Doors and its types in buildings

Door 

A door is a movable structure used to close off an entrance. When opened, they admit ventilation and light. It typically consists of a panel that swings on hinges or that slides or rotates inside a space. Door has essentially two parts: Frame and shutter. The door is used to control the physical atmosphere, noise, etc. Doors also have an aesthetic role in creating an impression.

Elements of Door (Terminology)

1. Frame  - It is the vertical member/post fixed on the wall with the help of holdfast (125X5). It receives the  door shutter.
2. Shutter – It is the movable part of the door which is hinged with the frame.
3. Holdfast – It is the metallic anchorage which holds the door frame against the wall.
4. Post/jamb - It is the vertical member/face of the frame/wall, which receives the holdfast.
5. Head - It is the horizontal member at the top of the frame.
6. Rails – They are the horizontal members of a shutter. They are termed as the Bottom, Lock (middle), Top rail according to their location in the shutter.
7. Stile – It is the vertical member of shutter, which frames the shutter.
8. Panel - It is the block or board to seal the void of a shutter.
9. Batten – They are the planks used for the face of a shutter. (traditional door)
10. Ledge - It is the horizontal member used in battened & ledged door. (traditional door)
11. Brace - It is the inclined member used in battened ledged & braced door. (traditional door)

Types of Door

1. Battened door
2. Paneled door
3. Glazed door 
4. Flush door
5. Sliding door
6. Revolving door
7. Collapsible door
8. Rolling shutter door
9. Swing door
10. Solid core door
11. Nuwood door

Battened door

It consists of series of battens  with tongue & groove joint. The battens hold the planks together. Sometimes a long diagonal slat or two are also implemented to prevent the door from skewing. In some doors, the battens are replaced with iron bars. 

Paneled door

Panel doors, also called stile and rail doors, are built with frame and panel construction: They consist of a frame made up of stiles, a top rail, a bottom rail, and sometimes an intermediate rail. Into this framework a plywood panel is fitted. This panel may fit into a groove or a rebate. This door is used as external door.

Glazed door 

They are similar to Panels door except Panels are in glass. They are normally made up of timber and used as internal door.

Flush door

These types include many modern doors, including most interior doors. They are joint-less; the rails and frame are hidden. Normally the frame is made up of  timber. They are used as internal doors.

Sliding door

A sliding door is a type of door which opens horizontally by sliding. Panels are fixed with wheels on their top & bottom. The wheels run over the iron or hardwood. The panel slide across saving space. They are common in aluminum and steel.

Revolving door

The revolving door is the movement of personnel between roles as legislators and regulators. It helps to maintain thermal condition inside the room. It is found in the entrance of public buildings. 

Collapsible door

They are fabricated from mild steel. They have scissor joints and collapse on sides and save space.

Roller shutters

Roller shutters are closures where the door leaf rolls up above the doorway. Panel coils up on the top. They are used mostly in shops and stores.

Swing door

It can be opened on either side (double/top hinged). It is found in restaurants and public spaces.

Solid core door

It is laminated door section. Fame is made of timber. Hardwood or pressed wood may be used for core of the frame.

Nuwood door

Nuwood is the artificial wood. It gives fine finishing. The wood is cut to desired shape & size. Nuwood can be used to form solid core.