Foundation Bolts or Anchor Bolts are used to attach electric machines to their foundations. Anchor bolts is a bolt which is grounded in the foundation. A nut fastens a hole in the machine bottom to the anchor bolt. Anchor bolts are sometimes connected to epoxy grout in the concrete. At most installations, the Anchor bolt is fitted in the concrete when it is poured. 
Different manufacturers have their own proprietary designs.
Anchor bolts should be sized properly for their yield strength. Incorrect dimensioning and fitment can cause problems during the machine operation such as high vibration, misalignment.
