viii CONTENTS 



SECTION XIV 

 SIMPLE STRUCTURES 



PAGES 



Composition and resolution of forces. Conditions of equilibrium 

 of a system of coplanar forces. Equilibrium polygon. Applica- 

 tion of equilibrium polygon to determining reactions. Equilibrium 

 polygon through two given points. Equilibrium polygon through 

 three given points. Application of equilibrium polygon to calcula- 

 tion of stresses. Relation of equilibrium polygon to bending- 

 moment diagram. Structures : external forces. Structures : joint 

 reactions. Structures : method of sections Applications . . . 176-204 



ANSWERS TO PROBLEMS 205-207 



INDEX . 209-210 



