CONTENTS (Continued) 



Page 



6 . Uses in Coastal Structures 372 



XII SUMMARY 374 



1 . General 374 



2 . Materials 374 



3. Some Present Investigations of Coastal 



Construction Materials 386 



LITERATURE CITED 396 



BIBLIOGRAPHY 40 2 



APPENDIX 



A SPECIFICATIONS AND APPLICATIONS FOR STEEL SUITABLE 



FOR MARINE SERVICE 495 



B MECHANICAL PROPERTIES OF ROUND WOOD PILES TREATED 



WITH PRESERVATIVES FOR USE IN SALTWATER 407 



C GEOTEXTILE FILTER TESTS 412 



D INFORMATIONAL ORGANIZATIONS 416 



TABLES 



1 . Classes of rock slope protection 32 



2. Unified soil classification system (ASTM D-2487) 52 



3. Improvement of soils for coastal construction 58 



4. Characteristics of fill based on nature of borrow material 63 



5 . Chemical limits for mixing water 74 



6 . Permissible chloride ions 75 



7. Typical analyses of city water supplies and seawater 75 



8. Characteristics and tests of aggregates 80 



9. Maximum size of aggregate recommended for various types of 



construction 81 



10. Recommended slumps for various types of construction 95 



11. Approximate mixing water requirements for different slumps 



and sizes of aggregates 97 



12. Relationships between water-cement ratio arid compressive 



strength of concrete 98 



13. Maximum permissible water-cement ratios for air-entrained 



concrete in severe exposures 98 



14. Volume of dry-rodded coarse aggregate per unit of volume of 



concrete 100 



15 . First estimate of weight of fresh concrete 100 



16 . Techniques to obtain maximum durability 113 



17 . Strength of steel wires 116 



18. Approximate yield point and proportional limit 116 



