HES

Heavy Engineered Restraint Strap

A direct replacement for traditional restraint straps, the innovative design of these lightweight straps allows ease of handling and installation whilst maintaining the structural strength and robustness of much heavier weight types.
The HES (heavy engineered strap) replace the traditional heavy (30 x 5mm) restraint straps in roof and floor construction.
Reduced thickness allows the HES strap to span the bottom chords of trusses and over floor joists without the need for notching.
HES straps are less than 40% of the weight, quicker to fit, and overcome many fixing problems associated with traditional heavy straps.

  • Formed edge design gives additional strength on bend
  • Quicker to install - can fit over top of floor joists and truss bottom chords
  • Easier to course with blockwork
  • No need to notch joists
  • Complies with BS EN 845-1
CE Marking
UKCA

Product Details

Features

Material

  • Pre-galvanised mild steel - Z600

Installation

Horizontal strap installation

  • Approved Document A of the Building Regulations requires lateral restraint to be provided at each floor at a maximum of 2 metre centres
  • Restraint straps “perpendicular” to the floor joists are required to be held tight against the masonry and fixed across the first 3 joists
  • Restraint straps “parallel” to the floor joists are required to be held tight to the masonry and be at least 1200mm long
  • The characteristic tensile strength for horizontal restraint straps should not be less than 8 kN

Technical Data

Dimensions

HES - Product Dimensions

References Installation Type Dimensions [mm] Holes
Overall Length A B1 B2 t Flange B2 Flange B1
Ø4.1 Ø4.1 Ø6.1
HES06B10Horizontal600385001001.2388
HES08B10Horizontal800387001001.231212
HES10B10Horizontal1000389001001.231616
HES12B10Horizontal12003811001001.232020
HES15B10Horizontal15003814001001.232624

HES Performance Values

References Fasteners Characteristic Load [kN]
Masonry Wall Floor Joist or Rafter Wall Plate
HES-8 - N3.75x30-8

Certification

Declaration of Performance (DoP)

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Contact

Simpson Strong-Tie U.K.

Simpson Strong-Tie

Cardinal Point, Winchester Road
Tamworth
Staffordshire
B78 3HG
United Kingdom