In Scissor Stairs, which landings have standpipe connections?

• A. Every floor
• B. Alternating Floors
• C. Ground floor only
• D. Top floor only

Answer: (B)

Scissor stairs use two interlocking stairwells with landings that alternate sides floor to floor. Because of this offset, the most practical and common arrangement is to place standpipe connections on alternating floors—one on a landing in one stairwell, then on the next floor’s landing in the other stairwell. This pattern keeps piping layout efficient and ensures a reachable standpipe on the route a firefighter would take up the stairs, without duplicating connections on every single floor. Ground floor only wouldn’t provide water for higher floors, and top floor only would miss the lower floors.