ROOF. 



Material Tor roofs of different pitches is 

 provided in the lists. Within the respective ranges of , , 

 elevations stated, use the roof recommended. Exception to 

 the above should occur only where snowfall is not a 

 source of hazard ac on the southern Forests and on the 

 Modoc . 



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 can not 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 

 oraer that they rest firmly on the plate, meet squarely 

 at the apex of the r oof . 



Rafters should be braced as shov/n in the plan. 

 Dimensions of material for braceo to be used will vary 

 with the different types of roof. 



Roof projections should be sheeted solid with 

 1" x 12" rough or dresred 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 white fir or Sugar pine. 

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



Lay shingles 4^-" to weather on sheeting 8" on 

 center. Kail 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 

 1-|-" projection at eaves and 1" projection over barge 

 board trim. 



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