The steel sole plate or the base plate are fixed to the concrete base with foundation bolts.
When a direct fastening system is used, foundation bolts are generally also used also for the fastening of the clip holding the rails.
Foundation bolts can be different types and shapes according to the specific requirement of the crane and rail type:
FOUNDATION BOLT TYPES
For particularly difficult installations and complex conditions, chemical or expansion foundation bolts could be used.
FOUNDATION BOLT SHAPES