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Re: [SEAOC] Tiltup Retrofit Anchors[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaoc(--nospam--at)seaoc.org, seaoc(--nospam--at)seaoc.org
- Subject: Re: [SEAOC] Tiltup Retrofit Anchors
- From: David Owens <dtowens(--nospam--at)cogent.net>
- Date: Fri, 23 Feb 1996 20:13:27 -0800
At 11:40 AM 2/23/96 -0800, Terry Weatherby wrote: >>Dennis Wish PE wrote: >>I concur with Tom Honles assessment of expansion anchors, although the >>Tilt-up committee had taken a position on "under-cut" anchors and felt >>that these would be perferable to expansion anchors. The Under-cut >>anchor, though, requires a special bit since the end of the hole is >>widened (bell shaped) to gain a greater hold with less tension against >>the sides. >>I perfer, and always have - especially with retrofit into poorer grades >>of concrete - to use the Hilti Hit anchor system with their C-100 epoxy >>adhesive for solid based materials. Covert Anchor uses a similar >>adhesive as does a typical SAE 1018 threaded rod and the Simpson >>"Epoxy-Tie" adhesive system. >>Hope this helps. > > I have found recently that DSA/SSS and OSHPD do not allow this type >of epoxy attachment system due to a lack of "long-term durability testing". >We were forced to go to sleeve and/or expansion anchors on recent hospital >jobs because of that "lack" of testing. > I'd be curious if anyone else ran into similar design challenges. > - Terry Weatherby If both of these products can get an ICBO evaluation and a City of LA Research Report, that should be good enough. OSHPD and Caltrans are excessively bureaucratic. > >... ******* ******* ******* ******* >* This email was sent to you via Structural Engineers Association of California >* (SEAOC) email server. To subscribe (no fee) to the list, send email to >* seaoc-request(--nospam--at)seaoc.org and in the body of the message type subscribe. >* To Unsubscribe, send email to seaoc-request(--nospam--at)seaoc.org and in the body of the >* message type Unsubscribe. You can type anything you like in the subject field. >* For questions, send email to seaoc-ad(--nospam--at)seaoc.org. >* Make sure you visit our web site at: >* http://www.seaoc.org/seaoc ****** ***** ******* ******* > > ...
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