Hanson_Chesapeake-Section-AWWA-Symposium-.pdf

7/25/2019 Hanson_Chesapeake-Section-AWWA-Symposium-.pdf

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HANSON PRESSURE PIPE

Steve Smith

January 16,2014

PRESTRESSED CONCRETE

CYLINDER PIPE (PCCP)

Chesapeake

Section AWWASymposium


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Slide 2- 06.August 2007Hanson sample slides Group Comm & IR

Interpace Projects with Problems

INTERPACE 45 MILLION FEET 11,500 PROJECTS


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AWWA C-301 Key Improvements to Manufacturing

SUMMARY OF KEY IMPROVEMENTS TO PCCP(to AWWA C301 since 1984)

MORTAR COATING

Increased mortar coating thickness

Added cement slurry coating prior to prestressing and coating

Increased the minimum moisture content, which reduces absorptionmaking the coating less permeable

Required minimum compressive strength

Required a nondestructive thickness check on every pipe prior to removalfrom the coating machine

Required a soundness check on the cured coating on every pipe

PRESTRESSING WIRE

Increased the minimum size wire to 6 gauge, allowing better keying ofmortar to wire

Eliminated the possibility of using Class IV wire

Added a maximum temperature limit of 360 during wire drawing, whicheliminates the sensitivity of overheated wire to hydrogen embrittlement

Decreased the allowable fluctuation in wire wrapping tensile stress

Added tests to ensure high quality wire; i.e. Torsion, Bolt Cutter, Reduction ofArea, with testing required on every coil

ASTM A648 Supplementary HE Qualification Testing Requirement mandatory

CYLINDER STEEL

Eliminated Grade E cold rolled steel

Eliminated 18 gauge thickness; minimum is 16 gauge

Required testing of weld strengths

CONCRETE

Added minimum quality limits and testing frequencies for aggregates

Added limitation on allowable longitudinal cracks in core

OTHER

Required qualification of welders

Added requirement for test equipment calibration

Improved quality control of gaskets

Added allowable design stresses and minimum cylinder thicknesses forfittings


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Slide 4- June 2009Toronto and Ottawa Ontario Canada Seminars

AWWA C301

Prestressed Concrete

Pressure Pipe, Steel

Cylinder Type


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The New Hanson Pressure Pipe

Manufacturing Locations

Lubbock, TX

Grand Prair ie, TX

Victoria, TX

Palatka, FL

St. Eustache, QC,

Canada

Hattiesburg, MS

Bakewell , TN

South Beloit , IL

Stouffville,

ON, Canada

Uxbridge,

ON, Canada


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PCCP History

First Installation (LCP) - 1942

First AWWA Standard (Tentative) - 1949

First Installation (ECP) 1953

Used in 90 of 100 Largest U.S. Municipalities

107,000,000 Feet (20,300 Miles), in U.S. and Canada


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STEEL CYLINDER FABRICATION


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JOINT RING ATTACHMENT


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CYLINDER HYDRO TEST


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APPLYING CONCRETE CORE LCP & BWP


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ECP VERTICAL CASTING


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HORIZONTAL PRESTRESSING


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VERTICAL PRESTRESSING


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MORTAR COATING


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MORTAR COATING

VERTICAL

COATINGMACHINE FOR

ECP


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MORTAR CURING


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CONCRETE CURING


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STEEL PLATE FABRICATION


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Slide 19- June 2009

Toronto and Ottawa Ontario Canada Seminars

RAW FITTING


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Slide 20- June 2009

Toronto and Ottawa Ontario Canada Seminars

MORTAR APPLICATION


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ECP vs LCP


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Field Services Emergency Repair


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CPP Emergency Repair Questionnaire


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Slide 24 - 10 October 2012

VC Summer Nuclear Plant Seminar

Emergency Repair Program

Hanson Pressure Pipe has established an emergency repair

program for all concrete pressure pipe products Customers can contact a Hanson employee 24/7 in the event of a

pipeline emergency

Pipe repair material is stocked in all manufacturing plants and

ready for immediate shipment


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PCCP Emergency Repair Kit


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PCCP Closures


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Closure Installation Squareness Top and Bottom


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Closure Installation Squareness Top and Bottom


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Closure Installation Squareness Side to Side


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Closures Squareness Side to Side


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Closure Cutting


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Field Weld Closure


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Field Weld Closure


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Field Weld Closure


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Closure Using Come Along to Pull Joint Home


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Closure Hydraulic Jacking Bell


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FOLLOWER RING CLOSURE


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Repair Saddle Assembly

Repair Saddle Assembly can be used to address localized

problems on the pipe barrel Broken prestressing wires

Punctured steel cylinder

Damage must be far enough away from the joint to allow the

saddle assembly to be seated onto the pipe barrel


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Concrete Pressure Pipe Repair Saddle


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MECHANICAL JOINT SPIGOT

AND MECHANICAL JOINT BELL ADAPTERS


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Field Welding

Leaking joints can be welded for repair

Lined Cylinder Pipe joints can be welded on the exterior Embedded Cylinder Pipe joint usually will need to be welded on the

interior


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STANDARD JOINT


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SNAP RINGJOINT


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SNAP RING JOINT


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ASSEMBLED SNAP RING JOINT


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HARNESS CLAMP JOINT - ECP


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HARNESS CLAMP JOINT


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Tapping Saddles


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Tapping PCCP


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Grouting with Diaper


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Questions

and

Answers


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Tapping Saddle Removing Prestress Wire


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PCCP

is a

Rigid

Pipe

Documents

Hanson_Chesapeake-Section-AWWA-Symposium-.pdf