Banding as fire clip?

Yes in my view provided that the fixings holding the banding to the structure are reasonably fire resistant.

Screws into masonry or substantial timber should be OK provided that fibre wall-plugs are used and not plastic.

Basically yes

broadgage: 
 

 

Screws into masonry or substantial timber should be OK provided that fibre wall-plugs are used and not plastic.

 Could you argue that by the time a masonry wall has got hot enough to melt plastic wall plugs then the fire brigade would be outside hosing in?

Plastic wall plugs can fail quickly during a fire, long before the general mass of masonry gets hot. The metal screw conducts heat into the plastic.

Fibre survives better.

Let's go the whole hog and use good old-fashioned Rawlplugs - no point worrying about the asbestos! ?

builders band is fine, although a bit ugly. As others have said, use a bit of thought about what it is screwed to or bolted around.

Mike

broadgage: 
 

Yes in my view provided that the fixings holding the banding to the structure are reasonably fire resistant.

Screws into masonry or substantial timber should be OK provided that fibre wall-plugs are used and not plastic.

Fibre wall plugs used to be supplied by the makers of night storage heaters for fixing the heater wall brackets to the wall. I have used plastic plugs on occasions and long screws, with no problems found. I suppose that most of the heater weight is downwards onto the heater's feet. But the plastic plugs may become soft if they get too hot. Still, the wall bricks will probably conduct heat away from the plastic plugs.

Z.

Grumpy: 
 

broadgage: 
 

 

Screws into masonry or substantial timber should be OK provided that fibre wall-plugs are used and not plastic.

 Could you argue that by the time a masonry wall has got hot enough to melt plastic wall plugs then the fire brigade would be outside hosing in?

Yes.

Z.

Have been using this banding in larger trunking systems for several years now, we asked a Fire officer before using and he could see no reason as long as the fixing was of a heat resistant nature. We solely use the wall dog style screw now and have never been pulled up on any installations. However, if there is a manufactured clip for a containment system we will revert to those instead of the banding. When fixing onto timber we were advised to use a longer than usual length screw to allow greater hold time in the event of the timber being on fire. 

Just a couple of obvious caveats - check that the banding/fixing is suitable for the weight of the cable - unlikely not to be but if you had a huge SWA with a fair distance between fixings it might be worth a double check. Also consider any abrasion from the sharpish edges of the banding - if the cable is subject to movement (perhaps including thermal on a long straight run) or the cables aren't straight/perpendicular to the band then some sort of padding might be in order.

My thinking on plastic rawl plugs is to consider if the screw would fall out of the hole if the plug wasn't there … hung underneath a ceiling it certainly would, but a long screw into a horizontal hole in a wall would much more likely stay put unless there was any tendency to pull away from the wall.

   - Andy.