According to CALTRANS specifications, no pipe may project more than how many inches into a manhole?

According to CALTRANS specifications, no pipe may project more than how many inches into a manhole?

• A. 1 inch
• B. 2 inches
• C. 3 inches
• D. 4 inches

Answer: (B)

The limit is two inches. Keeping pipe projections into a manhole to a maximum of two inches ensures there’s enough interior room for inspection, cleaning, and maintenance inside the manhole while still allowing a proper connection to the pipe. If a pipe sticks in too far, it can interfere with the manhole walls, fittings, or the ability to place and remove the manhole cover, and it can create snag and clearance problems for maintenance personnel and equipment. If it doesn’t project at all or projects too much, jointing and alignment could be affected, so a standard two-inch limit provides a practical balance that Caltrans specifies.

The limit is two inches. Keeping pipe projections into a manhole to a maximum of two inches ensures there’s enough interior room for inspection, cleaning, and maintenance inside the manhole while still allowing a proper connection to the pipe. If a pipe sticks in too far, it can interfere with the manhole walls, fittings, or the ability to place and remove the manhole cover, and it can create snag and clearance problems for maintenance personnel and equipment. If it doesn’t project at all or projects too much, jointing and alignment could be affected, so a standard two-inch limit provides a practical balance that Caltrans specifies.