PRACTICES

Recommendations

Info

www.permaform.net • 800-662-6465 • www. centripipe.com CHECK OUT OUR NEW INVENTORY WEBSITE DRIVEN FOR CUSTOMER SUCCESS PIPE JACKING & TUNNELING SOLUTIONS { ESTABLISHED IN 1973 } Since inception, Akkerman has grown with the evolution of our industry demands. We offer pipe jacking, microtunneling, guided boring and earth pressure balance systems to address each project’s pipe specifications, ground conditions and complexities. Contact a sales engineer to pair the best option with your requirements. PLEASE SUPPORT OUR ADVERTISERS WHO WORK TO MAKE TRENCHLESS TECHNOLOGY POSSIBLE! akkerman.com | +1 (800) 533.0386 ® AP/M PERMAFORM The trenchless solutions company Providing Trenchless Solutions Through Our Network Of Certified Applicators Since 1975. Centrifugally cast storm and sewer pipe rehabilitation R Bi-directional centrifugally cast manhole rehabilitation www.permaform.net • 800-662-6465 • www.centripipe.com 52 NASTT-NE NORTHEAST JOURNAL OF TRENCHLESS TECHNOLOGY <strong>PRACTICES</strong> 2016 | WWW.NASTT-NE.ORG
40 FEET DEEP & ABOUT TO FAIL – TOMHANNOCK RESERVOIR NY By: Angus W. Stocking, L.S. Tomhannock Reservoir, located in the state of New York, is more than 5 miles long and holds 12.3 billion gallons when full. Parts of the reservoir’s earth-filled dam date back to 1900, which means that repairs often are needed. Because the reservoir is the only water source for the nearby city of Troy, repairs are complicated—draining the reservoir is impractical for many reasons. This was especially true in early 2013, when the dam’s bottom outlet began to fail. The 310- foot long, 60-inch diameter riveted steel pipe surrounded by earth was leaking at all seams, and threatening to give way entirely. On the reservoir side, the inlet is about 40 feet below the reservoir surface, and closed off by a gate that can be opened to release water. On the downstream side, to prevent erosion, the pipe opens into a diffusion chamber that diverts water to four short 30-inch pipes. “CENTRIPIPE WAS THE ONLY SOLUTION THAT COULD WORK IN THIS SITUATION ” the 30-inch pipe prevented the use of highdensity polyethylene sliplining. And one cannot dig a trench in a dam. Ryan Arold, vice president of trenchless at Arold Construction Co. Inc., had an idea. “We’re CentriPipe contractors, and that was fortunate,” he said. “Because when we did the initial inspection for CDM Smith Inc., the city’s engineers, it seemed like Centri- Pipe was the only solution that could work in this situation.” CentriPipe is a centrifugally cast concrete pipe (CCCP) technology that repairs failing pipe by inserting a spincaster into a pipe, and withdrawing it while it sprays thin layers of high-strength cementitious grout onto the pipe interior—basically, a new concrete pipe is cast inside the old pipe. The new pipe is structurally sound and waterproof, and because it adheres tightly to the old pipe, no annular A UNIQUE SCENARIO This difficult configuration effectively ruled out most pipe rehabilitation techniques. Because there was no access from the reservoir side, all work would have to be done from the diffuser chamber. It was a small space—about 4.5 feet wide, 5 feet high, and 12 feet long—so there was no room for staging cured-in-place pipe equipment, and A complex pipe repair in New York’s Tomhannock Reservoir NASTT-NE NORTHEAST JOURNAL OF TRENCHLESS TECHNOLOGY <strong>PRACTICES</strong> 2016 | WWW.NASTT-NE.ORG 53
Page 1 and 2: NORTHEAST JOURNAL OF TRENCHLESS TEC
Page 3: Underground Pipeline Mapping Techno
Page 6 and 7: SPR PE Yes, we can manufacture a ne
Page 8 and 9: TRENCHLESS GROWTH IN THE NORTHEAST
Page 10 and 11: NASTT NORTHEAST REGIONAL CHAPTER DE
Page 12 and 13: NASTT NORTHEAST REGIONAL CHAPTER BO
Page 14 and 15: ANNOUNCEMENT 2016 NORTHEAST TRENCHL
Page 16 and 17: What are Trenchless Technologies? T
Page 18 and 19: NORTHEAST TRENCHLESS ASSOCIATION: N
Page 20 and 21: “EMPOWERING THE FUTURE OF THE TRE
Page 22 and 23: 108-INCH LOW LEVEL OUTLET CONSTRUCT
Page 24 and 25: HORIZONTAL FEET VERTICAL FEET After
Page 26 and 27: UNDERGROUND ENGINEERING McMillen Ja
Page 28 and 29: WHAT’S HOLDING BACK CURED-IN- PLA
Page 30 and 31: users of the technology. This furth
Page 32 and 33: Old Faithful. 1 Transmitter. 1 Freq
Page 34 and 35: BEAR BROOK INTERCEPTOR REHABILITATI
Page 36 and 37: PROVIDENCE WATER REAPS THE BENEFITS
Page 38 and 39: 1996 1997 1998 1999 2000 2005 2006
Page 40 and 41: lines. The approach adopted by Prov
Page 42 and 43: NEIL HANDLER, EPA SENIOR ENFORCEMEN
Page 44 and 45: Whatever your demand, connectors &
Page 46 and 47: installation method. This method ca
Page 48 and 49: inclinometers, vibration monitors,
Page 50 and 51: various shapes, including horse sho
Page 54 and 55: space is created for water to move
Page 56 and 57: tool exits exactly where the operat
Page 58 and 59: CUES AMP CASE STUDY Accurate Gyrosc
Page 60 and 61: Fusible C-900 ® ● Fusible C-905
Page 62 and 63: INDEX TO ADVERTISERS: Akkerman Inc.
Page 64: TRUSTED AND PROVEN Cleaning, inspec

PRACTICES

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?