BZP Throughbolts

Through bolt anchors are designed for use in concrete or dense natural stone
with a strength greater than 20N/mm2 and are probably the most widely used
fixing bolt in todays market.
The throughbolt requires a hole in concrete the same diameter as the bolt, thus
allowing the hole to be drilled through the fixture avoiding lengthy marking out
procedures.
Throughbolts are a versatile, cost-effective anchor combining ease of installation
with good load carrying capabilities.
When selecting any fixing bolts the following factors must be considered.
Thickness of fixture including any packing
Non-structural screed must be included in the fixture thickness
Compressive strength of concrete
Distance from any edge
Centre to centre distance of anchors
Type and direction of load applied.