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Head Restraints
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Application

Suitable for masonry wall or the inner leaf of a cavity wall.

Description

Designed to restrain the top of masonry walls or the inner leaf of a cavity wall. They allow vertical movement to accommodate shrinkage or thermal movement of the wall or structural frame, whilst restraining wind loads. The standard Wincro WT75HR suits a 215 mm high block.


Head restraints include:

  • Wincro WT75BHR: The WT75BHR has two angles which clamp the top of the wall and each have 10 mm holes for a single fixing to the underside of a structural member and provides a safe working load of 1.0 kN. Universal size suits 100 and 140 mm blockwork.
  • Wincro WT75HR: Designed to suit standard 215 mm high blocks with a 25 mm maximum joint at the top, and can be adjusted to suit 190–275 mm cut block depths. The WT75HR has a single 9 mm wide slot to allow fixing to the underside of a structural member and provides a safe working load of 1.5 kN.
  • Wincro WT75HRC: Designed to suit standard 215 mm high blocks with a 25 mm maximum joint at the top. The WT75HRC has a notch to allow fixing to the underside of a structural concrete member and provides a safe working load of 1.5 kN. The WT75HRC can fix directly to a 38/17 (WT75HRC38) or 28/15 cast-in channel (WT75HRC28).


Features and benefits:

  • Multiple fixing methods.
  • Provides lateral movement and allows for differential movement.
  • Manufactured from corrosion resistant stainless steel.
  • Suits all blockwork widths.

General information

Color

Silver

Material

Stainless steel

Grade 1.4301 (304), standard.

Grade 1.4401 (316), optional.

Shape

Other

Uniclass

Pr_20_85_84_36 Head restraint slip tiesPrimary

CAWS

F30/251 Wall head restraint slip ties

Specification data - Head restraint slip ties Enhanced data

Material

Stainless steel, grade 1.4301 (304).

Fixing

Single fixing to the underside of a structural member.

Accessories

Fixing accessories.

None.

WBEBM8.

M8 expansion bolt for fixing to concrete.

WBXSM8.

M8 Xylan coated setscrew (to UB) complete with neoprene isolation washer for fixing to structural steelwork.

WBBBM8.

Blindbolt (RHS) for fixing to structural steelwork.

WIP75.

Neoprene isolating patch for fixing to steelwork.

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Working load limit (WLL)

Safe working load.

1.0 kN.

Sizes

Blockwork size.

100 mm.

140 mm.

Spacing

Positioning/ spacings.

600-900 mm centres.

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