1. Polypropylene Pipe (PP)
ACPA Pipe School
Houston Texas
Barry Bauer PE, LEEP AP
Oldcastle Precast

2. PP Pipe Today, what is the story?
What is the latest on the Street?
National Specifications
Manufacturing and Product Testing
Product Characteristics & Properties
Joint Performance
Installation
Structures
Repairs
Fittings
Questions

3. What is the market hearing?
Provide cost savings
Higher pipe stiffness than PVC
Significantly improved joint tightness
Highly impact resistant (except w Modified BB test)
Resistant to UV degradation
Longitudinal strength
Single or Double Gaskets
New AASHTO spec
Best product ever
Easier to install
Extended Bell/Spigot w dual gaskets
Multiple varieties

4. National Specifications
ASTM F – (6”- 30”) Dual Wall PP for Sanitary and Storm Drain Applications
ASTM F – (30” - 60”)Triple Wall PP for Sanitary Sewer Applications
ASTM F 2881 – (36” – 60”) Dual Wall PP for Storm Drain Applications
AASHTO M – (12” - 60”) Dual Wall PP for Storm Drain Applications (latest spec approval for PP)
ASTM F477 – Elastomeric Gasket (like ASTM C1619 for RCP)
ASTM D2412 – Pipe Stiffness Test
ASTM D3212 – Water-Tight (resistant) Joint Lab Test
ASTM F2487 – Water-Tight (resistant) Joint Field Test
ASTM D2321 – Installation Methods

5. Dual Wall vs. Triple Wall PP
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
Minimum 46 PII Stiffness for all sizes 5

6. Sanitary ASTM Standard Specs
ASTM F – 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
ASTM F – 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.

7. Storm AASHTO / ASTM Standard Specs
ASTM F – (6”- 30”) Dual Wall PP for Sanitary and Storm Drain Applications
ASTM F 2881 – (36” – 60”) Dual Wall PP for Storm Drain Applications
AASHTO M – (12” - 60”) Dual Wall PP for Storm Drain Applications (latest spec approval for PP)
My suggestion – KNOW it and OWN it along w AASHTO M294

8. PP Pipe Manufacturing Extrusion Process
Seamless & Monolithic
Same Manufacturing Platform as HDPE Pipe
12”-30” on Type VII
36”-60” on Dross Special Downstream Equipment
Standard 13 & 20 ft Lengths, 12”-48”
60” =16’ & 20’ only

9. Design Elements Design LRFD
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 9

10. Third Party Testing Design Analysis Utah State University
Ohio University
Timothy J McGrath, PhD
(formerly w Simpson, Gumpertz & Heger) 10

11. Utah State University Testing

12. 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

13. 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

14. SaniTite HP (Sanitary & Storm) PP Pipe Stiffness
Diameters : 12”- 30” Dual-Wall
Greater pipe stiffness reduces deflection (old news)
PS 46 PII
Industry Standard for Sanitary
Pipe Stiffness (lbs/inch/inch)

15. SaniTite HP (Sanitary) PP Pipe Stiffness
Diameters : 30” – 60” Triple-Wall
Greater pipe stiffness reduces deflection
PS 46 PII
Industry Standard
Pipe Stiffness (lbs/inch/inch)

16. 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
Minimum Stiffness Values for Flexible Pipes by Size and Source (PII)
DIA (IN)
Storm/SanitaryPVC (1)
Storm
HDPE (2)
PP (3)
PP (4)
PP Sanitary (5) 60
N/A 15 19 30 46 48 20 25 35 42 21 27 36
22.5 29 40 24 34 44 50
Notes:
1. PVC per Manufacturer Literature
2. HDPE values per AASHTO M295
3. PP Storm per AASHTO MP 21
4. PP Dual Wall Storm per Manufacturer Literature
5. PP Sanitary Triple Wall per Manufacturer Literature

17. Fill Heights & Backfill Materials
HDPE
PP for Storm
PP for Sanitary

18. 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

19. Pipe Stiffness Triple Wall Profile = Longitudinal Beam Strength
Easier to handle & install
Reduces sags / misalignment in line & grade
Still a light weight product 19

20. Joint Design for Sanitary
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
The new product utilizes an extended bell with double gaskets. This provides additional sealing area to guard against construction inadequacies and joint offset. The second gasket provides a safety factor to guard against leakage and infiltration both during and after installation. The joint is testable to the ASTM D3212 standard in the laboratory and in the field, ASTM F2487 which is the hydrostatic test, and ASTM F1417 which is an air test. ASTM F1417 designates a pressure test to 3.5 psi. This can be dangerous on larger diameter pipe. All of these testing procedures are intended for sanitary applications. 20

21. 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
Sanitary sewer applications, low head irrigation systems and high water table applications typically require a water-tight performance level. The ADS N-12 water-tight pipe incorporates a polymer band fused to the bell at the manufacturing plant for stiffness and strength. The band is non-metallic, so it won’t rust or corrode, and is bonded integrally to the bell so temperature variations will not affect joint performance. This joint is certified by independent lab testing per D ASTM 3212 to 25’ of head. In the field, the joints can be tested to sanitary sewer levels, several psi, which is much higher than storm drains systems normally require. The amount a joint can be “pulled” to accommodate minor bends is slightly less than for silt-tight systems

22. Joint Assembly

23. RCP & PVC Oversized Bell
Joint Assembly
Inline Bell
RCP & PVC Oversized Bell
You will see this in every presentation ever done by the plastic folks!!!

24. Standard Installation for PP - same as HDPE, PVC and SRPE
National Specification
State / Provincial / Local Specifications
ASTM D Standard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications
Site Specific
AASHTO Section 30 - Thermoplastic Pipe
CSA B1800 Standards - Thermoplastic Pipe
There are two standards used for the installation of corrugated HDPE pipe. One is an AASHTO specification, Section 30 of the Bridge Construction Specifications. The other is an ASTM standard, ASTM D 2321 “Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications.” This ASTM standard is typically used for most applications, and as such, we will concentrate our discussion today on these provisions. For Sanitary sewer the installations tend to be of higher quality and usually require backfill with crushed stone or a granular backfill material such as a class 1.
ASTM 2321 provides recommendations for the soils, embedment, trench widths and procedures required for the installation of buried thermoplastic pipe. These recommendations are intended to ensure a stable underground environment for thermoplastic pipe under a wide range of service conditions.
SaniTite HP , N-12 HP recommended installation

25. Storm Installation for PP
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

26. Differences in Installation for PP, HDPE, PVC or SRPE
???
???
Source: Plastic Manufacturer Standard Installation Guide – May 2012

27. WT Structure Connections Structure Connections
NPC KOR-N-SEAL
Compression fit to structure
Z-LOK Boot Adapter
Cast into structure
A-Lok Compression Adapter
Cast into structure 27

28. Field Repairs for PP
Rubber with Stainless Steel Collar if pressure test required, mainly in sanitary

29. Fittings

30. So, which PP are you getting?
PP storm dual wall
PP storm extended bell and spigot w dual gaskets
PP Sanitary dual wall single gaskets
PP Sanitary dual wall extended bell & spigot single gaskets
PP Sanitary Triple wall extended bell & spigot dual gaskets
Which is it ?

31. Why Concrete? Foltz Concrete
Currently producing gasketed or mastic joint reinforced concrete pipe in 15" through 72" sizes and all classes.
Currently we are servicing the North and South Carolina markets, with a presence in Virginia, West Virginia, Maryland and Tennessee.
These items have been added to the ADS product offering in response to customer requests for a multi-product offering.
And why is that???

32. Strengths: Go to market strategy “new” product ADS power
Specifications
Stiff Pipe
$$$
Joint Performance

33. 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

34. Opportunities: Backfill requirements Fiber RCP Third Party Testing?
Confusion!! It fails by cracking..NOT deflection??? Huh?

35. Threat Looks Like RCP? Fill Heights? Successful Projects?
Smaller Diameters?

36. Questions?