Is there an allowable 1/3 stress increase when designing Masonry Shear Walls using the ASD Method? If so could you please point me to the section of the ACI530/ASCE 5/TMS 602 or the 2007 CBC where I can find it. I know that there is a 1/3 stress increase allowed mentioned in section 2.1.2.3 of ACI 530/ASCE 5/ TMS 602 when considering load combination c, d, or e (which contain wind or earthquake loads) of section 2.1.2.1 of the ACI 530/ASCE 5/TMS 602. However, section 2107A.2 of the CBC requires that section 2.1.2.1 be deleted from the ACI 530/ASCE 5/TMS 602. Does the deletion of section 2.1.2.1 mean that the 1/3 allowable stress increase no longer applies? Or does it mean that the 1/3 increase is still permitted where the ASD Load Combination includes wind or earthquake loading. Please provide me with some information on this matter. Thank You.
Salvador Dorado
T & B Engineering, Inc.
4344 Latham St., Suite 100
Riverside, CA 92501-1773
P: (951) 684-6200
F: (951) 684-6226