06-12-2011, 09:44 PM
Dear Mohammed,
It's usual starts a design with some practical dimensions. For example: -for concrete beans, we starts with the equivalent height of 8% to 10% of span.
After pre-dimensioning, we check if deformations, moments, shear forces, etc, are compatible with our preliminary pre-dimensioning.
Now, we starts a try-and-error changes until the structure is OK!
Naturally, experienced structural engineers can do this with only few interactions...
If you need more explanations, please returns with clear points that you don't understand.
Regards
Dell Brett
It's usual starts a design with some practical dimensions. For example: -for concrete beans, we starts with the equivalent height of 8% to 10% of span.
After pre-dimensioning, we check if deformations, moments, shear forces, etc, are compatible with our preliminary pre-dimensioning.
Now, we starts a try-and-error changes until the structure is OK!
Naturally, experienced structural engineers can do this with only few interactions...
If you need more explanations, please returns with clear points that you don't understand.
Regards
Dell Brett