2006 IBC Seismic Design EXAMPLES

Wednesday, 

May 21, 2008 10:00 – 11:30 am PDT

Web Seminar

Description:  This web seminar presents three examples included in the SKGA one-day 2006 IBC Seismic Seminar.  The examples demonstrate the application of the 2006 IBC/ASCE 7-05 seismic design provisions as follows: 

Example 1:  Determination of seismic design forces for a 3-story concrete frame building using the equivalent lateral force procedure.  Starting from ground motion at a specific location, the design base shear is calculated and distributed along the height of the structure.  Member design forces are determined using the design load combinations and the redundancy factor of the 2006 IBC/ASCE 7-05. 

Example 2:  Determination of diaphragm design forces in a multi-story frame-shear wall building. 

Example 3:  Calculation of out-of-plane wall and anchorage design forces for a tilt-up concrete wall with parapet laterally supported by a structural wood diaphragm. 

Anchorage-to-Concrete: ACI 318-05, Appendix D 

(Parts I and II)

Monday, 

June 2, 2008

Part I: 9:00 to 10:30 am PDT

Part II: 12:30 to 2:00 pm PDT

Web Seminar

Description: Anchors into concrete that are subject to seismic design forces could, before the adoption of the IBC, be designed by the allowable stress design method or the strength design method of the UBC and other two legacy codes. They must now be designed in accordance with the strength design method in Appendix D of ACI 318-05. This seminar, which consists of Part I and Part II, provides an overview of the anchor design provisions in Appendix D of ACI 318-05 through a design example and points out some of the difficulties facing designers.

Part 1 of the seminar illustrates the four different failure modes for an anchor subject to tension and the calculation of the corresponding anchor strengths through a design example. The related detailed provisions of Appendix D are introduced and discussed in the course of presenting the example.

Part 2 of the seminar illustrates the three different failure modes for an anchor subject to shear and the calculation of the corresponding anchor strengths through continuation of the design example presented in Part I. The related detailed provisions of Appendix D are introduced and discussed.

The strength of an anchor or a group of anchors subject simultaneously to tension and shear is also discussed in Part 2, as well as the prevention of splitting failure.

SPECIAL NOTE: In response to many requests from structural engineers, SKGA has been developing a computer program for the calculation of anchor strength in compliance with ACI 318 Appendix D.  It is our goal for the author, Prabuddha Dasgupta, to be able to debut this program at the end of Part II ( [no later than] 2.00 pm PDT) for those interested in this optional segment.