RedVector RV-10695AW

Seismic - Wood Diaphragm Design for Out of Plane Wall Anchorage

Seismic - Wood Diaphragm Design for Out of Plane Wall Anchorage

1 hr. Online Course

Level: Intermediate

Item#: RV-10695AW

SME: Jill Nelson, PE, SE, LEED AP BD+C

This course has been discontinued.

This course will explain the design and detailing of subdiaphragms for a flexible roof system using ASCE 7-10 Section 12.11 Structural Walls and Their Anchorage. Many low rise buildings are constructed with heavy walls of masonry or concrete and light wood roofs or floors. During an earthquake the light roof framing must stabilize the heavy walls as those walls move out of plane. IBC 2012 and ASCE 7-10 require that the roofs and floors be designed to transfer the out of plane wall forces through the diaphragm using the subdiaphragm concept. This course will show you how to develop the demand on the diaphragm, calculate the capacity of the framing members and detail the members to achieve this load transfer.
Course Objectives
At the end of this course, you will be able to:
  • Identify the generation of the seismic inertia forces for heavy walls supported by flexible diaphragms
  • Calculate seismic out-of-plane wall forces
  • Apply the subdiaphragm concept to distribute those forces through the flexible diaphragm
  • Evaluate alternatives to create the best layout
  • Review possible code modifications to better address the issue
SUBJECT MATTER EXPERT: Jill Nelson, PE, SE, LEED AP BD+C
Jill Nelson, PE, SE, LEED AP BD+C Photo
Jill Nelson is a registered Civil and Structural Engineer in California and Washington. She earned a Bachelor of Science in Civil Engineering from the University of Nevada, Reno and a Master of Science in Engineering from the University of Washington with an emphasis in Structural Engineering. With over 20 years of experience, she is an accomplished designer of low and mid-rise building constructed of wood, steel and concrete. Through the years her areas of interest has increased to include both new construction and renovation of existing buildings with a focus on seismic rehabilitation. Ms. Nelson is currently an Associate Professor in the Architectural Engineering Department at California Polytechnic State University, San Luis Obispo.
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