Deck 19: Structural Steel Construction

Question 1

Camber refers to

A)upward deflection of a beam to counter downward deflection by a dead load plus a live load.
B)downward deflection of a beam.
C)upward deflection of a beam to counter downward deflection by a live load.
D)upward deflection of a beam to counter downward deflection by a dead load.
E)none of the above.

Answer 1

D

Question 2

If the floor of a steel- frame building has only primary and secondary components, the secondary components consist of

A)steel joists.
B)floor deck.
C)joist girders.
D)W- section beams.
E)none of the above.

Answer 2

B

Question 3

The preliminary framing layout of a building is generally prepared by the

A)steel fabricator.
B)project's structural engineer.
C)general contractor.
D)project architect.
E)none of the above.

Answer 3

D

Question 4

The erection of structural steel members is generally done by the

A)steel detailer.
B)structural engineer.
C)general contractor.
D)American Institute of Steel Construction.
E)none of the above.

Question 5

In a column splice detail, a butt plate is required when

A)the upper- story column is much larger in height than the lower- story column.
B)the upper- story column is the same height as the lower- story column.
C)the upper- story column has the same cross- sectional dimensions as the lower- story column.
D)the upper- story column is much smaller in height than the lower- story column.
E)none of the above.

Question 6

Which of the following is not an ASTM designation for steel bolts?

A)A507 bolts
B)A490 bolts
C)A325 bolts
D)A307 bolts

Question 7

The fabrication of structural steel components is done based on

A)structural construction drawings.
B)architectural construction drawings.
C)both A and B.
D)shop drawings.
E)none of the above.

Question 8

In a multistory steel- frame building, the columns are generally spliced

A)every two floors.
B)every floor.
C)every three floors.
D)every four floors.
E)none of the above.

Question 9

A shear connection between a steel beam and a steel column can be made without connecting beam flanges to the column.

Question 10

Field bolting of steel members is generally preferred over field welding.

Question 11

The preliminary framing layout of a steel- frame building is generally presented in

A)plan view.
B)elevation view.
C)three- dimensional view.
D)all of the above.
E)none of the above.

Question 12

A slip- critical connection between framing members is obtained by

A)welding the members together using gas welding.
B)bolting the members and tightening them with a spud wrench.
C)bolting the members and tightening them with a spud wrench using full force.
D)welding the members together using arc welding.
E)none of the above.

Question 13

A shear connection between a steel beam and a steel column is also called

A)a rigid connection.
B)a simple connection.
C)a semirigid connection.
D)an AISC Type I connection.
E)none of the above.

Question 14

If the floor of a steel- frame building has primary, secondary, and tertiary components, the tertiary components consist of

A)joist girders.
B)W- section beams.
C)steel joists.
D)any one of the above.
E)none of the above.

Question 15

In connecting the upper- column shaft with a lower- column shaft in a multistory steel- frame building, we generally require

A)one flange plate.
B)four flange plates.
C)three flange plates.
D)two flange plates.

Question 16

The installation of a floor or roof deck is done by

A)the erector.
B)the general contractor.
C)the manufacturer of the deck.
D)A, B, or C.
E)A or B.

Question 17

If the floor of a steel- frame building has primary, secondary, and tertiary components, the secondary components consist of

A)W- shape beams.
B)steel joists.
C)steel joist girders.
D)any one of the above.
E)A or B.

Question 18

A rigid connection between a steel beam and a steel column can be made without connecting beam flanges to the column.

Question 19

A snug- tight connection between framing members is obtained by

A)welding the members together using gas welding.
B)welding the members together using arc welding.
C)bolting the members and tightening them with a spud wrench using full force.
D)bolting the members and tightening them with a spud wrench.
E)none of the above.

Question 20

Details of connections between structural steel members are prepared by the

A)architect.
B)structural engineer.
C)both A and B.
D)general contractor.
E)none of the above.

Question 21

What is the difference between a primary beam and a secondary beam in a steel frame structure?

Question 22

To level a column so that it is plumb,

A)leveling bolts are used.
B)high- strength plastic shims are used.
C)steel shims are used.
D)any one of the above.
E)none of the above.

Question 23

Steel frame members are connected together either through welding or bolting. The connections may be accomplished either at the site or in the fabricator's shop. Which method is preferred for site- made connections and why?

Question 24

A multistory steel- frame structure must be provided with a central shear core.

Question 25

The term racking refers to the effect produced on the structure mainly by

A)roof live load.
B)floor live loads.
C)dead loads.
D)lateral loads.
E)none of the above.

Question 26

In connecting a steel column to concrete foundations, anchor bolts are used. These bolts are embedded into the foundation by

A)a specialized bolt- embedding outfit.
B)the erector.
C)the general contractor.
D)the fabricator.
E)none of the above.

Question 27

Which steel sections are commonly used for columns and which for beams?

Question 28

Which components of a steel frame structure are used to resist the lateral loads?

Question 29

Eccentric K- bracing is generally recommended for use

A)because it increases frame stability more than other forms of bracing.
B)because it is more economical than other forms of bracing.
C)in seismic regions.
D)in hurricane- prone regions.
E)all of the above.

Question 30

In steel construction, the structural steel members are brought to the construction site in precut lengths and connected together at the site according to the detail drawings. Who prepares the details of connections between the components?

Question 31

The difference between diagonal bracing and K- bracing between steel columns is that

A)K- bracing members also carry some gravity loads, while diagonal framing members do not.
B)K- bracing members are heavier than diagonal bracing members.
C)K- bracing provides less spatial interruption than diagonal bracing.
D)all of the above.
E)none of the above.

Question 32

Which of the two-a rigid frame or a braced frame-provides greater structural stiffness, that is, greater lateral stability?

A)Rigid frame
B)Braced frame

Question 33

What is a framing layout?

Question 34

The floor of a steel frame building consists of primary beams and secondary beams. Which of these two members directly support the deck?

Question 35

A braced- frame steel structure is generally more economical than a comparable rigid- frame structure.

Question 36

Are steel detailers generally independent professionals like most structural engineers?

Question 37

The central shear core in a steel- frame building

A)should consist of steel- braced frames along both directions of the building.
B)should consist of reinforced concrete walls in both directions of the building.
C)either A or B.
D)should consist of reinforced concrete walls in one direction of the building and steel- braced frames in the other direction.

Question 38

In a braced- frame steel structure, the braced bays

A)may be provided on the exterior facade or the interior of the building.
B)may be provided on the exterior facade, the interior of the building, or both.
C)should be provided only on the exterior facade of the building.
D)should be provided on both the exterior facade and the interior of the building.
E)should be provided only in the interior of the building.

Question 39

A steel column may or may not need a base plate at the bottom.

Question 40

A steel- frame building may consist of either a rigid frame or a braced frame. A combination of the two systems (braced- and rigid- frame systems)cannot be used in the same building.

Question 41

The column- to- beam connection can either be a shear connection or a moment connection. Which of these two connections is used in a rigid frame?

Question 42

Explain what the term framing plan means. What information does a framing plan include?

Question 43

Is fabrication of steel components and their erection at site performed by the same contractor or different subcontractors?

Question 44

Explain the pros and cons of welding versus bolting in steel structures.

Question 45

Explain the roles of the general contractor, fabricator, and erector of a structural steel building.

Question 46

The column- to- beam connection can either be a shear connection or a moment connection. Which of these two connections is used in a braced frame?

Question 47

Each steel column is provided with a base plate. Is the base plate bolted or welded to the column and where-at the site or in fabricator's shop?

Question 48

Steel frame members are connected together through welding or bolting. The connections may be accomplished at the site or in the fabricator's shop. Which method is preferred for shop- made connections and why?

Question 49

With the help of sketches and notes, explain the difference between a simple connection and a rigid connection between a wide- flange column and a wide- flange beam.

Question 50

The connections in a steel- frame structure consist of: (i)column- to- beam connection, (ii)beam- to- beam connection, and (iii)column- to- column connection. Which of the three connections requires the use of long splice plates?

Question 51

In a typical structural steel floor or roof framing, there are three types of elements, called primary, secondary, and tertiary elements. Explain what these are and what material(s)they consist of.

Question 52

Using sketches and notes, explain how the joists and joist girders are stabilized against overturning.

Question 53

What is camber? In which structural members is it provided and why?

Question 54

Is AISC Type II connection a shear connection or a moment connection?

Question 55

With the help of sketches and notes, explain the connection of a column of an upper floor with that of a lower floor.