success of canadian cpp in the halton regionsirepub.halton.ca/councildocs/pm/17/may 27 2015... ·...

Success of Canadian CPP in the Halton Region(Presentation to Planning and Public Works, Halton Region by Gord Gajich, P.Eng. – May 20, 2015)

20.05.2015GG – Planning & Public Works, Halton Region

■ More than 70 years of experience in the design and manufacture of Concrete Pressure Pipe (CPP)

■ More than 50 years since the first install within Halton Region

■ 7 manufacturing facilities within Ontario; 5 within the GTA; 2 facilities within Halton Region (Burlington)

■ More than 24 million metres of CPP in service today within NA

■ More than 210km of CPP designed & supplied by Hanson to Halton Region since 1955 (285 projects)

Company History

Louisbourg Construction Ltd.

Hyprescon

Lafarge Canada Inc

Lafarge Pressure Pipe

Hyprescon(acquisition of Lafarge Pressure Pipe)

- Feb, 2002 -

Hanson(acquisition of Hyprescon)

- Jul 2007 -

20.05.2015GG – Planning & Public Works, Halton Region

Canron Inc. (Hyprescon division)(commenced manufacture of CPP)

-1931-

St. Eustache, Quebec(plant construction completed)

-1987-

Louisbourg Construction Ltd.(acquisition of Hyprescon division of Canron Inc.)

-1990-

Standard Pressure Pipe(commenced manufacture of CPP)

-1976-

Uxbridge, Ontario(plant construction completed)

-1991-

Lafarge Canada Inc(acquisition of Standard Pressure Pipe)

-1994-

CPP - Applications

n Municipal waterworks– transmission pipelines– distribution pipelines

n Sewage forcemains and gravity sewersn Power, industrial, and other plantsn Chlorine Contact Tanksn Cooling system pipingn Cooling system pipingn Outfalls and Intakesn Detention Tanks

20.05.2015GG – Planning & Public Works, Halton Region

CPP Product Types

Type Dia (mm) Pressure/Gravity Designn C300 900-3600 High Rigidn C301(L) 400-1500 High Rigidn C301(E) 1500-3600 High Rigidn C302 900-3600 Low or Gravity Rigidn C303 350-1500 High Semi-Rigid

AWWA Standards & Manual– C301-14: Manufacturing Standard– C304-14: Design Standard for Rigid Pipe

– M9: Concrete Pressure Pipe Manual of Water Supply Practices

20.05.2015GG – Planning & Public Works, Halton Region

CPP Advantage

CPP is well known for its:n Reliability and Securityn Inherent Pipe Structuren Bell & Spigot (incl. Testable)n Restrained Joint Methods

n Not vulnerable to negative pressuren Corrosion inhibiting propertiesn Low to No maintenancen 24hr emergency service!

Grout (duringInstall)

Diaper (during install)

Dense Portland-CementMortar Coating Prestressed

Wire

Welded SteelCylinder

Bell Ring

Concrete Core - Vertically Cast(Cylinder Encased Within)

Cylinder

Spigot Ring

Rubber Gasket

Internal Weld Location(if applicable)

20.05.2015GG – Planning & Public Works, Halton Region

■ Portland Cement provides a high pH environment and Pacifies embedded steel components

Copper

Steel Encased in Mortar / ConcreteBronzes

Nickel

Cupronickel

Stainless Steel (316)

Titanium

Graphite

Silver

Gold

PlatinumCathodic Range

Galvanic Series of Metals

PASSIV

EPASSIV

EPASSIV

EPASSIV

E

Magnesium

Aluminum

Zinc

Cadmium

SteelStainless Steel (410)

Iron

Lead

Tin

Brasses

Nickel

Anodic Range

ACTIV

EACTIV

EACTIV

EACTIV

E

20.05.2015GG – Planning & Public Works, Halton Region

Available Pressure Pipe Materials

Material Mfg. Standard Design Concept

CPPCPP - BWP

AWWA C301 (L) (E)AWWA C303 BWP

RigidSemi-Rigid

Welded Steel Pipe AWWA C200 Flexible

PVC AWWA C900 (≤300mm) AWWA C905 (>300mm)

Flexible

Ductile Iron AWWA C151 Flexible

HDPE AWWA C906 Flexible

20.05.2015GG – Planning & Public Works, Halton Region

Flexible vs Rigid Pipe Materials

n Structure:– Rigid Concrete Pressure Pipe: built into the pipe itself– Flexible Steel Pipe: needs to be built as part of the bedding & backfill or

annular space material and hope that the soil or fill material structure is not disturbed (ie: by nearby excavations, operation of system, natural ground movement, etc). Initial construction is critical for both Open Cut and/or Tunnel

CPPSteel

Soil StructureSoil Structure~5%~5%

Soil StructureSoil Structure~95%~95%

Pipe StructurePipe Structure~5%~5%

20.05.2015GG – Planning & Public Works, Halton Region

Pipe StructurePipe Structure~95%~95%

Flexible vs Rigid Pipe Materials

n Manufacture / Installation Assurance :– Rigid = pipe strength: Full time QA/QC process and independently certified– Flexible = encasement strength: Full time site inspection during bedding

and backfill installation or filling the annular space; confirming proper compaction or filling? (ie: by Region staff, Consultant, Contractor, Geotech?) What about QA/QC of the encasement?

CPPSteel

Soil StructureSoil Structure~95%~95%

20.05.2015GG – Planning & Public Works, Halton Region

Pipe StrengthPipe Strength~95%~95%

Zone 1 W/M (1500/1800mm) CPP Steel

Wall Thickness(Pipe Structure %)

140/165mm (~95%) 27mm (~5%)

Bedding & Backfill or tunnel grouting Control/Inspection

Minimum requirement

[Cellular grout (~5%)]

Maximum requirement

[Grout/Cellular? (~95%)]

Pipe Jointing (Trench or Tunnel) B/S, Testable, RJ, Weld Weld (all)

Integrated Concrete Thin Mortar (13mm)

CPP vs Steel - Not all pipe materials are made equal:

Lining(Lining separation/spalling)

Integrated Concrete(38/44mm) under

compression > (no risk)

Thin Mortar (13mm) on smooth steel

surface > (at risk)

Coating(Coating delamination)

Mortar embedment of prestress wire(low risk)

Mortar on smooth steel surface (at risk)

Corrosion ProtectionIntegrated cement rich

coating & lining

Susceptible to C/L separation

(Additional required)

Failure due to negative pressure No risk At risk

20.05.2015GG – Planning & Public Works, Halton Region

Comparison of Break Rates per Pipe Material

Canada USA

CPP 0.9 6.2

n 2012 comprehensive study by Utah State University – Buried Structures Laboratory illustrates break rate/100miles/year

n Per the Water Main Break Rates in the USA and Canada Reportdated April 2012, failure rates per pipe material are:

n The above represents a break rate increase of over 4x for Steel Pipe vs Concrete Pressure Pipe in Canada!

n What’s the current rate in the Region?

CPP 0.9 6.2

Steel 3.9 13.8

20.05.2015GG – Planning & Public Works, Halton Region

Details that should be consideredO

n Ontario, the GTA, and the Region have limited experience utilizing, installing, operating and maintaining US Steel Pipe

n The Region’s waterworks (and wastewater systems) have benefited from utilizing CPP – over 210km of CPP pipelines in service

n No Canadian steel suppler has the current ability to produce the steel pipe & fitting, as well as line and coat without outside sourcing. (contrary to the tender spec requirements – ref: 1.04A). Was it the Region’s intent to sole source US steel pipe?

n Cellular grout will not effectively support flexible steel pipe if and/or when external or internal forces are imposed on the pipeline. The Engineer’s report did not recognize steel as a flexible material as it did HDPE. Why not?

n For every Canadian $ spent on CPP, over $0.90 is returned to the local economy

n For every Canadian $ spent on US Steel, zero would be returned to the local economy

20.05.2015GG – Planning & Public Works, Halton Region

Summary and Conclusions

n CPP has a proven track record in Halton– Reliability with over 210km installed & in service– 24hr emergency and local support & service– In the unlikely even a repair on CPP is required,

engineering & field support is local– As-constructed layout drawings

n Specify “Made in Canada”– Entire pipeline would be produced in Ontario– Entire pipeline would be produced in Ontario– Support the local economy; not “buy American”

n Structurally, CPP is the best material option– The Structure is in the Pipe– Only ~5% of a rigid carrier pipe dependence is

on the annular space material (vs ~95% for a flexible steel carrier pipe)

– Cellular grout should not be a consideration for flexible pipe materials; the primary liner is designed as a form during install and is sacrificial

20.05.2015GG – Planning & Public Works, Halton Region

Questions?

n Thank you for your time!

20.05.2015GG – Planning & Public Works, Halton Region