a movable structure used to open and close an entrance, typically consisting of a panel that swings on hinges or that slides or spins inside a space.

•USES OF DOORS

It is provided to give access to the inside of a rooms of a buildings.

It serves as a connecting link between the various internal portion of a building.

Lightning and ventilations of a room.

To maintain privacy of rooms.

•TYPES OF DOORS1. PANELLED DOORS2. BATTENED DOORS3. FLUSH DOORS4. COLLAPSIBLE DOORS5. ROLLING SHUTTERS6. REVOLVING DOORS7. GLAZED DOORS

This type of doors consist of frame in which the panels either flat or raised are fitted. This door consist of styles and rails which are grooved along the inner edges of the frame , to receive the panels. The panels are made from timber , plywood , block board , glass,etc.

Flush doors are simple interior and exterior doors that feature plain facings on both sides of the construction. While the flush door is more closely associated with function rather than style, this plain sort of door lends itself well to a number of room designs where the desire is to highlight other elements in the space.

Revolving doors provide entrance on one side and exit on the other side simultaneously. This type of door is advantageously providing places where there is a regular foot traffic of people entering and going out of the building especially in case of banks, hotels, hospitals, theaters, office, etc.

Collapsible doors are generally used in situations where width of opening is large and provision of hinged shutter becomes difficult for want of space. These doors are extensively used for main entrance of residential building, shops, garrage, public buildings, godowns, etc.

STRAIGHT STAIRS

TURNING STAIRS

QUARTER-TURN STAIRS

HALF TURN STAIRS

THREE QUARTER TURN STAIRS

STONE STAIRS

WOODEN STAIR OR TIMBER STAIR

METAL STAIR

BRICK STAIR

GEOMETRICAL STAIRS

R.C.C WINDOWS

CIRCULAR STAIRS

DOG LEGGED STAIR

ESCALATORS

ESCALATOR PARTS