In engineering design, what is a constraint?

In engineering design, a constraint is defined as a limitation or restriction that must be considered when developing a design solution. Constraints can come in various forms, including physical limitations (like size or material properties), budgetary restrictions, regulatory requirements, and functional criteria that the design must meet. These factors play a crucial role in guiding engineers to create viable solutions that are not only feasible but also meet the necessary specifications and requirements of the project. Understanding and identifying constraints is fundamental to the design process, as they help narrow down the design options and ensure that the final solution is practical and achievable within the given parameters.