TABLE OF CONTENTS. 



I >t sign of Falsework 479 



TrawliT fur Krection of Armory 479 



Instructions for the Erection of Structural 



1 1 479 



S|- < in, .it ions for the Erection of Railway 



Bridw*. . . . ^gj 



Instructions fr tin- Inspection of Bridge 

 Erection. . . 4*5 



CHAPTER XV. ENGINEERING MATERIALS. 



Iron and Steel 487 



Definitions 487 



Classification 487 



Cast Iron 488 



Definitions 488 



Malleable Castings 488 



Strength of Cast Iron 488 



Specifications for Gray- Iron Castings. . . 488 



Wrought Iron 490 



Method of Manufacture 490 



Specifications for Wrought-Iron Bars. . . 490 

 Specifications for Wrought-Iron Plates . 492 



Steel 493 



Manufacture of Steel 493 



Strength of Steel 494 



Formulas for Tensile Strength 495 



Special Steels 495 



Specifications for Structural Steel for 



Buildings 497 



Specifications for Structural Steel for 



Bridges 499 



Specifications for Structural Nickel Steel 502 

 Specifications for Boiler Rivet Steel . . . 505 

 Specifications for Billet-Steel Reinforce- 

 ment Bars 57 



Specifications for Rail-Steel Reinforce- 

 ment Bars 59 



Specifications for Steel Castings 510 



Corrosion of Iron and Steel 5'3 



Paint 5^3 



Oil Paints 



Linseed Oil. 



Lead 



Zinc 



Iron oxide. . 



Carbon 



Mixing Paint . 



Proportions 



Covering Capacity. 

 Applying tlu- Paint 

 Cleaning the Surface. . 



Shop Coat 



Finishing Coat . 

 Asphalt Paint 

 Coal Tar Paint 

 Cement and Cement Paint . 

 Portland Cement Paint. . 517 



Instructions for the Mill Inspection of 



Structural Steel. . . V7 



Instructions for the Inspection of the 



Fabrication of Strd Bridges. . 5"* 



Misrrllunrous Metals. ... 5IQ 



Alloys 59 



Timber S*> 



Stone Masonry 5* 



Concrete 5* 



Working Stresses for Reinforced Con- 

 crete 5* 



Specifications for Portland Cement 5" 



S>4 

 SU 

 SU 

 5U 

 S4 

 SIS 

 S5 

 S'S 

 S'S 

 SS 

 516 



Si* 

 56 

 S6 

 516 



CHAPTER XVI. STRUCTURAL MECHANICS. 



General Nomenclature 5 2 5 



Reinforced Concrete Nomenclature. . . . 526 



Definitions 5^7 



Forces 5 2 7 



Moment of Forces 5^7 



Couple 527 



Stress 527 



Unit Stress 5 2 7 



Ultimate Stress 5 2 7 



Tension 5 3 7 



Compression 5 2 7 



Shear. . 5*7 



Axial Stresses. . 



Simple Stress. 



\VorkingSrres8 5*7 



Factor of Safety 



Strain 



Elasticity. 



Elastic Limit 



Yield Point. 



Modulus of EI*M 



ShrarinK M.Klulusof ElMtfcfcy... 



Poiason's Ratio 



Rupture Strength 



