UFC 4-023-03
25 January 2005
APPENDIX E
MASONRY CONNECTIONS FOR PROGRESSIVE COLLAPSE DESIGN
Tie forces in masonry and reinforced masonry construction are generally satisfied
through the provision of ductile detailing at connections and joints. Non-ductile
materials such as unreinforced masonry must also have adequate continuous
reinforcement.
General seismic connection details for brick and concrete masonry construction can be
used to develop tie forces. ACI 530-99, "Building Code Requirements for Masonry
Structures" and resources such as the Brick Industry Association Technical Note series
provide guidance on connection details for structural integrity and redundancy. Like
reinforced concrete, tie forces must be developed in brick and concrete masonry
through continuous or effectively lapped and embedded reinforcement.
Some typical seismic details are provided on the following pages to illustrate how tie
forces can be developed. These modified details are based on those provided in
Reinforced Masonry Design by Schneider and Dickey, Prentice Hall, 1980.
E-1
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