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Re: Min. masonry reinf[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Min. masonry reinf
- From: "Bill Sherman" <SHERMANWC(--nospam--at)cdm.com>
- Date: 04 Dec 98 16:58:26 -0500
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 insulation within the cells and precludes two mats of steel. We currently are proposing to use 1-#6@32" vertical and 1-#6@48" horizontal. Fully grouted may be a good 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 except when "by judgement" the amount of grouted cells warrant fully grouted CMU.
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