In the context of Australian commercial construction projects, "perpends" refer to the vertical joints between bricks or blocks in masonry work. These joints are typically filled with mortar and are crucial for the structural integrity and aesthetic appearance of a wall. Proper alignment and filling of perpends are essential to ensure the stability and weatherproofing of the masonry structure. In construction specifications, attention to perpends is important to maintain consistent spacing and alignment, contributing to the overall quality and durability of the building.

A pergola is a structure that provides shade and shelter, typically consisting of a framework of vertical posts or columns supporting horizontal beams or rafters. It is often used to create an outdoor living space or to enhance the aesthetic appeal of a building's exterior. Pergolas can be made from various materials, including wood, metal, or composite materials, and can be designed in different styles to complement the architectural design of the building.

A "pediment" refers to an architectural element that is typically found above the entrance of a building or as a decorative feature on the facade. It is a triangular or arched section that sits atop a horizontal structure, such as a portico or a series of columns. Pediments are often used to add a classical or formal aesthetic to a building's design.

A "party wall" refers to a wall that is shared by two adjoining properties. This type of wall is typically constructed on the boundary line between two separate properties and serves as a structural support for both buildings. Party walls are common in urban areas where buildings are constructed closely together, such as in commercial districts or densely populated areas.

In the context of Australian commercial construction projects, a "partition" refers to a non-load-bearing wall or divider used to separate spaces within a building.

Particle board is a type of engineered wood product made from wood chips, sawmill shavings, or even sawdust, which are bonded together with a synthetic resin or other suitable binder and pressed into sheets. It is commonly used for a variety of applications due to its affordability and versatility.

A parapet is a barrier or low wall that extends above the edge of a roof, balcony, walkway, or other structure . It is designed to provide a safety barrier to prevent falls from heights and to protect the building and its occupants from wind, rain, and other environmental elements.

In the context of Australian commercial construction projects, the term "panel" can refer to several different components or concepts, depending on the specific context in which it is used.

A pane refers to a flat sheet of glass used in windows, doors, and other structures . This definition is relevant to the construction industry, where glass panes are a common material used in building design and construction.

A P-trap is a plumbing fixture that serves an essential function in drainage systems. It is a U-shaped or P-shaped pipe located beneath sinks, toilets, and other plumbing fixtures. The primary purpose of a P-trap is to prevent sewer gases from entering the building through the plumbing fixtures.

In the context of Australian commercial construction projects, "overloading" typically refers to the practice of placing excessive weight or stress on a structural element, system, or process beyond its designed capacity.

The term "overhang" refers to an extension or protrusion of a building's structure beyond its main walls or foundation. This architectural feature can serve various purposes, such as providing shelter, enhancing aesthetics, or accommodating specific design requirements.

In the context of Australian commercial construction projects, "overflashing" refers to the installation of additional flashing material over existing flashing or roofing elements. Flashing is a crucial component in construction, used to prevent water ingress at joints, edges, and other vulnerable areas of a building, such as around chimneys, skylights, and roof valleys.

An "outside corner" refers to the external angle or edge where two walls or surfaces meet. This is typically seen in the building's exterior or in interior spaces where walls form an outward-facing angle. Outside corners are critical in construction as they often require specific detailing to ensure structural integrity, weatherproofing, and aesthetic appeal.

In the context of Australian commercial construction projects, "orthogonal projection" refers to a method of representing three-dimensional objects in two dimensions. This technique is commonly used in architectural and engineering drawings to convey the dimensions and layout of a structure accurately.