Meterials and Methods Exam 2

What is light gauge steel framing primarily used for in construction?

Load-bearing and non-load bearing walls

What process revolutionized the steel industry by enabling the mass production of high-quality steel at a lower cost?

Bessemer Process

These type of bolts are typically used as a temporary means of steel installation. These are also used in light framing scenarios:

Correct answer:

Carbon Steel Bolts

In this type of bolting method, the end of the bolts physically breaks off when the bolt is fully tensioned:

Tension-Control Bolts

What distinguishes ferrous metals based on their carbon content?

Their carbon content predominantly determines their mechanical properties, such as strength and hardness

What is the primary purpose of cold worked steel in construction?

To increase the strength and hardness of steel components

When performing a weld, air needs to be kept out of the weld to keep from rapid oxidation. This is mostly commonly resolved by:

Gaseous Shield

When connecting a beam to the web of a column, what is the reason the shear plate connecting bolts would be outside the flange of the column?

Ease of access

In class it was discussed that the US Steel headquarters building used a unique method for fireproofing their steel. What was that method?

Water Filled Columns

What type of weld is commonly utilized for attaching steel decking to structural steel members in construction?

Puddle Welds

Which of the following factors can affect the design of light gauge steel framing for wind loads?

Building orientation

What is true about castellated beams?

Castellated beams increase the structural efficiency because the depth of the beam is increased by 1.5 times without increasing the weight

Which of the following is the "biggest" advantage of light gauge steel framing over wood framing?

Non-combustibility

When discussing the ways to stabilize a building horizontally from lateral forces, i.e wind, the method that uses solid walls of concrete, or concrete masonry is called:

Shear Walls

What CSI specification governs the standard for load-bearing light gauge steel framing members?

05 40 00

When making column splices on multi-story buildings, where is the splice usually made?

Waist Height Above the Floor

With this type of bolted connection, the bolt uses the shear stress of the adjacent steel to allow for slipage to meet bear against the body of the bolt:

Bearing-Type

During the process of converting iron ore into steel, what materials are added together in a blast furnace to create elemental iron?

Coke and Limestone

In light gauge framing, what does the term "deflection track" refer to?

A flexible track designed to accommodate building movements in non-load bearing scenarios

How does weathering steel differ from conventional carbon steel in construction?

Its unique composition allows it to develop a protective layer of rust, which eliminates the need for painting and provides enhanced corrosion resistance over time

In light gauge steel framing, what is the purpose of a "bridging" member?

To increase structural stiffness and prevent stud rotation

Before steel goes through the rolling mills, the steel is fabricated into standard shapes that are typically thick approximations of their final shape. What is the steel called at this step?

Beam Blanks

What characteristic distinguishes high strength, low alloy steels (ASTM A992 & A572) in construction?

Their high tensile strength while maintaining good weldability and ductility

What design consideration is important when using light gauge steel framing?

Structural Calculations

What is the typical spacing of steel studs in light gauge steel framing for exterior walls?

Correct answer:

16 inches on center

Which of the following is a key advantage of using cold-formed steel in light gauge steel framing?

Noncombustible and Immune to Insect Attacks

During the manufacturing of steel, a mini-mill mostly uses scrap steel from what product:

Correct answer:

Cars

Explain the designation:

W21x68

Wide-Flange Beam 21" depth x 68 pounds per foot

What is the most common method of connecting members in light gauge steel framing?

Screws

What is the term used to describe the process of coating steel studs with a layer of zinc to protect against corrosion?

Galvanization

What role does the "track" play in light gauge framing construction?

It serves as a top or bottom horizontal member to which studs are attached

The type of steel includes the addition of nickel and chromium:

Stainless Steel

Which area of construction is light gauge steel framing commonly used for?

Residential and commercial buildings

What material does the ironworker typically use during steel erection to temporarily hold the steel in-place until bolts can be installed?

Drift Pins

When a beam connection needs to be made to a girder, and the top side of the steel members need to be the same height, what is it called when the flange of the beam is cut?

Coped Beam

As discussed in class, composite decking does what for the floor system? Select the most correct answer.

Makes the strength of the concrete and decking stronger together than they are apart

What is the main difference between cast iron and wrought iron:

Correct answer:

Carbon percentage

Which of the following is NOT a benefit of light gauge steel framing?

High thermal conductivity

Which governing body provides standards and guidelines for the material used in light gauge steel framing?

American Society for Testing and Materials (ASTM)

What structural steel member did the Wide Flange Beam replace because it is much more structural efficient? Also known as the I-beam.

American Standard Beam

In light gauge framing design, what is the purpose of bracing elements such as diagonal struts or cross bracing?

To resist lateral wind and seismic loads

In light gauge steel framing, what is the typical gauge range for steel studs used for non-loadbearing walls?

16 or 18 gauge

To confirm a bolt is tensioned properly, this method provides for an easy visual inspection because the washer displays a liquid when fully tightened:

Load Indicator Washer

What would be a typical designation for a C-Stud member that is 6" deep, that is 3.625", and is 68 mils?

600S362-68

What light gauge steel framing member accessory is typically added to joist members to strengthen the member at locations where there is a heightened load?

Correct answer:

Web Stiffener

When discussing the role of the fabricator, it was discussed that the fabricator does what:

Shares responsibility for the design of the steel connections

When discussing the types of tensioning methods used for bolts - what type is used when a bolt is tightened snug, then turned an additional fraction of a turn?

Turn-of-Nut Method

When using brace framing in high seismic areas, a special type of brace framing is used. What is it called?

Eccentrically Braced Frame

What material is welded to the steel beam through the metal decking that allows for the decking, and concrete to act as a composite floor system?

Correct answer:

Shear Stud

As discussed in class, what structure was built completely out of wrought iron?

Correct answer:

Eiffel Tower