entrance

In my building the door slams every time it closes. I tried adjusting the speed of the door closer, but the instructions show 3 points of adjustment, whereas I only managed to find one (the side one) and adjust it with an Allen key. Am I missing something? I can't find the rest of the screws...

Dear All, I am having some trouble trying to figure out and eventually design the right width for an external security metal gate for a student housing complex. The UK building regulations which I am looking into do not seem to particularly indicate the allowed clearance so that ambulances and...