Lesson 1 - Steel Buildings and Design Criteria

Question 1

a condition beyond which a structural system or a member becomes unfit for service and is judges to be no longer useful for its intended function or to be unsafe

Answer 1

Limit State

Question 2

Strength limit state

Answer 2

1 Flexure
2 Shear
3 Torsion

Question 3

Serviceability limit state

Answer 3

1 Cracking
2 Excessive Deflection

Question 4

accounts for both variability and resistance. it achieves fairly uniform levels of safety for different limit states

Answer 4

LRFD (Load and Resistand Factor Design)

Question 5

Philosophy of Design

Answer 5

1 Safety
2 Serviceability
3 Economy

Question 6

Ensuring that the structure can withstand all expected loads and environmental conditions without failure

Answer 6

safety

Question 7

designing for user comfort and minimizing deflections, vibrations, and other factors affecting occupant satisfaction

Answer 7

serviceability

Question 8

optimizing material usage and construction costs with compromising safety or functionality

Answer 8

economy

Question 9

factors to be considered in the design of steel structures

Answer 9

1 adaptation to site
2 structural scheme
3 structural analysis
4 proportionality of members
5 factor of safety

Question 10

factors of safety

Answer 10

1 material factor
2 load factor
3 resistance factor

Question 11

accounts for variability in material properties and is applied to the yield strength of the steel

Answer 11

material factor

Question 12

accounts for uncertainties in applied loads, including dead loads, live loads, wind loads, and seismic loads

Answer 12

load factor

Question 13

accounts for uncertainties in the prediction of structural resistance, including uncertainties in analysis and design calculations

Answer 13

resistance factor