Case Studies

Rehabilitating Saskatchewan culverts in record low temperatures
by Angus W. Stocking

Cold winters in Saskatchewan aren’t news but even so, January and February in 2014 were special; “Temperatures were ridiculous,” says Doug Cook, general manager for Winnipeg-based MuddRuckers, Inc. “We worked for weeks in one of the worst winters in history, down to around -30 degrees C, with wind chill taking that down to -45 degrees C. But, anything we have to do, we can do in winter.”

More Than Manholes
by Sharon M. Bueno

Trenchless technology and AP/M Permaform president Bill Shook go together like beer and pretzels or bacon and eggs or peanut butter and jelly. You get the idea. Shook and his company have been pounding the pavement since the 1980s, extolling the benefits and basic common sense that using trenchless rehabilitation will help fix what is ailing the more than 20 million U.S. manholes that the EPA says are in dire need of repair. Shook and AP/M Permaform started out at a time when the words trenchless technology were met with a blank stare and manholes were virtually ignored by the cities and officials entrusted in their care. Not anymore — times have changed. The Johnston, Iowa-based company has grown in to a leader in the manhole rehabilitation field, providing a network of trenchless solutions and Certified Applicators for manholes, culverts and large diameter sanitary sewers for North America and around the globe.

ODOT Repairs Arched Culverts from the Inside

Arched culverts made of corrugated metal plates bolted together are a common featyre in Ohio’s sewer infrastructure. With a lifespan of approximately 50 years, culverts installed in the 1950s and 1960s have reached their design lifespans and are beginning to fail.

NYSDOT Embraces Centrifugally Cast Concrete Pipe for Trenchless Storm Sewer Rehab
by Angus W. Stocking

After trial projects and letting several projects under emergency contracts, the New York State Department of Transportation (NYSDOT) now appears to view centrifugally cast concrete pipe (CCCP) as a mature and cost-effective solution for large diameter sewer repair.
A recent storm sewer rehabilitation project near Groton, N.Y., is a good example of this. The project was awarded to Arold Construction Co. Inc. via an emergency bid process, and vice president Ryan Arold sees that as something of a vindication. “We were the first in this area to see the potential of the CentriPipe spincasting process, and it’s nice to see the quality of the solution being recognized,” he says.

Traffic Never Stoopped: Creative Solution Builds New Box Culvert

The Florida Department of Transportation (FDOT) knew that the big box culvert running under State Road 64, in Manatee County in downtown Bradenton, absolutely had to be replaced or rehabilitated — but how? For structural reasons, replacement seemed like the best choice, but shutting down this major commuting route was ruled out by city, county, and state officials. And the culvert itself presented major obstacles to repair since it shares space with several other utilities and is intersected by other large stormwater lines.

Handling Wet, Emergency Conditions
by Don Talend

The intersection of Routes 9 and 440 with the Garden State Parkway is one of New Jersey’s busiest and most vital cloverleaf complexes. Sinkholes began to appear there after Hurricane Irene in 2011.

A Difficult Job Made Easy
by Angus W. Stocking

New York interstate 684 connects Connecticut with New York City, and is one of the state’s busiest thoroughfares. Near the border, its six lanes of traffic are nearly always busy. Shutting down 684 for something as mundane as culvert rehabilitation isn’t really an option. When Arold Construction Company won a bid to apply centrifugally cast concrete pipe (CCCP) to 300 feet of 36-inch CMP culvert running under I-684, they expected traffic logistics would be difficult. But even so, they were surprised by the amount of driving on this project. “This was 65 mph traffic, and it never really let up,” says President Ryan Arold. “It made everything more tedious. Often, to get somewhere just 60 feet away, we’d have to crawl through the pipe, or get in the truck and drive 20 minutes to an exit and back.”

Groundbreaking Colorado Project Rehabs Culverts with CCCP
by Angus W. Stocking

Centrifugally cast concrete pipe (CCCP) is an established trenchless rehabilitation solution for large diameter sewers and culverts and is gaining ground with state departments of transportation (DOTs), which are traditionally conservative when adopting new technology. A recent culvert rehabilitation project, let by the Colorado Department of Transportation (CDOT) is groundbreaking in this regard. “There were a total of 10 large culverts in this particular project (CDOT #20158R, Region One, covering the Greater Denver Metro and Central Colorado area) and seven seemed like good candidates for CCCP,” says Paul Snyder, president of American West Construction LLC (AWC). “And since specifications were written in a way that permitted CCCP, we went for it — it’s the largest CentriPipe project in Colorado, so far.”

Stopping a 40-foot sinkhole to save a highway
by Barbara Hesselgrave

Flooding, sinkholes, danger, suspense, a race against time, and Mother Nature–this story is not the latest adventure film served up by Hollywood, but it could be! In 2013, the real-life saga of the stormwater pipe collapse of Birmingham’s Highway 280, one of Alabama’s busiest roadways, has every element to rival an action blockbuster.