Modular Building Seismic Design

[300redbeard]

If a modular building (trailer) is on 3 ft piers/jacks, should the base shear (at floor level) be multiplied by the pier height for an applied moment to be restrained by seismic holdowns?

I've been reviewing calculations from multiple engineers/companies and they are not accounting for the pier height in the calculations.

Thanks

 

[JAE]

Seems like that makes sense - to include the pier height.

 

[msquared48]

I would too. I have for that matter.

Mike McCann
MMC Engineering

 

[300redbeard]

Thanks for previous responses.

Would story drift apply as well?

If so, the restraint would have to limit the actual story drift to be less than actual.