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Re: ACI 318 Appendix D

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Do you call for 2" of grout or 2" of drypack. and clean bottom of footing surface.
Have you had any feedback as to the size of the slab opening and new excavation required to achieve this ??
Joe Venuti
Johnson & Nielsen Associates
Palm Springs, CA
In a message dated 4/17/2009 11:59:04 A.M. Pacific Daylight Time, FTang(--nospam--at) writes:


There is high strength grout between footing bottom and bearing plate top, then grout metal parts all around with minimum 3” concrete cover before backfilling will soils under concrete.



From: Michael Hemstad [mailto:mhemstad(--nospam--at)]
Sent: Friday, April 17, 2009 11:12 AM
To: seaint(--nospam--at)
Subject: ACI 318 Appendix D



am I to understand you put the steel plate and bolt head in the dirt, then pour concrete over it?  What about corrosion?


Mike Hemstad


Minneapolis, Minnesota


Freeman Tang wrote:


Through-bolts with bearing plate at footing bottom and embedded anchors

in footing are different in the way that through-bolts are externally

applied load from the underside of the footing and cast-in- anchors are

internally exerting forces inside the concrete footing.



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