CHAPTER 2 Flashcards

0
Q

When breaching a masonry wall the members should open a

A

Triangular hole

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1
Q

Steel is ______ equally strong in compression and tension

A

Almost

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2
Q

When breaching a masonry wall loads coming down a wall to an opening

A

Do not follow a vertical path. They split and pass on both sides of the opening

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3
Q

When breaching a masonry wall if the wall elements fall part easily during breaching

A

Stop the breaching operation

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4
Q

If while breaching a masonry wall you find evidence that the wall has been strengthened at that area (evidence of a wall column)

A

Stop and start somewhere else. You are likely to be under a concentrated load

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5
Q

An arch is under ________ for its entire length

A

Compression

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6
Q

The thrust of an arch is

A

Outward

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7
Q

The removal of any part of an arch can cause _______ of the entire arch

A

Collapse

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8
Q

Because its thrust is downward, a bowstring truss is a

A

Beam and not an arch

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9
Q

A 20 foot column can carry ______ % of the load of a 10 foot column (both columns of the same cross section)

A

25%

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10
Q

If a 20 foot column is braced at midpoint (10 feet) and the bracing suddenly fails at a fire, that columns load carrying capacity decreases to _____ of what it was able to support with the bracing

A

1/4

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11
Q

A static load is a load applied

A

Slowly and remains constant. A heavy safe is a live static load

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12
Q

A concentrated load is a heavy load located at

A

One point of a building. A steel beam resting on a masonry wall

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13
Q

An impact load is a load delivered

A

In a short period of time. A member jumps on a roof

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14
Q

The hierarchy of building elements

A
Bearing walls
Columns
Girders 
Beams (floor and roof)
Decks
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15
Q

The 7 primary structural members

A
Bearing walls
Columns
Girders 
Headers
Hip rafters 
Ridgepoles
Floor or roof deck
Non bearing wall