Project Information (optional)

Project Name

Owner / Client

Project Address

Occupant Load

Use Type

Area per Floor (m²) required

Load Factor (m²/person)

If you leave the Load Factor empty, the tool will apply a typical advisory value for the selected use type.

Egress / Evacuation Parameters

Effective Bottleneck Exit Width (m) required

Walking Speed (m/s)

Crowd Density (people/m²)

Travel Distance to Exit (m)

Target Time (min) – advisory

Number of Storeys considered

Simplified movement model: total people = people per floor × storeys; effective speed = min(entered speed, 1.4 − 0.37 × density); time = travel distance / effective speed + total people / (density × effective speed × effective exit width). Time is converted from seconds to minutes. Area is per floor; all storeys are assumed to share the entered effective bottleneck width. This is not a complete evacuation assessment: pre-movement, stairs, smoke, assisted evacuation and merging are not modeled.

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Results

Occupant Load (persons)

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Required Exit Width (m) *

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Modeled Movement Time (min)

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Provided Exit Width (m)

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Time vs Target

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Notes

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* Required width is back‑calculated to reach the target time given current parameters.

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Occupant Load & Evac – Preliminary Summary Report

Project: —

Owner: —

Address: —

Use Type: —

Area per Floor (m²): —

Load Factor (m²/person): —

Total Exit Width (m): —

Speed (m/s): —

Distance (m): —

Computed

Occupants	Required Width (m)	Provided Width (m)	Time (min)	Status
—	—	—	—	—

Preliminary Estimate Only: This tool provides advisory values; final egress design must follow NFPA/IBC, local codes, and AHJ approvals.