Prestressed Concrete Cylinder Pipe Comparison to Bar Wrapped Pipe with Steve Smith

Water Advocacy
Published on Sep 3, 2016
This video was produced to show you how to select a large diameter water transmission main product. Ductile Iron, High Density Polyethylene (HDPE), PVC and Steel are other choices when making your selection for Large Diameters Pipes.
Prestressed Concrete Embedded Cylinder Pipe Comparison to Bar Wrap Pipe with Steve Smith (Pipe Industry Icon)
Diameter Chart and Sizes Available
Prestressed Lined Concrete Cylinder Diameters 16 Inch to 60 Inch
Prestressed Embedded Line Cylinder Diameter 16 Inch to 144 Inch
Bar Wrapped Concrete Diameters 10 Inch to 72 Inch
Bar-Wrapped Analysis - Remember this is steel rod not wire.
Rod Wrapped at 500 PSI - Heavy Steel Cylinder - Relies on Soil Profile Support - Semi Rigid Design
400 PSI Design Water Pressure Rating
Bar-Wrapped Pipe combines the physical strength of steel with the structural and protective properties of high strength cement mortar. A round, mild steel bar is helically wound around the steel cylinder and all surfaces are encased in cement mortar. This composite pipe reacts as a unit when resisting internal pressure and external loads. The basis of design provides a safety factor comparable to other waterworks pipe materials for normal service conditions and surge or water hammer. The stress in the steel components at working pressure is limited to one half the yield strength of the steel.
Prestressed Analysis
Prestressing Wire 6 Guage Class 3 - 252,000 - 282,000 PSI - 1 Inch Pitch - 1 Inch Mortar Coating
16 Gauge Cylinder - Rigid Design
Concrete structures are prestressed when predetermined compressive stresses are applied to them to counter expected future tensile stresses as a result of field loads. In Prestressed Concrete Embedded Cylinder Pipe, prestressing is achieved by helically wrapping, under measured
tension and at uniform spacing, a high tensile strength wire around the concrete core. This wire wrap places the concrete core and the embedded cylinder in compression, developing
the pipe’s ability to withstand specified hydrostatic pressures and external loads with a safety factor comparable to other waterworks piping materials. Concrete’s high compressive strength and steel’s high tensile strength are combined to form an elastic structure. This feature
allows the pipe to perform even if the design working loads are exceeded.
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J. Scott Shipe produced this video for educational purposes / questions regarding the content please contact [e-mail]
File Video 1,137 - 2016
Category
Science & Technology

[@twtor3099]

Very informative.

[@10SecondZ06]

Nice. I learned the differences I was looking for.