Slab

RCC Simply Supported Bridge Slab — Design Calculator

Generates approximate design results, influence-line based moving load placement and printable PDF report (formulas shown as HTML entities).

Inputs

1. Span of bridge (L) in m 2. Width of bridge (B) in m 3. Wearing course type Bituminous (BC) Concrete Tile Asphalt

4. Wearing course thickness (mm)

5. Density of wearing course (kN/m³)

6. Loading type Single vehicle/load Combination (multiple vehicles / lanes) 7. Select vehicle preset (drag to add)

Selected vehicles (click to remove)

8. Additional uniform loads (kN/m) due to kerbs, crash barrier, footpath, railing

(kN/m total)

9. Concrete Grade M25M30M35M40 10. Steel Grade (fy in MPa) Fe415Fe500 11. Assumed slab thickness, overall (mm)

Notes: results are approximate. Use detailed grillage/FE analysis for final design. Formulas and intermediate steps are displayed in the PDF as HTML entities.

Results

Run the design to see outputs: max bending moment, shear, torsion, critical load combination, stresses, strains and crack width.