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ACPA Pipe School Barry Bauer PE, LEED AP Oldcastle Precast. Polypropylene Pipe (PP). The Ohio State University!. Polypro Pipe (PP). Who has seen this product in their market? Is it a storm product or sanitary?. What are the markets hearing?. Provide cost savings
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ACPA Pipe School Barry Bauer PE, LEED AP Oldcastle Precast Polypropylene Pipe (PP)
Polypro Pipe (PP) Who has seen this product in their market? Is it a storm product or sanitary?
What are the markets hearing? • Provide cost savings • Storm and Sanitary applications? • Higher pipe stiffness than PVC • Significantly improved joint tightness • Extended Bells • Highly impact resistant • Resistant to UV degradation • Longitudinal strength • AASHTO and ASTM specs • Easier to install • Extended Bells • Multiple varieties
Is it storm or sanitary? Or both? • Major producer makes both! • HP Storm is dual wall 12”-60” • Sanitite HP is dual wall 12” – 30” and 30”-60” triple wall. • Both use the same product for 12”-30” dual wall!!!! Larger diameters are differentiated by third layer or not.
National Specifications ASTM F- 2736 – (6”- 30”) Dual Wall PP for Sanitary and Storm Drain ASTM F- 2764 – (30” - 60”)Triple Wall PP for Sanitary Sewer ASTM F 2881 – (36” – 60”) Dual Wall PP for Storm Drain Applications AASHTO M330-13 – (12” - 60”) Dual Wall PP for Storm Drain Applications (latest spec approval for PP)
Sanitary ASTM Standard Specs • ASTM F – 2764 Manufactured with highly advanced polypropylene resin for 30”– 60” sizes. Triple wall construction provides a smooth interior and exterior wall design supported by a corrugated structural core. • Provides improved stiffness • Greater beam strength • Minimizes Deflection • Enhances performance • Improves Jobsite durability • Arguably, simplifies backfill installation • References Slow Crack Growth requirement 2736 does not • References Ceramic Bell Wrap. 2736 does not • ASTM F – 2736 Pipe manufactured in diameters 6”– 30” and is made of a dual-wall construction which provides a smooth interior (Also used for Storm spec). • Results in superior stiffness • Improved beam strength.
Dual Wall vs. Triple Wall PPWhat are the differences? 12”- 30”Dual Wall Polypropylene Pipe for Sanitary or Storm Extended Ceramic Polymer Reinforced Bell Double Gasket on Spigot Thicker wall cross-section Minimum 46 PII Stiffness for all sizes except for storm 30” – 60” Triple Wall Polypropylene Pipe for Sanitary Extended Ceramic Polymer Reinforced Bell Double Gasket on Spigot Minimum 46 PII Stiffness for all sizes
Extrusion Process • Seamless & Monolithic • Same Manufacturing Platform as HDPE Pipe • 12”-30” on Type VII • 36”-60” on Dross 1800 + Special Downstream Equipment • Standard 13 & 20 ft Lengths, 12”-48” • 60” =16’ & 20’ only PP Pipe Manufacturing
Structural Analysis: AASHTO LRFD Bridge Design Specifications – Section 12 Buried Structures Design Elements Section Properties Material Properties Pipe/Soil Interaction Loading Conditions Design LRFD Wall Thrust Deflection Buckling Bending Strain Combined Strain
Raw Material • PP Resin Technology • Impact co-polymer polypropylene (PP) material (ASTM D4101) • PP has been used for sewer pipe in Europe since 1970’s • PP provides unique balance of stiffness, flexibility & impact resistance • Provides necessary flexibility to shed load over pipe • Meets pipe stiffness criteria for sanitary industry • Greater stiffness & beam strength than HDPE • Greater impact resistance than PVC
Raw Material & Pipe Color • Raw material is opaque • Add grey color concentrate to… • Provide UV protection • Differentiate from HDPE storm pipe • Enhance post installation visual inspection
SaniTite HP and HP Storm Pipe Stiffness PS 46 PII Industry Standard for Sanitary • Diameters : 12”- 30” Dual-Wall • Greater pipe stiffness reduces deflection (old news) Pipe Stiffness (lbs/inch/inch)
SaniTite HP Stiffness PS 46 PII Industry Standard • Diameters : 30” – 60” Triple-Wall • Greater pipe stiffness reduces deflection Pipe Stiffness (lbs/inch/inch)
PP Pipe Stiffness Comparisons Storm and Sanitary • Modulus of Elasticity, E values • E = 110 KSI for HDPE • E = 170 KSI for PP • E = 380 KSI for PVC
Fill Heights & Backfill Materials HDPE PP for Storm PP for Sanitary
Installation for PP (and HDPE) per Manufacture* • BACKFILL MATERIAL Material selection is the first and most important step to creating a structurally sound backfill envelope. In general, backfill material should be of an aggregate nature, able to be compacted, if necessary, into a structurally sound structure. A variety of materials, including some native soils, meet these requirements. *Source: Plastic Manufacturer Standard Installation Guide – May 2012
Pipe Stiffness Easier to handle & install Reduces sags / misalignment in line & grade Still a light weight product Triple Wall Profile = Longitudinal Beam Strength
Extended bell & double gasketed spigot Provides larger sealing area lowering the risk leaks due to construction errors and joint offsets ~14 inches vs. ~7 inches for standard PP and HDPE Allows for increase in Water-Tight pressure test per ASTM 3212 – from 10.8 psi to 15 psi Joint Design for Sanitary
Joint Lab Performance • PP is Lab Testable to 15 psi per ASTM D3212 Standards • HDPE is 10.8 psi per ASTM D3212 in Lab Test minimum
So, which PP are you getting? Which is it ?
Apparent Strengths: • Go to market strategy • Selling “Up Stream” • “new” product • Boots on the Ground • Specifications • Stiff Pipe • $$$ • Joint Performance
Weaknesses: • New • Untested for Time • Sanitary Use – Cautious • 12” is the smallest • UV properties untested for time/ Oxidation • What pipe are you getting? • Field Repairs? • Fittings • Burns • Floats
Threat • Looks Like RCP? • Fill Heights? • Successful Projects? • Smaller Diameters? • Specification Successes • Going to Take a Market Share – • Guess who will get hit?
Opportunities: • Backfill requirements • Fiber RCP • Third Party Testing? • Know your market! Where has it sold, did it do well? Indiana Example
How can we fight it? • What can I do? • What can my company do? • What can our industry do? • Where are the battlefields? • Any ideas?
ASTM • Who is a member? Raise a hand. • Who is a member of C13? • Anyone ever hear of F17? • Which subcommittees? • How do I sign up? • How much time does it take? • But I am not a plastic expert!!!??
How ASTM helps? • Being an active member keeps competitions offensive efforts at bay. • It’s a way to become offensive by altering our specs and theirs to our advantage. • Ever hear a good defense is a good offense? • Its hard to sell a product without an ASTM.
Commitment --- • Concentration is basketball in a nutshell. Concentration is anticipation, which leads to recognition, which leads to reaction, which leads to execution. • - Bobby Knight, Hall of Fame basketball coach • “The only thing that counts is your dedication to the game. You run on your own fuel; it comes from within you.” • - Paul Brown, Hall of Fame football coach • My idea of a good hit is when the guy wakes up on the sidelines with train whistles blowing in his head." - Jack Tatum. • "Winning is the most important thing in my life, after breathing," George Steinbrenner said in 1998, when his Yankees were doing a whole lot of it -- 114 games worth plus the AL pennant and World Series.. "Breathing first, winning next."