HEAVY TIMBER MILL CONSTRUCTION BUILDINGS 



near top to receive the post cap, and also at the bottom where 

 it passes through the floor. 



Finish on Girders, beams, floors, or posts should not be 

 Woodwork painted, oiled or plastered until they have be- 

 come fully seasoned. This time is usually be- 

 tween two and three years. Wood finish without concealed 

 spaces may be used with safety in offices, etc., but varnish and 

 shellac finishing coats are called objectionable by insurance 

 underwriters. Ordinary paint is not objectionable. 



Interior of Semi-Mill Construction Building. 



(Lockwood, Greene & Co., Engineers, Boston.) 



Calculations The method of determining the amount of load 

 for Posts carried by a given post, percentage of load from 

 posts above carried by the lower posts, form- 

 ulas for design of posts, and unit compressive strength of 

 various kinds of timber will be found in an appendix to this 

 bulletin. 



Page thirty 



