Exposure Factor (Ce): 

Table 72 ASCE 705 page 92 
Thermal Factor (Ct): 

Table 73 ASCE 705 page 93. 
Importance Factor (I): 

Table 74 ASCE 705 page 93 
Ground Snow Load (pg): 

psf 
Horizontal Distance Eave to Ridge (W) 

feet 
Roof Surface type: 

ASCE 705 Section 7.4 page 81 and 82 
Enter Roof Slope: 

/12 
Roof Slope in degrees: 


(S): 


Balanced Loads 


Pf = 0.7(Ce)(Ct)(I)(pg) 


Flat Roof Snow Load Pf = 

psf Section
7.3 and 7.3.4 minimums page 81 



Modifier = 

Section 7.3.4 Minimum Values of Pf 



SlopedRoof Snow Loads (Ps): 


Roof Slope Factor (Cs): 


Ps = 

psf 
Unbalanced Snow Loads 


Unbalanced Snow Load for W <= 20 = 

psf Rafter System Only!!! 

Unbalanced Snow Load for All Other Roofs or Rafters > 20 ft. 