Element house, doors and doors as part of the circulation path from one room to another room.

If each stem in the frame of the relationship is not going numb, all the doors will move, and eventually leaves the surface of the bottom of the door will go down.
Example of rigid links in each stem, which form either a fence or door frame as the element leaves the surface of the door, the relationship is to weld iron. Meanwhile, for wood doors, the need to lock the form of iron in the corner square door frame. Without iron elbow on a corner door frame, door leaf frame feared will easy moving.
Doors from either iron or wood, which has a wide door is big enough or have a broad surface area of the doors wide, it is necessary to stem a diagonal brace.