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AISC D825 21W 2021

$32.50

Design Guide 25: Frame Design Using Nonprismatic Members, Second Edition

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AISC 2021
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The newly updated AISC Design Guide 25: Frame Design Using Nonprismatic Members, developed in conjunction with the Metal Building Manufacturers Association (MBMA), presents a comprehensive approach to the design of frames using nonprismatic members within the context of the 2016 AISC Specification for Structural Steel Buildings. Extensive design examples are included in this 400+ page volume.

PDF Catalog

PDF Pages PDF Title
1 Frame Design Using Nonprismatic Members
4 Copyright
5 Authors/Acknowledgments/Dedication
6 Preface
7 Table of Contents
13 Chapter 1 Introduction

1.1 Basis for Recommendations
14 1.2 Scope
16 1.3 Benefits of Web-Tapered Members

1.4
Fabrication of Web-Tapered Members
1.5 General Notes on This Design Guide
17 Chapter 2 Literature Review and Summary of Recommended Methods

2.1 Previous Research
24 2.2 Relationship to and Expansion upon Prior AISC Provisions for Web-Tapered Members
27 Chapter 3 Design Basis

3.1 Key Terminology
28 3.2 Limit States Design
31 Chapter 4 Stability Design Requirements

4.1 Key Terminology
33 4.2 ASCE/SEI 7 and IBC Seismic Stability Design Requirements
34 4.3 AISC Stability Design Requirements
35 4.4 AISC Stability Design Methods
38 4.5 Common Parameters
40 4.6 Detailed Requirements of the AISC Stability Design Methods
47 Chapter 5 Member Design

5.1 Key Terminology

5.2 Axial Tension
48 Example 5.1 – Axial Tension Resistance, Tapered Members with Bolt Holes
50 5.3 Axial Compression
67 Example 5.2a – Axial Compressive Resistance, Doubly Symmetric, Linearly Tapered Member with Simple Bracing
83 5.4 Flexure
96 Example 5.2b – Flexural Resistance, Doubly Symmetric, Linearly Tapered Member with Simple Bracing
115 5.5 Combined Flexure and Axial Force
120 Example 5.2c – Combined Axial Compression and Flexure, Doubly Symmetric, Linearly Tapered Member with Simple Bracing
123 5.6 Shear
130 Example 5.3 – Shear Strength of a Linearly Tapered Member
142 5.7 Consideration of Concentrated Forces on Flanges and Webs

5.8 Additional Member Examples
143 Example 5.4a – Axial Compressive Resistance, Singly Symmetric, Linearly Tapered Member with Unequal Flanges and Intermediate Bracing Only on One Flange
158 Example 5.4b – Flexural Resistance, Singly Symmetric, Linearly Tapered Member with Intermediate Bracing on the Tension Flange
173 Example 5.4c – Combined Axial Compression and Flexure, Singly Symmetric, Linearly Tapered Member with Intermediate Bracing on Tension Flange
177 Chapter 6 Frame Design

6.1 Planar First-Order Analysis of Frames
179 6.2 Planar Second-Order Analysis of Frames
191 6.3 In-Plane Analysis and Design Considerations for Single-Story Clear-Span Frames
194 6.4 Serviceability Considerations

6.5 Overview of System Design Examples
197 Chapter 7 System Design Example 1 Clear-Span Monoslope Building Frame

7.1 Material and Geometry
199 7.2 Focus of This Example
200 7.3 Loading
201 7.4 Planar Frame Analysis Discretization
203 7.5 Calculation of Required Strengths from Planar Load-Deflection Frame Analysis
205 7.6 Calculation of the System (gamma)ex by In-Plane Elastic Buckling Analysis
207 7.7 Estimation of System (gamma)ex Given First- and Second-Order Analysis Displacements
208 7.8 Calculation of In-Plane (gamma)ex for Use with the Direct Analysis Method
210 7.9 Out-of-Plane Elastic CATB and LTB Analysis Calculations
214 7.10 Manual Estimation of (gamma)eCAT and (gamma)eLTB for Selected Doubly Tapered Roof Girder Design Segment
220 7.11 Summary of Elastic Buckling Load Ratios
221 7.12 Axial Compressive Strength Ratio
224 7.13 Flexural Strength Ratios
228 7.14 Unity Checks for Combined Flexure and Axial Force

7.15 Assessment Via Inelastic Buckling Analysis
231 Chapter 8 System Design Example 2 Clear-Span Crane Building Frame

8.1 Material and Geometry

8.2 Focus of This Example
233 8.3 Loading
234 8.4 Planar Frame Analysis Discretization
236 8.5 Calculation of Required Strengths from Planar Load-Deflection Frame Analysis
237 8.6 Calculation of System (gamma)ex by In-Plane Elastic Bucklying Analysis
238 8.7 Estimation of System (gamma)ex Given First- and Second-Order Analysis Displacements
242 8.8 Calculation of In-Plane (gamma)eL for Use with Direct Analysis Method
243 8.9 Out-of-Plane Elastic CATB and LTB Analysis Calculations
247 8.10 Manual Estimation of (gamma)eCAT and (gamma)eLTB for Bottom Righthand Column Design Segment
254 8.11 Summary of Elastic Buckling Load Ratios
255 8.12 Axial Compressive Strength Ratios
259 8.13 Flexural Strength Ratios
264 8.14 Unity Checks for Combined Flexural and Axial Force

8.15 Assessment Via Inelastic Buckling Analysis
267 Chapter 9 System Design Example 3 Modulary Crane Building Frame

9.1 Material and Geometry

9.2
Focus of This Example
269 9.3 Loading
271 9.4 Planar Frame Analysis Discretization
272 9.5 Calculation of Required Strengths from Planar Load-Deflection Frame Analysis
274 9.6 Calculation of System (gamma)ex by In-Plane Elastic Buckling Analysis
275 9.7 Estimation of System (gamma)ex Given First- and Second-Order Analysis Displacements
277 9.8 Calcuation of In-Plane (gamma)eL for Use with Direct Analysis Method
278 9.9 Out-of-Plane Elastic Buckling Analysis Calculations

9.10 Manual Estimation of (gamma)eCAT for Righthand Column
281 9.11 Summary of Elastic Buckling Load Ratios

9.12 Axial Compressive Strength Ratios
288 9.13 Flexural Strength Ratios
294 9.14 Unity Checks for Combined Flexure and Axial Force
295 9.15 Assessment Using Inelastic Buckling Analysis
297 Chapter 10 System Design Example 4 Clear-Span Building Frame with Large
Span-to-Eave Height
10.1 Material and Geometry
299 10.2 Focus of This Example

10.3 Loading
300 10.4 Planar Frame Analysis Discretization
302 10.5 Calculation of Required Strengths from Planar Load-Deflection Frame Analysis
304 10.6 Calculation of System (Gamma
)ex by In-plane Elastic Buckling Analysis
305 10.7 Estimation of System (Gamma)ex Given First- and Second-Order Analysis Displacements
307 10.8 Calculation of In-Plane (Gamma)eL for Use with Direct Analysis Method
308 10.9 Out-of-Plane Elastic CATB and LTB Analysis Calculations
312 10.10 Manual Estimation of (Gamma)eCAT and (Gamma)eLTB for Subject Roof Girder Design Segments
322 10.11 Summary of Elastic Buckling Load Ratios
323 10.12 Axial Compressive Strength Ratios
332 10.13 Flexural Strength Ratios
337 10.14 Unity Checks for Combined Flexure and Axial Force
341 Chapter 11 Annotated Bibliography

11.1 Column Elastic Flexural Buckling
343 11.2 Elastic Flexural Buckling of Rectangular Frames
345 11.3 Elastic Flexural Buckling of Gabled Frames
346 11.4 Elastic Flexural Buckling of Crane Buildings
347 11.5 Column Inelastic Flexural Buckling and Design Strength
348 11.6 First- and Second-Order Elastic Beam-Column and/or Frame Analysis (Planar Analysis)

11.7 Column Contrained-Axis Torional Buckling
349 11.8 Beam and Beam-Column Elastic Lateral-Torsional Buckling
353 11.9 Beam and Beam-Column Design Resistances
358 11.10 General Behavior and Design of Frames Composed of Tapered I-Section Members
363 Appendix A Calculation of (gamma)eL or PeL for Nonprismatic Members
367 Appendix B Calculation of In-Plane (gamma)e Factors for the ELM
371 Appendix C Guidelines for Out-of-Plane Buckling Analysis
381 Appendix D Benchmark Problems
399 Symbols
403 Glossary
407 Abbreviations
409 References
AISC D825 21W 2021
$32.50