trap door

Hey All.So I am designing this production which is going to take place on a large 3' stage in the center of the room.I was wondering what the feasibility is/ how would i go about designing small elevators in the platform so that all of the furniture in various scenes could live inside the...

Our High School has a set of stairs about three feet tall with a trap door on the top landing. In the past, we haven't needed to use the door, but now we need to. This requires us to open and close it swiftly, without injuring the actors. We also need it to be safe to stand on, while still being...