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Building Construction > Ch 2 Building classifications > Flashcards

Ch 2 Building classifications Flashcards

1
Q

Type I Construction

A

Fire Resistive

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2
Q

Type II Construction

A

Noncombustible
or
protected noncombustible

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3
Q

Type III Construction

A

Exterior Protected (Masonry)

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4
Q

Type IV Construction

A

Heavy Timber

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5
Q

Type V Construction

A

Wood Frame (ordinary)

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6
Q

NFPA classifications and Sub classifications have how many digit numerical code

A

3 digit numerical code

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7
Q

What does first digit in NFPA classifications mean?

A

First Digit:
exterior bearing walls resistance in hours

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8
Q

What’s NFPA classifications second digit mean?

A

Structural frames / Columns and girders that support more than one floor

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9
Q

What’s NFPA third digit mean

A

Floor construction resistance

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10
Q

What’s does Fire Resistive Mean?

A

Non protected but will hold up for a specified range.

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11
Q

How long is floor construction expected to resist fire ?

A

2-3 hours

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12
Q

How long is roof deck and roof supports supposed to resist fire spread?

A

1-2 hours

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13
Q

How long are bearing walls, Columns and Beams expected to resist fire spread?

A

2-4 hours

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14
Q

What’s the most common form of Noncombustible materials in Type 1 construction?

A

Protected steel frame or reinforced concrete

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15
Q

What construction material is virtually non combustible?

A

Concrete

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16
Q

Type II-A (protected) Construction requires structural components to have what kind of fire restrictions in hours.

A

1 hour

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17
Q

Type II-B (unprotected) structural components have what type of resistance in hours?

A

No fire Resistance, unprotected, noncombustible building can not be expected to provide support during fire conditions

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18
Q

The speed at which unprotected members will fail depends on what?

A

Ceiling height
Size of unprotected members
Intensity and duration of fire

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19
Q

What type of construction is called Ordinary?

A

Type III

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20
Q

What are the exterior walls of Type III construction constructed?

A

Masonry

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21
Q

Type III has two classifications with NFPA and IBC, what is NFPA 2-1 / IBC III A means?

A

Construction protected by plaster or gypsum

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22
Q

Type III has two classifications with NFPA and IBC, what is NFPA 2-0/ IBC III B means?

A

Unprotected steel is sometimes used to support combustible members

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23
Q

Type III construction commonly uses what size joists for floor construction?

A

Nominal 2 inch by 10 Inch joists for floor construction

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24
Q

What’s the fundamental concern with Type III construction?

A

Combustible concealed spaces between floors/ceilings and partitions when covered with interior finished materials

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25
Q

What’s do concealed spaces in type III construction require

A

Fire stops

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26
Q

What’s is also known as heavy timber or Mill Construction

27
Q

What’s similarities does type IV have with Type III construction

A

Exterior walls are masonry and interior components are combustible

28
Q

What are the distinctions between type III and Type IV construction?

A

Type IV beams/Columns/ floors/ roofs are solid or laminated with greater dimensions than Type III

Concealed spaces no permitted in type IV

29
Q

What subdivisions does type IV construction use instead of A and B ?

30
Q

Heavy timber construction also known at Type IV have minimum dimensions greater than what other types of construction

A

Type III and Type V

31
Q

Heavy timber Construction (Type IV) construction requires what minimal nominal dimensions for lumber for floor construction?

A

Minimum nominal dimensions of 6 x 10 for floor construction

32
Q

What’s the primary hazard of type IV construction?

A

The large amount of fuel in structural supports

33
Q

What construction is also called wood frame or ordinary?

34
Q

What construction type allows all major structural components to be made of combustible material?

A

Type V wood frame

35
Q

What fire resistance is Type V construction suppose for have for structural components in terms of hours?

A

1 hr fire resistance for structural components

36
Q

How does type V construction add fire resistance to its construction?

A

Fire rated plaster or gypsum are used to protect combustible members

37
Q

What’s the fundamental problem of Type V construction?

A

Concealed Void spaces

38
Q

When does mixed construction occur

A

New structures are built onto existing structures of a different construction type

39
Q

Building Construction and Occupancy classifications are used together in Building code to what?

A

Establish limitations on permissible heights and open areas of buildings.

40
Q

Who maintains code requirements for Occupancies?

A

IBC and NFPA

41
Q

How many Occupancy classes does IBC have

42
Q

How many sub groups does the IBC 10 occupancy classification have?

A

26 sub groups

43
Q

In IBC, buildings classified as R, address what type of dwellings

A

One to two family dwellings not more than three stories high

44
Q

The IBC R rating for family dwellings is governed by what separate code?

A

International Residential Code (IRC)

45
Q

NFPA occupancy classifications has how many major classifications?

46
Q

What’s does Group U mean in IBC occupancy classifications

A

Utility and Miscellaneous

47
Q

Specific requirements for occupancy separation depends on what ?

A

Local Building Code

48
Q

Building code may reduce the required occupancy separation if the building has what?

A

Sprinklers

49
Q

What is Fire Load

A

Max amount of heat that can be released if all fuel is consumed.

50
Q

The fuel contributes to what other load?

A

The fuel load contributes to the Fire load

51
Q

What is Fuel Load

A

Total quantity of combustibles in a compartment

52
Q

The fire load will vary depending on what?

A

Heat of combustion

53
Q

Heat of combustion

A

Total amount of thermal energy that can be generated

54
Q

How is fire load expressed?

A

Pounds per square feet

55
Q

What can be used to estimate the total amount of heat release

A

The fire load can be used to estimate the total amount of heat release

56
Q

What’s the most common test to determine combustility

A

ASTM E 136

57
Q

Name of the Test method for behavior of materials in a vertical tube furnace at 750 Celsius

A

ASTM E -136

58
Q

The severity of fire is a factors of ?

A

The severity of fire is a factor of Fire load, and the rate that it burns.

Another factor is availability oxygen

59
Q

HHR mean

A

Heat Release Rate

60
Q

Properties of fire resistance

A

Combustibilities
Thermal conductivity
Composition
Density
Dimensions

61
Q

Fire resistance indicates the ability of a structural assembly to?

A

Maintain it’s load bearing capacity and structural integrity during fire conditions

62
Q

The fire resistive rating can be evaluated how?

A

Quantitatively, expressed in terms of time

63
Q

Most common test to determine fire resistance

A

ASTM E 119, fire endurance test

Building Construction (3 decks)

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