CONTENTS 



Page 



I INTRODUCTION .^,_^ 9 



1 . Nature and Purpose of Study ..... 9 



2. Background 10 



II DESIGN CONSIDERATIONS 10 



1. Study Conditions 10 



2. Selection of Design Wave 11 



3. Effect of Perforated Exterior Wall 12 



4. Calculations 13 



5. Review of Results 13 



III CONSTRUCTION METHODS 16 



1 . Previous Work 16 



2. Overall Program 18 



3. Detailed Operations 31 



IV CONSTRUCTION COSTS 41 



1. Comments and Assumptions 41 



2. Cost Estimates and Cost Curves 46 



V CONCLUSIONS 47 



LITERATURE CITED 54 



APPENDIX - Sample Calculations for Design of 



Concrete Caisson 55 



TABLES 



1 Construction Schedule 42 



2 Estimated Basic Cost 46 



3 Modified Estimated Cost for Two Atlantic Coast 



Locations 47 



4 Estimate Details 49 



FIGURES 



Frontispiece - Offshore Breakwater-Oil Storage System 8 



1 Cellular concrete caisson for 100-foot water depth 14 



2 Precast concrete breakwater for 110- to 50-foot water 



depths 15 



