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Are 5.0 PPD > STEEL > Flashcards

STEEL Flashcards

1
Q

which is strongest? Hot or cold rolled steel

A

Cold rolled steel

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2
Q

Stiffener plates

A

Welded on to make more rigid up the web at the point where extra forces are going to be applied

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3
Q

Back up bars

A

Prevent welding arc from burning through the flange

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4
Q

How are steel elements attached

A

Welding or bolts

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5
Q

Steel column baseplate

A

Distribute the load of steel columns on concrete foundations

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6
Q

Dog bone cuts

A

Control valve for seismic for es, deforming so that there is not a catastrophic failure of the welded or bolted joint

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7
Q

Eccentrically braced frame

A

Useful in seismic loads as it resists lateral seismic forces without buckling

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8
Q

Shear wall

A

Provides lateral stability by preventing lateral forces from collapsing the structure

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9
Q

Staggered truss system

A

Every other floor is a truss - minimizes the thickness of the slab and the number of columns and floor to floor height

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10
Q

Shear stud

A

Floor element welded to steel beam used to rigidly attached flooring (concrete) directly to beam

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11
Q

Girts

A

Metal channels that span between steel columns - they receive the cladding and hold it in place

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12
Q

Fireproofing steel columns (6)

A
  • encasements in reinforced concrete
  • enclosure in metal lath and plaster
  • enclosure in multiple layers of gypsum
  • spray-on fireproofing
  • loose insulation filled inside a sheet metal enclosure
  • water filled box column made with a wide flange shape with added steel plates
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13
Q

Fireproofing steel beams and girders (6)

A
  • encasement in reinforced concrete
  • enclosure in metal lath and plaster
  • rigid slab fireproofing
  • spray on fireproofing
  • suspended plaster ceiling
  • flame shielded exterior spandrel girder with spray on fireproofing inside
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14
Q

Castellated beam

A

Improved beam produced by flame cutting the web of a wide flange section along a zigzag path the reassembling the beam by welding its two halves point to point thus increasing its depth without increasing its weight

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15
Q

Washers

A

Used to prevent galling (wearing between bolt and beam)

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16
Q

Shear vs moment

A

Shear:
Flanges aren’t engaged

Moment:
More rigid
More expensive

17
Q

Open web steel joists/trusses (3)

A

K series: standard 8-60ft long and 8-30in deep

LH series: long span 25-96ft long and 18-48in deep

DLH series: deep long span 89-144ft long and 52-96in deep

18
Q

Bearing type bolt
vs
Slip critical bolt

A

Slip critical slightly deforms the steel, creating tension and not allowing any movement

Bearing type bolt it rests on the bolt, some movement allowed

Are 5.0 PPD (14 decks)

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