The Manufactured Housing Forums

I'm on a permanent foundation which consists of 'I' beams transverse under the two sections of the MH. How important is it to also have additional pier supports (there should be two) where the manufacturer has indicated them to be? What could the long term affect be to the structure if these supports are left unused?

I am not much gamilier with this sort of set up....but I do know you should always set to the requirements of the set up manual..

Thank you.