Bridge_Detailing_Manual.pdf

Bridge Detailing Manual

August 2001

Table of Contents

Chapter 1: General Information

Section 1 — Overview .......................................................................................................... 1-3

Introduction.......................................................................................................................................1-3

Section 2 — Definitions........................................................................................................ 1-4

Structures ..........................................................................................................................................1-4

Standards...........................................................................................................................................1-4

Section 3 — County/District Information............................................................................. 1-6

District and Headquarters Map .........................................................................................................1-6

County Map ......................................................................................................................................1-6

County/District Listing .....................................................................................................................1-8

Section 4 — Useful Information ........................................................................................... 1-9

General Formulas..............................................................................................................................1-9

Tables of English Decimal Values..................................................................................................1-10

Section 5 — Detailing Information..................................................................................... 1-13

Graphic Guidelines .........................................................................................................................1-13

Standard Scales ...............................................................................................................................1-13

Text Information .............................................................................................................................1-13

Abbreviations..................................................................................................................................1-16

Symbol Reference...........................................................................................................................1-16

Line Weights...................................................................................................................................1-17

Dimensions .....................................................................................................................................1-17

Commas ..........................................................................................................................................1-18

Section 6 — Reinforcing Steel............................................................................................ 1-19

Table of Standard Reinforcing Steel Bars.......................................................................................1-19

Bar Labels .......................................................................................................................................1-20

English Development Length and Splices ......................................................................................1-21

Concrete Slab Reinforcing Lapped Splices.....................................................................................1-25

English Standard Bends – 90º Anchorage Hook.............................................................................1-26

English Standard Bends – 180º Anchorage Hook...........................................................................1-27

English Standard Bends – Stirrup and Tie Bars..............................................................................1-28

Cover Requirements........................................................................................................................1-29

Section 7 — Foundations .................................................................................................... 1-30

FD Standard ....................................................................................................................................1-30

Drilled Shafts ..................................................................................................................................1-30

Concrete Piling ...............................................................................................................................1-30

Chapter 2: Layouts and Estimated Quantities

Section 1 — General Information ......................................................................................... 2-3

Bridge Layouts..................................................................................................................................2-3

Section 2 — Proper Titles for Bridge Layouts ..................................................................... 2-5

Section 3 — Layout Sheets ................................................................................................... 2-6

Bridge Layout Examples...................................................................................................................2-6

Underpass Example ..........................................................................................................................2-6

Stream Crossing Example.................................................................................................................2-7

Railroad Overpass Example..............................................................................................................2-8

Railroad Underpass Example............................................................................................................2-9

Bridge Detailing Manual

TxDOT 8/2001

Table of Contents

(continued)

Section 4 — Bridge Layout Sheet Checklist ...................................................................... 2-10

Preliminary Data Required .............................................................................................................2-10

Completed Layout...........................................................................................................................2-12

Section 5 — Normal Parameters......................................................................................... 2-16

Bridge Layout Parameters...............................................................................................................2-16

Section 6 — Plan View ....................................................................................................... 2-17

Plan View Example ........................................................................................................................2-17

Section 7 — Elevation View............................................................................................... 2-20

Elevation View Example ................................................................................................................2-20

Section 8 — Test Hole/Boring Details ............................................................................... 2-22

Test Hole Introduction ....................................................................................................................2-22

Section 9 — Typical Transverse Section ............................................................................ 2-26

Transverse Section Example ...........................................................................................................2-26

Section 10 — Title Block.................................................................................................... 2-27

Title Block Example .......................................................................................................................2-27

Section 11 — Estimated Quantities Sheet .......................................................................... 2-28

Estimated Quantities Sheet Example ..............................................................................................2-28

Section 12 — Table of Estimated Quantities...................................................................... 2-29

Table of Estimated Quantities Example..........................................................................................2-29

Bid Tolerances ................................................................................................................................2-30

Section 13 — Bearing Seat Elevations ............................................................................... 2-31

Bearing Seat Elevations Example ...................................................................................................2-31

Chapter 3: Abutments

Section 1 — General Information ......................................................................................... 3-4

Preferred Abutment Scale .................................................................................................................3-4

Section 2 — Abutment Sheet................................................................................................ 3-5

Abutment Example ...........................................................................................................................3-5

Section 3 — Sheet Checklist................................................................................................. 3-6

Plan View..........................................................................................................................................3-6

Elevation View .................................................................................................................................3-7

Main Section (“Section A-A”) ..........................................................................................................3-7

Wingwall Details (“Elevation” and “Section B-B”) .........................................................................3-8

Corner Details (“Cap” and “Backwall” Plans)..................................................................................3-8

Other Details .....................................................................................................................................3-8

Final Checks .....................................................................................................................................3-9

Section 4 — Normal Parameters and Calculations ............................................................. 3-10

Cap and Backwall Parameters and Calculations .............................................................................3-10

Wingwall Length Parameters and Calculations ..............................................................................3-12

Foundation Parameters and Calculations ........................................................................................3-13

Section 5 — Plan View ....................................................................................................... 3-15

Plan View Examples .......................................................................................................................3-15

Section 6 — Elevation View............................................................................................... 3-17

Elevation View Example ................................................................................................................3-17

Bridge Detailing Manual

TxDOT 8/2001

Table of Contents

(continued)

Section 7 — Main Section Details ...................................................................................... 3-18

Main Section Examples ..................................................................................................................3-18

Section 8 — Wingwall Details............................................................................................ 3-19

Wingwall Details Examples............................................................................................................3-19

Section 9 — Corner Details ................................................................................................ 3-21

Corner Details Examples ................................................................................................................3-21

Section 10 — Bar Details.................................................................................................... 3-23

Typical Bar Sizes for Abutments ....................................................................................................3-23

Bars A Details.................................................................................................................................3-24

Bars H Details.................................................................................................................................3-24

Bars L Details .................................................................................................................................3-25

Bars S Details..................................................................................................................................3-26

Bars U Details without Breakback..................................................................................................3-27

Bars U Details with Breakback.......................................................................................................3-28

Bars V Details.................................................................................................................................3-29

Bars wH Details ..............................................................................................................................3-30

Bars wP Details...............................................................................................................................3-31

Bars wS Details...............................................................................................................................3-31

Bars wU Details ..............................................................................................................................3-32

Bars wV Details ..............................................................................................................................3-33

Section 11 — Miscellaneous Details .................................................................................. 3-34

Bearing Seat Details........................................................................................................................3-34

Waterproofing Details.....................................................................................................................3-35

Beam Hold-Down Detail ................................................................................................................3-35

Beam Hold-Down Bracket..............................................................................................................3-36

Typical Table of Estimated Quantities............................................................................................3-37

General Notes, Title Block, and P.E. Seal ......................................................................................3-38

Chapter 4: Interior Bents

Section 1 — General Information ......................................................................................... 4-4

Preferred Interior Bent Scales ...........................................................................................................4-4

Section 2 — Simple Interior Bent Sheets ............................................................................. 4-5

Simple Interior Bent Examples .........................................................................................................4-5

2’-9” Cap Example ...........................................................................................................................4-5

3’-3” Cap Example ...........................................................................................................................4-6

Section 3 — Sheet Checklist................................................................................................. 4-7

Plan View..........................................................................................................................................4-7

Elevation View .................................................................................................................................4-8

Other Details .....................................................................................................................................4-9

Final Checks .....................................................................................................................................4-9

Section 4 — Normal Parameters......................................................................................... 4-10

Typical Elevation and Section ........................................................................................................4-10

Section 5 — Simple Interior Bent....................................................................................... 4-11

Plan View Example ........................................................................................................................4-11

Elevation View Example ................................................................................................................4-12

Main Section Examples ..................................................................................................................4-13

Column Information........................................................................................................................4-14

Bridge Detailing Manual

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TxDOT 8/2001

Table of Contents

(continued)

Section 6 — Inverted-T Cap Details................................................................................... 4-15

Plan View Example ........................................................................................................................4-15

Partial Elevation View ....................................................................................................................4-16

Section A-A Example .....................................................................................................................4-17

Section 7 — Wall Details.................................................................................................... 4-18

Web Wall Parameters and Example................................................................................................4-18

Crash Wall Parameters and Example..............................................................................................4-20

Section 8 — Bar Details...................................................................................................... 4-23

Typical Bar Sizes for Interior Bents ...............................................................................................4-23

Bars A Details.................................................................................................................................4-24

Bars B Details .................................................................................................................................4-25

Bars S Details..................................................................................................................................4-26

Bars T Details .................................................................................................................................4-27

Bars V Details.................................................................................................................................4-27

Bars Z Details .................................................................................................................................4-28

Bars wD Details ..............................................................................................................................4-29

Bars wE Details ..............................................................................................................................4-30

Bars wH Details ..............................................................................................................................4-31

Bars wU Details ..............................................................................................................................4-32

Bars wV Details ..............................................................................................................................4-33

Section 9 — Miscellaneous Details .................................................................................... 4-34

Bearing Seat Details........................................................................................................................4-34

Pedestal Bearing Seat Details .........................................................................................................4-35

Pedestal Section ..............................................................................................................................4-36

Waterproofing Details.....................................................................................................................4-37

Beam Hold-Down Detail ................................................................................................................4-38

Beam Hold-Down Bracket..............................................................................................................4-39

Table of Estimate Quantities...........................................................................................................4-40

General Notes, Title Block, and P.E. Seal ......................................................................................4-41

Chapter 5: Prestressed Concrete Beam Spans

Section 1 — General Information ......................................................................................... 5-4

Preferred Span or Multiple Span Unit Scales ...................................................................................5-4

Section 2 — Prestressed Concrete Beam Span Sheets ......................................................... 5-5

Prestressed Concrete Beam Span Examples .....................................................................................5-5

Example – Skew 15 º and Under .......................................................................................................5-5

Example – Skew Over 15 º ................................................................................................................5-6

Example – Radial Slab......................................................................................................................5-7

Example – Beam Layout...................................................................................................................5-8

Section 3 — Sheet Checklist................................................................................................. 5-9

Plan View..........................................................................................................................................5-9

Typical Transverse Section.............................................................................................................5-10

Other Details ...................................................................................................................................5-10

Final Checks ...................................................................................................................................5-11

Section 4 — Normal Parameters......................................................................................... 5-12

Prestressed Concrete Beam Span Parameters .................................................................................5-12

Section 5 — Prestressed I-Beam Spans .............................................................................. 5-13

Plan View Example ........................................................................................................................5-13

Typical Transverse Section Example..............................................................................................5-14

Bridge Detailing Manual

TxDOT 8/2001

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