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Slab Designer

Design a 3.5 × 4.5 m two-way corner panel in a 150 mm slab to IS 456, carrying a factored load of 12 kN/m² with M25 concrete and Fe415 steel.

  1. Under Design Code / Country, select India. Under Slab Type, select Two-Way.
  2. In Panel Geometry, enter Short span lx 3.5 m and Long span ly 4.5 m, and set Panel Type to Two adjacent edges discontinuous.
  3. In Loading, enter Factored load (w) 12 kN/m².
  4. In Section & Materials, enter Overall depth (D) 150, Clear cover 20 and Bar diameter 10 mm, Concrete grade fck 25 and Steel grade fy 415 MPa.
  5. In Serviceability & Detailing (optional), enter Service load (unfactored) 8 kN/m².
  6. Select Run Design.

Codes

  • IS 456:2000 (Annex D coefficients, Table 26)
  • ACI 318-19
  • EN 1992-1-1

Limits

  • Annex D two-way coefficients apply to panels with ly/lx ≤ 2; a longer panel acts one-way, so design it as one.
  • Flat slabs use the direct design method.
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