JENNMAR’s Bendable Bolts are available where bending is necessary to permit installation of bars that are longer than the mine opening height. These bendable bolts can be furnished with or without an altered or notched section at a designated location at which the bar will bend.
Notched Bendable Bolts
Notched Bendable Bolts are available as single or double notched with notch location and bolt length designated by the customer. Bolts are available in the following sizes/grades:
• #6 rebar, grades 40 & 60
• #7 rebar, grade 60
Fully grouted non-tensioned bendable bolts shall have reached a load of 23,000 lbf before breaking. Tensioned bendable bolts shall exceed the minimum yield loads in accordance with ASTM Specification F432, or both, for the grade and diameter of bolt used, plus 6000 lbf.