vi TABLE OF CONTENTS 



PART II. STRESSES. 



CHAPTER V. GRAPHIC STATICS. 



Equilibrium 22 



Representation of Forces 22 



Force Triangle 22 



Force Polygon 24 



Equilibrium of Concurrent Forces 24 



Equilibrium of Non-concurrent Forces 25 



Equilibrium Polygon 26 



Reactions of a Simple Beam 29 



Reactions of a Cantilever Truss 30 



Equilibrium Polygon as a Framed Structure 31 



Graphic Moments 32 



Bending Moments in a Beam 33 



To Draw an Equilibrium Polygon Through Three Points 33 



Center of Gravity 34 



Moment of Inertia of Forces . 35 



Moment of Inertia of Areas , . 38 



CHAPTER VI. STRESSES IN FRAMED STRUCTURES. 



Methods of Calculation 39 



Algebraic Resolution 40 



Graphic Resolution 42 



Algebraic Moments 44 



Graphic Moments 46 



CHAPTER VII. STRESSES IN SIMPLE ROOF TRUSSES. 



Loads 4^7 



Dead Load Stresses 47 



Dead and Ceiling Load Stresses 48 



Snow Load Stresses 49 



Wind Load Stresses. . : 49 



Wind Load Stresses : No Rollers 50 



Wind Load Stresses : Rollers 51 



Concentrated Load Stresses 53 



