Chapter 9 Flashcards
What is the top of the gabled rigid frame called
Crown
Which is a structural member that can carry loads across greater spans more economically than beams can
steel truss
What is the density of steel
490 pounds per cubic feet (7,840 kg/cubic m)
Which type of forces are slender shapes of steel limited to supporting
tension
What is the primary purpose of the gussets plate
Strengthen the connection
What is a greater likelihood due to the slenderness of steel column than a column constructed of another material
Buckling
Which type of floor system uses a lightweight concrete with a minimum thickness of 2 inches supported by corrugated steel decking
Open web joists
Which state,eat about steel is correct
Steels with higher yield points have less ductility
What is the carbon content of cast iron which makes it hard but brittle
3 to 4 percent
What is the density range of the cementitious materials
15 to 50 lb/cu ft
Which type of frame is designed to resist the bending forces resulting from the supported loads and lateral forces
Rigid
Which steel column cross section is similar to the cross section of an I beam
Wide flange shape
How is the slenderness ratio modified in evaluating a given design
Modifying the manner that the ends are attached to the rest of the strcture
What is the most common type of membrane ceiling used
Mineral tiles
Which of the following does not play a role in the possibility of bucking in an individual column
Method the column is supported along its length
Which is constructed as a solid arch that many be built up from angles and webs with a cross section similar to that of a beam
Girder
Which method of connection beams and columns in steel frame buildings is in use today
bolting
What is most often the maximum slenderness ratio of a column used for structural support in a building
120
What would the fire resistance of steel in older buildings which was encased in 3 inches of concrete with siliceous aggregate be
4 hours
What are heavy steel trusses used to take the place of steel beams as part of the primary structural frame
Joist girders
Where is the knee joint of a gabled rigid frame structure located
Roof and the wall
Which of the following must be considered when determining the fire resistance rating of the ceiling
Floor and ceiling assembly
Where do the rigid connections used in beam and girder type frame add more mass
at the connection
What must be done for the gable roof rigid frame structure to prevent deflections in the direction of perpendicular to the plane of the frame sections
Brace diagonally
What is a large, horizontal structural member used to support joist at isolated points along their lengths
Girder
What depth range of the steel joist can be seen fro the light gauge steel joist floor system
6 to 12 inches
What density of mineral fiber materials would be suitable for use in parking facility
20lb/cu ft
What temperature is steel heated to for the rolling process
2,200 degrees fahrenheit (1,200 Degrees Celsius)
What type of joist are frequently used for the support of floors or roof decks
bar joists
How does cast iron ten to fail
Fracturing
How many time its original column will the intumescent coating expand when exposed to fire conditions
15 to 30 times
Approximately was percentage of entrapped water is contained in gypsum
21 percent
What is the steel truss used in three dimensional space frames know as
Delta truss
In which type of frame are the connections designed primarily to support a vertical force
simple
Which of the following materials is the strongest of the building materials
Steel
What happens to steel as it is heated
expands
