ABC OF THE STEEL SQUARE 



69 



Fig. 44. If the run of common rafter is 

 the run of the hip will be diagonal of 

 which is 17 8-16, as is plainly illustrated. 



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Fig. 44. 



Fig. 45. As the rise is 10% and run 17 8-12, 

 the length will be 20 feet, 2 inches. 



Fig. 45. 



Fig. 46. When a roof must go to a certain 

 height to strike another building at a given 

 point, as in additions, porches, etc., don't forget 

 HI getting the rise from plate to given point to 



