Sharing information and knowledge is NASSCO’s core activity. That’s why we work hard to make educational resources as accessible as possible by including them on the NASSCO website (nassco.org), where visitors can learn something new every time they visit.

One of the many resources available to Web visitors is our Frequently Asked Technical Questions section, with questions collected from the field and responses from industry professionals. Below are examples of a few of the questions we have received, along with NASSCO’s objective answers:

Q. Should rehabilitation projects be contracted as design/build? This would reduce the CCTV work.

A. Design/build is used by some municipalities for larger projects. However, it may not save on CCTV work. The lines need to be televised during the design to assess the condition. The post-preparation CCTV gives the owner a visual verification that the system is ready to be rehabilitated to specified requirements. The pre-lining CCTV confirms that the line is clear of all foreign materials, and the post-CCTV inspection confirms that the liner has been installed correctly.

Q. Do you only do lateral rehabilitation after mainline rehabilitation? If you do any lateral rehabilitation prior to mainline rehabilitation, are there any special considerations?

A. Not always, but you would want to seal the connection after the main is lined. If the laterals are rehabilitated first and then the mains, there is a high risk of damaging the lateral seal when opening the lateral connection with a robotic cutter.

Q. Which is the best curing process?

A. There are three principal cure processes for mainline CIPP: hot water, steam and UV. Of these three, there is not a best process. Site conditions and pipe parameters may favor one process over the others, but it is often best to allow for multiple curing processes in the specifications and let the installer choose the best method for the installation at hand.

These are just three of hundreds of questions posted in categories that include general trenchless technology, CIPP, PACP, sewer cleaning, infiltration control/grouting, laterals and specification guidelines. In addition to the Frequently Asked Technical Questions section on nassco.org, you will find other educational resources, including webcasts, the PBS documentary Liquid Assets (which tells the story of essential infrastructure systems: water, wastewater and stormwater), resources for supplemental education, and more.

Asking good questions and sharing information is one of the best ways to help NASSCO achieve its mission to set standards for the assessment and rehabilitation of underground infrastructure and ensure the continued acceptance and growth of trenchless technologies. Visit nassco.org to learn more.

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Get the EDge  Training and Continuing Education Courses

PACP TRAINING

February 23-25 Whitestown, IN
Includes Manholes and Laterals!
Trainer: Brandon Conley
Contact Ashley Groves for more information or to register: 248-349-0904 or email pacp@dohenycompanies.com

February 26 Whitestown, IN
1 Day Recertification Course
Trainer: Brandon Conley
Contact Ashley Groves for more information or to register: 248-349-0904 or email pacp@dohenycompanies.com

March 1-3 Des Moines, IA
Includes Manholes and Laterals!
Recertifications Welcome
Trainer: Brandon Conley
Contact Ashley Groves for more information or to register: 248-349-0904 or email pacp@dohenycompanies.com

March 7 Twinsburg, OH
1 Day Recertification Course
Trainer: Brandon Conley
Contact Ashley Groves for more information or to register: 248-349-0904 or email pacp@dohenycompanies.com

March 7-9 Marriottsville, MD
Includes Manholes and Laterals!
Trainer: Ted DeBoda
Contact Dawn Jaworski for more information or to register: 410-442-7473 or email dawn@nassco.org

March 8-10 Twinsburg, OH
Includes Manholes and Laterals!
Trainer: Brandon Conley
Contact Ashley Groves for more information or to register: 248-349-0904 or email pacp@dohenycompanies.com

March 15 Marriottsville, MD
PACP User Recertification
Trainer: Ted DeBoda
Contact Dawn Jaworski for more information or to register: 410-442-7473 or email dawn@nassco.org

March 29-31 Sacramento, CA
Includes Manholes and Laterals!
A limited number of PACP Re-Certification seats available.
Contact Marilyn Shepard for more information or to register: 916-899-8961 or email mshepard1@hotmail.com

ITCP TRAINING (CIPP and Manhole)

February 1-2 Atlanta, GA (UCT)
Cured In Place Pipe
8:00 am – 5:00 pm Day 1
8:00 am – 1:00 pm Day 2
Trainer: Gerry Muenchmeyer
Contact Gerry Muenchmeyer for more information: 252-626-9930 or email gerry@muenchmeyerassoc.com

February 8-10 Honolulu, HI
Cured In Place Pipe
8:00 am – 5:00 pm Day 1 • 8:00 am – 1:00 pm Day 2 Morning
Contact Gerry Muenchmeyer for more information:
252-626-9930 or email gerry@muenchmeyerassoc.com

Manhole Rehabilitation
1:00 pm - 5:00 pm Day 2 Afternoon • 8:00 am - 5:00 pm Day 3
Courses can be taken individually.
Contact Tim Back for more information:
513-253-8461 or email timbacktwo@gmail.com
Courses can be taken individually or together in 3 days!

February 15-16 Indianapolis, IN
Cured In Place Pipe
8:00 am – 5:00 pm Day 1 • 8:00 am – 1:00 pm Day 2
Trainer: Gerry Muenchmeyer
Contact Gerry Muenchmeyer for more information:
252-626-9930 or email gerry@muenchmeyerassoc.com

March 2-3 Pittsburgh, PA
Cured In Place Pipe
8:00 am – 5:00 pm Day 1 • 8:00 am – 1:00 pm Day 2
Trainer: Gerry Muenchmeyer
Contact Gerry Muenchmeyer for more information: 252-626-9930 or email gerry@muenchmeyerassoc.com

March 24-25 Milwaukee, WI
Cured In Place Pipe
8:00 am – 5:00 pm Day 1 • 8:00 am – 1:00 pm Day 2
Trainer: Gerry Muenchmeyer
Contact Gerry Muenchmeyer for more information: 252-626-9930 or email gerry@muenchmeyerassoc.com