Decision module

The design and project data is fed to the decision model which runs two components:

• Necessary - Data supplied by the user which defines the basic performance requirements for the PE100 pipe.
• Feasible - A Feasibility subroutine that through a process of elimination provides a list of feasible trenchless methods. Additional user input may be required to consider impact and risk if this data is not gathered during the Specific Project or Design Module Data process.

Running the routine will display the trenchless methods which may be applicable to your project. The routine will also display the proposed PE100 pipe characteristics.

The output from the Decision Routine is only a guide to provide the user with possible trenchless methods of installing the PE100 pipe. Those practitioners experienced in the design and installation by the possible method(s) suggested should be consulted to ensure that the project is appropriately designed and constructed to meet all the needs and performance requirements.

Decision Criteria

The decision criteria used in decision process are shown in the table below. The table can also be used to manually evaluate possibly viable trenchless methods for a project

Close-fit linings may be designed as structural (Class A) or interactive (Class B). If they are structural Class A linings then pressure is dependent on SDR of the PE100 lining. If they are interactive Class B linings so the host pipe sustains the pressure then pressure may be higher because it is not dependent on the PE100 lining.

Scroll down to start the project evaluation and decision process.