Input

This is a web-app that designs precast prestressed Double-Tee sections with or without topping concrete. Once the user inputs all necessary information and clicks the 'Analyze' button, the app:

• Renders a 3d (perspective) and section drawing of the element
• Calculates section properties for precast and composite sections
• Designs the Double-Tee member according to ACI318-19 and PCI Design Handbook 7th edition, during which it:
• Calculates the short-term and long-term prestressing stress losses
• Performs short-term and long-term stress checks
• Performs ultimate moment capacity checks
• Performs shear capacity checks
• Performs deflection checks

The dimensions which should be input in the boxes are shown in the figures. Other input parameters are:

• SDL: Superimposed dead load acting in gravitational direction
• LL: Live load acting in gravitational direction
• f_cp': Compressive capacity of precast concrete
• f_ct': Compressive capacity of topping concrete
• PS: Type of prestressing steel material
• %_ps: Ratio of initial jacking stress to ultimate prestressing steel strength
• Δ_A: Estimated anchorage seating for anchorage seating loss calculation
• RH: Relative humidity for shrinkage loss calculation

Please use . not , for decimal points