Report No FR0117

A COMPARISON OF TEST METHODS USED FOR ASSESSING THE END-
LOAD FORCE RESISTANCE OF MECHANICAL FITTINGS
FOR USE IN WATER PIPELINE SYSTEMS

FR0117

JULY 1990

SUMMARY

I OBJECTIVES

To compare and assess the relative merits of the performance tests currently used for measuring the resistance of mechanical fittings on polyethylene pipes to end-load forces.

II REASONS

Currently, three different test methods are used for assessing the resistance of fittings to end-load forces. This programme of work examined a selection of mechanical fittings under these test regimes to select the most suitable test for adoption in future Specifications.

III CONCLUSIONS

The results of this test programme allow the selection of a suitable test for adoption in future specifications.

IV RECOMMENDATIONS

Following the results of this test programme, it is recommended that:

  1. Test methods 1 or 2 are adopted in future specifications for mechanical fittings.
  2. The proposed testing programme for adaptors between two different materials, which is shown in Appendix B, should be verified for adoption in fittings specifications.

V RESUME OF CONTENTS

This report contains:

A summary of the test programme carried out to compare the test methods for the assessment of fittings for resistance to end-load forces.

A discussion on the results and the relative merits of the test methods.

Recommendations for the test procedure to be adopted in performance specifications for mechanical fittings.

Copies of the report are available from FWR, price 25.00, less 20% to FWR Members.