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PEMB / Masonry expansion joints

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If a metal building is designed to H/100 lateral
displacement, is it appropriate to size the vertical
expansion joints in the masonry facade at the
building's corners for an equal amount of movement?

For example, 20ft tall building, masonry walls to 12ft
tall.  Lateral displacement = 2.4" at roof level,
1.44" at top of masonry.  Expansion joints in masonry
should provide for 1.5"(1.44") lateral movement.

This seems obvious, but is there anything else to it
that I am missing?

Jim Wilson
Stroudsburg, PA

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