FARM BUILDINGS. 177 



Process : 



One-half of 30 feet = 15 feet 15 feet + 1 foot = 16 feet. 

 Three-fifths of 16 feet = 9.6 feet 



16 X 16 = 256.0 

 9.6 X 9.6 = 92.2 



348.2 



V348.2 = 18.7 (nearly), length of rafter. 



ELEVATION OF END OF ROOF WITH THREE-FIFTHS PITCH. 



626. How many shingles will be required if the barn 

 in the preceding problem is 40 feet long and the roof pro- 

 jects 1 foot at each end? 



627. How many shingles will be required for a build- 

 ing 36 feet by 52 feet, if the roof has a pitch of one-half 

 and overhangs 18 inches on the sides and 12 inches on 

 the ends ? 



628. If the length of the rafter, exclusive of the over- 

 hang, is 15 feet, and the width of the building 24 feet, 

 what is the height of the ridge above the plate? What 

 is the pitch? 



Laths. One hundred laths are tied in each bundle. 

 This number will cover 5 square yards. 



629. How many bundles of laths will be required for 

 one side of a room 15 feet long and 9 feet high. 



