Concrete decks are to be checked over supports for cracks, spalls, and which condition?

Concrete decks are to be checked over supports for cracks, spalls, and which condition?

• A. Cracking
• B. Spalls
• C. Crushing
• D. Deformations

Answer: (C)

When inspecting concrete decks at the bearing supports, you’re looking for signs that the concrete at the contact area has been stressed beyond its capacity. Cracking and spalling show surface or edge distress, but crushing specifically points to the concrete under the bearing actually yielding or failing in compression. Look for a crushed, powdery, or gouged bearing surface, possible exposed aggregate, and a loss of cross‑section at the support. This indicates the bearing strength is being exceeded and the structural capacity at the support may be compromised, which can lead to greater deflection, cracking, or collapse if not addressed. Deformations or excessive deflection are related symptoms but do not directly indicate crushing of the bearing zone.

When inspecting concrete decks at the bearing supports, you’re looking for signs that the concrete at the contact area has been stressed beyond its capacity. Cracking and spalling show surface or edge distress, but crushing specifically points to the concrete under the bearing actually yielding or failing in compression. Look for a crushed, powdery, or gouged bearing surface, possible exposed aggregate, and a loss of cross‑section at the support. This indicates the bearing strength is being exceeded and the structural capacity at the support may be compromised, which can lead to greater deflection, cracking, or collapse if not addressed. Deformations or excessive deflection are related symptoms but do not directly indicate crushing of the bearing zone.