foundation and slab for houses affected by fire

Hi

Just wonder how others engineers deal with foundations and slab on grade for houses burned out by fire

 

1- remove and replace or

2- reuse it

 

1s there a company inspect and certify that stand behind it

what about the damage for concrete , steel and visqueen?

 

thanks for input in advance

 

if you know a company will inspect foundation and slab for burned out houses in Orange county, Los Angeles County, CA

please E-mail me in private or post it

 

Thanks

Dave A., PE.