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RE: Determining f'm in in-place CMU

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A better approach for determining f'm for insitu masonry is flat jacking.
Contact Mike Schuller @ Atkinson - Noland & Assoc., Inc. (303) 444-3620 or WJE / Erlin-Heim Labs @ 847-272-7400.

Harold Sprague, PE
Krawinkler, Luth & Assoc.

-----Original Message-----
From:	Robert Rollo [SMTP:rrollo(--nospam--at)TEAM-PSC.com]
Sent:	Wednesday, July 01, 1998 12:47 PM
To:	seaoc(--nospam--at)seaoc.org
Subject:	Determining f'm in in-place CMU

Have a wall designed around f'm-1350. #8 @24" vert specified.

KTR installed as #8@40".

need to rationalize (accept) higher f'm to allow design to function.

Thought is, get prisms (multiple) fins an avg and std to determine a
realistic f'm

E447 (ASTM) requires stackbonding for prisms.  in place is running.

has anyone "cut" testable samples from in place wall with any reliable
testing as a result.

any other thoughts on "in place" verification of f'm?

robert d. rollo, PE (structural)
rrollo(--nospam--at)team-psc.com
(806) 747-0161vox
(806) 747-7146 fax

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