Live support chatDesign of Seismic Welds
Credit: 3 PDH
Subject Matter Expert: Mahmoud Ahmed, P.E., M.Sc., M.ASCE, GMICE
In Design of Seismic Welds, you'll learn ...
- Classifications of seismic force resisting systems
- The properties of seismic welds
- The purpose and application of demand critical welds
- The definition and location of protected zones
Overview
Preview a portion of this course before purchasing it.
Credit: 3 PDH
Length: 47 pages
Seismic force resisting systems (SFRS) are classified into systems designed and detailed for seismic resistance with Response Modification Factor (R ) > 3, and systems not specifically detailed for seismic resistance (R=3).
(R > 3) systems accommodate severe inelastic deformations better than (R = 3) because these systems are designed to resist lower seismic force by dividing the elastic seismic base shear by a larger value of R factor. And for that, these systems shall be detailed to provide ductile failure mechanisms in certain structural members called “fusing elements”.
The connections of the fusing elements shall be designed to resist the high seismic demands due to the ductile failure of these elements. And the welds of these connections are called “Seismic Welds”.
Welds used in steel structures are classified into three types:
- SFRS Welds, which are located in seismic force resisting systems, but are not considered “Demand Critical Welds”.
- Demand Critical Welds, which are located in certain locations in SFRS. Ordinary welds, that have no special seismic requirements.
Examples of the connections that contain Demand Critical Welds:
- CJP welds of the beam to column moment connection of Special Moment Frames (SMF), Intermediate Moment Frames (IMF), or Ordinary Moment Frames (OMF).
- Groove welds at column splices in Special Concentrically Braced Frames (SCBF), Special Moment Frames (SMF), and Intermediate Moment Frames (IMF).
- Welds at the column to base plate connection in Special Concentrically Braced Frames (SCBF), Special Moment Frames (SMF), and Intermediate Moment Frames (IMF).
This course is prepared in conformance to AISC341-22, AWS D1.8/D1.8M-2021, AISC Design Guide No.21, and FEMA 353.
Specific Knowledge or Skill Obtained
This course teaches the following specific knowledge and skills:
- Classification of seismic force-resisting systems (SFRS).
- SFRS welds.
- Demand Critical Welds.
- Non-Seismic Welds.
- Protected Zones.
- Detailing of Seismic Welds.
Certificate of Completion
You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 15 questions. PDH credits are not awarded until the course is completed and quiz is passed.
| This course is applicable to professional engineers in: | ||
| Alabama (P.E.) | Alaska (P.E.) | Arkansas (P.E.) |
| Delaware (P.E.) | District of Columbia (P.E.) | Florida (P.E. Area of Practice) |
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| Illinois (S.E.) | Indiana (P.E.) | Iowa (P.E.) |
| Kansas (P.E.) | Kentucky (P.E.) | Louisiana (P.E.) |
| Maine (P.E.) | Maryland (P.E.) | Michigan (P.E.) |
| Minnesota (P.E.) | Mississippi (P.E.) | Missouri (P.E.) |
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| New York (P.E.) | North Carolina (P.E.) | North Dakota (P.E.) |
| Ohio (P.E. Self-Paced) | Oklahoma (P.E.) | Oregon (P.E.) |
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| Vermont (P.E.) | Virginia (P.E.) | West Virginia (P.E.) |
| Wisconsin (P.E.) | Wyoming (P.E.) | |
Preview a portion of this course before purchasing it.
Credit: 3 PDH
Length: 47 pages
