I?m in a hospital project where I?m the consultant supervisor, currently & as per the lighting design the lighting calculation was performed based on the default wall reflectance by the software (Dialux) =50 while the actual wall reflectance based on the architectural design =min 83, because of the difference in wall reflectance & based on the architectural design can reduce the number of the designed lighting fixtures by min 30% in many areas, I have all the powers to change/reduce the no of the lights based on the designed wall reflectance but my fear is perhaps the wall reflectance might be changed while interior works. Absolutely going for wall reflectance =50 is more safer, what do you think?