Building Construction and
Technology V
        Fifth Semester
            B.Arch.
Unit I : Special Openings I
     Design and construction details of sliding doors.
     Sliding folding doors.
     Side hung doors.
     Revolving doors.
     Sliding windows in timber.
     Sliding windows in metal.
Sliding Doors
•   Sliding doors opens horizontally by sliding, usually parallel to a wall.
•   It can be mounted either on top of a track below, or
•   be suspended from a track above.
•   There are two types of sliding door
    1. Top Hung Sliding Door, and
    2. Bottom Rolling Sliding Door.
Top Hung Sliding Doors
• The door is hung by two trolley hangers at the top of the
  door running in a track
• All the weight is taken by the hangers, making the door
  easier to move.
• A bottom track prevents the door from swinging sideways.
Sliding Doors
Bottom Roller Sliding Doors
• The door consists of two rollers at the bottom running on a track
  and two guides at the top running in a guide channel.
• As all the weight of the door is concentrated on the two bottom
  wheels, more force is needed to move the door than on a top
  hung system.
Sliding Doors
Sliding Doors
•   Advantages……?
    •   there is almost no space required to open/ move the door.
    •   It is much easier for a person in a wheelchair to operate a sliding door.
•   Disadvantages……?
    •   there can be a small gap between the door and the wall, it does not seal the opening the
        way a side hung door does.
Sliding Folding Doors
•   It is a type of door which opens by folding back in sections or panels or shutters.
Sliding Folding Doors
Sliding Folding Doors
Sliding Folding Doors
Center Sliding Folding Doors
Side Hung Doors
•   Side hung doors are hinged along one side to allow the door to pivot away from the
    doorway in one direction, but not the other.
•   The axis of rotation is usually vertical.
Revolving Doors
•   A revolving door typically consists of three or four doors that hang on a central shaft and
    rotate around a vertical axis.
Revolving Doors
Revolving Doors
 •   Revolving doors can also be used as security devices to restrict entry to a single person
     at a time if the spacing between the doors is small enough.
 •   Revolving doors are energy efficient as they prevent drafts (via acting as an airlock),
     thus preventing increases in the heating or cooling required for the building.
Sliding Windows in Timber & Metal