Author: Ibrahim

  • Revolvable doors

    These doors are widely used where frequent opening and closing of doors due to foot traffic such as markets, public buildings, hotels, shops, theaters and hospitals should be avoided. Arrangements are made to swing the door almost to one side of the shutter and close automatically whenever pushed and released.

  • Rollable doors

    This is a modification on sliding doors. These doors are usually made of steel or sheet metal slats and can be easily closed or opened by slightly pulling or pushing the shutter. They do not require much space and are generally used for garages, showrooms, shops etc.

  • Slidable doors

    Slidable doors that slide to one side were widely used for residences in the past. Door shutters can also slide up or down. These doors do not create any hindrance to movement. Vertical sliding doors are pulled by cables or chains and are used for large openings in industrial and freight elevator doors. Right-angled doors…

  • Foldable doors

    These doors are usually single or as folding partitions so that two rooms can be used together as one room or separately. They are made of wood or metal and are used for very large openings. The doors are also connected together.

  • Door swinging type

    In these doors, the shutter is hung on the door frame on hinges or bits that are attached to one side of the shutter, so that it swings on a vertical axis. Doors can be single swing, double swing or double acting type. In single swinging type doors, if a person is standing on the…

  • Doors & windows location

    The designer or planner should follow the following principles when deciding on the placement of doors and windows:

  • Introduction to Door and Windows

    A door is a movable barrier secured in an opening, known as a door, through a building wall or partition for the purpose of providing access to the interior of a building or to rooms in a building. A door is held in position by door frames, whose members are located on the sides and…

  • walls Formwork

    Wall formwork consists of sheets, studs, ties and braces. Sheets are supported by vertical studs and horizontal wales. Ties are provided to maintain the distance between the sheets and to resist the spalling action of the concrete. Small pieces of wood called spacers can be used and should be removed when the concrete reaches this…

  • Mixing by using machines

    Concrete mixing for reinforced concrete work and medium or large scale concrete work is always done by machine. Machine mixing is not only efficient and fast but also economical when the quantity of concrete is high. Concrete mixers can be classified as batch mixers and continuous mixers. Batch mixers prepare concrete batch by batch at…

  • Mixing by using hands

    For small-scale non-critical concrete works, hand-mixing is practiced. Since the mixing cannot be complete and efficient, 10 percent more cement must be added to compensate for the inferior concrete produced by this method. An impervious concrete or brick floor of sufficient size to pick up a bag of cement should be handled. Spread measured amounts…