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21905 64"'Ave. W, Suite 200 <br /> rr ierracon Mountlake Terrace, WA 98043 <br /> P (425) 771-3304 <br /> Terracon.com <br /> March 23, 2023 <br /> Reid Jensen <br /> Boeing <br /> PO Box 3707 <br /> Seattle, WA 98124-2207 <br /> Re: Boeing Everett 45-04 Paint Hangar Wing Stands Load Testing <br /> Terracon Project Number M7221502 <br /> Dear Mr. Jensen: <br /> As requested, Terracon Consultants, Inc., performed load testing of the subject epoxy- <br /> grouted threaded rod anchors at the project located at Boeing's Paint Hangar (hereafter <br /> referred to Building 45-04) in Everett, Washington. <br /> 1.0 BACKGROUND & SCOPE <br /> We understand that a CMU wall at Building 45-04 was scheduled to receive epoxy-grouted <br /> anchors. Originally, it was assumed that the wall was fully grouted and would not require <br /> screen tubes for anchors. Upon drilling into the wall, however, it was discovered the CMU <br /> had no grout, leading to questions whether the wall could support the planned anchors to <br /> be installed. For this reason, load testing of the anchors was required. Per discussion with <br /> Skanska, a load of 570 pounds-force (Ib-f) was required to be applied for at least one <br /> minute. Please note that two separate visits were conducted with two different methods of <br /> anchorage; anchors tested on February 23rd used two epoxy sleeves to secure the <br /> anchors, and anchors tested on February 28th used only one epoxy sleeve. <br /> 2.0 TEST METHODS & PROCEDURES <br /> The test load was applied via a calibrated 12-ton <br /> Enerpac RCH-121 thru-hole hydraulic ram and <br /> digital gauge assembly (shown right). Typical <br /> load testing procedures in accordance with - <br /> ASTM E3121 load testing procedures include §: <br /> the use of a reaction beam to distribute the load = - <br /> away from the substrate in which a failure cone - - <br /> could develop. Due to the presence of a metal <br /> strip covering six of the anchors, any means of <br /> load application would not allow for concrete q <br /> breakout in the event of a failure for those three <br /> anchors. 'f J <br /> The anchors were tested at the prescribed test Anchor Load Testing Setup <br /> load of 570 Ib-f for 1-minute or until failure, <br /> whichever came first. <br />