Dialux Maintenance factor

[normanton]

Hey just a quickie, iv calculated my maintenance factor on a lighting design as 0.62. When i used DIALux to calculate it, it came out as 0.80. Any ideas as to why theres such a difference?

 

[D Skelton]

Maybe it hasn't taken into account the light fittings getting dirty? Without knowing the software inside out I couldn't say but I'd always go with an assumption of between 0.6 - 0.7 anyway.

Don't mean to sound rude but you're sure you're talking about M.F and not C.U yeah?