So in community pool, i moved a prop to the place below the stairs(where there is some water). It happens that someone jumped from above, and died by falling into it. The Mod online by then (Scoop Life), slayed me. Was that action correct? I mean, the person who jumped could´ve descended by the ladder, or looked before jumping, so I think its more his fault than mine.
The ladder is used primarily for climbing up. If you randomly cause the death or damage another player, it is RDM and you will be punished accordingly. The actions taken against you were correct and I advise you refrain from doing that anymore. Edit: This has also been asked before and can be found using the search bar.
http://www.seriousgmod.com/threads/a-guide-to-sttt-extended-rules-info-tips-tricks.12605/ The rule is seen at the beginning of the post, under traitorous. Yes, it is slayable.