The 2010 AISC Code of Standard Practice Charles

The 2010 AISC Code of Standard Practice Charles J. Carter, S. E. , Ph. D. Vice President and Chief Structural Engineer AISC

The 2010 AISC Code of Standard Practice Some little changes …

The 2010 AISC Code of Standard Practice Some little changes … … and one big one.

First, the little things.

Scope (Section 1. 1) MARKETING • “Other Structures” added PUBLICATIONS • Consistent with AISC 360 (the AISC Specification REDESIGN for Structural Steel Buildings) • Buildings and Bridges (same as always) • Also affects Section 1. 4

References (Section 1. 2) MARKETING PUBLICATIONS REDESIGN • The usual editorial update

Tolerances (Section 1. 9) MARKETING • Section 1. 9 added as invoking language PUBLICATIONS • Also addresses tolerances not explicitly covered REDESIGN in the Code • Tolerances remain in Sections 6 and 7 • Specifically that tolerances not covered are not to be assumed as zero

Structural Steel (Section 2. 1) MARKETING • Considered structural if attached to the PUBLICATIONS structural frame • Not if. REDESIGN they are loose items that do not attach to • Clarification on base plates and bearing plates the structural steel frame

Drawing Information (Section 3. 1) MARKETING • Editorial improvements made in the Commentary PUBLICATIONS • Improves list of items that should be provided in the contract documents REDESIGN • Works with information added on column differential shortening and anticipated deflections in the Commentary to Section 7. 13

Pre-Detailing Conference (Section 4. 1) MARKETING • Commentary information added on pre-detailing PUBLICATIONS conference • Summarizes importance and benefits REDESIGN • Goal: to open lines of communication and develop a common understanding about the project

Erection Drawings (Section 4. 7) MARKETING • New section PUBLICATIONS • Similar requirements as for shop drawings REDESIGN • Oriented toward ensuring the Erector has information when it is needed

Truss Camber (Section 6. 4. 3) MARKETING Essentially the same PUBLICATIONS Better treatment of incidental camber in trusses REDESIGN

EOR Structure Narrative (Section 7. 10. 1) MARKETING Information added in the Commentary PUBLICATIONS Better describes special erection conditions or other considerations that are required by the REDESIGN design concept Highlights special considerations in the erection of cantilevered members

AESS Welds (Section 10. 2. 5) MARKETING Affects treatment of groove welds PUBLICATIONS Specifically tied to butt joints and outside corner joints REDESIGN Editorial clarification

Now, the big one.

Option 3 Delegated Connection Design Work

Option 1 MARKETING PUBLICATIONS REDESIGN The complete connection design shall be shown in the structural design drawings

Option 1 MARKETING PUBLICATIONS The SER designs the connections REDESIGN The complete connection design shall be shown in the structural design drawings

Option 1 MARKETING PUBLICATIONS REDESIGN The intent of this approach is that complete design information necessary for detailing the connection is shown in the structural design drawings. The steel detailer will then be able to transfer this information to the shop and erection drawings

Option 2 MARKETING PUBLICATIONS REDESIGN The connection shall be designated to be selected or completed by an experienced steel detailer

Option 2 MARKETING PUBLICATIONS The SER provides the schematics and the steel detailer. REDESIGN completes the details The connection shall be designated to be selected or completed by an experienced steel detailer

Option 2 MARKETING PUBLICATIONS REDESIGN It is not the intent that this method be used when the practice of engineering is required

Option 3 MARKETING PUBLICATIONS REDESIGN The connection shall be designated to be designed by a licensed professional engineer working for the fabricator

Option 3 MARKETING PUBLICATIONS The SERREDESIGN provides design criteria and a licensed The connection shall be designated to be designed by a licensed professional engineer working for the fabricator designs the connections

Mix-n-Match MARKETING PUBLICATIONS Acceptable to use multiple methods on same project. REDESIGN One of these options must be specified for each connection

Communication Required! MARKETING PUBLICATIONS REDESIGN

Communication Required! MARKETING PUBLICATIONS REDESIGN

Communication Required! MARKETING PUBLICATIONS REDESIGN

Communication Required! MARKETING PUBLICATIONS REDESIGN • Any restrictions on types of connections • The connection design loads and associated criteria must be defined. Forces, moments, whether the loads provided are ASD or LRFD loads, and similar information is key here • What substantiating connection information, if any, is required

Subst. Connection Info. MARKETING PUBLICATIONS REDESIGN • It is the information submitted by the fabricator, if requested by the SER, when option (2) or option (3) is designated for connections • Early on, the fabricator and SER need to discuss and agree on representative samples of the required substantiating connection information

Review and Approval MARKETING PUBLICATIONS REDESIGN • The connection design engineer must review and confirm in writing, as part of the substantiating connection information, that the shop and erection drawings properly incorporate the connection designs. • This review does not replace the approval process of the shop and erection drawings by the SER. It is in addition to it.

Teamwork MARKETING PUBLICATIONS REDESIGN

Teamwork MARKETING PUBLICATIONS REDESIGN

Teamwork MARKETING PUBLICATIONS REDESIGN The SER is inviting the fabricator and the licensed professional engineer in responsible charge of the connection design to be a part of the SER’s design team.

Final Authority MARKETING PUBLICATIONS REDESIGN The SER is identified as the final authority in the case of a dispute between the SER and the licensed professional engineer in responsible charge of the connection design when option (3) is specified. This is simple and straightforward, and it is how it must be because only the SER has the full knowledge of the structure.

Summary MARKETING PUBLICATIONS REDESIGN • Simple and straightforward approach to a practice that already exists, is in wide use, and currently is widely varying in how it is used. • Has appropriate limits for all three options. • Language allows all parties to control their own risks, and no party is asked to assume the responsibility for the negligence of another party.

A second option for the location of the A secondtitle. ” option for the location of the “branding title. ” There’s always a solution in steel.