Such action is considered to be a part of the

  • No School
  • AA 1
  • 374

This preview shows page 237 - 239 out of 374 pages.

meet AISC and AWS specifications. Such action is considered to be a part of the fabricator's quality control pro- gram and should not require either notification of, or approval from, the owner or SER. However, in cases where major work is involved (cutting or removal of welded members from a welded assembly, modification of design, deviation from critical dimensions, etc.), the SER must be consulted and a plan of corrective action agreed upon. What repair is appropriate for material that is cut too short ? When material is short of the minimum required length, welded splices or deposited weld metal, when applied with appropriate welding procedures and specified material, should be permitted with the approval of the SER. What repair is appropriate for mislocated bolt holes ? Generally, mislocated fastener holes are not detrimental to the strength of a member if the remaining effective net section is adequate for the loads. As such, they may be left open, filled with bolts, or plug welded in accor- dance with AWS D1.1-2000 Section 5.26.5 with the approval of the SER. Ultrasonic inspection is not generally required for plug-welded fastener holes. Alternatively, if a bolt hole is mislocated by a small amount, say less than a bolt diameter, it is often possible to adjust the connection material to accommodate the error. What repair is required when a minor member mislocation occurs ? When detail parts are placed in error, minor mislocations should be investigated to determine if relocation is nec- essary. When relocation is necessary, such as when dimensions are critical, the error is major, or the incorrectly placed part is visually unacceptable under an AESS requirement, the incorrectly placed part should be removed. For a welded detail, flame cutting, gouging, chipping, grinding, or machining may be required. Care should be taken to avoid damage to the main material of the associated member. The surface of the main material should be ground smooth and repaired, if necessary.
Image of page 237
APPENDIX PAGE 12 What is "moderate reaming" as indicated in the 2000 AISC Code of Standard Practice Section 7.14 ? During the course of erection, it occasionally becomes necessary to ream holes so fasteners can be installed without damage to the threads, resulting in a hole that is larger than normal or elongated. The hole types rec- ognized by the AISC and RCSC Specifications are standard, oversized, short-slotted, and long-slotted, with nom- inal dimensions as given in the 1999 AISC LRFD Specification Table J3.3. From the 2000 AISC Code of Standard Practice Section 7.14 Commentary, "the term "moderate" refers to the amount of reaming, grinding, welding or cutting that must be done on the project as a whole, not the amount that is required at an individual location. It is not intended to address limitations on the amount of material that is removed by reaming at an individual bolt hole, for example, which is limited by the bolt-hole size and tolerance requirements in the AISC and RCSC Specifications." Note that reamed holes must meet the provisions for minimum spacing and minimum edge dis- tance in the 1999 AISC LRFD Specification Sections J3.3 and J3.4, respectively.
Image of page 238
Image of page 239

You've reached the end of your free preview.

Want to read all 374 pages?

  • Fall '19
  • Structural steel

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors