viii TABLE OF CONTENTS 



Case 4. Wind Load Stresses ; Wind Normal ; Columns 



Hinged 99 



Case 5. Wind Load Stresses ; Wind Normal ; Columns 



Fixed at Base 101 



Maximum Stresses 101 



Graphic Calculation of Reactions 103 



Transverse Bent with Ventilator 103 



Transverse Bent with Side Sheds 105 



CHAPTER XII. STRESSES IN PORTALS. 



Introduction 109 



Case I. Stresses in Simple Portals : Columns Hinged. 



Algebraic Solution no 



. Graphic Solution 112 



Simple Portal, as a Three-hinged Arch 114 



Case II. Stresses in Simple Portals : Columns Fixed. 



Algebraic Solution 115 



Anchorage of Columns 115 



Graphic Solution 117 



Stresses in Continuous Portals 117 



Stresses in a Double Portal 118 



CHAPTER XIII. STRESSES IN THREE-HINGED ARCH. 



Introduction 120 



Calculation of Stresses 120 



Calculation of Reactions : Algebraic Method 120 



Calculation of Reactions : Graphic Method 121 



Calculation of Dead Load Stresses 122 



Calculation of Wind Load Stresses 125 



CHAPTER XIV. STRESSES IN TWO-HINGED ARCH. 



Introduction 127 



Calculation of Stresses 127 



Calculation of the Reactions 128 



Algebraic Calculation of Reactions. 131 



Graphic Calculation of Reactions 133 



