Elevator
From Leo's Notes
This page was last edited on 19 May 2013, at 07:48.
Acceleration and Velocity
The total amount of time it takes for a traction elevator car to start, move, and stop a given amount of distance at different elevator speeds can be generalized from the table below.
A typical traction elevator accelerates at <3.5fps for <= 400fps, and >4.5fps for > 500fpm.
| Speed (ft/m) vs. Height (ft) | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 20 | 30 | 10ft+ |
|---|---|---|---|---|---|---|---|---|---|---|
| 100ft/m | 7.6 | 8.2 | 8.8 | 9.4 | 10.0 | 10.6 | 11.2 | 14.2 | 20.2 | 6.0 |
| 150ft/m | 6.7 | 7.1 | 7.5 | 7.9 | 8.3 | 8.7 | 9.1 | 11.1 | 15.1 | 4.0 |
| 200ft/m | 5.8 | 6.1 | 6.4 | 6.7 | 7.0 | 7.3 | 7.6 | 9.1 | 12.1 | 3.0 |
| 300ft/m | 5.2 | 5.4 | 5.6 | 5.8 | 6.0 | 6.2 | 6.4 | 7.4 | 9.4 | 2.0 |
| 400ft/m | 4.8 | 5.0 | 5.1 | 5.2 | 5.4 | 5.6 | 5.7 | 6.5 | 7.0 | 1.5 |
| 500ft/m | 4.3 | 4.4 | 4.5 | 4.6 | 4.7 | 5.2 | 6.4 | 1.2 | ||
| 700ft/m | 4.3 | 4.4 | 4.5 | 4.6 | 4.7 | 5.2 | 6.1 | 0.86 | ||
| 1000ft/m | 4.3 | 4.4 | 4.5 | 4.6 | 4.7 | 5.2 | 5.8 | 0.6 |
Examples:
- For a 300ft/m elevator to move 15 ft, it will take 6.4 seconds.
- For 400ft/m elevator to move 150 ft
- The first 30 ft takes 7.0 seconds
- The remaining 120 ft takes 18 seconds, calculated by: 120ft / 1.5 seconds/10ft = 18 seconds
Hydraulic elevators operate at a top speed of 200fpm