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UBC94 R/C seismic shearwall boundary element requirements[Subject Prev][Subject Next][Thread Prev][Thread Next]
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- Subject: UBC94 R/C seismic shearwall boundary element requirements
- From: "T. Eric Gillham" <gk2(--nospam--at)kuentos.guam.net>
- Date: Tue, 14 Oct 1997 15:47:42 +1000
I am curious as to the reasoning behind the BE detailing requirements set forth in UBC94 Section 1918.104.22.168.2.3 (page 2-243). Why the 1:3 ratio? Is this requirement necessary if additional crossties are used to secure the vertical bars not in the corners of the overlapping hoops? Also, what type of lapping requirements should be implemented? Could the hooked bar development length requirements of UBC94 Section 1922.214.171.124 be used, or are these overly conservative? Finally, does anyone have any comment on the effectiveness of overlapped hoops compared to continuous horizontal rebar? If sufficient lapping of the hoops is in place, could the two (i.e. overalapped hoops, continuous horizontal rebar) be expected to behave in the same manner?
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