Place ceiling Joists directly over plates. Hail 

 them securely to the rafters and toe nail them to the plate. 

 If the building will be subject to snow load for ceiling 

 joists, give particular oare to the selection of good 

 straight grain sticks free from knots larger than 1 inch in 

 diameter and other, imperfections that would weaken the stick. 

 Use 5 - 20d. wire nails for nailing the ceiling joist to the 

 rafters and 2 - 20d. wire nails tc toe nail them to the plate, 



ROOF. 



Material for roofs of different pitches are provid- 

 ed in the material list. Use - 



1/3 Pitch roof with 2" x 4" rafters end 1" x 6" ceiling 

 joist and collar beams at elevations under 2000 feet. 



1/3 Pitch roof with 2" x 6" rafters, 1" x 6" ceiling 

 joists and collar beams at elevations between 2000 and 3500 

 feet* 



1/2 Pitch roof with 2" at 6" rafters with 2" x 6" . 

 joists. 2" x 6" angle strut*, 1" x 6" King strut arid 1" x 6" 

 collar beams at elevations over 5500 feet. 



, ' Exception to the above should occur only where 

 snowfall is not a source of haxard. 



Roof trusses should be well nailed with lOd. nails 

 in 1 inch members and 20d. nails in 2 inch members. Do not 

 over nail. Five nails in surface 6" x 6" are enough. 



Rafters and other members of the roof frame should 

 be of selected straight grain lumber; first choice Douglas 

 fir, second choice white fir, third choice yellow pine, free 

 from knots and other imperfections* Too much attention can- 

 not be given to the selection of the best sticks of the lum- 

 ber order for rafters. 



Care should be taken to cut the rafters true in 

 order that they rest firmly on the plate, meet squarely at 

 the apex of the roof. 



Roof projections should be sheeted solid with 

 1" x 12" rough or dressed lumber. 



-12- 



