xiii 



TABLE OF CONTENTS. 



Art. 152. Maximum Floor Beam Concentration and 



Stress in the Hip Vertical 296 



" 153. Stresses in a Pratt Truss for Wheel Loads. . . 297 

 ' ' 154. Maximum Stresses in Trusses with Sub-Panels 305 

 " 155. Calculation of Moments and Shears by Wheel 



Loads 306 



" 156. Equivalent Uniform Loads 311 



" 157. Graphical Methods 312 



Chapter XIV. Stresses in Bridges from Horizontal Forces. . . 316 



Art. 158. Wind Loads 310 



1 ' 159. Lateral Systems 317 



' ' 160. Deck Plate Girder Lateral Systems : J 1 7 



" 161. Through Plate Girder and Pony Truss Lateral 



Systems 318 



" 162. Deck Bridge Lateral Systems 318 



" 163. Through Bridge Lateral Systems 321 



" 164. Portal Bracing 322 



" 165. General Case of Portal with Columns Fixed 



at Both Ends 324 



".* 166. General Case of Portal with Posts Fixed 



at Top and Partially Fixed at the Bottom. 329 

 '' 167. General Case of Portal with Columns Par- 

 tially Fixed at Both Ends 



' ' 168. Particular Cases of Stresses in Portal Bracing 334 

 " 169. Case No. 1, Simple X Bracing.. . 



" 170. Case No. 2, Plate Girder Portal . 342 



11 171. Case No. 3, Latticed Portal 344 



" 172. Case No. 4, Knee Braced Portal 345 



11 173. Case No. 5, Latticed Portal for Shallow 



Trusses 



" 174. Case No. 6, Plate Girder Portal, Knee Braced 348 

 " 175. Plate Girder Portal for Shallow Trusses. . .350 

 " 176 Stresses in Railway Bridges having Curved 



Track. 350 



