| Rough Sawn |  "rough sawn" refers to timber that has been cut from a log using a sawmill but has not undergone |
| Root barrier | root barrier is a versatile solution designed to control and manage the growth of tree and plant roots in Australian |
| Roof Truss | Synonyms - truss, trusses
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| Roof Pitch | Synonyms - Pitch
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| Ridge | the term "ridge" refers to the highest point or the top edge of a roof where two sloping roof planes |
| Retaining wall | a retaining wall is a structure designed to hold or retain soil behind it. These walls are essential for managing |
| Render | In the context of Australian commercial construction projects, "render" refers to the application of a mixture, typically composed of cement, |
| Reinforcing Steel | Reinforcing steel, commonly referred to as rebar and mesh , is a type of steel material used in Australian commercial |
| Reinforced Concrete Construction | Reinforced concrete construction in Australian commercial construction projects refers to the use of concrete that is strengthened with embedded steel |
| Reinforced | "reinforced" typically refers to the use of reinforcement materials to enhance the strength and durability of construction elements, particularly concrete. |
| Regulations | regulations refer to the set of rules and standards that govern the design, construction, and maintenance of buildings and other |
| Reduced Level | the term "Reduced Level" (RL) refers to a vertical measurement that indicates the height of a specific point relative to |
| Rake | In the context of Australian commercial construction projects, "rake" typically refers to the angle or slope of a surface. This |
| Rainwater head (rainwater sump) | a rainwater head, also known as a rainwater sump, is a component of a building's roof drainage system. It serves |
| Rafter | a "rafter" refers to a structural component of a roof. Rafters are inclined beams that extend from the ridge or |
