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Determination of Member Size

Determination of Member Size. To solve for the size of a column, engineers perform calculations using strengths of materials that have been pre-determined through testing For Example: Common building steel: 50,000 lb/in 2 Concrete: 3,500 lb/in 2  to 5,000 lb/in 2.

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Determination of Member Size

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  1. Determination of Member Size To solve for the size of a column, engineers perform calculations using strengths of materials that have been pre-determined through testing For Example: Common building steel: 50,000 lb/in2 Concrete: 3,500 lb/in2 to 5,000 lb/in2

  2. Determination of Member Size The stress due to this load is σ = Force ÷ Area. In the Figure, the area is unknown and hence the stress is unknown. Therefore, the use of the tensile and compressive strength of the material is used to size the member and the equation becomes Force = Fy x Area Fy

  3. Determination of Member Size Force = Fy x Area: Fy can be the tensile strength or compressive strength of the material Common building steel: 50,000 lb/in2 Concrete: 3,500 lb/in2 to 5,000 lb/in2 Fy

  4. Why is this important? Next time we will be going over foundations and engineering them and these force-member calculations and very important when designing foundations. (like the one some of you helped with the Saturday over spring break) For the CSU smash lab when we design the floor trusses to find out witch class has the better has the better structural engineers?

  5. Which class has the better structural engineers? Activity Purpose: This activity is a competition between the classes to determine which class has the best overall knowledge, construction ability, and teamwork strategy through a structural engineering process. Hence, secrecy regarding the plans of the individual teams is of the utmost importance.

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