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Clip Marking on Trough Sections

Trough sections are held against wind uplift by lugs on the clip that engage with the S bends of the rib profile. As these lugs are by necessity wider than the throat of the rib, they may cause some permanent distortion on the sides of the rib as the sheet is installed over the clip.

 

Clip Marking on Trough Section Roofs

 

This distortion is acceptable, as it is unavoidable and will become less apparent with ageing.

(Also see: MBIE Guide to Tolerances, Materials, and Workmanship 2015)

Clause: 
012_003_000_000_000_000_000_000_000
Clause Number: 
12.3
/cop/fitness-purpose/clip-marking-trough-sections
Revision Category: 
4 - Clause Inserted
Revision Detail: 

New clause.