Midterm - Steel Flashcards
Which of the following values is a typical number for the Modulus of Elasticity?
1,300,000
What are the leadership skills needed to conduct a productive meeting?
Listening attentively, Responding, Constructively, Soliciting All Ideas, And Matching Decision Making to the Situation.
Which materials are incorporated by reference and not normally shown on the plans of in the Technical Specification?
Bar Supports
How is the Fireproofing of a steel structure determined?
Occupancy
If the weld is supposed to be on all four sides, what symbol will be used?
Circle
What is the stress term called that has the narrow dimension carrying the load withe the fibers at the top in compression and the bottom fibers are in tension?
Extreme Fiber Bending (F)
Most structures consist of both structural steel and reinforced concrete?
True
Reinforced concrete in that the steel reinforcement is used to provide steel’s_______ strength capacity to a structural concrete member.
Tensile
Assume you have a steal beam that is 20 feel long and carries a concentrated load of 500 pounds at a distance of 15 feet from reaction (R). Reaction (R) is pinned 5 feet from the load. What are the values in lbs for R and R?
375 and 125
(50015)/20 =375
(5005)/20=125
What is not the commonly controlling element for material selection before a final decision is made? Choose all that apply.
Appearance
Fire resistance
Joist series are the K series, the LH Series, the DLH Series and the Joist Girders. The LH is fabricated in depths that range from 18 inches thru 48 inches and spans up to?
96 feet.
For a steel shape designation of S 14x90, the capital letter S tells you that the shape is a?
Standard I section
Which document describes the Suggested Agenda for the Preconstruction Meeting?
General Requirements
What is the term for a material that deforms slowly when a force is applied to it for an extended period of years, even thought the force is too small to cause failure in a short period of time?
Creep
Having high strength, stiffness, toughness, and ductile properties, structural steel is one of the most commonly used materials in commercial and industrial building construction.
True
Each beam is lowered into place, and a worker lines it up correctly with a drift pins. At least _____ bolts are attached before the cranes releases the load/
Two
For safer bolted connections, we should consider? (choose all that apply)
Self-supporting connections and Double connections
Erection aid: “dummy holes”
Bot sizes and Minimum number of bolts
Awkward or dangerous connection locations.
For safer welded connections (choose all that apply)`
Avoid awkward or dangerous connection locations
Immediate stability
Welding location and Welding material
Specify shop welding rather than field welding
For walking safety, use beams with a minimum beam width of
6 inches
Site preparation/practice. The key parameter when planning for erections is the piece count and weight average.
True
Floor capacity designed as 100 lb/ft^2, than means?
The allowed load is 100 lb per square feet
Which typical connections are not used for steel structure? (choose all apply)
Embed rebar
Nailed together
What does the steel designation C 12x 20.7 mean?
C is the steel shape. 12 is the nominal depth and 20.7 is the pounds per foot.
Please mark any dead load of list below. (choose all apply)
Self- weight
Static equipment
What term is a measure of its ability to cause turning, rotation of twisting about an axis of rotation?
Moment
What is the term where the force tends to cause a member to fail by cutting perpendicular to he beam’s longitudinal axis at or near the beams supports?
Vertical Shear
Water density as 1 Te/M^3 and a rectangular box located 100 m below sea surface, top plate is 1 m width with 3m length for this box. How much water pressure load applied on the top plate?
300 Te
What are the drawings called that are issued to the contractor from the Manufacturer indicating the location and proper positioning of each piece of steel within the structure?
Erection Drawings
Assume you have a beam that is 16 ft long and carries a concentrated load of 900 lbs at a distance of 4 ft from the R. Reaction (R) is pinned 12 ft from the load.
Reaction R= 225 lbs and R = 675. What is the maximum shear in lbs?
675
What structural steel component is the steel designation “VL” referring to?
Metal Decking
What structural steel component is the steel designation “LH” referring to?
Open-web joist
Which organization publishes structural steel design properties manuals and manuals that cover steel construction methods?
American Institute of Steel Construction
Which of the following is structural steel most susceptible to for failure?
Fire
What is sprayed onto structural steel to increase its fire resistance capability?
Mineral Wool
What type of weld fits two pieces of metal together end-to-end for welding?
Butt
Which of the following documents is utilized for correspondence between the A/E or Owner and the Contractor?
Formal Business Letter
Picture right below, is this connection. Capable to take:
Tension
Shear
Compression
Which one is live loads for your building design?
Wind
People
Assume you have a square weld symbol with a solid flag on a pole coming up from the change in direction of the arrow. What does the solid backwards flag on a pole tell you?
Field weld
The amount of tensile stress that a material can resist before failing.
Tensile Strength
The ability of a material to be subjected to large strains before it ruptures or fails.
Ductile
The elongation or concentration of a material per unit length of the material.
Strain
Indicated the stiffness of a material.
Modulus of Elasticity
The amount of compressive stress that a material can resist before failing.
Compressive strength
The ability of a material to show little of no yielding before failure.
Brittle
Applied load divided by the material area it is acting on.
Stress
Iron that is refined to contain virtually no impurities.
Steel
A combination of cement and aggregate into one solid mass.
Concrete
A concrete member with steel embedded inside it to resist tensile forces.
Reinforced Concrete
