CONTENTS. 



PAGB 



INTRODUCTION. . iii 



CHAPTER I. 



HISTORICAL: EXPLANATORY AND STATISTICAL i 



Brief Mention of Ancient and Modern Works Methods of Distri- 

 bution Reservoir System Discussed Introduction of Metallic 

 Reservoirs Present Extent and Character Excentricity of Design 

 Tendency of Modern Practice Record of Failures. 



CHAPTER II. 



THE CHEMICAL AND PHYSICAL PROPERTIES OF STRUCTURAL METAL. 32 



Wrought Iron Physical Difference between Iron and Steel Effect 

 of Heating Bessemer Steel Open-hearth Steel Effects of Phos- 

 phorus Manufacturers' Standard Specifications Work of Inter- 

 national Association. 



CHAPTER III. 



STRUCTURAL METALS go 



The Use of Iron The Change to Steel Classification of Failures 

 Relative Merits Comparative Cost Comparative Homogeneity 

 and Strength of Bessemer and Open-hearth Steels Suitable Grades 

 for Structural Work Distinguishing Terms Chemical Specifica- 

 tions Inspection. 



vii 



