1. Bearings are provided in bridges to

   A) allow translation and rotation in bridges

   B) transfer forces from superstructure to substructure

   C) isolate superstructure from substructure

   D) All of these

 

2. The design size of elastomeric bearings are based on striking a balance between the provision of sufficient stiffness to resist high compressive force and the flexibility to allow for translation and rotation movement.

   A) True

   B) False

 

3. Lead cores are provided in Laminated Elastomeric Bearings to

   A) prevent the rubber layers from bulging

   B) increase ductility

   C) increase axial load capacity

   D) increase damping capacity

4. Crack width is limited in reinforced concrete to

   A) prevent corrossion of reinforced bar

   B) prevent spalling of concrete

   C) prevent flexural failure

   D) increase tensile strength

5. In class 1 prestressed bridges

   A) No tensile stresses are allowed

   B) Flexural tensile stresses, but no visible cracking allowed

   C) Flexural tensile stresses, but surface crack widths not exceeding a maximum value

   D) none of these

 

Click the Next Question

Image Courtesy: en.wikipedia.org