All buildings, except one- and two-family dwellings,
with truss or composite wood joist construction shall have a sign at the main
entrances indicating its truss construction. The sign shall be black with
white letters, measuring two inches by four inches, and shall be marked as
indicated below:
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"Mx Wx Ix"
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Definitions:
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M - Metal truss
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W - Wood truss
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I - Composite wood joist (wood I-beam)
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x =
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R: Roofs
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F: Floors
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A: All
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