Static structures (e.g. – buildings) – Three-way corner construction
Reexamination Certificate
2007-02-20
2007-02-20
Chilcot, Jr., Richard E. (Department: 3634)
Static structures (e.g., buildings)
Three-way corner construction
C052S656900, C052S749100, C052S167300, C052S655100
Reexamination Certificate
active
10805448
ABSTRACT:
At a beams-to-column connection of two beams to a column, in which the joint connection comprises both a gravity load-carrying capability and a moment-resisting capability between each beam and column, there is added a beam-to-beam connection across the column, using two gusset plates, facing each other on opposite sides of the joint connection. The gusset plates which are not welded directly to the column in a moment-resisting connection, connect the two beams in a tension, shear and moment-resisting connection with respect to each other. Such beam-to-beam connection by the gusset plates provides the capability of withstanding severe torsional and lateral inelastic deformation due to direct blast pressure. When subjected to violent conditions and upon loss of column support or the loss of integrity of the beams-to-column joint connection, the two beams and gusset plates provide independent beam-to-beam structural continuity, causing the two beams to act as one long beam.
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A U. S. Government publication, Department of Defense, Appendix K DOD Interim Antiterrorism Force Protection Construction Standards, Progressive Collapse Design Guidance, N62742-98-4-1353, Amendment No. 0007, dated Apr. 4, 2000. Copy, two pages, attached. The relevant portion is the second page which is discussed above.
A U. S. Government publication, Department of Defense, Unified Facilities Criteria (UFC) DoD Minimum Antiterrorism Standards For Buildings, date Jul. 31, 2002, UFC-4-010-01. Copy attached. The relevant portions are discussed above.
(A U.S. Government publication) General Services Administration, GSA, Progressive Collapse Analysis and Design Guidelines for New Federal Office Buildings and Major modernization Projects, Jun. 2003. Copy attached. The relevant portions are discussed above and more particularly, Appendix D, Structural Steel Connections.
Chilcot Jr. Richard E.
Humphries L. Lee
Maguire Lindsay M.
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