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RE: ASTM A 615 for frames and wall boundaries - actual yield & Fu/Fy

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Hit send before I finished...

UBC says the "proof" is the yield strength and ultimate strength
levels provided on the rebar mill certs. So, I believe it's the buiding
inspector who needs to verify material conformance rather than the plan
reviewer. However, you should/could make sure that the plans clearly
indicate this requirement so that the building inspector and the testing and
inspection agency don't accidentally miss it.

Brent Koch
Koch Engineering, Inc.
Livermore, CA

-----Original Message-----
From: Haan, Scott M. [mailto:HaanSM(--nospam--at)]
Sent: Saturday, December 15, 2001 10:42 AM
To: Seaint list (E-mail)
Subject: ASTM A 615 for frames and wall boundaries - actual yield &

ACI 21.2.5 indicates frame members and wall boundary elements can only use A
615 reinforcement if the actual yield stress does not exceed the specified
by more than 18000 psi and the actual ultimate does not exceed the actual
yield by a ratio of 1.25.

Is A 615 steel meeting these requirements uncommon and have to be special
ordered?  Should a plan reviewer ask for them to prove it or use A706?

Scott M Haan P.E.
Plan Review Engineer
Building Safety Division
Development Services Department
Municipality of Anchorage

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