Chapter 18 Flashcards
Which of the following ferrous metals has the largest amount of carbon?
a. Steel
b. Wrought Iron
c. Cast Iron
Cast Iron
Which of the following ferrous metals is least corrosion resistant ?
a. Steel
b. Wrought Iron
c. Cast Iron
Cast Iron`
An integrated mill produces steel using what?
Iron ore
The mini-mill method of steel manufacturing predates the integrated-mill method. True or false?
False
An electric arc furnace uses what to melt steel scrap?
Three electrodes to melt steel scrap
What is a slag?
A waste product generated from the manufacture of steel.
When steel structures first appeared, they were called?
a. Skeleton Frame
b. Skeleton Cage
c. Steel Skeleton
d. All of the above.
D. All of the above
All structural steel sections are made by preheating billets or blooms and rolling them to shape. True or false?
True
Steel decks are made from cold-formed steel. True or false?
True
What steel type is most commonly used for framing members (columns and beams) of a building?
Steel type A992 with a yield strength of 50 ksi
A W-shape is so called because?
It is an I-section with wide flanges.
W-shape, S-shape, HP-shape, and M-shape are all structural steel I- sections. True or false?
True
Which steel shape is most commonly used for the structural framing of buildings?
W-shape
The designation W14 X 38 means what?
The nominal depth of the section is 14in. and its weight is 38lb/ft
To obtain the structural engineering properties of standard steel sections, which publication is generally used?
Steel Construction Manual
In a steel angle, both legs must have the same thickness but may be of different lengths. True or False?
True
HSS members are made by what?
Bending and Welding heated steel plates.
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
B. j-series
In the steel joist designation 24LH10, the number 24 give what?
Depth of the joist in inches
A K- series steel joist that is 20in. deep cannot be used to span more than how many feet?
40 feet
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 and B. Steel joists are braced against instability by horizontal bridging members at the bottom and the top of joists.
Diagonal bridging may be used as an alternative to horizontal bridging to stabilize steel joists. True or False?
True
Steel joists and girders are best utilized in a building that has concentrated loads. True or False?
False
Steel ROOF decks are either form decks or composite decks. True or false?
False
Steel floor decks are either form decks or composite decks. True or False?
True
The thickness of sheet steel in a roof or floor deck is generally specified in terms of what?
Gauge number
Which of the following decks requires structural concrete topping?
a. Form deck
b. Composite deck
c. Floor deck
d. All of the above
All of the above
Roof decks are anchored to supporting members by continuous welds along the support lines. True or False?
True
A pour stop is generally used with what?
Floor decks
Two dissimilar metals are generally separated from each other by a separator, which helps to prevent what?
Galvanic corrosion
Spray-on fire protection materials for steel contain what?
Portland cement with mineral fibers or lightweight aggregate
Spray-on fire protection of steel gives a much cleaner appearance than gypsum board encasement of steel. True or False?
False
Fire-protection of structural steel framing members in mandated by building codes for all buildings. True or False?
False
