• A door may be defined as an openable barriers secured in an opening left in the wall for the purpose of providing access to the user of a structure.
• important consideration for doors
Size of doors:-
Height=width+(1m to 1.20 m) approximately.
Width= 0.4 to 0.6 of height.
Door for residential building:
1. External door-(1m × 2m) to (1.1m×2m).
2. Internal door -(0.9m×2m) to (1m×2m).
3. Door for bathroom and WC- (0.7m ×2m) to (0.8m×2m).
Public building:-
1) 1.2m×2m
2)1.2m×2.1m
3)1.2m×2.25m
• Location of doors:-
1. The door should be located near the corner of the room, at a distance of about 200mm from the corner.
2. The factors such as distribution of the light control of ventilation, prevalent direction of wind private etc,should be considered.
3. The door and the window should be located by keeping in view the interior decoration and functional requirements of rooms.
• Material used for door-
1. Wood ,glas, plywood and the metal are usual materials.
2.Wood is the most common material for door.
Types of doors:-
1) Swing door:-
1. Provided with a special hinges known as the double action spring hinges.
2. The Shutter of a door are held in closed position,when door is not in use.
3. When the door is to be used, a slight push to be made then the action of spring brings shutter in closed position.
4.These types of doors are widely used passage of public building.
2) Sliding door:-
1. The Shutter slides on sides with the help of runners and guide.
2. The Shutter may be one or several leaves and can slide either on one side or both the sides.
3. Used in the entrance of shop, showroom, office ,etc.
3)Rolling steel door:-
1. Consist of frame,a drum and a shutter of thin steel or sheets of thickness about 1mm.
2. The horizontal shaft and springs are provided in the drum at the top.
3. The diameter of a drum is about 200 mm to 300 mm.
4. The Shutter usually roles in turn.
5. Usually provided for a garage, shops, godowns, factory etc.
4) Revolving doors:-
1.Centrally plaved pivot in a circular opening.
2.The revolving shutters or leaves which are four in number are radially attached to the pivot.
3.The Shutters may be fully glazed, fully panelled or partly panelled and partly glazed.
4.Simultaneously provides entrance on one side and exit on the other side.
5.Keep the opening automatically in closed position when not in use.
5) Louverd door:-
1.The Shutters are provided with louvers, either fully or partly.
2.The louvers are arranged at such inclination that the horizontal vision is obstruction.
3.The louver may be movable or fixed.
4.Used for sanitary blocks of public buildings, residential building,etc.
5.Louver collect dust easily and therefore the Louverd door should be periodically cleaned.
6) Laminated flush door:-
1.Consists of styles ,rails, laminated core and plywood.
2.The laminated of wood are glued together under great pressure.
3.The plywood sheets on either side are also glued to the laminated coee under great pressure.
4.Thus a laminated flush door is heavy and requires more material for construction.
7)Framed flush door or hollow core flush door:-
1. Consists of styles,rails, horizontal ribs, vertical ribs and plywood.
2.The holes in horizontal ribs are provided for ventilation.
3.The flush doors,with hollow space,are light in weight and cheap.
4.But as they are weak, they have practically becomes obsolete.
8)Framed and panelled door:-
1.Most usual variety of door.
2.Consists of a framework in which panels are fitted.
3.The style are continuous from top to bottom and rails are joined to the styles.
4.Thickness of Shutter is 30 to 40 mm.
5.Thickness of panels is 20 mm.
9)Battened, ledged and frame:-
1.A framework for shutters is provided in the form of two vertical,known as styles to make the doors stronger and better in appearance.
2.The styles are generally 100 mm wide and 40 mm thick.
10) Battened,ledged,frame and braced:-
1.Similar to the Ledged framed type except that the braces are introduced.
2.More durable and strong hence it can be adopted for external use.
