HEAVY TIMBER 



Table I. Timber Columns. 



(Actual size) 



Safe Loads in Tons of 2_,000 Pounds Based on the Formula of the U. S. 



Department of Agriculture, Division of Forestry. 



Square end bearing and symmetrically loaded. 



Compression 



For formula see page 65. Parallel 



to the Grain 

 Pounds per 



To use table for a unit stress other than 1,000 Ibs. sq. in., multiply value in table by 

 the raUo of that unu Sress to 1,000. For instance: for 1.200 Ibs. sq. in, multiply values in 

 table by 1.2; for 900 Ibs. sq. in., multiply by .It. 



Page sixty-six 



