Structures are designed to be strong and stable.
Civil and structural engineers design and build structures that are stable and strong. Materials that are right for a structure must be suggested in a design concept. There are many types of structures, each unique and different from the other. Bridges are some structures using these unique designs. The Engineering design concept is a good way to solve problems. Engineers, design, build, test, fix any mistakes, and redesign to find the best structural solutions.