Knowledge is based on forgetting.
Partially prestressed elements are used in the practice and their design is based on rational analysis, on the satisfaction of the requirements of both serviceability and ultimate strength limitations and finally on the engineering judgment.
The design method is based on plastic analysis of beam section at ultimate loads and elastic analysis at serviceability loads.
The comparison is based on an extensive parametric study of the tower geometry in order to access the structural tower ultimate and serviceability limit states.
Two different sets of serviceability deflection limits are then considered: deflection limits recommended by the Steel Construction Institute (SCI), which is based on control of differential deflections, and other deflection limits based on suggestions by industry.
The flexural design procedure is based on a moment curvature analysis and a specified increase of the live load carried by the bridge to satisfy specific serviceability requirements.
Bitcoin is based on cryptography.
"Everything is based on materials".
It is based on performance.
