Usually, anchor bolts break from too little tightening rather than too much. In order to tighten them correctly they need sufficient stretch length.
At times unsuitable anchor bolt types are used when installing machinery. They include the hook type, the I type and the fish-tail type.Â
In the case of a termination in the bolt, the load is transferred to the concrete foundation at the end of the bolt creating zones in which the concrete is loaded in tension rather than compression. This can cause cracking and failure in the concrete foundation if the tension stresses exceed the concrete’s tensile strength.
If there are sharp edges, you have stress risers as the concrete is in tension. This will make cracks appear and spread horizontally throughout the entire foundation. Any presence of oil will worsen this situation.
