30 



drawn to scale) ; class of lumber stored and 



length of time. 



3. Plant sanitation : measures in use to keep sheds, 

 yards, and various parts of the plant in a sanitary 

 condition with reference to wood decay. 



H. Planing Mill. 



1. Building: dimensions; type of construction; 

 location with reference to remainder of plant; 

 character of construction. 



2. Equipment: type of machines used; speed and 

 capacity of each machine and of entire plant; h.p. 

 required for each machine and for plant ; applica- 

 tion of power; make ground plan of building 

 showing location of different machines. 



3. Power transmission (see power transmission, saw 

 mill). 



4. Output: patterns of finished lumber produced; 

 degree of dryness of lumber for best results ; thick- 

 ness lumber must be in rough to make different 

 patterns ; quality and size of lumber from which 

 various patterns are made ; waste in manufacture. 



5. Assorting lumber : arrangements for and methods 

 of ; grading ; assorting and handling lumber. 



6. Power Plant (see sawmill power plant). 



7. Fuel (see sawmill fuel). 



8. Labor : prepare a chart showing planing mill 

 labor, organization, duties, cost. 



I. Study and describe in detail any special forms of 

 utilization practiced in any part of the plant, whereby 

 "shorts," odd lengths, edging strips, trimmings, 

 defective lumber, or refuse are made into a commer- 

 cial product. (Instructor will provide a special out- 

 line.) 



J. Refuse Disposal : method for sawmill and planing 

 mill ; character and location of enclosed burners and 

 open pits; conveyors; exhaust system; size and 

 character of fan, r.p.m., h.p. required; length and 

 diameter of blow-pipe, volume, velocity, pressure of 



