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ASTM C1196-20

Current Revision

Standard Test Method for In Situ Compressive Stress Within Solid Unit Masonry Estimated Using Flatjack Measurements

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1.1 This test method covers the determination of the average compressive stress in existing unreinforced solid-unit masonry (see Note 1). This test method concerns the measurement of in-situ compressive stress in existing masonry by use of thin, bladder-like flatjack devices that are installed in cut mortar joints in the masonry wall. This test method provides a relatively non-destructive means of determining masonry properties in place.

Note 1: Solid-unit masonry is that built with stone, concrete, or clay units whose net area is equal to or greater than 75 % of the gross area.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 Stress is applied as pressure over the area of the flatjack. In the case of multi-wythe masonry, stress is estimated only in the wythe in which the flatjack is inserted. Stress in other wythes may be different.

SDO ASTM: ASTM International
Document Number C1196
Publication Date Dec. 15, 2020
Language en - English
Page Count 7
Revision Level 20
Supercedes
Committee C15.04
Publish Date Document Id Type View
Dec. 15, 2020 C1196-20 Revision
Dec. 1, 2014 C1196-14A Revision
July 1, 2014 C1196-14 Revision
June 1, 2009 C1196-09 Revision
Jan. 1, 2004 C1196-04 Revision
June 10, 2003 C1196-03 Revision
June 10, 1997 C1196-92R97 Reaffirmation