Bolted fastener requirements can be found in two documents the rcsc speci fication sections 4 2 and 4 3 and the aisc.
Tension control bolts vs slip critical.
Tension control bolts direct tension indicator washers turn of nut tightening calibrated wrench tightening all of these methods start with the snug tightened condi tion and so it is easy to see why these extra steps add cost.
Dti are equivalent to load indicating washers and system hrc is effectively the same as tension control bolts tcbs.
However they may be used where oversized or slotted holes are used to increase tolerances during assembly.
Preloaded bolts are seldom used in buildings where fatigue and slip in service are less critical.
When the joint could be snug tightened and not slip critical.
Bolts in pretensioned joints subject to shear shall be designed in accordance with the applicable provisions of sections 5 1 and 5 3 installed in accordance with section 8 2 and inspected in accordance with section 9 2.
Downloads to incorporate our range of fasteners and shear wrenches into designs cad drawings technical and dimensional details along with quality certificates and installation documents are available to download.
The slip coefficient of a bolted connection is only a consideration for slip critical connections.
Tension control bolts ltd offer a full range of shear wrench sales hire and repair services.
Slip critical joint from structural engineering is a type of bolted structural steel connection which relies on friction between the two connected elements rather than bolt shear or bolt bearing to join two structural elements.
Tension control bolts and the innovative shear wrench system are the lowest cost method of properly i.
Where are pretensioned or slip critical requirements located.
Shear and tension loads can be transferred between two structural elements by either a bearing type connection or a slip critical connection.
Tension control bolts and direct tension indicators are discussed in section 8 2.
This method consists in first snug tightening the bolts.
This first step is achieved with a few impacts of a pneumatic impact wrench or the full effort of a person using a spud wrench to bring the connected.
Tension control bolt tcb installation training video.
