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COMMITTEE SPECIFICATIONS 



COVERING CREOSOTED DOUGLAS FIR PILING AND LUMBER 



FOR USE IN MARINE STRUCTURES 



Prepared by F. D. Mattos and R. H. Rawson 

 Adopted by the Committee 1921, Revised 1924 



MATERL\LS TO BE TREATED 

 Green and Water Stored Piling 



QUALITY 



Piles shall be cut from sound trees; shall be close grahied and solid, free from 

 defects, such as injurious ring shakes, large and unsound or loose knots, decay or other 

 defects which in the opinion of the inspector may materially impair their strength 

 or durability. 



straightness 



Piles shall have a uniform taper and none with swell or twisted butts will be 

 accepted. Piling shall be so straight that a straight line drawn from butt to tip will 

 not deviate more than one (1) inch for each ten (10) feet in length; that is to say, 

 piling seventy (70) feet in length may deviate seven (7) inches from a straight line 

 drawn from butt to tip. Piling with short or reverse bends, or kinks, will not be 

 accepted. 



TWISTS 



No piling with spiral grain will be accepted which has one complete twist in a 

 length of forty (40) feet or less. 



TRIMMING 



Piling shall ha\e all bark and inner skin removed. Knots shall be cut flush, butts 

 and tips trimmed sciuarely before treatment, and in case piling has been stored in sea 

 water, barnacles or similar forms of sea life shall be removed. Piling showing any 

 attack of insects or marine borers will not be accepted. 



SAPWOOD REQUIREMENTS 



Only such piling shall be accepted for treatment as conforms with the following 

 minimum sapwood requirements: 



1. For a specified absorption ranging from twehe (12) pounds to tourteen 

 (14) pounds of creosote oil per cubic foot of timber, the sapwood shall not be less 

 than one (1) inch in depth. 



2. For a specified absorption of sixteen (16) pounds of creosote oil per cubic 

 foot of timber, the sapwood shall not be less than one and one-quarter (IM) 

 inches in depth. 



E.XCEPT THAT 



3. Piling which does not meet the sapwood requirements specified above 

 will be accepted, provided that the creosoting company will in each case guarantee 

 the minimum penetration of creosote oil specified. 



SIZES 



Shall be as specified by the purchaser. For information, the following appropriate 

 size combinations of length and of butt and top diameters are listed by groups, of 



