Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Re: Min. masonry reinf

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Thanks to all who responded to my question on minimum masonry reinforcement
it sounds like maximum spacing of vertical cells is most economical if 
partially grouted.  The suggestion of 1-#6@48" vertical and 2-#6@48" 
horizontal sounds like a good solution for the typical application. 
"And now for the rest of the story" - my project is in Massachusetts.  Its 
seismic zone is more like UBC Seismic Zone 2A but the Massachusetts State 
Building Code requires masonry shear walls to be reinforced consistent with 
UBC's Zone 3 requirements.  Also, we are using Korfil Hi-R 12-inch masonry 
block - this is an insulated block system which incorporates rigid
within the cells and precludes two mats of steel.  We currently are
to use 1-#6@32" vertical and 1-#6@48" horizontal.  Fully grouted may be a
idea here.   
Regarding Harold's question on experience with full vs partial grouting, 
outside of the west coast I haven't encountered any regions in which fully 
grouted CMU is considered "standard".  I normally use partially grouted
when "by judgement" the amount of grouted cells warrant fully grouted CMU.