CONTENTS 



Page 



Introduction 3 



Division of work in 1921 3 



Equipment 4 



National Research Council Cooperation 5 



Personnel 6 



Howard Carleton Holmes an appreciation 10 



Service Records Section -. 12 



Board of State Harbor Commissioners' Report 14 



Untreated wooden piles 2 5 



Metal protective coatings 29 



Paint and batten protective coatings..:. .29 



Concrete protections ..... 31 



Creosoted piling 3 4 



Reinforced concrete cylinders 40 



Reinforced concrete piles 42 



Form of Service Record reports to the Committee 45 



Standardized service records 47 



Summary of conclusions 47 



Wharf Construction Section 49 



Specifications and inspections! 49 



Preparation and treatment .... - 50 



Handling creosoted piling ..50 



Construction 51 



Repairing damaged piles 52 



Removing breeding grounds -52 



Practical difficulties 53 



Protections Section ....53 



Chemical Section ....54 



Specifications Section , ..58 



Tentative specification covering creosoted Douglas fir 



piling and lumber for use in marine structures 60 



Notes on creosote oil specification 71 



Biological Section 72 



Action of Teredo in San Francisco Bay in 1921 73 



Factors limiting the persistence and distribution of 



Teredo navalis in San Francisco Bay in 1921 74 



Specific status of the Teredo of San Francisco Bay 81 



Future Work - ~- 82 



