Civil Engineering
Structures, surveying, soil mechanics
Showing 51–53 of 53 questions
The principle of virtual work states that for equilibrium of a structure:
Correct Answer:
B. Sum of virtual work by all forces is zero
EXPLANATION
Principle of virtual work: For equilibrium, ΣδW = 0. Sum of virtual work by internal and external forces must be zero.
In influence line diagram, what does the ordinate represent?
Correct Answer:
B. Coefficient of influence for unit load
EXPLANATION
Ordinate in influence line = coefficient showing magnitude of response at a fixed section per unit moving load.
What is the degree of static indeterminacy for a fixed beam with one internal hinge?
Correct Answer:
B. 2
EXPLANATION
Fixed beam has 3 reaction components. One internal hinge provides 1 additional equation (BM = 0). DI = 3 - 1 = 2