Cmp 210 Test 2

Front 1

Type III Construction

Back 1

Wood frame with a brick outside

Front 2

Fire cuts in type III construction

Back 2

floor joists are cut at a 45 degree angle to the wall. this way, if the center of the joist gives way, it will fall inward before the fire does damage to the wall.

Front 3

wood furring strips

Back 3

placed on the inside of a wall or underside of a roof rafter, used to hang drywall on.

Front 4

Type III construction floor and roof loads

Back 4

supported by wood or steel beams

Front 5

Type 4 construction

Back 5

-Heavy timber construction
-very good performance
-will last a long time
-multi-story industrial wood construction

Front 6

Type 4 exterior walls

Back 6

non-combustible material; brick, cement, steel (?)

Front 7

type 4 interior components

Back 7

-solid or laminated wood
-parts not concealed

Front 8

type 4 columns

Back 8

- solid or laminated glued wood
- at least 8 inches nominal in any dimension under floor loads
- at least 6x8 under roof or ceiling loads

Front 9

type 4 roofs

Back 9

- no concealed spaces
- splined or tongue and groove wood decking (laminated or sawed) of 2" in thickness
- can also use 3" thick planks placed like flooring
- 1-1/8" plywood sheathing

Front 10

yooper dome

Back 10

60 psf snow loads and 80 mph wind loads, all wood construction.

Front 11

Factors affecting building fires

Back 11

- architecture and design
- construction materials and systems
- use and occupancy
- fire detection and suppression
- education of the public

Front 12

Combustibility of Materials

Back 12

determined by:
- American Society for Testing Materials
- American Society of Mechanical Engineers
- National Fire Protection Agency
- Underwriter's Laboratory
- Factory Mutual
- Consumer Product Safety Commission

Front 13

ASTM

Back 13

American Society for Testing Materials

Front 14

ASME

Back 14

American Society of Civil Engineers

Front 15

NFPA

Back 15

National Fire Protection Agency

Front 16

UL

Back 16

Underwriters Lab

Front 17

Products of Combustion

Back 17

- Heat
- Smoke: Gas, solid particulates and liquid particulates

Front 18

PVC on fire

Back 18

Breaks down into 75 different gases when it burns
- Carbon Monoxide and Dioxide
- Hydrogen Chloride
- Hydrogen Cyanide
- Acrolein

Front 19

Fire Rated Assemblies

Back 19

Tested for a period determined by the fire rating to assure they:
1. Perform Structural Function without Collapse
2. Remain fire tight
3. temperature on outside of room thats on fire stays cool enough
all for the duration of the test

Front 20

Compartmentalization

Back 20

separating a building into different fire-rated parts in order to contain fire where it started.

Front 21

Fire Ratings

Back 21

- Must have 1 hour walls protecting auxiliary stairs.
- 2 hour walls protecting main stairs and exit

Front 22

Underwriters' Lab Fire Resistance Directory

Back 22

Gives fire ratings for various assemblies, based on standard fire tests for full assemblies. Ratings derived from an increasing temperature as time goes on.

Front 23

Fire Stopping Assemblies

Back 23

Painted red, includes fire-caulk, covers for lights and electric assemblies.

Front 24

Automatic Fire suppression systems

Back 24

- Building codes encourage use by allowing more area and height in sprinkler-installed buildings
- Allows for reduction in Fire rating for some assemblies
- reduces required class of interior surfaces.

Front 25

Composite Construction

Back 25

Refers to two load carrying structural members that are integrally connected and deflect together.

Front 26

Examples of Composite Construction

Back 26

- Metal decking with concrete fill
-

Front 27

Advantages of Composite Construction

Back 27

- Reduced cost of structural steel frame
- decreased weight, reducing foundation costs
- reduced live-load deflections
- shallower beams can be used, reducing building height
- span lengths increased

Front 28

Disadvantages of Composite Construction

Back 28

- Shear connector installation will require a licensed welder to be subcontracted
- takes time to install shear connectors
- should use an experienced, therefore expensive subcontractor for the concrete work due to elevated slabs.

Front 29

Composite Metal Decking Features

Back 29

- has ribs/embossments to increase strength of the bond between decking and concrete

Front 30

Installation of metal decking

Back 30

- placed on the structural steel at predetermined times in the erection sequence
- may be installed by the steel work contractor or by a separate decking contractor.
- can take place in a controlled decking zone

Front 31

Connection of Decking to Steel

Back 31

- Usually done by puddle welds
- also done by powder-actuated tools

Front 32

Shear connectors

Back 32

- Nelson studs or shear studs
- mostly headed studs used
- welded to the decking
- creates a strong bond between the slab and steel beams to reduce live load deflection

Front 33

Installation of shear connectors

Back 33

- Spacing is an important part of the composite design and should be adhered to.

Front 34

Placing concrete on composite decking

Back 34

- Deposited over supporting members first, then spread toward the midspans
- accumulation of a deep pile of concrete must be avoided.
- Joints located over beams or girder webs
- Shoring should be used until 75% when this is not possible

Front 35

Issues affecting the installation of shear connectors

Back 35

- moisture
- cold

Front 36

Angle Beam

Back 36

L-shaped

Front 37

L4x3x5/8

Back 37

Angle Beam with one 4 inch leg, one 3 inch leg and a thickness of 5/8"

Front 38

Channel Beam

Back 38

U-shaped Beam

Front 39

C12x30

Back 39

Channel Beam with a depth of 12" and a nominal weight bearing of 30 lbf/ft

Front 40

Wide Flange Beams

Back 40

H beams without tapered flanges

Front 41

W27 x 161

Back 41

Wide flange beam with a depth of 27 inches and a nominal weight per foot of 161 lb/ft

Front 42

S Beam

Back 42

H beam with tapered edges

Front 43

S15 x 54.7

Back 43

S beam with a depth of 18 inches and a nominal wt. bearing of 54.7 lb/ft

Front 44

Cambering

Back 44

Deflecting steel beams in the center to account for the weight of concrete floors. done by applying heat or mechanical pressure.

Front 45

Plumbing up

Back 45

vertically aligning a structure

Front 46

lateral stabiliy in a steel framed building

Back 46

provided by masonry elevator shafts and stairwells

Front 47

ACI

Back 47

American Concrete Institute

Front 48

PCA

Back 48

Portland Cement Association

Front 49

CRSI

Back 49

Concrete Reinforcing Steel Institute

Front 50

splices

Back 50

Places where rebar connects, like splicing a wire

Front 51

A325 Bolts

Back 51

High Strength, medium carbon bolts. most common bolts used in building construction.

Front 52

A490 Bolts

Back 52

Cost more than A325's, but are heat treated

Front 53

Most Common Bolt Sizes

Back 53

3/4", 7/8", 1", up to 8" in length

Front 54

grip

Back 54

distance from behind the bolt head to the washer face

Front 55

bolt length

Back 55

measured from behind the bolt head.

Front 56

bearing joint

Back 56

weight is beared by the bolts

Front 57

slip critical joint

Back 57

load is transferred between members by friction in the joint.

Front 58

yielding - bolts

Back 58

inelastic deformation from an excess load put on a bolt.

Front 59

fracture - bolts

Back 59

bolt shears and breaks totally

Front 60

shear plane

Back 60

the plane in which the two components being held together by the bolts create in between each other.