Bridges & Structures

Comprehensive Design Example for Prestressed Concrete (PSC) Girder Superstructure Bridge

3. Flow Charts

Creep and Shrinkage Calculations Flow Chart Text

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1. Calculate the creep coefficient, Psi(t, ti), for the beam at infinite time according to S5.4.2.3.2. (Design Step C1.2)
2. Calculate the creep coefficient, Psi(t,ti), in the beam at the time the slab is cast according to S5.4.2.3.2. (Design Step C1.3)
3. Calculate the prestressed end slope, theta. (Design Step C1.4)
4. Calculate the prestressed creep fixed end actions (Design Step C1.5)
5. Calculate dead load creep fixed end actions (Design Step C1.6)
6. Determine creep final effects (Design Step C1.7)
7. Calculate shrinkage strain in beam at infinite time according to S5.4.2.3.3.(Design Step C2.1)
8. Calculate shrinkage strain in the beam at the time the slab is cast (S5.4.2.3.3). (Design Step C2.2)
9. Calculate the shrinkage strain in the slab at infinite time (S5.4.2.3.3). (Design Step C2.3)
10. Calculate the shrinkage driving end moment, M_s (Design Step C2.5)
11. Analyze the beam for the shrinkage fixed end actions (Design Step C2.6)
12. Calculate the correction factor for shrinkage (Design Step C2.7)
13. Calculate the shrinkage final moments (Design Step C2.8)

END.

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