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 -


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


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


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)


■ 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


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


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%


Pipe StructurePipe Structure~5%~5%


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



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


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


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


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


Questions?

n Thank you for your time!


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

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