Place ceiling joists directly over plates. 

 Nail theia securely to the rafters and toe nail them to 

 the plate. If the building will be subject to snow loa" 

 for ceiling joists, give particular cere to the select- 

 ion of good straight grain sticks free from knots 

 larger than 1 inch in diameter, and other imperfections 

 that would weaken the stick. Use five 20d. wire 

 nails for nailing the ceiling joist to the rafters and 

 two 20d. wire nails to toe nail them to the plate. 



ROOF. 



Rafters and other members of the roof frame 

 should be of selected straight grain lumber; 1st choice 

 Douglas fir, 2nd choice white fir, 3rd choice yellow 

 pine, free from knots and other imperfections. Too 

 much attention cannot be given to the selection of 

 the best sticks of the lumber order for rafters. 



Care should be taken to cut the rafters true 

 in order that they rest firmly on the plate and meet 

 squarely at the apex of the roof. 



Roof trusses should be well nailed with lOd. 

 nails in 1" members and 20d. nails in 2" members. Do 

 not over-nail. Five nails in surface 6" x 6" are enough, 



Roof projections should be sheeted solid 

 with 1" x 12" rough or dressed lumber. 



Rafter ends should be finished in the manner 

 illustrated by the diagram "Section". 



Use for roof covering either - 



(a).- Star A Star red cedar or redwood shingles, 

 (b).- Shakes of v/hite fir or sugar pine, 

 (c).- Galvanized iron (See B.M. Page 8) 



Lay shingles 4-fc" to weather on sheeting 8 n 

 on center. Hail them with 3d. fine galvanized shingle 

 nails. Lay the bottom course of shingles double and 

 project it l" beyond the sheeting. Allow a 1" project- 

 ion of shingles over the barge board trim. Table No. 

 B.M. -2 gives data on shakes. If shakes are used, allow 

 l" projection at eaves, and 1" projection over barge 

 board trim. 



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