Side rail systems can be supported by the inclusion of diagonal tie wires (DTW) or suspended from a suitable eaves beam as shown.

Recommended sequence of erection:-

  1. Fix bottom rail (R1) and sleeves if required.
  2. Provide temporary props (?) to ensure a level line is achieved.
  3. Fix second rail (R2) and sleeves if required.
  4. Fix side rail supports and diagonal tie wires between R1 & R2 to ensure a level line is achieved to both rails.
  5. Temporary props (?) may now be removed unless support is solely taken from the eaves beam.
  6. Fix the remaining rails and side rail supports progressively up the side of the building.

* Maximum heights indicated are based on a total cladding weight of 15kg/m2 on elevation. If the weight of the cladding exceeds this value, the maximum height can be defined pro-rata.

** In all cases, if the height to eaves exceeds the maximum recommended height, additional tie wires must be included as shown.

? Stiffener cleat positions (see Eaves Beam Details)

Download our purlin technical manual at the bottom of this page for more information.

3.2m < spans ? 6.1m

6.1m < spans ? 10.1m

10.1m < spans ? 15m

Minimum Diagonal Tie Wire Angle Requirements


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