What is the primary purpose of a steel beam in a structure?
A Connect members
B Transfer loads
C Support columns
D Prevent buckling
Steel beams are used to transfer loads from the structure above to the supporting columns. They are critical for distributing forces and maintaining structural integrity in buildings and bridges.
What is the main function of a steel truss?
A Distribute loads
B Resists tension
C Resists compression
D Prevent vibrations
Steel trusses are designed to distribute loads efficiently across a large span. They combine tension and compression members to maintain stability, making them ideal for roof and bridge structures.
Which type of connection is commonly used in steel construction for easy assembly and disassembly?
A Welded
B Screwed
C Bolted
D Riveted
Bolted connections are commonly used because they allow easy assembly and disassembly. They are strong, reliable, and facilitate construction and maintenance of large steel structures.
Which of the following is a common steel section used for columns?
A C-section
B H-section
C T-section
D I-section
H-sections, also known as wide flange beams, are commonly used for columns due to their high strength and efficiency in carrying loads while maintaining a low weight.
What type of stress do compression members primarily resist?
A Shear stress
B Tensile stress
C Bending stress
D Compressive stress
Compression members, such as columns, are primarily designed to resist compressive stress. They transfer vertical loads and are crucial for the stability of structures like buildings and bridges.
What is a common method to prevent corrosion of steel structures?
A Insulating
B Painting
C Galvanizing
D Coating with zinc
Galvanizing involves coating steel with zinc to prevent corrosion. The zinc acts as a protective barrier, helping steel structures withstand the effects of weather and environmental exposure.
What is the primary purpose of a gusset plate in steel structures?
A Strengthen connections
B Prevent buckling
C Distribute loads
D Support beams
Gusset plates are used to strengthen connections between steel members, ensuring load transfer and preventing structural instability. They are commonly used in trusses and frames to enhance the joint’s strength.
Which of the following is a property of structural steel?
A Low ductility
B High strength-to-weight ratio
C Low strength
D High flexibility
Structural steel has a high strength-to-weight ratio, making it ideal for large structures. This allows engineers to design strong, efficient buildings and bridges without excessive weight.
What type of joint is commonly used for joining steel plates in heavy-duty construction?
A Welded
B Bolted
C Riveted
D Screwed
Welded joints are commonly used for heavy-duty steel structures, as they provide a permanent, strong bond that can resist high stresses. Welding creates continuous connections for maximum strength.
What is the main reason for using prestressed steel in construction?
A Reduce weight
B Reduce costs
C Increase strength
D Improve ductility
Prestressed steel is used to increase the strength of structures by introducing internal stresses that counteract external loads. This technique enhances the performance of beams, slabs, and bridges under heavy loads.
What type of load does a steel frame resist?
A Seismic forces
B Vertical loads
C Dead and live load
D All of the above
Steel frames are designed to resist various loads, including vertical loads (from gravity), lateral loads (from wind or earthquakes), and seismic forces, ensuring the stability and safety of buildings and bridges.
Which of the following is used to resist torsion in steel members?
A Stiffeners
B Diagonal supports
C Cross bracing
D Angle sections
Stiffeners are used in steel members, such as beams and girders, to resist torsional forces. They provide extra support and prevent twisting or warping under high loads or stresses.
What is the typical use of a plate girder in construction?
A Decorative element
B Column reinforcement
C Span long distances
D Roof support
Plate girders are used in construction to span long distances while supporting heavy loads. They are essential in bridges, large buildings, and other structures where long spans are required.
What is the role of tension members in a truss?
A Prevent torsion
B Carry axial loads
C Distribute forces
D Resist compression
Tension members in a truss are designed to carry axial loads. These members are stretched or pulled to maintain the stability of the structure and are vital for load transfer across the truss.
Which steel section is typically used for beams in bridges?
A Box section
B H-section
C C-section
D I-section
I-sections are commonly used for beams in bridges due to their ability to handle bending moments efficiently. The shape of the I-beam allows for maximum strength while minimizing weight.