Estimate body fat percentage by the US Navy formula.
按人员流动模型,根据疏散人数、出口宽度、通行能力、行走速度和距离,估算行走时间与通过时间。
请输入参数后计算。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Travel time | Tt = L/V, V≈1.2 m/s | SFPE Handbook 5th |
| Togawa formula | Ts = 0.11N/A + L/V | Togawa 1963 |
| Exit flow rate | F ≈ 1.32 p/(m·s) on stairs | P-M Model |
| RSET | Detection+Alarm+Pre-movement+Move | ISO 20414 |
| Safety margin | RSET ≤ 0.8·ASET | NFPA 101 Annex |
| Stair speed | 0.56–0.7 m/s downstairs | SFPE Handbook |