Types and Usage
There are various types of doors that are used in building works. A door is an accessible barrier which is provided in a wall opening to give an access to the inside of a room of a building. The internal portions of a building are connected by doors.
Types of Doors Used in Building Works:
Based on the arrangement of door components, the doors are classified as following.
1. Battened and Ledged Doors: Battens are vertical bonds which are having grooves are attached together by horizontal supports called ledges.
2. Battened, Ledged and Braced Doors: To make more rigid, braces are provided diagonally in additional to battens and ledges.
3. Battened, Ledged and Framed Doors: For the simple battened and ledged door, frame work is provided in the form of two verticals, known as stiles.
4. Battened, Ledged, Braced and Framed Doors: In this type, the door made up of battens, ledges, stiles and braces. So, it is more rigid.
5. Framed and Panelled Doors: These are very strong and will give good appearance when compared to battened doors. These are the widely used doors in almost all types of buildings.
6. Glazed Doors: Glazed doors are generally provided in interior wall openings or in hospitals, colleges etc.
7. Flush Doors: In flush doors, a solid or semi-solid or core portion is covered on both sides with plywood or face veneer. Now a days these type of doors are widely used because of good appearance, economic, ease of construction and greater durability.
8. Louvered Doors: The louvers permit natural ventilation when the door is closed and also provide privacy in the room.
9. Wire Gauged Doors: Wire gauge doors permits natural ventilation and restrict the entry of flies, mosquitoes, insects etc.. These doors are commonly used in hotels, restaurants and for cup boards containing eatables.
10. Revolving Doors: Revolving doors are only provided in public buildings like museums, banks, libraries etc., because of constant visitors. It consists mullion at its centre to which four radiating shutters are attached.
11. Sliding Doors: In this type, with the help of runners and guide rails the door slides to the sides. The door may have one or more sliding shutter depending up on the opening available.
12. Swing Doors: In this case, the shutter is attached to frame by double action spring which helps the shutter to move inwards as well as outwards.
13. Collapsible Steel Doors: Collapsible steel doors are generally used for workshops, sheds, warehouses etc.. It acts like a steel curtain which will opened or closed by horizontal pull or push.
14. Rolling Steel Shutter Doors: Rolling steel shutter doors are commonly used for warehouses, garages, shops etc.. These are very strong and offer proper safety to the property.
15. Mild Steel Sheet Doors: The door frame is made up of angle or T-sections.
16. Corrugated Steel Sheet Doors: These are same as mild steel sheet doors, but in place of mild steel sheet corrugated steel sheet is welded.
17. Hollow Metal Doors: Hollow steel sections are used to make these doors. The rails and stiles etc., are strengthened by welding small T or I sections inside.
18. Metal Covered Plywood Doors: This type of door is a composite construction of hollow metal door and wood door.
