I have recently moved to a house that has a converted attic. It isn't a huge space but would make a reasonable den or man-cave were it not for the fact that the staircase cuts the room almost in half and restricts the use of the floor space - see photo
I've been thinking of doing away with the railings and getting a staircase or cellar type door instead. This would act as a sort of trapdoor and maximise available space.
My basic design is going to be a reinforced rectangle of wood attached with strong hinges to act as a trapdoor. There will be say a 4x4 retaining beam running along the opposite side to the hinges to keep the door in place when closed.
Does anyone have any tips that might be useful for me to know? For example what kind of hinges should I use, how best to reinforce a door panel to make it sturdy enough to be walked on? Any safety considerations and so on.
EDIT: I'm in a two story brick built house in the UK.
Thanks in advance for your help.