WIND LOAD STRESSES, CASE 5 



101 



The maximum shear in the leeward column below the knee brace 

 is H 1 = 5500 Ibs., above the knee brace is 12,800 Ibs. ; the maximum 

 moment occurs at the foot of the knee brace and is// 1 xi4Xi2 = 

 924,000 inch-lbs. 



Case 5. Wind Load Stresses: Wind Normal; Columns Fixed 

 at Base. This is Case 4 with the base of the column moved up to the 

 point of contra-flexure The maximum shear in the leeward column 

 below the knee brace is 4300 Ibs., above the knee brace is 5000 Ibs. ; the 

 maximum positive moment occurs at the foot of the knee brace and 

 negative moment at the foot of the column and is H 1 x 7 x 12 = 361,200 

 inch-lbs. For analysis see Fig. 57. 



Maximum Stresses. The stresses in the different members 

 of the bent for the different cases are given in Table V. The maximum 



TABLE V. 



