I am checking the capacity of the some existing joists and cannot find any information from SJI or other catalogs we have in our library. I believe it may be a 32" LA joist but am not sure what the Q relates to. It does have some concentrated loads on it that may have leade the joist company to make it some kind of special joist. I would appreciate any type of input. It spans approximately 44'0", spaced at 7'-6" and is a roof joist built in or about 1962. Thank you
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