1. Inspection
The pipeline is inspected to determine if the method is applicable.
2. Determining the lining size
Based on the inspection, the lining size is determined. The standard is to select
a size that would maintain flow characteristics. Size could be adjusted according
to host pipe conditions, such as steps and meandering.
3. Lining
The winding machine is positioned in the channel of the existing access chamber. Profile is fed to the machine from the center of a spool. The machine then rotates and advances down the pipeline. As the machine rotates it spirally winds the profile to form a pipe behind it. With this process, there is no friction between the liner and the host pipe. As a result, long liners can be formed.
Assembling the
winding machine
Lining
(manhole)
Lining
(host pipe)
Lining
(live sewage)
4. Floating Prevention
Floating prevention jigs are installed before grout is injected. Grouting
gives the liner buoyancy, and grout injection pressure causes deformation
of the liner. These supporting jigs will preventing the liner from floatation
and deformation.
5. Grouting
After the liner is formed and the floating prevention jigs are installed inside the existing pipe, the gap between the liner and the existing pipe is filled with a specially developed low viscosity mortar.
6. Lateral Connections
After completion of the grouting process an initial hole is cut through the profile by feeding a cutter down the lateral pipe. The opening of the lateral connection is completed using a cutting machine inside the main line.
7. Finishing
The ends of the pipelines and connections are finished, and the construction work is completed.
1. Inspection 
2. Determining the lining size 
3. Lining 
4. Floating Prevention 
6. Lateral Connections 
8.
Inside the rehabilitated pipeline