CONTENTS 



Page 



PREFACE 1 



CONVERSION FACTORS, NON-SI TO SI (METRIC) UNITS OF 



MEASUREMENT 3 



PART I : INTRODUCTION 5 



Background 5 



Purposes of Model Study 5 



PART II: THE MODEL 7 



Des ign of Model 7 



Test Facilities and Equipment 8 



Model Construction and Testing Procedures 8 



PART III : TESTS AND RESULTS 11 



Plan 1 , 4-ton Dolosse 11 



Plan 2 , 2 . 3- ton Dolosse 14 



Plan 3 , 9- to 20- ton Armor Stone 15 



PART IV: CONCLUSIONS 17 



PART V: DISCUSSION 18 



TABLES 1-4 

 PHOTOS 1-43 

 PLATES 1-3 



