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  1. SE2321

    Response Modification factor used by MBS software

    What values of response modification factor does Metal Building Software (MBS) use in each direction? My company uses this software for PEMBs but they have not subscribed to its customer support and I am unable to find the R values for moment frames and braced frames used by MBS in the help...
  2. SE2321

    Deflection limits for large-span PEMB frame

    So I am designing a 61m (~200ft) clear span frame for a PEMB structure with a 0.5mm roof corrugated sheet. Per the MBMA/IBC/ASCE codes, vertical deflection limits are Span/180 for live loads and span/120 for dead and live loads. This comes out to be 508mm (20in) for the latter. These deflection...
  3. SE2321

    Anchor bolt embedment close to edge

    I don't think the bottom edge distance will have any noticeable impact on the tension and shear capacities of anchors. Even under compression, it will not be a problem as compression is largely resisted by bearing stresses generated by the baseplate contact with the concrete surface.
  4. SE2321

    PEMB continuous footing to resist sliding

    Yes, there will be some contribution from continuous footing to resist sliding. But, determining the exact amount is difficult. I have designed many isolated spread footings for PEMB structures, but, never considered any contribution from continuous footing.

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