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Kalzip® Systems

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Design specifications<br />

6.6.3 The purlin roof:<br />

Kalzip parallel to inner skin<br />

The clips are fixed to the purlins or the<br />

inner skin spans parallel to the Kalzip<br />

sheet. Depending on the design of the<br />

bottom skin, an inter mediate section may<br />

be necessary with double skin roofs. The<br />

clips are normally positioned on top of<br />

each purlin.<br />

In re-roofing projects with narrow spaced<br />

purlins it may be sufficient to position the<br />

clips on every second purlin only. With<br />

regard to an even load distribution the clips<br />

are alternately arranged on the purlins.<br />

A design calculation is required. Please<br />

consult our local representative for design<br />

calculations.<br />

Non-ventilated Kalzip roof on purlins with trapezoidal inner sheet<br />

Positioning scheme 3<br />

Clips<br />

Positioning scheme 4<br />

Clips<br />

Clip positions with closer spaced purlins (Refurbishment)<br />

Ridge<br />

Ridge<br />

Clip<br />

Gable end<br />

Purlin<br />

Kalzip<br />

Purlin<br />

Clip<br />

Kalzip<br />

Eaves<br />

Eaves<br />

Cover width Kalzip<br />

Rafter spacing<br />

Rafter spacing<br />

Cover width Kalzip<br />

Rafter spacing<br />

Rafter spacing<br />

d = clip distance = purlin spacing<br />

c = purlin spacing<br />

d = clip distance<br />

Distances not to scale<br />

38 Kalzip

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