Typically, the roving is connected to a first structural component by threading the roving through {HEAD ~ a borehole} drilled through {TAIL ~ the component} and backfilling the borehole with epoxy, polyurethane, or grout 
drilled through
Typically , the roving is connected to a first structural component by threading the roving through { HEAD ~ a borehole } drilled through { TAIL ~ the component } and backfilling the borehole with epoxy , polyurethane , or grout
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH