Dist - Leak Free Pipe. O Project Designed by Metro Dist Engineering. 21

22 Platte River Interceptor Rehab OScope: Rehabilitate 2,030 of 78 RCP & 3 Manholes and Associated Fittings. ( Trenchless & Open Cut) OProject Bid Competitively Between Slipline and CIPP O District had Luxury of Diverting Flow on the Line. O Low Bidder: America West Construction Inc. Denver CO O Construction Cost: $1,338,981 O Method Chosen by America West Construction: Slipline 22

23 Houston Factory Host Pipe in Good Condition. Pushing Pit does not require containment with Dry Line. 23

24 72 CCFRPM - Flush Joint Slipline Pipe 24

25 Lightweight 72 Liner Pipe ( OD 75.4 ) weight 330 lbs/ft 25

26 Liner Pipe being Pulled In 26

27 Confined Space, Sliplining Close to River and Bike Path

28 Houston Factory Use of Steel Push Ring 28

29 Using Bucket to Push Pipe Not Rocket Science 29

30 Point of Intersection, Fitting Location 30

31 Tee Base Manhole/ FRP Riser 31

32 Pushing Both Directions From The Same Pit! 32

33 Advantages to Sliplining - HOBAS OImproved Flow Capacity (increased hydraulics) OMany Oddball Pipe Diameter to choose (27, 33, 41 ) ODone in Live Flow No By Pass Pumping =$$$ O High Strength Pipe Longer Pushes = Fewer Pits O Joint (Low profile vs. Flush) and Pipe Length Options O Easy to Grout with Higher Safety Factors O Visual Inspection of Liner Before Insertion OPipe is Designed to be Stand Alone O Significant History of Supplying Slipline Pipe 33

34 HOBAS PIPES are your best value Thank you