hey all! i have a workshop to which i have fitted a car lift...but i now need to remove the ceiling ties(to which there never was a ceiling fitted), and the purlins which are half way up the 45degree rafters, in order to be able to lift the car into the roof space suficently enough to allow standing room underneath. i know the only way is to suficently strengthen the rafters so that they dont sag and install collars higher up. but i want them as high as possible..not just the third of the way up that is recomended. so my thinking is to strenthen the rafters with u chanel 3 or 4 mm steel cupping and screwed or bolted to the raters. then using steel strips as the collars but higher up...say in the top third. has any one any experience of this method or any comments? all very welcome! (arcitect due to advise later next week..but would like some feedback on my ideas)
cheers!
steve