I have a project where the contractor is using ASTM F1852 Tension Control (twist-off) bolts. The project is outdoors and uses weathering steel and weathering fasteners. The main members are hollow steel sections that are utilizing bolted splices.
As the contractor is tensioning the splice bolts, he is letting the twisted off portion of the bolt (spline) fall into the the hollow sections. You can hear the metal pieces ping all the way down the tower legs. There are no access holes to be able to retrieve these pieces. They are permanently in the hollow steel members.
We have used these types of bolts in other structures, but this is the first time that I have run into the situation where the splines are left in place. I have not seen an part of a specification that specifically speaks to this situation.
Will this cause any future issues for the structure?
The only possible issue that I can see is that in the future, the collection of splines will rust together and clog the weep holes in the base of the members.