Building Construction 11 Fire Resistant Flashcards

1
Q

Two types of concrete construction

A

Cast in Place

Precast

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2
Q

Cast in place and precast concrete construction differences in tension

A

Cast in Place post tension and precast pretension

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3
Q

Re: concrete what is casting

A

Concrete poured into molds

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4
Q

Regarding concrete what are chairs

A

Keeps rods off form surface for concrete to flow

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5
Q

What is spalling

A

Lots of surface material when subjected to heat

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6
Q

Concrete is strong in what and weak in what

A

Strong compression

Week sheer

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7
Q

Regarding concrete tensile strength

A

None

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8
Q

When a concrete beam is loaded what does it do to the load

A

Deflects

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9
Q

Concrete continuous beam supported more than two points where is tension

A

Top of the beam over columns

Bottom of the beam between columns

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10
Q

Regarding concrete beam define stirrups

A

Vertical reinforcing bars

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11
Q

Aacu stand for in regards to fire resistive construction

A

Autoclaved aerated concrete units

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12
Q

Autoclave aerated concrete units are all components of what two things

A

Concrete plus aluminum powder

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13
Q

Three key notes regarding autoclaved aerated concrete units

A

Lighter than traditional concrete
Easily cut
For hour ASTM rating

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14
Q

Waffle concrete define

A

Closely spaced beams at right angles with unnecessary concrete formed out

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15
Q

What is left in place form in regards to fire resistive construction

A

Concrete floors cast on to corrugated steel

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16
Q

What is the concern with the cast in place concrete floor

A

A slot is left in the wall where the floor to be cast , wind can cause collapse

17
Q

What construction provides monolithic rigid frame building

A

Concrete floors in cast in place concrete framed buildings

18
Q

Hi tinsel strength wire has complete loss of prestress at what temperature

A

800f

19
Q

What is jacking the cables

A

Stressing the tendons during post tension

20
Q

What fire resistive construction our apartment houses in motels well adapt to

A

Reinforced masonry

21
Q

Brief description reinforced masonry

A

To Wyrges of brick
Width of one brick left between them
Vertical reinforcing rods
Concrete poured in void

22
Q

Fire resistive construction what is false work

A

Temporary structure to support concrete during construction

23
Q

Falsework can represent what percentage of cost of structure

A

60%

24
Q

Fire resistive modern office building, as much as what fraction of the height from floor to ceiling may be in ceiling or underfloor

A

One third

25
Q

Concrete tensile strength and shear resistance

A

Poor