Agricultural Wastewater Conveyance and Structures Using - - PowerPoint PPT Presentation

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Agricultural Wastewater Conveyance and Structures Using - - PowerPoint PPT Presentation

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Agricultural Wastewater Conveyance and Structures Using Polypropylene Presented by: Tom LaRue, PE Regional Engineer ASCE St. George, UT September 14, 2017 INNOVATION The Project 14,000 ft of 42 Pipe in Salinas, CA

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Agricultural Wastewater Conveyance and Structures Using Polypropylene Presented by: Tom LaRue, PE – Regional Engineer ASCE St. George, UT – September 14, 2017

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INNOVATION

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The Project

– 14,000 ft of 42” Pipe in Salinas, CA – Surrounding area is farmland – Much of the flow originates at an Industrial Site

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2018 E. Coli Outbreak

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Challenges

  • Industrial Wastewater
  • Corrosive cleaning agents
  • Suspended Solids
  • Under Roadway
  • Joints
  • Shallow Slope
  • Bends
  • Maholes
  • Service Life
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Solution

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Industrial Wastewater

Challenge 1

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Challenge 1 – Industrial Wastewater

  • Corrosive cleaning agents
  • Chlorine
  • Suspended Solids

“Severe hydrogen sulfide corrosion may reduce the 50 to 100-year life expectancy of infrastructure to less than ten years”

According to an EPA Study…

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Challenge 1 – Industrial Wastewater

– Inert to chemical cleaning agents – Inert to chlorine – Inert to “hot” soils – Inert to hydrogen sulfide gas @ 140°

7 14

14

pH Range

1.5

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Challenge 1 – Industrial Wastewater

Advanced Resin Technology

  • Impact modified copolymer PP material

provides unique balance between PE & PVC

– Inert to chemicals – Abrasion Resistance

  • Evolution of pipe stems from Europe
  • PP pipe used since the 1970’s
  • Debuted in the US in 2009
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Challenge 1 – Industrial Wastewater

pH = 4 D = 24"

% invert loss Quartz slurry in pipe with capped ends attached to rocker and rotated for 400,000 cycles

Abrasion Resistance

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Under Roadway

Challenge 2

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Challenge 2 – Under Roadway

  • Designed per AASHTO LRFD Bridge Design

Specification: Section 12

  • Load & Resistance Factor Design vs. Iowa Eq.

(multiple factors) vs. (single safety factor)

  • 3rd Party Testing
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Dual-Wall PP Pipe

12” – 30” per ASTM F2736 12” – 60” per ASTM F2881

Challenge 2 – Under Roadway

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Triple-Wall PP Pipe

30” – 60” per ASTM F2764

Challenge 2 – Under Roadway

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Challenge 2 – Under Roadway

Increased Stiffness

  • Reduces Circumferential Deflection
  • Increases Longitudinal Beam Strength

– Easier to handle & install – Easier to backfill under the haunch area – Reduces sags / misalignment in line & grade

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Challenge 2 – Under Roadway

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Challenge 2 – Under Roadway

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Challenge 2 – Under Roadway

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Joints

Challenge 3

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Challenge 3 - Joints

  • Extended Bell

– Provides larger sealing area

  • Double Gaskets on Spigot

– Shipped on pipe & shrink wrapped for protection – Lowers risk for leaks due to construction errors and joint offsets

  • In-Line Bell & Spigot Design

– No need to excavate for bell holes

ASTM F477 Gasket

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Challenge 3 - Joints

Lab Testing

  • Tested to 15 psi, which exceeds 10.8 psi

test required by ASTM D3212

  • Vacuum test in per ASTM F2764

Post-Installation Field Testing

  • 3.5 psi air pressure test in accordance

with ASTM F1417

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Challenge 3 - Joints

Correct Interior Joint Assembly Home Mark on Pipe

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Challenge 3 - Joints

  • Extrusion process is

seamless & monolithic

  • Standard 20-ft lay-

lengths

  • Less Joints!
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Shallow Slope

Challenge 4

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Challenge 4 – Shallow Slope

S = 0.00061

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Oversized Bell

Challenge 4 – Shallow Slope

Inline Bell

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Challenge 4 – Shallow Slope

Manning’s n = 0.012

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Bends

Challenge 5

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Challenge 5 – Bends

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Challenge 5 – Bends

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Challenge 5 – Bends

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Challenge 5 - Bends

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Manholes

Challenge 6

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Challenge 6 – Manholes

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Service Life

Challenge 7

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Challenge 7 – Service Life INNOVATION

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Challenge 7 – Service Life

Florida Department of Transportation

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Summary

Challenges

  • 1. Industrial Wastewater
  • Corrosive cleaning agents
  • Suspended Solids
  • 2. Under Roadway
  • 3. Joints
  • 4. Shallow Slope
  • 5. Bends
  • 6. Maholes
  • 7. Service Life

Solutions

  • 1. Polypropylene material with

Impact Modified Copolymer

  • 2. Pipe Stiffness
  • 3. Double gasket joint
  • 4. Inline Bell, smooth liner
  • 5. Custom bends
  • 6. Custom risers
  • 7. 100 years
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Thank you!

Questions and Discussion

Thomas.LaRue@ads-pipe.com Eric.Lawrence@ads-pipe.com