During the testing of bridges, a Load Test is typically conducted on a newly completed bridge to
- ADetermine the chemical composition of the concrete.
- BMeasure the wind speed at the bridge deck level.
- CCalculate the exact cost of construction.
- DVerify the structural behaviour and check if the actual deflections are within the design limits.Correct
Solution
Concept
Bridge Load Testing
Formula
N/A
Step-by-step solution
1. Identify the main objective of conducting a load test on a newly constructed bridge. 2. Recall that load tests verify structural performance and ensure deflections remain within allowable design limits under load. 3. Select Option D as the correct choice.
Explanation
A load test is performed by placing known heavy weights on a newly built bridge to see how it responds under real-world conditions. This ensures the structure is safe, strong, and that its bending or deflection stays within safe allowable limits.
Shortcut
To remember the purpose of a Bridge Load Test, use the rule "LOAD = Live Testing for Deflection": - L - Live Load Application: Place actual weights on the bridge. - O - Observe Behavior: Check how the structure responds in real conditions. - A & D - Allowable Deflection: Verify that bending/deflection stays within safe design limits.
Common mistake
A common mistake is selecting Option A or B by confusing a full structural load test with routine material sampling or environmental monitoring. In reality, a load test specifically applies physical loads to verify structural integrity and check that actual deflections stay within safe design limits.
Correct answer: D) Verify the structural behaviour and check if the actual deflections are within the design limits.