In what condition would a truss design drawing not need to be submitted for approval?

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A truss design drawing not needing to be submitted for approval can occur when it is produced by a truss manufacturing company. This is because truss manufacturers typically have standardized designs and engineering calculations that have already been vetted for compliance with building codes and engineering standards. Companies that specialize in truss manufacturing are expected to follow rigorous industry practices and are often certified by relevant authorities, which reduces the need for individual approval of each design.

Manufacturers provide assurance that the trusses meet safety and structural requirements, thereby streamlining the approval process. In contrast, drawings by architects or those involving warranties may still require review to ensure they comply with local building codes and standards. Similarly, even simple designs may still necessitate approval to ensure all structural integrity and safety considerations are met. Thus, the expertise and standards upheld by truss manufacturing companies play a crucial role in why their designs may bypass the usual approval requirements.