What other methods can we use other than computers to design a bridge?

What other methods can we use other than computers to design a bridge? If yes, why. If no, why. How do we use a computer to design a bridge? What are the things we must consider before building a bridge like the safety of bridge?

What other methods can we use other than computers to design a bridge?internet

Using a small scale model

What other methods can we use other than computers to design a bridge?network

Engineers for centuries have been designing bridges and many other structures using paper and pencil and slide rules or just computations before computers. By looking up or computing the strengths of materials and the dynamics of the structure, they come up with the design.

When doing the design by hand, they always put in a 鈥渇udge鈥?factor to assure the structure would withstand the stresses involved plus a little more. Now with the advent of computers, they are designing the structure to the exact point they want to save time and costs. In my opinion, that is why newer structures are failing at a greater rate than older (pre computer) structures.

JUST MY OPINION 鈥?BASED ON NO REAL EVIDENCE
no, bridges were never designed before the computer.
The good, almost forgotten method of using a draftsman's pencil, paper, protractors, and other engineering tools.. all the tools used prior to the advent of the computer
Study bridges from around the world. Find bridges that cover similar geology and geography. (Rock formations, bridging over a lake, bay, in a city, out in a country, etc.)