1. Setbacks, Permissible FAR & Height Engine

Calculates required front, rear, and side open spaces, maximum permissible FAR, and ground coverage.

Active Rule Citation: NBC 2016 Part 3 - Cl. 3.4.1

Proposed Height ($H$) 18 m

Plot Frontage (Width) 24 m

Plot Depth 30 m

Abutting Road Width 12 m

Min Front Setback 4.5 m

Min Side Setback 3.0 m

Max Permissible FAR 2.25

Ground Coverage 60.0%

Footprint Envelope Setback Clearance

Visual plot envelope dynamically calculated in client JavaScript memory.

2. Fire Exit, Egress Capacity & Refuge Area Calculator

Verifies mandatory staircase counts, minimum staircase widths, occupant exit capacities, and refuge floor frequency.

NBC Part 4 - Cl. 4.4.2

Occupancy Classification Group A - Residential Dwellings Group E - Business Offices Group F - Mercantile (Retail / Malls) Group D - Assembly (Theatres / Halls)

Total Occupant Load (Persons)

Building Height ($m$)

Min Aggregate Exit Width 3.50 Meters

Mandatory Staircases 2 Min (Enclosed)

Refuge Area Mandate Every 24m Height

3. Vehicular Ramp Slope Profile & Parking (ECS) Estimator

Verifies vehicular ramp gradient compliance ($1:8$ to $1:10$) and calculates Equivalent Car Spaces (ECS).

NBC Part 3 - Cl. 3.5.1

Basement Depth Drop ($D$) 3.5 m

Ramp Horizontal Run ($L$) 32 m

Built-Up Area ($m^2$) 4,500 m²

Ramp Slope Ratio 1 : 9.1

Gradient Status COMPLIANT

Mandatory ECS 45 Cars

Min Clear Headroom 2.4 m

Smooth transition breaks required at top/bottom (1:16 for 2m length).

4. Light, Ventilation & Courtyard Air Shaft Dimensionalizer

Calculates minimum courtyard air shaft area ($A = H/10$) and openable window lighting area.

NBC Part 8 Sec 1

Building Height ($H$) 18 m

Habitable Room Floor Area 24 m²

Min Shaft Area 16.2 m²

Least Side Dim 3.0 m

5. Barrier-Free Universal Accessibility Validator

Verifies wheelchair $1.5\text{m}$ turning radius clearance, handicap ramp gradient ($\le 1:12$), and toilet door clearances.

NBC Part 3 Annex D

Entrance Ramp Slope $\le 1:12$ provided with continuous handrails at $750\text{mm}$ and $900\text{mm}$ height. Accessible Toilet room size minimum $1.7\text{m} \times 2.2\text{m}$ with outward opening door ($900\text{mm}$ clear). Tactile ground surface indicators (TGSI) laid at entrance steps & elevator landings. Braille call buttons and audio floor announcement in passenger elevators.

6. Structural Seismic Hazard & Wind Load Parameter Matrix

Maps Indian Seismic Zones (II to V) to Zone Factors ($Z$), Importance ($I$), and basic wind speed ($V_b$).

NBC Part 6 / IS 1893

Seismic Hazard Zone Zone II (Low Intensity - Z = 0.10) Zone III (Moderate - Z = 0.16) Zone IV (Severe - Z = 0.24) Zone V (Very Severe - Z = 0.36)

Occupancy Importance Normal Residential (I = 1.0) Educational / Assembly (I = 1.2) Critical Emergency / Hospital (I = 1.5)

Zone Factor ($Z$) 0.16

Design Acceleration Moderate

7. Rainwater Recharge Pit & Rooftop Solar PV Sizer

Calculates mandatory rainwater storage/recharge pit capacity ($m^3$) and rooftop solar PV panel mandates.

NBC Part 11 Eco-Code

Roof Catchment Area 800 m²

Annual Rainfall ($mm$) 1,000 mm

Recharge Pit Vol 32.0 m³

Min Solar PV Area 200.0 m²

8. Client-Side CAD / DXF Floor Plan Polyline Inspector

Drag and drop a DXF or architectural drawing image to perform browser-based polyline and clearance measurement.

Client WebAssembly / JS

Click to Upload CAD Image / DXF Processes 100% locally in browser memory

Inspector Overlay Controls: Setback Clearance Lines Fire Travel Path (30m Max)

Client-Side CAD Canvas Active