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AECT110 > Chapter 18 > Flashcards

Chapter 18 Flashcards

1
Q

Which of the following ferrous metals has the largest amount of carbon?

a. Steel
b. Wrought Iron
c. Cast Iron

A

Cast Iron

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2
Q

Which of the following ferrous metals is least corrosion resistant ?

a. Steel
b. Wrought Iron
c. Cast Iron

A

Cast Iron`

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3
Q

An integrated mill produces steel using what?

A

Iron ore

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4
Q

The mini-mill method of steel manufacturing predates the integrated-mill method. True or false?

A

False

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5
Q

An electric arc furnace uses what to melt steel scrap?

A

Three electrodes to melt steel scrap

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6
Q

What is a slag?

A

A waste product generated from the manufacture of steel.

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7
Q

When steel structures first appeared, they were called?

a. Skeleton Frame
b. Skeleton Cage
c. Steel Skeleton
d. All of the above.

A

D. All of the above

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8
Q

All structural steel sections are made by preheating billets or blooms and rolling them to shape. True or false?

A

True

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9
Q

Steel decks are made from cold-formed steel. True or false?

A

True

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10
Q

What steel type is most commonly used for framing members (columns and beams) of a building?

A

Steel type A992 with a yield strength of 50 ksi

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11
Q

A W-shape is so called because?

A

It is an I-section with wide flanges.

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12
Q

W-shape, S-shape, HP-shape, and M-shape are all structural steel I- sections. True or false?

A

True

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13
Q

Which steel shape is most commonly used for the structural framing of buildings?

A

W-shape

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14
Q

The designation W14 X 38 means what?

A

The nominal depth of the section is 14in. and its weight is 38lb/ft

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15
Q

To obtain the structural engineering properties of standard steel sections, which publication is generally used?

A

Steel Construction Manual

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16
Q

In a steel angle, both legs must have the same thickness but may be of different lengths. True or False?

A

True

17
Q

HSS members are made by what?

A

Bending and Welding heated steel plates.

18
Q

Which of the following does not represent a steel joist series?

a. H-series
b. J-series
c. K-series
d. LH-series
e. DLH- series

A

B. j-series

19
Q

In the steel joist designation 24LH10, the number 24 give what?

A

Depth of the joist in inches

20
Q

A K- series steel joist that is 20in. deep cannot be used to span more than how many feet?

A

40 feet

21
Q

Steel joists are braced against instability by

a. Horizontal bridging members at the bottom of the joists.
b. Horizontal bridging members at the top of the joists
c. A or B
d. A and B

A

A and B. Steel joists are braced against instability by horizontal bridging members at the bottom and the top of joists.

22
Q

Diagonal bridging may be used as an alternative to horizontal bridging to stabilize steel joists. True or False?

A

True

23
Q

Steel joists and girders are best utilized in a building that has concentrated loads. True or False?

A

False

24
Q

Steel ROOF decks are either form decks or composite decks. True or false?

A

False

25
Q

Steel floor decks are either form decks or composite decks. True or False?

A

True

26
Q

The thickness of sheet steel in a roof or floor deck is generally specified in terms of what?

A

Gauge number

27
Q

Which of the following decks requires structural concrete topping?

a. Form deck
b. Composite deck
c. Floor deck
d. All of the above

A

All of the above

28
Q

Roof decks are anchored to supporting members by continuous welds along the support lines. True or False?

A

True

29
Q

A pour stop is generally used with what?

A

Floor decks

30
Q

Two dissimilar metals are generally separated from each other by a separator, which helps to prevent what?

A

Galvanic corrosion

31
Q

Spray-on fire protection materials for steel contain what?

A

Portland cement with mineral fibers or lightweight aggregate

32
Q

Spray-on fire protection of steel gives a much cleaner appearance than gypsum board encasement of steel. True or False?

A

False

33
Q

Fire-protection of structural steel framing members in mandated by building codes for all buildings. True or False?

A

False

AECT110 (27 decks)

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