PREFACE 



This report is published to provide coastal engineers with simplified 

 technical guidelines on the proper use of treated timber in coastal struc- 

 tures. This study is published under the coastal construction research 

 program of the U.S. Army Coastal Engineering Research Center (CERC) . 



The report was originally prepared in October 1969 by James Ayers and 

 Ralph Stokes for the American Wood Preservers Institute (AWPI), McLean, 

 Virginia. CERC was instrumental in identifying the need for this data 

 and encouraged the AWPI to develop the study. In 1970, AWPI published a 

 condensed version of this report in their Technical Guidelines Series 

 titled. Bulkheads: Design and Construction. CERC is publishing the 

 complete manuscript to achieve a wider distribution of these data which 

 are not readily available in other engineering publications. Permission 

 by the AWPI to publish this report is greatly appreciated. 



This report is published, with only minor editing, as prepared by 

 the authors; results and conclusions are those of the authors and are 

 not necessarily accepted by CERC or the Corps of Engineers. 



Comments on this publication are invited. 



Approved for publication in accordance with Public Law 166, 79th 

 Congress, approved 31 July 1945, as supplemented by Public Law 172, 88th 

 Congress, approved 7 November 1963. 



JAMES L. TR;!^RS 



Colonel, Corps of Engineers 



Commander and Director 



