In commercial construction projects in Australia, door jambs are the vertical components that form the sides of a door opening. They are typically made of wood, metal, or other materials and are attached to the surrounding walls or framing.

Door jambs provide structural support for the door and help to maintain the integrity of the opening.

There are three main parts of a door jamb:

1. The head jamb, which is the horizontal component at the top of the door opening.
2. The side jambs, which are the vertical components on either side of the door opening.
3. The threshold, which is the horizontal component at the bottom of the door opening.

Door jambs are an essential component of any commercial construction project in Australia, as they provide a secure and stable frame for the door to operate within. They are typically installed during the framing stage of construction and are designed to withstand the weight and pressure of the door and any associated hardware.

In addition to providing structural support, door jambs also play a crucial role in the overall aesthetics of a commercial building. They can be finished with a variety of materials, including paint, stain, or veneer, to match the surrounding walls and trim.

Key Points:

• Door jambs are the vertical members of a door frame.
• They are the vertical and horizontal timbers attached to the frame onto which a door is hung and secured.
• Door jambs can be custom-sized to fit specific door openings.
• The Building Code of Australia (BCA) sets out minimum standards for the design and construction of buildings, including commercial and industrial doors.