When laying bell-and-spigot sewer pipe, the bell should face which direction?

When laying bell-and-spigot sewer pipe, the bell should face which direction?

• A. Downstream
• B. Upstream
• C. Horizontal
• D. Vertical

Answer: (B)

The bell should face upstream. In bell-and-spigot sewer pipe, you slide the spigot end of the next section into the bell of the previous section, so orienting the bell toward the upstream direction puts the joint in the path where the flow is coming from. This arrangement helps the joint seal more reliably: as you push the pipe sections together, the gasket seats evenly and internal flow pressure aids the seal. It also directs any infiltration or backfill water away from the joint as the line operates, since solids and water move downstream. Horizontal or vertical placement isn’t the issue—the important point is having the bell oriented toward the upstream direction to promote a tight, durable seal.

The bell should face upstream. In bell-and-spigot sewer pipe, you slide the spigot end of the next section into the bell of the previous section, so orienting the bell toward the upstream direction puts the joint in the path where the flow is coming from. This arrangement helps the joint seal more reliably: as you push the pipe sections together, the gasket seats evenly and internal flow pressure aids the seal. It also directs any infiltration or backfill water away from the joint as the line operates, since solids and water move downstream. Horizontal or vertical placement isn’t the issue—the important point is having the bell oriented toward the upstream direction to promote a tight, durable seal.