H/L

Restraint Strap

For rafter installation, 3.75x30mm Square Twist Nails can be exchanged for ø4.0x25mm wood screws.

Installation

HORIZONTAL RESTRAINT STRAPS

• Horizontal lateral restraint straps should be spaced not more than 2m centres and attached to at least 3 timber members through the use of noggings and packing.
• Attach to timber members using a minimum of 8 no. 3.75 x 30mm square twist nails.
• The bend length should be a minimum of 100mm and should be positioned at the centre of an uncut block or brick.

VERTICAL RESTRAINT STRAPS

• Vertical restraint strapping should be at least 1m long.
• Where straps are fixed to masonry, hardened nails Ø4mm x 75mm long or wood screws #12 x 50mm long into plastic plugs should be used.
• The number of fixings should be in accordance with the design requirements and the lowest fixing should be located within 150mm of the bottom of the vertical strap.

To order: Specify model series, overall length, bend (B) dimension and/or twist (T) dimension.

Example: Heavy strap that has an overall length of 1m, a bend at 10cm and a twist at 20cm. (See illustration for detail on measuring bend & twist dimensions).