Which type of sprinkler is designed to discharge most of its water to one side and is useful in corridors, offices, and hotel rooms?

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Sprinkler discharge patterns depend on how the head is oriented and mounted. A sidewall sprinkler is installed on a wall and is designed to send most of its water horizontally toward the occupied space along that wall. This makes it ideal for corridors, offices, and hotel rooms where the ceiling may have obstructions or where you want to cover the length of a narrow space efficiently by directing spray across the room rather than straight downward. In contrast, pendent sprinklers spray downward from the ceiling, upright sprinklers spray outward and downward from the ceiling, and concealed heads are hidden for aesthetics rather than optimized for a particular spray direction. So, a sidewall sprinkler best fits the described setting.