Chapter 9 Flashcards

1
Q

What is the top of the gabled rigid frame called

A

Crown

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2
Q

Which is a structural member that can carry loads across greater spans more economically than beams can

A

steel truss

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3
Q

What is the density of steel

A

490 pounds per cubic feet (7,840 kg/cubic m)

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4
Q

Which type of forces are slender shapes of steel limited to supporting

A

tension

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5
Q

What is the primary purpose of the gussets plate

A

Strengthen the connection

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6
Q

What is a greater likelihood due to the slenderness of steel column than a column constructed of another material

A

Buckling

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7
Q

Which type of floor system uses a lightweight concrete with a minimum thickness of 2 inches supported by corrugated steel decking

A

Open web joists

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8
Q

Which state,eat about steel is correct

A

Steels with higher yield points have less ductility

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9
Q

What is the carbon content of cast iron which makes it hard but brittle

A

3 to 4 percent

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10
Q

What is the density range of the cementitious materials

A

15 to 50 lb/cu ft

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11
Q

Which type of frame is designed to resist the bending forces resulting from the supported loads and lateral forces

A

Rigid

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12
Q

Which steel column cross section is similar to the cross section of an I beam

A

Wide flange shape

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13
Q

How is the slenderness ratio modified in evaluating a given design

A

Modifying the manner that the ends are attached to the rest of the strcture

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14
Q

What is the most common type of membrane ceiling used

A

Mineral tiles

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15
Q

Which of the following does not play a role in the possibility of bucking in an individual column

A

Method the column is supported along its length

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16
Q

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

A

Girder

17
Q

Which method of connection beams and columns in steel frame buildings is in use today

A

bolting

18
Q

What is most often the maximum slenderness ratio of a column used for structural support in a building

A

120

19
Q

What would the fire resistance of steel in older buildings which was encased in 3 inches of concrete with siliceous aggregate be

A

4 hours

20
Q

What are heavy steel trusses used to take the place of steel beams as part of the primary structural frame

A

Joist girders

21
Q

Where is the knee joint of a gabled rigid frame structure located

A

Roof and the wall

22
Q

Which of the following must be considered when determining the fire resistance rating of the ceiling

A

Floor and ceiling assembly

23
Q

Where do the rigid connections used in beam and girder type frame add more mass

A

at the connection

24
Q

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

A

Brace diagonally

25
Q

What is a large, horizontal structural member used to support joist at isolated points along their lengths

A

Girder

26
Q

What depth range of the steel joist can be seen fro the light gauge steel joist floor system

A

6 to 12 inches

27
Q

What density of mineral fiber materials would be suitable for use in parking facility

A

20lb/cu ft

28
Q

What temperature is steel heated to for the rolling process

A

2,200 degrees fahrenheit (1,200 Degrees Celsius)

29
Q

What type of joist are frequently used for the support of floors or roof decks

A

bar joists

30
Q

How does cast iron ten to fail

A

Fracturing

31
Q

How many time its original column will the intumescent coating expand when exposed to fire conditions

A

15 to 30 times

32
Q

Approximately was percentage of entrapped water is contained in gypsum

A

21 percent

33
Q

What is the steel truss used in three dimensional space frames know as

A

Delta truss

34
Q

In which type of frame are the connections designed primarily to support a vertical force

A

simple

35
Q

Which of the following materials is the strongest of the building materials

A

Steel

36
Q

What happens to steel as it is heated

A

expands