Orthogonal Loading based from ASCE 7-10 1

[Ratsvein]

Hi!

The following is taken from ASCE 7-10 chapter 12 Sec. 12.5.4 Seismic Design Categories D through F

Structures assigned to Seismic Design Category
D, E, or F shall, as a minimum, conform to the
requirements of Section 12.5.3. In addition, any
column or wall that forms part of two or more
intersecting seismic force-resisting systems and is
subjected to axial load due to seismic forces acting
along either principal plan axis equaling or exceeding
20 percent of the axial design strength of the column
or wall shall be designed for the most critical load
effect due to application of seismic forces in any
direction. Either of the procedures of Section 12.5.3 a
or b are permitted to be used to satisfy this requirement.
Except as required by Section 12.7.3, 2-D
analyses are permitted for structures with flexible
diaphragms.

will anyone please clarify the part stating "column or wall that forms part of two or more intersecting seismic force-resisting systems"? I am having trouble in interpreting what it means thanks!

 

[slickdeals]

Applies to a corner column when you have a moment frame in each direction or a braced frame at a corner that shares a common column. Also can apply to an L-shaped wall that's at a building corner.

 

[Ratsvein]

@slickdeals:

Does this also include any column designed as a Moment Frame in two directions or is it exclusive to corner columns?