RCC slab workbench

Wizard input · live verification · audit-ready reports

Awaiting input

1 Geometry

2 Case

3 Inputs

4 Results

Step 1 — Plan geometry

Clear spans in metres. The shorter side is lx; slab type follows IS 456 practice (Ly/Lx).

Length L (m)

Breadth B (m)

◇

Two-way slab

Ly / Lx < 2 — moments are shared in both directions (coefficient method).

Step 2 — Structural case

Select support and edge conditions. Options are constrained by detected slab type.

Design case

Step 3 — Materials, loads & section

Self-weight uses 25 kN/m³. Ultimate load factor γf = 1.5 on (DL + LL + finishes) for the combinations shown.

Materials

Concrete grade

Steel grade

Clear cover (mm)

Support width (mm)

Loads (kN/m²)

Live load

Floor finish / services

Section & reinforcement

Overall depth D (mm)

150

Main bar diameter (mm)

Distribution / other way (mm)

Show live calculation trace on screen

Complete the wizard to generate the design summary and export packages.

Project registry

Metadata is embedded in printed reports and PDF exports for traceability (aligns with typical “slab design” calculation file headers).

Project reference

Job title

Client

Organization

Responsible engineer

Revision notes

Code basis & scope

Mapped to IS 456:2000 clauses commonly cited in slab design sheets. Extend or override per your office “slab design.pdf” / QA checklist where it differs.

Cl. 22.2 Effective span for slabs and beams (support width interaction).
Cl. 23.2 Deflection limits — span/depth ratios and modification factor (simplified fs approach in software).
Table 26 Bending moment coefficients for rectangular slabs (simply supported / restrained sets).
Cl. 26.5.2.1 Minimum reinforcement — 0.12% of gross area (Fe 415/500).
Cl. 40 Shear strength — τc from percentage of steel (slab strip check; punching not included).

Live loads: verify magnitudes against IS 875 (Part 2) for occupancy / use; software does not select load cases automatically.