Agricultural Wastewater Conveyance and Structures Using - PowerPoint PPT Presentation

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 – Surrounding area is farmland – Much of the flow originates at an Industrial Site

2018 E. Coli Outbreak

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

Solution

Challenge 1 Industrial Wastewater

Challenge 1 – Industrial Wastewater • Corrosive cleaning agents “Severe hydrogen sulfide corrosion may reduce the 50 to • Chlorine 100-year life expectancy of • Suspended Solids infrastructure to less than ten years” According to an EPA Study…

Challenge 1 – Industrial Wastewater pH Range – Inert to chemical cleaning agents 0 7 14 – Inert to chlorine – Inert to “hot” soils 1.5 – Inert to hydrogen sulfide gas @ 140 ° 14

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

Challenge 1 – Industrial Wastewater Abrasion Resistance pH = 4 D = 24" % invert loss Quartz slurry in pipe with capped ends attached to rocker and rotated for 400,000 cycles

Challenge 2 Under Roadway

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) 3 rd Party Testing •

Challenge 2 – Under Roadway Dual-Wall PP Pipe 12” – 30” per ASTM F2736 12” – 60” per ASTM F2881

Challenge 2 – Under Roadway Triple-Wall PP Pipe 30” – 60” per ASTM F2764

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

Challenge 2 – Under Roadway

Challenge 2 – Under Roadway

Challenge 2 – Under Roadway

Challenge 3 Joints

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 ASTM F477 Gasket – No need to excavate for bell holes

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

Challenge 3 - Joints Correct Interior Joint Assembly Home Mark on Pipe

Challenge 3 - Joints • Extrusion process is seamless & monolithic • Standard 20-ft lay- lengths • Less Joints!

Challenge 4 Shallow Slope

Challenge 4 – Shallow Slope S = 0.00061

Challenge 4 – Shallow Slope Inline Bell Oversized Bell

Challenge 4 – Shallow Slope Manning’s n = 0.012

Challenge 5 Bends

Challenge 5 – Bends

Challenge 5 – Bends

Challenge 5 – Bends

Challenge 5 - Bends

Challenge 6 Manholes

Challenge 6 – Manholes

Challenge 7 Service Life

Challenge 7 – Service Life INNOVATION

Challenge 7 – Service Life Florida Department of Transportation

Summary Challenges Solutions 1. Polypropylene material with 1. Industrial Wastewater Impact Modified Copolymer • Corrosive cleaning agents • Suspended Solids 2. Pipe Stiffness 2. Under Roadway 3. Double gasket joint 3. Joints 4. Inline Bell, smooth liner 4. Shallow Slope 5. Custom bends 5. Bends 6. Custom risers 6. Maholes 7. 100 years 7. Service Life

Thank you! Questions and Discussion Thomas.LaRue@ads-pipe.com Eric.Lawrence@ads-pipe.com