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

Negative 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. Across the slab
• D. On the outer edge

Answer: (B)

The idea being tested is how bending moments affect where tension occurs in a deck under hogging (negative moment). When a deck experiences negative moment over a support, the bending causes tensile stress in the top fibers of the section while the bottom fibers are compressed. Since the deck sits on top of the beams, that tensile stress shows up at the top surface of the deck, above the beams. So, negative moment tension is located at the top of the deck above the beams. The other options don’t match hogging behavior: tension at the bottom between supports corresponds to positive moment (sagging); a location “across the slab” isn’t a specific stress region in this context; and the outer edge isn’t where hogging concentrates.

The idea being tested is how bending moments affect where tension occurs in a deck under hogging (negative moment). When a deck experiences negative moment over a support, the bending causes tensile stress in the top fibers of the section while the bottom fibers are compressed. Since the deck sits on top of the beams, that tensile stress shows up at the top surface of the deck, above the beams.

So, negative moment tension is located at the top of the deck above the beams. The other options don’t match hogging behavior: tension at the bottom between supports corresponds to positive moment (sagging); a location “across the slab” isn’t a specific stress region in this context; and the outer edge isn’t where hogging concentrates.