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Post Earthquake Evaluation and Repair of Welded Steel Design


Quiz Questions

1.What does AISC stand for?
American Institute of Steel Construction
American Institute of Steel and Concrete
American Institute of Specialized Concrete
None of the above
2. Early steel moment frames tended to be highly redundant and nearly every beam-column joint was constructed to behave as part of the lateral-force-resisting system.
True
False
3.The Post earthquake Evaluation and Repair Process intent is to identify buildings that have sustained sufficient structural damage to compromise future performance, determine the extent and severity of this damage assess the general implications of the damage with regard to building safety and determine appropriate actions regarding building occupancy and repair.
True
False
4.What does figure 1-6 illustrate about?
(Refer Pg 1-13)
Flow Chart for Post-earthquake Actions
Inspection and Classification of Damage
Preliminary Post-earthquake Assessment
None of the above
5.Structural damage observed in steel moment-frame buildings following strong ground shaking can include yielding, buckling and fracturing of the steel framing elements (beams and columns) and their connections, as well as permanent lateral drift.
True
False
6.Weld damage may consist of yielding, buckling or fracturing of the flanges of girders at or near the girder-column connection.
True
False
7.Damage to framing elements of steel moment-frame buildings may be categorized as belonging to the weld (W), girder (G), column (C), panel zone (P) or shear tab (S) categories.
True
False
8.What does AWS stand for?
American Welding Society
American Welding System
American World System
None of the above
9.Following a potentially damaging earthquake, an assessment should be performed for each steel moment-frame building to determine the likelihood of significant structural damage, the implications of this damage with regard to building safety and occupancy and the need for repair.
True
False
10.Prior to performing preliminary or detailed post-earthquake evaluations, it is recommended that screening be performed to determine if a building has likely experienced ground shaking of sufficient intensity to cause significant damage.
True
False
11.Prior to performing a detailed inspection and evaluation, available information on the building’s construction should be collected and reviewed.
True
False
12.Upon completion of a detailed evaluation, the responsible structural engineer should prepare a written evaluation report and submit it to the person requesting the evaluation, as well as any other parties required by law to receive such a report.
True
False
13.The primary material properties required to perform analytical evaluations of a steel moment-frame building include:
Yield strength, ultimate tensile strength and modulus of elasticity of steel for the columns in the moment frames
Yield strength, ultimate tensile strength and modulus of elasticity of steel for the beams in the moment frames
Ultimate tensile strength and notch toughness of the weld metal in the moment-resisting connections
Yield and ultimate tensile strength of bolts in the moment-resisting connections
All of the above
14.Field inspection should include visual inspection of all critical connections including moment-resisting beam-column connections and column splices, supplemented by nondestructive testing where visual inspection reveals the fracture-susceptible potential damage that cannot be quantified by visual means alone.
True
False
15.The actual strength of beam and column elements in a steel moment-frame structure is not important for the performance evaluation of such structures.
True
False
16.The basic process of post-earthquake evaluation, as contained in these procedures, is to develop a mathematical model of the damaged structure, and by performing structural analysis, to determine the likelihood that the building will resist ground shaking demands that can be anticipated to occur during the immediate post-earthquake period, without collapse.
True
False
17.What does LRFD stand for?
Load and Resistance Factor Design
Load Reaction and Factor Design
Load Reaction and Factor Demand
None of the above
18.The seismic forces at each floor level of the building shall be distributed according to the distribution of mass at that floor level.
True
False
19.The lateral seismic load on each flexible diaphragm shall be distributed along the span of that diaphragm, considering its displaced shape.
True
False
20.Accidental torsion is an artificial device used by the building codes to account for actual torsion that can occur, but is not apparent in an evaluation of the center of rigidity and center of mass in an elastic stiffness evaluation.
True
False