ACI, an international technical institute, is composed of interested
volunteer professionals in various areas of concrete technology. The over
100 ACI technical committees create and maintain reports, guides, and
standards in their areas of expertise (see website,
http://www.aci-int.org). As one might expect, there is normally
considerable debate and discussion as consensus is attempted in any
particular aspect of the technology. ACI committees operate under
ANSI-approved procedures, giving the committees a structured method to try
to achieve a consensus. When a ACI committee document is published, it is
the collective consensus of that committee.
ACI 355, Anchorage to Concrete, was formed in 1970, and has sponsored a
number of technical sessions at ACI conventions and also produced 355.1 in
1991, Report on Anchorage to Concrete. Also in the early 1990s, ACI 318
began to draft appendix code provisions on anchorage to concrete. The 318
Committee wanted the provisions to address both cast-in-place and
post-installed anchors, and the effects of concrete cracking on the
strength of the anchorage. At the time, there was no ANSI-type standard
test procedure to determine the reliable strength of post-installed anchor
devices. By the mid 1990s, Committee 318 asked Committee 355 to draft a
standard test procedure for testing post-installed anchors that could be
referenced by the 318 provisions.
The 355.2 standard (a test method, not a code) was first drafted and
balloted by committee 355 in 1997, and now has been successfully processed
by the 355 committee, the ACI technical activities committee (TAC), and the
ACI standards board (SB), and is presently out for the normal 90 day public
comment period (see the February issue of Concrete International for a
detailed account). This period is not connected to the timing of the ACI
conventions. Once comments are received, the committee will consider them,
and may adjust the standard based on them. The final standard will be
published by ACI after committee response to public comments are reviewed
by TAC and SB.
A new 318 appendix on anchorage to concrete will be available for a 90 day
public review this summer, probably in either the June or July issue of
Concrete International. It is anticipated that the planned 2002 ACI 318
will contain appendix provisions for anchorage to concrete, and will
reference this standard test method to evaluate the structural reliability
and performance of proprietary, post-installed anchoring devices.
ACI members encourage other professionals to participate in the public
review period, and in technical committees. If committee membership is
desired, please see the ACI website for more information.