Positive Moment Tension is located in which position on the deck?

• A. Between beams at the bottom of the deck
• B. Above beams at the top of the deck
• C. In the middle of the deck
• D. At the edge of the deck

Answer: (A)

When a deck experiences positive moment (sagging), the deck bends with the top in compression and the bottom in tension. The tensile stress develops on the bottom fibers of the deck between the supporting beams, where the bending moment is positive. That’s why Positive Moment Tension is located between beams at the bottom of the deck. The other options don’t match where the bottom fibers are subjected to tension under the typical positive bending moment.