DOOR | sizes, shape, location & number - Ishwaranand

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DOOR | sizes, shape, location & number

DOOR | sizes, shape, location & number

The door may be defined is an openable barrier secured in an opening left is a well to provide access to the users of the structures.
  • It basically consists of two parts
  1. A-frame and
  2. shutter (leaf)
  • The shutter is held in position with the door frame.
  • For the small opening, a door is provided with one leaf or shutter, and such a door is known as a single leaf door.
  • In the case of a wider opening, the door has two leaves, and it is called a double-leaf door.

Purpose of doors

Purpose doors, Location of Door, Size door, door Frame, Steel door frame, Timber Door frame,  size doors different types buildings,  location & number

Location of Doors

The following points should be kept in mind while deciding the location of doors in a building.

Size of Doors

  • The size of the door to be adopted for a room depends basically upon the functional requirements of the room.
  • During the case of W.C. or bathroom door width of 75 cm is considered adequate.
  • Toward the other hand, the size of a garage door should be such that it may permit a car to move through it.
  • Near general, the size of the door adopted should be such that that will permit the movement of the largest object expected to pass through the door opening.
  • Regarding the height and width of the door, general rules followed in India is;
  • Height = width + 1m to 1.2m appropriate.
  • Width = 0.4 to 0.6 of height.

Commonly chosen size of doors as different:

Types from building or Size of doors in mm

  • Doors of residential building
  1. External door                                          1000 X 2100
  2. Internal door                                            900 X 2100
  3. For bath & WC                                        800 X 2100
  • Doors of a public building like a school, hospital, library, etc. 1200 X 2100 /1200 X 2100 / 1200 X 2250         
  • Doors of a garage for cars.                     2250 X 2250

Door Frame

  • It is made up of two vertical members known as jambs or posts.
  • Flat member connecting the jambs at the top called ahead.
  • The cross-sectional dimensions of the jamb and the head are normally kept the same for the convenience of fixing the frame in the opening.
Purpose doors, Location of Door, Size door, door Frame, Steel door frame, Timber Door frame,  size doors different types buildings,  location & number

Types of Door frame

  1. Timber Frame
  2. Steel Frame
  3. Cement Concrete Frame

Timber Door frame

  • During the case of doors having one shutter, the size of the jamb about the head is taken as 60 mm thick and 100 mm wide.
  • Some the case of doors having two shutters, the width of the frame members is increased from 100 mm to 120 or 140 mm.
  • The jambs are usually fixed into the head and wedged.
  • Sometimes the head projects out by about 7 cm from the jambs.
  • The projected portion is known as a horn which helps in securing the frame head to the masonry.

Method of fixing

  • Before fixing, all portions of the frame which will come in contact with masonry, are painted with a thick coat of coal tar or by any approved type of wood primer.
  • The frame is placed in proper position and secured to the wall using iron holdfasts.
  • A minimum of three holdfasts is fixed on each jamb. one is fixed at the centre including the remaining two at 30 cm from the top and bottom of the jamb.
  • The holdfasts are embedded in concrete blocks and the frame gets built-in as the construction of the wall goes up.
Purpose doors, Location of Door, Size door, door Frame, Steel door frame, Timber Door frame,  size doors different types buildings,  location & number

Steel door frame

Method of fixing

  • Steel frames are regularly fixed into the prepared door opening i.e. after the masonry work for the door opening as well as lintel etc. are complete and fully set.
  • Besides, the size of the door frame is kept slightly less than the size of the door opening to allow adequate clearance between the frame and the opening.
  • In case the frame is to be fixed in brick masonry, chasses of the required size are cut in the walls for hold fast and the frame is secured to the opening by grouting the holdfast with cement concrete.
  • In the case of stone masonry or R.C.C., where it is difficult to cut chasses, wooden plugs are embedded at appropriate places in the jamb in concrete or stone masonry during casting or construction of the wall.
  • Following the opening moves prepared the door unit is placed in position also fixed with hold fast including galvanized iron wood screws.

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