Smartjack
The Smartjack has a very large plate on the floor of the dirt crawlsapce. A large bolt at the top allows it to be adjustable.
Supplemental beam
A beam is added to support the floor joists
Special connectors
Special connectors allow the beam to sit nicely on the jacks
Under a beam or joist
THis joist needed some extra help so it is "sistered" by use of a 2x8 ad the jack is placed under.

