Selection of screws for montage isolation on a flat roof for steel groundwork

Lenght of connection (telescopic plate + screw) must be 40mm longer than isolation thickness
thickness of isolation
mm		 length of telescopic plate R45
mm		 length of screw EDB-S
mm
50 30 60
90 60 70
110 90 70
140 120 60
180 150 70
200 180 60
255 225 70
305 285 60