1 / 20

What is Structural Lining?

City of Greater Sudbury Lining Program Overview Brittany Hallam, P.Eng. D&C Operations Engineer City of Greater Sudbury May 16, 2018. What is Structural Lining?. Cured-in-Place Pipe (CIPP) Gravity and pressure pipe Resin impregnated fabric Cured by hot water or steam Fully structural

gilbertc
Télécharger la présentation

What is Structural Lining?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. City of Greater Sudbury Lining Program OverviewBrittany Hallam, P.Eng.D&C Operations Engineer City of Greater Sudbury May 16, 2018

  2. What is Structural Lining? • Cured-in-Place Pipe (CIPP) • Gravity and pressure pipe • Resin impregnated fabric • Cured by hot water or steam • Fully structural • Smoother surface • Minimum Design Life: 50 Years

  3. Trenchless Rehabilitation - Benefits • Limit Traffic Disruptions:

  4. Trenchless Rehabilitation - Benefits • Hard to Reach Areas:

  5. Trenchless Rehabilitation - Benefits • Cost and Time:

  6. CGS Background • 942 km of water mains and 778 km of sanitary sewer mains • Increasing age of infrastructure • Current average age: 48 yrs • Large infrastructure funding gap

  7. CGS Watermain Lining Program • 2011 - Test project • 2015 - First 3 Year Contract • 2018 - ~$6 Million

  8. CGS Watermain Lining Program • Choosing locations for lining: • Break frequency • Operational concerns (ie. Discoloured water, low pressure) • Resurfacing projects • Access restrictions

  9. When to Line vs. Replace a Watermain • Adequate flow • No significant growth projections • Limited bends and fittings • Sanitary in good or linable condition • High traffic areas or inaccessible areas

  10. Watermain Lining • Access pits at hydrants, valves, fittings, and bends • 175 meter runs on most mains • 200 meter runs on 6’’ mains • 4’’ to 24’’ diameter mains • Successfully completed projects to line 30’’, 36’’ and 48’’ mains • Line through 22 ½º and some 45º bends • ~$900 to $1,000 per meter on 200mm

  11. Watermain Lining • Steps: • Temporary By-pass • Access Pits • Perimeter Valve Installation • Pipe Cleaning • CCTV Inspection – pre lining • Liner Installation • Reinstatement of Services • CCTV Inspection – post lining • Disinfection • Reconnection & Restoration

  12. CGS Sanitary Sewer Lining Program • 2015 – First 3 Year Contract • 2016 – 5.6 km Lined • 2017 – 11 km Lined

  13. CGS Sanitary Sewer Lining Program • Choosing locations for lining: • Condition Assessment Program • I&I Studies • Watermain Projects • Operational Priority (ie. Multiple spot repairs) • Resurfacing Projects • Access Restrictions

  14. Sanitary Sewer Lining • Manhole to Manhole • No excavation • Cracks, fractures, holes, minor offsets • 150mm to 500mm • ~$170 per meter on 200mm

  15. Sanitary Sewer Lining • Cautionary Tale: • Main collapse in the process of liner curing

  16. Pros and Cons of a Multi Year Lining Contract • Pros: • Early Project Start-up • Ability to Add Locations • Time Saved not Tendering • Building Relationship with Contractor

  17. Pros and Cons of a Multi Year Lining Contract • Cons: • Difficulty with Contract Structure • Unforeseen Added Costs • Less Control Over Contract Schedule

  18. Overview • CGS lining programs are growing exponentially • Multi-year contracts are one of many tools to accelerate these programs • Familiarize yourself with the process before putting out a contract

  19. Questions?

More Related