There are instances when you must have a professional's help on your project. Some examples include:
When you are constructing a new building or addition in the foothills area where engineered foundations are required along with Soils and Geology Reports to substantiate all design assumptions
When the design of your structure requires engineering calculations, i.e. when you are using prefabricated trusses or glued-laminated beams or you are not designing by conventional standards
When you are building a retaining wall over 48 inches in height; measured from the bottom of footing to the top of the wall or the retaining wall has a surcharge i.e. slope greater than 2:1, structure
There are instances when you are not required to but should seriously consider retaining a professional to help you with your project. Some examples include:
When the size or the complexity of the project exceeds the time you can devote to it. A rushed job on the drawings or a lack of experience can lead to errors, which may be costly to fix during construction.
When the cost of the project justifies the expense. Professionals can assist you in accomplishing the design goals using the most efficient methods/materials at a cost within your budget.