Code of Standard Practice for Steel Buildings and Bridges

99 Pages·2015·1.64 MB·English

AISC 303-16

Code of Standard Practice
for Steel Buildings

and Bridges

<add date>

Supersedes the April 14, 2010 AISC Code of Standard Practice
for Steel Buildings and Bridges and all previous versions.

Prepared by the American Institute of Steel Construction
under the direction of the AISC Committee
on the Code of Standard Practice.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION
One East Wacker Drive, Suite 700, Chicago, Illinois 60601
16.3- ii

AISC © 2016
by
American Institute of Steel Construction

All rights reserved. This book or any part thereof must not be reproduced in any form
without the written permission of the publisher. The AISC logo is a registered trademark
of AISC.

The information presented in this publication has been prepared in accordance with
recognized engineering principles and is for general information only. While it is
believed to be accurate, this information should not be used or relied upon for any
specific application without competent professional examination and verification of
its accuracy, suitability, and applicability by a licensed professional engineer,
designer, or architect. The publication of the material contained herein is not
intended as a representation or warranty on the part of the American Institute of
Steel Construction or of any other person named herein, that this information is
suitable for any general or particular use or of freedom from infringement of any
patent or patents. Anyone making use of this information assumes all liability
arising from such use.

Caution must be exercised when relying upon other specifications and codes
developed by other bodies and incorporated by reference herein since such material
may be modified or amended from time to time subsequent to the printing of this
edition. The Institute bears no responsibility for such material other than to refer to
it and incorporate it by reference at the time of the initial publication of this edition.

Printed in the United States of America Comment [CC1]: Information appearing
before this point is not part of the ballot; this is
automatically created based upon the standard
form of AISC standards.

Code of Standard Practice for Steel Buildings and Bridges, <date>
AMERICAN INSTITUTE OF STEEL CONSTRUCTION
Public review draft, October 13, 2015
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PREFACE

As in any industry, trade practices have developed among those that are involved in the
design, purchase, fabrication and erection of structural steel. This Code provides a useful
framework for a common understanding of the acceptable standards when contracting for
structural steel. As such, it is useful for owners, architects, engineers, general contractors,
construction managers, fabricators, steel detailers, erectors and others that are associated
with construction in structural steel. Unless specific provisions to the contrary are
contained in the contract documents, the existing trade practices that are contained herein
are considered to be the standard custom and usage of the industry and are thereby
incorporated into the relationships between the parties to a contract.
The Symbols and Glossary are an integral part of this Code. In many sections of
this Code, a non-mandatory Commentary has been prepared to provide background and
further explanation for the corresponding Code provisions. The user is encouraged to
consult it.
This Code is written – and intended to be utilized in practice – as a unified
document. Contract documents may supercede any individual provisions of the Code as
provided in Section 1.1, except when doing so would countermand a requirement in the
applicable building code.
Since the first edition of this Code was published in 1924, AISC has
continuously surveyed the structural steel design community and construction industry to
determine standard trade practices. Since then, this Code has been periodically updated to
reflect new and changing technology and industry practices.
The 2000 edition was the fifth complete revision of this Code since it was first Comment [CC2]: From this point forward in
published. Like the 2005 edition, the 2010 edition is not a complete revision but does add the Preface will be updated editorially by staff
important changes and updates. It is the result of the deliberations of a fair and balanced upon completion.
Committee, the membership of which included structural engineers, architects, a code
official, a general contractor, fabricators, a steel detailer, erectors, inspectors, and an
attorney. The following changes have been made in this revision:

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By the AISC Committee on the Code of Standard Practice,

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1

Code of Standard Practice for Steel Buildings and Bridges, <date>
AMERICAN INSTITUTE OF STEEL CONSTRUCTION
Public review draft, October 13, 2015
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2 TABLE OF CONTENTS Comment [CC3]: Table of Contents will be
3
4 updated editorially by staff upon completion.

5 Glossary ........................................................................................................................ vii
6

7 Section 1. General Provisions ........................................................................................ 1
8 1.1. Scope ......................................................................................................................... 1
9 1.2. Referenced Specifications, Codes and Standards ..................................................... 1
10 1.3. Units .......................................................................................................................... 2
11 1.4. Design Criteria .......................................................................................................... 3
12 1.5. Responsibility for Design .......................................................................................... 3
13 1.6. Patents and Copyrights .............................................................................................. 3
14 1.7. Existing Structures .................................................................................................... 3
15 1.8. Means, Methods and Safety of Erection ................................................................... 4
16 1.9. Tolerances ................................................................................................................. 4
17

18 Section 2. Classification of Materials ........................................................................... 5
19 2.1. Definition of Structural Steel .................................................................................... 5
20 2.2. Other Steel, Iron or Metal Items ............................................................................... 6
21

22 Section 3. Design Documents and Specifications ......................................................... 9
23 3.1. Structural Design Drawings and Specifications ........................................................ 9
24 3.2. Architectural, Electrical and Mechanical Design Drawings and Specifications ..... 15
25 3.3. Discrepancies .......................................................................................................... 15
26 3.4. Legibility of the Design Drawings .......................................................................... 16
27 3.5. Revisions to the Design Documents and Specifications ......................................... 16
28 3.6. Fast-Track Project Delivery .................................................................................... 17
29

30 Section 4. Approval Documents .................................................................................. 18
31 4.1. Owner Responsibility .............................................................................................. 18
32 4.2. Fabricator Responsibility ........................................................................................ 19
33 4.3. Use of Copies of the Design Documents ................................................................ 20
34 4.4. Approval ................................................................................................................. 21
35 4.5. Fabrication and/or Erection Documents Not Furnished by the Fabricator .............. 23
36 4.6. The RFI Process ...................................................................................................... 23
37 4.7. Erection Documents ................................................................................................ 24
38

39 Section 5. Materials ...................................................................................................... 25
40 5.1. Mill Materials .......................................................................................................... 25
41 5.2. Stock Materials ....................................................................................................... 26
42

43 Section 6. Shop Fabrication and Delivery .................................................................. 28
44 6.1. Identification of Material ........................................................................................ 28
45 6.2. Preparation of Material ........................................................................................... 29
46 6.3. Fitting and Fastening ............................................................................................... 29
47 6.4. Fabrication Tolerances ............................................................................................ 30
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48 6.5. Shop Cleaning and Painting .................................................................................... 33
49 6.6. Marking and Shipping of Materials ........................................................................ 35
50 6.7. Delivery of Materials .............................................................................................. 35
51

52 Section 7. Erection ........................................................................................................ 37
53 7.1. Method of Erection ................................................................................................. 37
54 7.2. Job-Site Conditions ................................................................................................. 37
55 7.3. Foundations, Piers and Abutments .......................................................................... 37
56 7.4. Lines and Bench Marks ........................................................................................... 38
57 7.5. Installation of Anchor Rods, Foundation Bolts and Other Embedded Items .......... 38
58 7.6. Installation of Bearing Devices ............................................................................... 39
59 7.7. Grouting .................................................................................................................. 40
60 7.8. Field Connection Material ....................................................................................... 40
61 7.9. Loose Material ........................................................................................................ 41
62 7.10. Temporary Support of Structural Steel Frames ..................................................... 41
63 7.11. Safety Protection ................................................................................................... 44
64 7.12. Structural Steel Frame Tolerances ........................................................................ 45
65 7.13. Erection Tolerances ............................................................................................... 46
66 7.14. Correction of Errors .............................................................................................. 56
67 7.15. Cuts, Alterations and Holes for Other Trades ....................................................... 56
68 7.16. Handling and Storage ............................................................................................ 56
69 7.17. Field Painting ........................................................................................................ 57
70 7.18. Final Cleaning Up ................................................................................................. 57
71

72 Section 8. Quality Control ........................................................................................... 58
73 8.1. General .................................................................................................................... 58
74 8.2. Inspection of Mill Material ...................................................................................... 59
75 8.3. Non-Destructive Testing ......................................................................................... 59
76 8.4. Surface Preparation and Shop Painting Inspection ................................................. 59
77 8.5. Independent Inspection ........................................................................................... 59
78

79 Section 9. Contracts ..................................................................................................... 61
80 9.1. Types of Contracts .................................................................................................. 61
81 9.2. Calculation of Weights ............................................................................................ 61
82 9.3. Revisions to the Contract Documents ..................................................................... 62
83 9.4. Contract Price Adjustment ...................................................................................... 63
84 9.5. Scheduling ............................................................................................................... 63
85 9.6. Terms of Payment ................................................................................................... 64
86

87 Section 10. Architecturally Exposed Structural Steel ............................................... 65
88 10.1. General Requirements ........................................................................................... 65
89 10.2. Fabrication ............................................................................................................ 65
90 10.3. Delivery of Materials ............................................................................................ 66
91 10.4. Erection ................................................................................................................. 67
92

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Public review draft, October 13, 2015
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93 Appendix A. Digital Building Product Models ........................................................... 68
94
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95 GLOSSARY
96
97
98 The following abbreviations and terms are used in this Code. Where used, terms are
99 italicized to alert the user that the term is defined in this Glossary.
100
101 AASHTO. American Association of State Highway and Transportation Officials.
102
103 Adjustable Items. See Section 7.13.1.3.
104
105 AESS. See architecturally exposed structural steel.
106
107 AISC. American Institute of Steel Construction.
108
109 Allowance. A monetary amount included in a contract as a placeholder for work that is
110 anticipated but not defined at the time the contract is executed.
111
112 Anchor Bolt. See anchor rod.
113
114 Anchor Rod. A mechanical device that is either cast or drilled and chemically adhered,
115 grouted or wedged into concrete and/or masonry for the purpose of the subsequent
116 attachment of structural steel.
117
118 Anchor-Rod Group. A set of anchor rods that receives a single fabricated structural steel
119 shipping piece.
120
121 ANSI. American National Standards Institute.
122
123 Approval Documents. The structural steel shop drawings, erection drawings, and
124 embedment drawings, or where the parties have agreed in the contract documents to
125 provide digital model(s), the fabrication and erection models. A combination of drawings
126 and digital models also may be provided.
127
128 Architect. The entity that is professionally qualified and duly licensed to perform
129 architectural services.
130
131 Architecturally Exposed Structural Steel. See Section 10.
132
133 AREMA. American Railway Engineering and Maintenance of Way Association.
134
135 ASME. American Society of Mechanical Engineers.
136
137 ASTM. American Society for Testing and Materials.
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138
139 AWS. American Welding Society.
140
141 Bearing Devices. Shop-attached base and bearing plates, loose base and bearing plates
142 and leveling devices, such as leveling plates, leveling nuts and washers and leveling
143 screws.
144
145 CASE. Council of American Structural Engineers.
146
147 Clarification. An interpretation, of the design drawings or specifications that have been
148 released for construction, made in response to an RFI or a note on an approval
149 drawing and providing an explanation that neither revises the information that has
150 been released for construction nor alters the cost or schedule of performance of the
151 work.
152
153 the Code, this Code. This document, the AISC Code of Standard Practice for Steel
154 Buildings and Bridges as adopted by the American Institute of Steel Construction.
155
156 Column Line. The grid line of column centers set in the field based on the dimensions
157 shown on the structural design documents and using the building layout provided by
158 the owners designated representative for construction. Column offsets are taken
159 from the column line. The column line may be straight or curved as shown in the
160 structural design documents.
161
162 Connection. An assembly of one or more joints that is used to transmit forces between
163 two or more members and/or connection elements.
164
165 Contract Documents. The documents that define the responsibilities of the parties that
166 are involved in bidding, fabricating and erecting structural steel. These documents
167 normally include the design documents, the specifications and the contract.
168
169 Design Documents. The design drawings, or where the parties have agreed in the
170 contract documents to provide digital model(s), the design model. A combination of
171 drawings and digital models also may be provided.
172
173 Design Drawings. The graphic and pictorial portions of the contract documents showing
174 the design, location and dimensions of the work. These documents generally include,
175 but are not necessarily limited to, plans, elevations, sections, details, schedules,
176 diagrams and notes.
177
178 Design Model. A dimensionally accurate 3D digital model of the structure that conveys
179 the structural steel requirements given in Section 3.1 for the building.
180
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181 Detailer. See Steel Detailer.
182
183 Embedment Drawings. Drawings that show the location and placement of items that are
184 installed to receive structural steel.
185
186 EOR, Engineer, Engineer of Record. See structural engineer of record.
187
188 Erection Bracing Drawings. Drawings that are prepared by the erector to illustrate the
189 sequence of erection, any requirements for temporary supports and the requirements
190 for raising, bolting and/or welding. These drawings are in addition to the erection
191 drawings.
192
193 Erection Documents. The erection drawings, or where the parties have agreed in the
194 contract documents to provide digital model(s), the erection model. A combination
195 of drawings and digital models also may be provided.
196
197 Erection Drawings. Field-installation or member-placement drawings that are prepared
198 by the fabricator to show the location and attachment of the individual structural
199 steel shipping pieces.
200
201 Erection Model. A dimensionally accurate 3D digital model produced to convey the
202 information necessary to erect the structural steel. This may be the same digital
203 model as the fabrication model, but it is not required to be.
204
205 Erector. The entity that is responsible for the erection of the structural steel.
206
207 Established Column Line. The actual field line that is most representative of the erected
208 column centers along a line of columns placed using the dimensions shown in the
209 structural design drawings or design model and the lines and bench marks
210 established by the owner’s designated representative for construction, to be used in
211 applying the erection tolerances given in this Code for column shipping pieces.
212
213 Fabrication Documents. The shop drawings, or where the parties have agreed in the
214 contract documents to provide digital model(s), the fabrication model. A
215 combination of drawings and digital models also may be provided.
216
217 Fabrication Model. A dimensionally accurate 3D digital model produced to convey the
218 information necessary to fabricate the structural steel. This may be the same digital
219 model as the erection model, but it is not required to be.
220
221 Fabricator. The entity that is responsible for detailing (except in Section 4.5) and
222 fabricating the structural steel.
223
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224 Hazardous Materials. Components, compounds or devices that are either encountered
225 during the performance of the contract work or incorporated into it containing
226 substances that, not withstanding the application of reasonable care, present a threat
227 of harm to persons and/or the environment.
228
229 Inspector. The owner’s testing and inspection agency.
230
231 Levels of Development (LOD). The levels of completeness of the digital model(s) or
232 digital model elements.
233
234 MBMA. Metal Building Manufacturers Association.
235
236 Mill Material. Steel mill products that are ordered expressly for the requirements of a
237 specific project.
238
239 Owner. The entity that is identified as such in the contract documents.
240
241 Owner’s Designated Representative for Construction. The owner or the entity that is
242 responsible to the owner for the overall construction of the project, including its
243 planning, quality, and completion. This is usually the general contractor, the
244 construction manager or similar authority at the job site.
245
246 Owner’s Designated Representative for Design. The owner or the entity that is
247 responsible to the owner for the overall structural design of the project, including the
248 structural steel frame. This is usually the structural engineer of record.
249
250 Plans. See design drawings.
251
252 RCSC. Research Council on Structural Connections.
253
254 Released for Construction. The term that describes the status of contract documents that
255 are in such a condition that the fabricator and the erector can rely upon them for the
256 performance of their work, including the ordering of material and the preparation of
257 shop and erection drawings or fabrication and erection models.
258
259 Revision. An instruction or directive providing information that differs from information
260 that has been released for construction. A revision may, but does not always, impact
261 the cost or schedule of performance of the work.
262
263 RFI. A written request for information or clarification generated during the construction
264 phase of the project.
265
266 SER. See structural engineer of record.
Code of Standard Practice for Steel Buildings and Bridges, <date>
AMERICAN INSTITUTE OF STEEL CONSTRUCTION
Public review draft, October 13, 2015