In commercial construction in Australia, a barge is a temporary, elevated platform used to support construction equipment and materials during the construction of buildings, bridges, and other structures. It is typically made of steel or timber and is designed to be placed on water, such as a river or lake, to provide access to areas that are difficult to reach from land.

In the context of commercial construction in Australia, a baluster is a vertical member that supports a railing or handrail in a balustrade system . A balustrade is a safety barrier designed to prevent falls from elevated areas, such as stairways, balconies, and raised floor levels .

In the context of commercial construction in Australia, a balcony is defined as an elevated platform or structure that projects from a building, providing an outdoor space for occupants

The Bushfire Attack Level (BAL) rating is a measure of the severity of a building's potential exposure to ember attack, radiant heat, and direct flame contact in the event of a bushfire . In the context of commercial construction in Australia, the BAL rating is a critical factor in determining the construction methods and materials used in bushfire-prone areas .

In the context of commercial construction in Australia, backfill refers to the process of filling in excavated areas around a foundation or structure with a suitable material, such as soil or gravel . The primary purpose of backfilling is to provide a reliable, effectual, and lasting support to the adjoining ground .

An Australian Standard in commercial construction refers to a published document that establishes the minimum community expectations for the safety, quality, performance, and consistency of materials, equipment, techniques, or procedures used in the construction industry . It is an approved standard set down by the Standards Association of Australia (SAA) .

In the context of commercial construction in Australia, an arris refers to the sharp edge formed by the intersection of two surfaces, such as the corner of a masonry unit . This definition is applicable to various types of construction, including framed construction (steel and timber), masonry veneer, and full masonry construction .

In the context of commercial construction in Australia, an architrave refers to the mouldings or trim that surround a door or window frame . It serves both functional and design purposes, adding a decorative finishing touch to the room while also hiding the join between the wall and door or window frames .

In Australia, the definition of architecture in commercial construction is broad and encompasses a wide range of building typologies . Architecture in this context involves planning and designing buildings and spaces that prioritize functionality while meeting safety standards and construction regulations .

In Australia, an architect is a licensed professional responsible for designing, planning, and overseeing the construction of commercial buildings and outdoor spaces . They hold professional qualifications, have completed a period of practical experience in architecture, and have passed the Architectural registration exam .

In the context of commercial construction in Australia, an arch is a structural element characterized by a curved shape that spans an opening, such as a door or window . It is typically constructed of various materials, including masonry, concrete, or steel, and is designed to provide structural support and stability to a building .

In the context of commercial construction in Australia, the term "apex" has a specific meaning. The apex refers to the highest point or peak of a structure, such as a roof . In roofing, it is the point where the rafters join .

In the Australian construction industry, the term "apex" is used to describe the uppermost point of a building or structure. This term is widely used in the industry, including in the National Standard for Construction Work .