🏗️ IS:456 Slab Design & Load Calculator

One-way slab limit state design, factoring DL+LL and required steel (Ast) distributions.

Clear Span Length (m)

Overall Slab Depth (D) (mm)

Support Width (mm)

Main Bar Size (Ø) 8 mm 10 mm 12 mm

Live Load (kN/m²) [IS:875]

Floor Finish Load (kN/m²)

Concrete Grade M 15 M 20 M 25

Steel Grade (TMT) Fe 415 Fe 500 Fe 550

Run Slab Design

⚖️ Factored Load (Wu)

0 kN/m²

🔄 Design Moment (Mu)

0 kN·m

🔗 Main Reinforcement

0

Req Ast: 0 mm²

〰️ Distribution Steel

0

Along Length (8mm Ø)

🏗️ IS:456 Beam Design & Load Calculator

Limit state dimensions, Moment and Shear capacities, and Tension steel generation.

Clear Span Length (m)

Beam Width (b) (mm)

Overall Depth (D) (mm)

Superimposed UDL (kN/m)

Concrete Grade M 20M 25M 30

Steel Grade (TMT) Fe 415Fe 500

Run Beam Design

🔄 Factored Moment (Mu)

0 kN·m

✂️ Factored Shear (Vu)

0 kN

🔗 Required Tension Steel

0

Ast: 0 mm²

〰️ Shear Links (Stirrups)

Provide Design

🏗️ IS:456 Column Design & Load Calculator

Axial load capacity analysis, Short/Slender logic, and Longitudinal steel calculation.

Factored Axial Load Pu (kN)

Column Width (mm)

Column Depth (mm)

Unsupported Length (m)

Concrete Grade M 20M 25M 30

Steel Grade (TMT) Fe 415Fe 500

Run Column Design

📏 Column Slenderness

Short Column

Ratio Check (Lex/D)

🧱 Gross Area Cap (Pu max)

0 kN

Max practical limit based on dims

🔗 Longitudinal Steel (Asc)

0

Req Asc: 0 mm²

〰️ Lateral Ties

8mm Ø @ 200mm

c/c Tie configuration

🏗️ IS:456 Footing Design & Load Simulator

Isolated pad footing analysis: Evaluates Area bounds, Limit State Upward Pressure, Punching Shear capabilities & Base Reinforcement gridding.

1. Imposed Forces & Initial Dims

Axial Column Load (kN)

Soil Bearing Cap (SBC) (kN/m²)

Concrete Grade M 20M 25M 30

Steel Grade Fe 415Fe 500

2. Substructure Dimension Estimations

Column Width b (mm)

Column Depth D (mm)

Pad Length L (m)

Pad Width B (m)

Pad Depth (Thk) (mm)

Simulate Footing Design

🧱 Factored Upward Press.

0 kN/m²

Actual Base Area: 0 m²

🔪 Punching Shear Assessment

SAFE ✅

τv: 0.0 | τc: 0.0

🔗 Pad Reinforcement Matrix (Bottom Mesh)

0

🌍 IS:6403 Soil Bearing Capacity (SBC) Calculator

Geotechnical analytical derivations for Gross & Net Safe Bearing Capacities via Terzaghi/Vesic limit bounds.

1. Foundation Geometry

Footing Shape Matrix Square Pad Continuous / Strip Circular

Footing Width (B) / Dia (m)

Foundation Depth (Df) (m)

Factor of Safety (FOS)

2. Subsoil Shear Parameters

-- [Optional] Auto-fill internal variables via Standard Soils -- Soft Clay Matrix (c = 15) Medium Clay (c = 30) Stiff Clay (c = 50) Loose Sand (Φ = 30°) Medium Sand (Φ = 33°) Dense Sand (Φ = 38°) Murrum / Well Graded Gravel (c = 10, Φ = 35°)

Effective Unit Wt (γ) (kN/m³)

Cohesion (c) (kPa)

Friction Angle (Φ) (Deg)

Compute Soil Capacity

📦 Net Safe B.C. (qns)

0 kN/m²

Limits for structural padding area

🌍 Gross Safe B.C. (qs)

0 kN/m²

Includes earth overburden weight

IS:6403 Analytical Bearing Factors Processed

Nc: 0 | Nq: 0 | Nγ: 0

🏗️ IS:456 Staircase Design Simulator

Dog-legged / straight flight calculations: Automatic inclination loading, waist slab mapping, and tension steel projection.

Step Riser (R) (mm)

Step Tread (T) (mm)

Waist Slab (D) (mm)

Effective Span (L) (m)

Live Load (kN/m²)

Floor Finish (kN/m²)

Concrete Grade M 20M 25

Steel Grade (TMT) Fe 415Fe 500

Compute Flight Dynamics

⚖️ Factored Area Load (Wu)

0 kN/m²

🔄 Max Bending Moment (Mu)

0 kN·m

🔗 Waist Slab Reinforcement (Per Meter Run)

0

🌍 Retaining Wall Stability & Geotech Checker

Cantilever earth pressure analysis. Automatically checks Sliding friction, Overturning safety limits, and Base Pressures.

1. Wall Geometry Configuration

Total Elev. (H) (m)

Total Base Width (B) (m)

Base Slab thick. (m)

Stem thick. (m)

Toe Projection (m)

2. Backfill Soil Capabilities

Friction Angle (Φ) (deg)

Soil Density (γ) (kN/m³)

Safe Bearing (SBC) (kN/m²)

Friction Coeff. C (μ)

Scan Stability Thresholds

⚔️ Lateral Earth Pressure

0 kN

Active Soil Push Force

🔄 FOS Overturning

0.0

IS Target Minimum: > 2.0

🛤️ FOS Sliding

0.0

IS Target Minimum: > 1.5

Max Bearing Stress Pmax (Toe) vs SBC

P_max: 0 | P_min: 0