Sockets FFl ?

[Scifen]

Hi Guys I was given the finish floor level for brackets for tray at 2425 and took 1000mm off and installed at 1425 just want to know if in apartment you are given Ffl do you hold your tape on the metre mark and mark down 450mm and that were the bottom of the socket is ?? Thanks

 

[davesparks]

If you have been given a reference line/mark which is stated to be 1000mm above FFL then yes you would measure from that to get your required heights.
The bottom of sockets would be 550 below that if they are to be 450 above finished floor.

 

[davesparks]

Further to the above you need to remember that the specified 450mm is to the bottom of the accessory, not the bottom of the box it is mounted on.
Most flush boxes are smaller than the accessory plate so need to be mounted a little higher than 450 for strict compliance.

Obviously this would only be a problem if the building inspector is a complete and utter jobsworth.

 

[ED17]

PS don't leave the rod lying about otherwise some numpty will nail it to the wall.

Or cut an inch off it.