Which term refers to the vertical pipe supplying water to sprinklers?

Which term refers to the vertical pipe supplying water to sprinklers?

• A. Sprinkler Activation
• B. Lavatory
• C. System Riser
• D. Automatic Water Supply

Answer: (C)

The vertical pipe supplying water to sprinklers is called the system riser. In a sprinkler system, the riser is the vertical backbone that carries water from the supply into the building and feeds the sprinkler branch lines on each floor. It’s the specific term for that main vertical piping, not the moment when a sprinkler activates, not a bathroom fixture, and not just a generic automatic water supply. Why this is the best fit: it names the exact component that provides water to the sprinklers—the vertical supply line that runs upward through the building to feed the individual sprinkler heads. The other terms don’t describe that pipe: sprinkler activation is the event of water release, a lavatory is a sink, and automatic water supply is a broad term for water that’s automatically supplied, not the specific vertical piping to sprinklers.

The vertical pipe supplying water to sprinklers is called the system riser. In a sprinkler system, the riser is the vertical backbone that carries water from the supply into the building and feeds the sprinkler branch lines on each floor. It’s the specific term for that main vertical piping, not the moment when a sprinkler activates, not a bathroom fixture, and not just a generic automatic water supply.

Why this is the best fit: it names the exact component that provides water to the sprinklers—the vertical supply line that runs upward through the building to feed the individual sprinkler heads. The other terms don’t describe that pipe: sprinkler activation is the event of water release, a lavatory is a sink, and automatic water supply is a broad term for water that’s automatically supplied, not the specific vertical piping to sprinklers.