System Components

The Daver Steels tie rod system consists of the following components:

Carbon steel - Grade 460

  • 460N/mm² yield stress
  • A high strength, weldable, structural steel
  • Available in long lengths (up to 12m) with rolled threads to BS3643
  • Can be supplied self colour, painted or galvanised

Stainless steel 316 (1.4404) - Grade 460 or Duplex Stainless Steel

  • 460N/mm² 0.2% Proof Stress
  • A high strength cold drawn stainless steel
  • Available in lengths up to 7.5m with rolled threads to BS3643
  • Usually offered as a 'satin' equivalent finish. Bright polished tendons can also be offered

For areas of higher corrosion exposure bright polished stainless steel tendons are recommended.

Introduction

A variety of fittings can be supplied to match your requirements. Listed below are the standard design fittings offered by Daver Steels as part of the DST460 system. All fittings are designed to the requirements of BS5950 and exceed the capacity of the bar. Fittings are supplied self colour, painted, galvanised or in stainless steel (satin or bright polished).

Fork ends

Threaded fork ends are used to terminate bars and transfer load to the structure. Fork ends are cast components from M12 - M100. The forks are threaded left hand or right hand depending on the tie rod arrangement and are generally tapped with a blind hole for corrosion detailing.

Spades

The spade design fits within the fork and matches the load criteria. Spades can be used in place of a fork but the effect of bending and single shear upon the pin must be taken into account. Spades are a special order item.

Pins

Standard pins are supplied as a pin barrel with end caps. The end caps are secured with counter sunk socket set screws to provide a flush finish. Other pin details can be machined to your specific project requirements

Locking thread covers

The locking thread cover (lockcover) is a machined fitting which tapers the fork to the diameter of the bar. For the complete architectural look they also hide exposed threads and when tightened against the fork lock the tendon at the set length. Where thread covers are not required standard hexagonal nuts can be used.

Turnbuckles

Turnbuckles are left hand and right hand threaded bar connectors. These are machined with a central chamber to give greater length adjustment than can be achieved with the left hand/right hand fork combination.