The ends of the ribbon are provided with hook shaped retainers for engagement below parts of a waler and {HEAD ~ tension elements} for fixing {TAIL ~ the hook strap} 
for fixing
The ends of the ribbon are provided with hook shaped retainers for engagement below parts of a waler and { HEAD ~ tension elements } for fixing { TAIL ~ the hook strap }
OTH OTH OTH 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 TAIL