CONTENTS 



Page 



CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (SI) 5 



SYMBOLS AND DEFINITIONS 6 



I INTRODUCTION 7 



1. Volume and Immersed Weight Rates of Longshore 



Transport 7 



2. Purpose 8 



II UNIT WEIGHT OF SAND 8 



III PRESENT USE OF IMMERSED WEIGHT CALCULATION 10 



IV RESULTS 12 



V CONCLUSIONS 12 



LITERATURE CITED 15 



TABLE 



Ranges of volume concentration, a' , and unit weights of 



sand, y 9 



FIGURES 



1 Two sets of longshore transport data from protected waters 



related to SPM design curve 11 



2 Use of l£ in present practice 13 



