showstack / glossary / shock-load
Shock load 衝擊負載
A sudden change in the velocity of a suspended load, which produces a force far greater than its static weight. A hoist snatching up slack, a scenic piece dropping onto its dead, a person falling into a lanyard: all of them briefly load the system many times harder than the mass alone would suggest.
中文
懸吊負載速度突然改變所產生的力，遠大於其靜態重量。葫蘆猛然吃緊、景片落到定位、人員墜落被安全繩拉住，這些瞬間對系統的負載都遠高於質量本身所暗示的數字。
Regional usage
| Where | Term | Note |
|---|---|---|
| UK / US | Shock load | |
| HK / TW | 衝擊負載 |
Easy to get wrong
Design factors on rigging hardware cover normal use, not shock. "It is rated to five times the load" is not permission to drop things onto it.
Next to this
Safe working load (SWL) / working load limit (WLL)安全操作負荷The maximum load a piece of rigging hardware is rated to carry in normal service — not its breaking strength,…Bridle分力吊索Two or more legs of steel taken from separate structural points down to a single hanging position, used when …
Sources
- Theatrecrafts glossary of technical theatre terms — Theatrecrafts / ABTT heritage primary
Understand the mechanism
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