250 



STATE BOARD OF AGRICULTURE. 



sufficient pilch to tlie roof the front would need to be excessively high 

 thus causing greater cost of construction. 



Another type of roof frequently used is the gable form which does 

 away with the long span, thus being adapted for use on wider build- 

 ings. In addition it affords a greater pitch which is desirable in the 

 use of shingles. The objections to its use are that it is necessary to 

 have the back side of the house as high as the front, thus causing a 

 waste of material upon the back, ends and partitions. 



The combination roof is in reality a roof combining the features of 

 the shed and gable roof having unequal spans, the shorter usually be- 

 ing about one-third the length of the longer. This roof has the ad- 

 vantage of both types in that it can be used on a house wider than the 



Fig. 6. Types of roofs. 



shed roof type, affording a steeper pitch with less cost for siding. In 

 addition the back side of the building is no higher than with the shed 

 roof thus making it much more economical to construct than the gable 

 roof. It should be remembered that as long as the pitch of the roof 

 remains unchanged the material used for all three styles of roofs is 

 exactly the same and the saving in material occurs in the sides, ends 

 and partitions. Bearing this in mind an examination of figure six 

 will show the desirable features of this type of roof as compared to the 

 shed or gable when used on a house sixteen feet wide and having one 

 foot rise to every three feet horizontal run. The dotted line shows the 

 average angle of the sun's rays for Dec. 21, which indicates the neces- 

 sity of placing the windows 6 feet 6 inches high in order for the sun- 

 light to reach the far side of the house within. The front of the house 



