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UNITRACC is the independent working and information platform dedicated to the subjects of pipeline construction, pipeline maintenance, and pipeline management. Industry news regarding sewer maintenance, pipe construction, and underground infrastructure join forces with an interactive offering in e-learning comprising of technical books, virtual construction sites, and documentations as well as lessons for further education in civil engineering.
When questions about sewer maintenance, drain and pipe management arise, UNITRACC knows the answer! Come along and discover the underground!

New virtual construction site: dynamic pipe bursting
We revised our concept of the virtual construction site to fullfil the needs of mobile web usage and devices. Now we provide this very visual and detailed information without the usage of additional plugins like Adobe Flash. Test our first new virtual construction site now!
News & Articles E-Journal
Feb 15, 2019
News
Cedar Park Streamlines Customer Communication Through Sensus Solutions
The City of Cedar Park, located near Austin, Texas, is changing the way it communicates with its water customers. Instead ...
Feb 14, 2019
News
MyTana Introduces New M745 Workhorse, First Drain Machine with Variable Speed and Torque Protection
MyTana, a manufacturer and distributor of cleaning, maintenance and inspection tools for the plumber and drain cleaning markets, has released ...
Feb 13, 2019
News
Pentair Opens New Innovation Center to Advance Smart, Sustainable Water Solutions
Pentair, a leading global water treatment company, has opened a state-of-the-art innovation center in Apex, N.C., advancing the company’s commitment ...
Feb 12, 2019
News
Spencer Street Sewer Upgrade Complete
The major $25M infrastructure project to build an additional sewer along Spencer Street is now complete. Finished ahead of schedule, ...
Feb 11, 2019
News
ISG Project Recognized with Best Development Award from 1000 Friends of Iowa – A Partnership with the City of Algona
The City of Algona, Iowa was recently awarded a Best Development Award by 1000 Friends of Iowa in the Stormwater ...
Feb 08, 2019
News
Monroe Capital Supports J.F. Lehman & Company’s Acquisition of Inland Pipe Rehabilitation LLC
Monroe Capital LLC announced it acted as sole lead arranger and administrative agent on the funding of a senior credit ...
Feb 07, 2019
News
Integrated Pathways for Meeting Climate Targets and Ensuring Access to Safe Water
IIASA researchers have led work to develop new pathways showing how the world can develop water and energy infrastructure consistent ...
Feb 06, 2019
News
Aqua America Subsidiary Acquires Tredyffrin Township Municipal Authority’s Valley Creek Trunk Sewer System
Aqua America Inc. announced that Aqua Resources Inc., its unregulated subsidiary, acquired the Valley Creek Trunk Sewer System, serving area ...
Feb 05, 2019
News
Devon’s ‘largest ever’ Fatberg Discovered in Sidmouth Sewer
An unwanted Christmas present of hardened fat, oil and wet-wipes longer than six double-decker buses, has been discovered in a ...
Technical books Know-how
2005
Trenchless installation of pipelines
Trenchless Technology for Installation of Cables and Pipelines
Comprehensive and detailed discussion of trenchless construction methods and all associated fields
2005
Trenchless installation of pipelines
Practical Guideline for the Application of Microtunnelling Methods for the ecological, cost-minimised installation of drains and sewers
Offers an overview of the possibilities of trenchless installation of non-accessible drains and sewers
2004
Renovation
Rehabilitation and Maintenance of Drains and Sewers
A comprehensive overview of the state of technology in the area of sewer maintenance with an emphasis on pipe materials and joints, damage types, causes and consequences, maintenance, cleaning and inspection as well as rehabilitation.
2013
Steerable soil removal techniques
Trenchless Technology for Installation of Cables and Pipelines - 2nd Volume: Horizontal Directional Drilling (HDD)
2017
Renovation
Rehabilitation and Maintenance of Drains and Sewers (2nd edition) - 1st Chapter
A comprehensive overview of the state of technology in the area of sewer maintenance with an emphasis on pipe materials and joints.
Virtual construction sites Know-how
Line injection
Rehabilitation of a network sector in a domestic area consisting of sewers, laterals and drain pipes, manholes and buried surface water drains by means of the fill and drain system (flood grouting)
In this virtual construction site the rehabilitation of a network sector in a resident area consisting of sewers, laterals and drain pipes, manholes and buried surface water drains, is carried out with the help of the flooding process. This process ...
Microtunnelling with hydraulic spoil removal
Trenchless installation of a sewer DN 600 consisting of reinforced concrete jacking pipes by means of microtunnelling
In this virtual construction site, the trenchless installation of a sewer DN 600, consisting of reinforced concrete jacking pipes, by means of microtunnelling with hydraulic spoil removal in soil with groundwater is presented.
Cured-in-place lining process (private domain sewers)
Renovation of a defective vitrified clay lateral DN 150 with a length of 6 m by means of the cured-in place lining method
In this virtual construction site, the renovation of a defective vitrified clay lateral DN 150 with a length of 6 m is shown on the model of the Houseliner® process (hydraulic variant).
Optical sensory inspection
Localisation of leaks with the aid of sewer probe based on measuring electrical resistance
In this virtual construction site, the localising of leaks in a vitrified clay sewer section DN 600 with a section length of 10 m using the sensor S-100 of the Seba Dynatronic company (capability DN 500 up to a maximum ...
Coating by machine
Renovation of a cast iron pipe DN 1000 with a length of 50 m by spray lining process
In this virtual construction site, the renovation of a cast iron pipe DN 1000 with a section length of 50 m in the spray lining process is presented. This process belongs to the group of coating processes.
Lining with discrete pipes, short pipes
Renovation of a defective sewer section with a nominal size DN 400 and a length of section of 50 m by means of discrete pipes in the pushing-in process
In this virtual construction site, the renovation of a defective sewer section with discrete pipes in the pushing-in process is presented. The sewer is composed of concrete pipes of the nominal size DN 400 with a length of section of ...
Deformation process
Renovation of a defect water pipeline made of grey cast iron pipes of the nominal size DN 300 by means of the deformation process
In this virtual construction site, the renovation of a defect water pipeline made of grey cast iron pipes of the nominal size DN 300 by means of the deformation process is presented. This process belongs to the group of lining ...
Grouted-in-place lining process
Renovation of a defective sewer section consisting of concrete pipes DN 500 with lateral and longitudinal cracks and pipe fracture by means of the grouted-in-place lining process
In this virtual construction site, the installation of a Trolining Preliner system in a sewer section consisting of concrete pipes DN 500, with lateral and longitudinal cracks and pipe fracture, is presented.
Pipe bursting, pneumatic
Replacement of a pipeline consisting of vitrified clay pipes DN 300 using the pneumatic pipe bursting accompanied by a simultaneous pulling-in of a PE-HD continuous pipe
In this virtual construction site, the replacement of a defective pipeline section consisting of vitrified clay pipes DN 300 in the trenchless method using the pneumatic pipe bursting accompanied by a simultaneous pulling-in of a PE-HD continuous pipe, DN 300 ...
Short hose
Repairing of a defect lateral connection of a lateral sewer consisting of PVC pipes DN 125 and leading into a concrete sewer DN 300 by means of a short liner
In this virtual construction site, the repairing of a defect lateral connection of a lateral sewer is shown. The lateral connection consists of PVC pipes DN 125 and leads in a concrete sewer DN 300. The used repairing method is ...
Horizontal Directional Drilling
New installation of PE-HD pipes by means of horizontal directional drilling
In this virtual construction site, the different steps of a new installation of PE-HD pipes by menas of horizontal directional drilling are shown.
Complete segmental lining
Rehabilitation of a wastewater impounding basin by means of vitrified clay plates
In this virtual construction site, the rehabilitation of a wastewater impounding basin by means of the KeraLine system is presented.
Cured-in-place lining process (sewers)
Renovation of a defective sewer section consisting of vitrified clay pipes DN 300 with cracks, fractures and leaking joints by means of the cured-in place lining method with light hardening
In this virtual construction site, the renovation of a vitrified clay pipe with cracks, fragmented pipes and leaking joints exemplary by means of the Berolina-Liner system is shown. This process belongs to the group of lining with site manufactured and ...
Short hose
Repair of a 6.0 m long defective sewer sector, consisting of concrete pipes DN 500 with a short hose
In this virtual construction site, the repair of a 6.0 m long defective sewer sector, consisting of concrete pipes DN 500 with a short liner is presented. This process belongs to the group of repair processes and the sub-group dealing ...
Spirally-wound pipe lining process
Renovation of a defective sewer section consisting of concrete pipes DN 400 with a section length of 60 m by means of lining with spirally wound pipes
In this virtual construction site, the renovation of a defective sewer section consisting of concrete pipes DN 400 with a section length of 60 m by means of spiral lining is presented. This process belongs to the group of renovation ...
Vehicles and technology
High pressure water jetting with a combined vehicle with water treatment technique
In this virtual construction site, the sewer cleaning vehicle "SUPER 2000" by the company Wiedemann and Reichardt GmbH is shown. This vehicle was constructed as a combined vehicle especially for water treatment. An essential component of the vehicle is a ...
Leaktightness testing
Section leaktightness testing with water as a testing medium to DIN EN 1610 is illustrated by a 27 m long sewer section of concrete pipes DN 800
In this virtual construction site, the leaktightness testing with water pressure according to EN 1610 is shown. This standard is applicable for new and rehabilitated sewers. The section of the sewer is assumed to be 27 m long and consists ...
Robot
Repair of an unprofessionally installed connection nozzle DN 150 of vitrified clay with visible soil by means of the robot method
In this virtual construction site, the repair of an unprofessionally installed nozzle DN 150 of vitrified clay with the soil visible is presented on the model of the KA-TE robot. The sewer consists of concrete pipes DN 400, the section ...
Cured-in-place lining process (sewers)
Renovation of sewer section consisting of a concrete pipe DN 300 with a length of 50 m by means of the cured-in place lining method
In this virtual construction site, the renovation of a defective sewer section consisting of a concrete pipe DN 300, length 50 m by means of cured in place lining is presented. This process belongs to the group of lining with ...
Cured-in-place lining process (private domain sewers)
Renovation of a defective lateral consisting of vitrified clay pipes DN 125 with a length of 8 m by means of the cured-in place lining method
In this virtual construction site, the renovation of a defective private domain sewer and a defective lateral of vitrified clay pipes DN 125 with a length of 8 m by cured-in-place lining on the example of the Epros DrainLiner process ...
Documentations Know-how
2008
Spirally-wound pipe lining process
Spirally-wound pipe lining with self-propelled winding machine
Renovation of a concrete sewer DN 1200 by lining with site-manufactured pipes by means of a self-propelled winding machine (RotaLoc)
2008
Top hat sleeve
Lateral connection repair
Recovery of lateral connections DN 150 of a sewer DN 250 that was rehabilitated by CIPP using the DrainLCR system
2007
Grouted-in-place lining process
Grouted-in-place lining process
Renovation of an ovoid cross section DN 2250/1800 by the TROLINING®-double system without Preliner.Task promoted by MUNLV NRW
2006
Open cut method, new construction and replacement
Modernization of small sewage treatment plant
Modernization of a three-chamber dry well using the open-cut method by means of the new installation of an SBR-unit
2005
Pipe bursting, static
Static Pipe Bursting
Replacement of a vitrified clay sewer DN 300 and DN 400 by static pipe bursting with PE-HD pipes OD 450 and OD 500
2005
Grouted-in-place lining process
Grouted-in-place lining process for potable water pipelines
Renovation of a potable water pipeline DN 100 with the Cempipe process
2005
Lining with discrete pipes, short pipes
Discrete pipe process
Renovation of a ovoid brickwork cross section DN 600/900 with the GRP discrete pipe process
2004
Repair by trenchless method
Joint rehabilitation and crack injection
Repair of masonry sewage collectors and manholes while retaining the original masonry by rehabilitation of the joints and crack injection
2004
Manhole rehabilitation
Manhole top rehabilitation and releveling
Replacement of a defective manhole top and repair of the surrounding road surface
2004
Manhole rehabilitation
Manhole restoration by means of manhole frame remover
Manhole restoration by means of manhole frame remover
2004
Cured-in-place lining process (sewers)
Cured-in-place process
Renovation of a vitrified clay sewer DN 250 to DN 350 with the KM-Inliner method
2004
Stainless steel sleeve
Repair with stainless steel sleeves
Repair of HD-PE drain pipe of nominal sizes DN 150 to DN 350 with the stainless steel 'Stuttgarter Sleeve'
2004
Cured-in-place lining process (sewers)
Cured-in-place process
Renovation of a surface water sewer DN 300 by the Inpipe process
2004
Cured-in-place lining process (sewers)
Cured-in-place process
Renovation of a vitrified clay sewer nominal size DN 200 by the DS CityLiner process
2004
Line injection
Fill and drain system (Flood grouting)
Repair of a sewer DN 150 by the Sanipor fill and drain system (flood grouting)
2003
Partial segmental lining
Invert segmental lining with vitrified clay elements
Renovation of a circular cross section DN 1200 by partial lining with KeraLine elements
2003
Grouted-in-place lining process
Grouted-in-place lining process
Renovation of an ovoid cross section DN 1000/1500 by the TROLINING® preliner system
Modules E-Learning
2013
Cleaning
D-05 - Maintenance of drain and sewer systems - Cleaning I
Cleaning is one of the most important maintenance measures when it comes to ensuring a continuous performance of drainage systems. This module covers essential knowledge regarding the cause and effect of deposits, and provides a strategic approach to the development ...
2013
D-05 - Maintenance of drain and sewer systems - Cleaning I (DEMO)
Cleaning is one of the most important maintenance measures when it comes to ensuring a continuous performance of drainage systems. This module covers essential knowledge regarding the cause and effect of deposits, and provides a strategic approach to the development ...
2013
Cleaning
D-06 - Maintenance of drain and sewer systems - Cleaning II
Cleaning is one of the most important maintenance measures when it comes to ensuring a continuous performance of drainage systems. This module expands on the topics covered in module "D-05 cleaning I", by providing further knowledge on the applications and ...
2012
Trenchless installation of pipelines
D-21 Utility Tunnelling
The installation of supply and disposal lines is still mostly performed using the open cut method consisting of digging a trench, laying the pipe under the protection of shoring, and subsequently backfilling the trench. Given the many disadvantages associated with ...
2014
Replacement by trenchless method
D-15 - Replacement of sewers and drains
Replacement refers to the installation of new sewers and drains in place of existing pipelines, where the new pipeline takes over the functions of the old sewer or drain. The replacement process is subdivided into three methods: "open cut method", ...
2015
Planning, dimensioning and construction
D-01 - Wastewater collection systems and their significance in water management
The overall challenge of each generation that takes over responsibility for a drain and sewer system is to construct new wastewater collection systems or to expand already existing ones, and to inspect, repair, renovate and replace, or rather adapt, them ...
2015
Replacement by trenchless method
C-08 - Replacement of water, wastewater and gaspipelines
Replacement refers to the installation of new water, wastewater and gaspipelines in place of existing pipelines, where the new pipeline takes over the functions of the old water, wastewater and gaspipelines. The replacement process is subdivided into three methods: "open ...
2016
Replacement by trenchless method
C-08 (US) - Replacement of Water, Wastewater and Gas Pipelines
Replacement refers to the installation of new water, wastewater and gaspipelines in place of existing pipelines, where the new pipeline takes over the functions of the old water, wastewater and gas pipelines. The replacement process is subdivided into three methods: ...
2017
New construction, open cut method
D-02 (US) Installation of water pipes, drains and sewers using the open cut method
The installation of water pipes, in particular, drains and sewers is worldwide in large part performed using the open cut method. This at first glance "simple" construction method is actually highly complex when used in urban areas and at large ...
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UNITRACC Hint
New E-Learning Module: C-08 (US) Replacement of Water, Wastewater and Gas Pipelines
The focus of this module is the trenchless replacement method of pipelines by the means of pipe bursting, gallery techniques, and pipe extraction. In addition to the replacement method and process description, this module discusses the areas of application and limits, the advantages and disadvantages as well as possible rehabilitation errors and options for quality assurance.
The module combines this knowledge into 6 lessons:
- Pipe Bursting Basics
- Pipe Bursting
- The Welding of Plastic Pipes
- Pullback of Pipelines
- Gallery Techniques
- Pipe Extraction
For further information, please download the Module Description (pdf-File).