Sanitary Pipeline Pilot Project
After 42-Years of Service in Lima Ohioby Jeff Boschert, Brian Browne, Kent Carlson, Steven Kayatin - 07/21/2019
The Vernon Heights Polyvinyl Chloride (PVC) gravity sanitary sewer was constructed in 1976 for Allen County, Lima, Ohio. This installation was a trial of PVC (SDR 35) as a new material in the system. Fourteen sanitary sewer lines of eight-inch pipe were installed using the material. As a trial, these flexible pipes have been inspected and documented four times over their forty two years of service.
Tips for Laying VCPby NCPI - 09/23/2016
A brochure for tips on laying VCP with English and Spanish translations.
Low Pressure Air Test Bookletby NCPI - 08/01/2016
Procedures and Tables Based on ASTM C828: Standard Test Method for Low-Pressure Air Test of Vitrified Clay Pipe Lines
2014 Updates to ASTM C12 Final Paper ASCE Pipelines 2015by Jeff Boschert, P.E., MASCE and Amster Howard, MASCE - 01/07/2014
The ASTM standard C12 'Standard Practice for Installing Vitrified Clay Pipe Lines' gives recommended methods for installing vitrified clay pipe (VCP). C12 was significantly modified for the 2014 version (C12-14).
Pilot Tube Microtunneling Chosen in Omaha Nebraska for 585’, Single Drive with Depths Reaching 50’ to Preserve Sensitive Garden Areaby David Gill, Chris Koenig, Chris Cain, Kenton Moore and Tim Papstein - 04/04/2014
Omaha, NE, stretching along the Missouri River for 7 miles, is currently under a consent order with the Nebraska Department of Environmental Quality to improve the water quality in the Missouri River. The estimated construction cost of the program, including sewer separation is $1.7 billion dollars. One projectdefined by the program was a sewer separation project, which took place in a very sensitive setting, Omaha's Lauritzen Gardens.
Importance of Haunchingby Jeff Boschert, P.E., MASCE and Amster Howard, MASCE - 01/03/2014
Presented at ASCE Pipelines, 2014 -
Testing on bedding practices that don’t include haunching reveal voids and call the assumption of uniform haunch support into question.
CLSM as a Pipe Beddingby Jeff Boschert, P.E. and John Butler - 01/08/2013
Presented at ASCE Pipelines, 2013 -
CLSM as a structural bedding material for VCP. Optimal mixes, methodologies and resultant safety factors are discussed.
Consideration for Flotation when CLSM is Used as a Bedding Materialby NCPI - 01/01/2013
No field installations using CLSM have resulted in flotation of clay pipe. CLSM is being successfully used as a bedding material for vitrified clay pipe. It simplifies the installation of pipe, reduces labor and inspection costs, allows for early backfill, is easy to place, and provides a 2.8 Load Factor.
A Short Course in Pilot Tube Microtunnelingby David Gill - 01/01/2010
PTMT is generally used for new installation of small diameter gravity flow pipelines. These machines can operate out of a minimal diameter shaft and provide pinpoint accuracy through the use of a LED target viewed down the center of the pilot tubes with a theodolite and LCD monitor.
The Pilot Tube Microtunneling (PTMT) method of pipeline installation can be used with pie outside diameters ranging from 4 to 48 inches. PTMT is a trenchless installation method for pipelines with grade and alignment precision to within 1/4 inch per 500 LF throughout the entire drive length. Due to this line and grade accuracy, this system can install product pipe by direct jacking without the use of casing. This method involves a three-step process starting with launch and reception pits strategically located to minimize surface disruption.
The Evolution of Jointing Vitrified Clay Pipeby Jack Evans and Marlene N. Spence - 08/27/1985
Advances made in the jointing of vitrified clay pipe during the last half century, illustrate the concern of the clay pipe industry to provide top quality jointing methods. Prior to this, the lack of standards for joint integrity meant testing for infiltration and Exfiltration was seldom implemented. Sewers were often designed simply to convey surface water, excessive groundwater and untreated sewage to area lakes, rivers, streams, estuaries and bays. Leakage was even designed into the system for cleaning purposes associated with high flow rates.