48 
INDEX 
Splices: Page 
General-- 31 
Flange— - 41 
Indirect -. 31 
Web 41 
Steel: 
General -.. 1 
Castings, materials specification. 3 
Character of fracture. 2 
Defects in material 1 
Forgings, materials specification 3 
Full-sized tests.. 1,2 
Payment for full-sized tests.— 1 
Structural, rivet and eyebar, materials speci- 
fication 1 
Structures, materials for 4 
Stiffeners: 
End, plate girders 40 
Intermediate, plate girders 41 
Storage: 
Field -- 12 
Shop 5 
Straightening material 5, 12 
Stress calculation, dimensions for 27 
Stresses: 
Combined.. 27 
Reversal of 27 
Secondary 28 
Unit - 25 
Stringers 37 
Stringers and floor-beams, end connections 37 
Struts, end. 37 
Substitutions and changes. 5 
Sway and portal bracing 38 
Symmetrical sections 30 
Tensions: 
Members 34 
Rivets 30 
Test bars: 
Failure to meet requirements 2 
Number and size 2 
Physical requirements 2 
Selection 2 
Tests, full-sized: Page 
General 1 
Cost of 11 
Payment for 2 
Thermal forces 25 
Thickness of metal, minimum 32 
Tie plates 32 
Top chords and end posts 42 
Towers and bents for viaducts 44 
Traffic classification 21 
Trusses: 
Main features 42 
Spacing 20 
Working lines and gravity axe^ 43 
Type of bridge 20 
Types of viaducts 44 
Unit stresses: 
Bearing on bridge seats. 25 
Other metals 25 
Structural grade and rivet steel... 25 
Upset ends 35 
Viaducts: 
Anchorage 44 
Batter. 44 
Bents and towers 44 
Bracing... 44 
Depth of girders 44 
Girder connections 44 
Single bents 44 
Sole and masonry plates 44 
Types 44 
Web: 
Plates 9 
Splices 9 
Stiffeners. 9 
Weighing of members 14 
Weight: 
Computed 14 
Paid for 14 
Variation 14 
Welds 10 
Width of roadway and sidewalk 18 
Working lines and gravity axes 43 
Workmanship and finish 5 
Wrought iron, materials specification 3 
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