Prestressing Information

Prepare section properties, prestress losses, equivalent loads and end effects for the structural model. Structural moment diagrams are generated by that model.

Input Parameters

Span L (m)

Web width b (mm)

Section depth h (mm)

Flange width bf (mm)

Flange thickness hf (mm)

Strand strength fptk (MPa)

Jacking stress factor

Strand modulus Ep (MPa)

Anchorage draw-in Δa (mm)

Wobble coefficient κ

Friction coefficient μ

Concrete strength at stressing f'cu (MPa)

Tendon count n

Left high point a1 (mm)

Midspan low point a2 above soffit (mm)

Right high point a3 (mm)

Enter a1 and a3 below the beam top, and a2 above the soffit at midspan. h1–h4 are inferred using h1/h2=1/4 and h3/h4=1/4: h1=a1, h2=4a1, h3=a3, h4=4a3.

Back to Design Services