What is the total area of walls and gables typically determined by?

The total area of walls and gables is typically determined by using construction drawings. These drawings provide detailed specifications that outline the dimensions, layouts, and structural components of the building. They allow for precise measurements and calculations by detailing not only the external dimensions but also the internal features and specifications needed to calculate the total wall and gable area accurately.

Using construction drawings ensures that all factors are taken into account, including windows, doors, and any architectural features that may affect the overall area. This method is the most accurate and reliable since it is based on standardized plans that engineers and architects have created, which adhere to building codes and regulations.

Other methods, such as measuring only external dimensions, may overlook important elements that contribute to the actual wall and gable area, leading to inaccurate calculations. Standard guidelines can provide general rules, but they may not apply specifically to each project, making them less reliable than consulting the detailed construction drawings. Relying on personal judgment is subjective and may lead to inconsistencies, as it doesn't ensure adherence to the architectural plans or standards.