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Because most buildings now they just put one button so people stop clicking both
by tamimio 3mo ago
Because most buildings now they just put one button so people stop clicking both
- what 3mo agoWhat? I’ve never seen that. The elevator needs to know which way you want to go.
- allannienhuis 3mo agoOn the ground/lowest floor, there's only one button as there's only one way to go.
- cozzyd 3mo agoi just saw this for the first time today in Romania...
- userbinator 3mo agoIt doesn't; it just needs to know it was called. You make your selection once it arrives. Look up the early history of elevators and you'll see a progression from fully manual in-car up/down controls (often with a dedicated human operator); various semi-automatic systems with minor improvements like automatic leveling and door control; and then operatorless systems that started with nondirectional calls: https://liftescalatorlibrary.org/paper_indexing/papers/00000073.pdf https://liftescalatorlibrary.org/paper_indexing/papers/00000...
- Ekaros 3mo agoIt is reasonable if you either have low load say a residential building where lift is often idle. Or low number of floors where travel times in either case are short.
- rsanek 3mo agoThat has not been my experience, and logically it doesn't really make much sense. If you do so, you are making the problem strictly worse.
- userbinator 3mo agoNondirectional calls are mostly found in very early (pre-war) or small building (3-4 floors) installations.
- userbinator 3mo agoPlease see: https://liftescalatorlibrary.org/paper_indexing/papers/00000073.pdf https://liftescalatorlibrary.org/paper_indexing/papers/00000... "2.3 Non-directional collective Non-directive collective control provides a single pushbutton at each landing. This pushbutton is pressed by passengers to register a landing call irrespective of the desired direction of travel. Thus, a lift travelling upwards, for example, and detecting a landing call in its path stops to answer the call, although it may happen that the person waiting at the landing wishes to go down. This type of control is only acceptable for short travel lifts."