CONTENTS 



Page 



CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (SI) 7 



SYMBOLS AND DEFINITIONS 8 



I INTRODUCTION 9 



II THE PIPE-TIRE BREAKWATER 10 



1 . Breakwater Modules and Components 12 



2 . Construction Procedures 16 



3 . Breakwater Buoyancy 20 



4. Cost Estimates 23 



III EXPERIMENTAL SETUP AND PROCEDURES 24 



1. Test Facility and Instrumentation 24 



2 . Mooring System 28 



3. Test Procedure and Conditions 31 



IV DATA REDUCTION AND ANALYSIS 32 



1. Dimensional Analysis 32 



2 . Data-Reduction Procedures 34 



V EXPERIMENTAL RESULTS 37 



1 . Wave Transmission Data 37 



2 . Mooring-Force Data 45 



VI SUMMARY AND CONCLUSIONS 50 



LITERATURE CITED 53 



APPENDIX 



A TABULATED TEST RESULTS 55 



B FORCE MEASUREMENT CORRELATION (PT-1) 65 



C DETAILED WAVE TRANSMISSION DIAGRAM 74 



TABLES 



1 Cost estimates of PT-Breakwater components 23 



2 Compliance of mooring systems 29 



3 Summary of test conditions 31 



4 Summary of mooring-f orce data 46 



FIGURES 



1 PT-Breakwater field installation 11 



2 Typical PT-Breakwater module with tire-armored pipes 11 



4 



