Buidling Construction πŸ’πŸ¨πŸ¦πŸ›β›ͺ️ Flashcards Preview

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Flashcards in Buidling Construction πŸ’πŸ¨πŸ¦πŸ›β›ͺ️ Deck (37):
1

In physics, the ________ states that the intensity of the thermal radiation is a function of the fourth power of the absolute temperature of the thermal radiation source.

Stefan-Boltzmann law

2

The _______ is widely used in fire protection to establish the required performance standards in building codes. The primary means used to determine a fire resistance rating is to subject the component to be evaluated to the heat of a standard fire in a test furnace

Standard fire resistant test

3

The most commonly used test for determining combustibility is
_______ standard test method for behavior of materials in a vertical tube furnace at 750oc

ASTM E 136

4

A back and fourth effect due to variations in the velocity of the wind

Rocking effects

5

An _______ is a load applied to the center of the cross section of a structural member and perpendicular to that cross section

Axial load

6

Materials with a ______ rating are required in corridors that provide exit access.

Class B (26-75)

7

The most common means for protecting openings through fire rated walls is by the use of ______.

Fire doors

8

A _______ consists of layers of beams placed at right angles to each other that are usually encased in concrete

Grillage footing

9

Wood panel products are graded for their structural use and their exposure durability. A grade stamp appears on the back of a structural panel that indicates its intended structural application and its suitability for exposure to water. The ______ of 32/16 indicates that the panel may be used as roof sheathing on rafters 32 inches apart or as subflooring on joists 16 inches apart.

Span rating

10

The vertical combustible spaces between the studs in________provide a channel for the rapid communication of fire from the floor to floor.

Balloon frame construction

11

The interior of a wood frame building can be finished using a number of materials including ordinary plywood or OSB. Where a degree of fire resistance is required, the ______ materials most commonly used are gypsum board or plaster.

Interior Finish materials

12

A _______ is an extension of a masonry or Steel wall that projects above the roof. Found on exterior masonry walls and fire walls of buildings with combustible roofs. Project from 1 to 3 feet or more above a roof usually without lateral support.

Parapet

13

When a beam transmits a large vertical load to a masonry wall, the wall may be increased in thickness at the point of support with a pilaster to reduce the compressive stresses in the masonry.
_______ in commercial buildings, for example, are frequently supported on pilasters.

Wood roof trusses

14

A collapsing roof may dislodge only a parapet or an entire wall. Firefighters should always assume that if a wall collapses it will fall out from the building a distance _______.

At least equal to the height of the wall

15

A _____ is constructed as a solid arch that may be built up from angles and webs with a cross section similar to that of a beam.

Girder arch

16

A ______ consists of a ceiling material suspended from the supports for the floor or ceiling above. The most common method is to use mineral tiles in a steel framework suspended by wires .

Membrane ceiling

17

When the concrete arrives at the job site, its quality is checked by administering a test

Slump test

18

When precast beams are to be supported by columns, the beams may be supported by ________ cast into the columns. A ________ also known as a bracket, is a ledge that projects from the column and supports the beam.

Corbel

19

Are non combustible and produce fire resistant roof coverings that have excellent resistance to flying brands.

Clay tiles, slate, and cement tiles

20

Is the transfer of heat energy through space by electromagnetic waves

Thermal radiation

21

From a fire protection standpoint, one of the most basic properties of building materials is their degree of ________.

Fire resistance

22

Has been commonly referred to as β€œordinary construction”

Type 3

23

The _________ is the product of the weight of the combustibles multiplied by their heat of combustion

Fire load

24

The impact effect the wind has on a surface. This force may be reduced by streamlining the surfaced encountered.

Direct pressure

25

Tends to pull the material apart

Tension

26

Have an intermediate landing between floors and reserve direction at any point

Return stairs

27

The __________ is the most commonly used method for evaluating the surface burning characteristics of materials

Steiner tunnel test

28

When a building is constructed using a structural frame for its main structural support, the exterior wall functions only to enclose the building and is known as a _________.

Curtain wall

29

Three types of joints can be used to join laminated members end to end.

Butt, scarf, and finger joint

30

Ignition temperatures for wood are difficult to measure precisely because the ignition temperature of wood is affected by such variables as the following

Density of wood
Size and form of the wood
Moisture content
Rate of heating
Nature of heating source
Air supply

31

The vertical combustible spaces between the studs in __________ provide a channel for the rapid communication of fire from floor to floor

Ballon frame

32

The mass of a masonry wall is significant to fire personnel because non reinforced masonry walls can _______ when a building becomes heavily involved in fire thus posing a serious safety risk to emergency responders.

Topple

33

Because intersecting masonry walls tend to support each other, the corners of the building or other points of intersection, such as _________ and __________ will be the strongest points in a masonry structure.

Stairwells or elevator shafts

34

The speed with which unprotected steel fails when it is exposed to fire depends on several factors

Mass of the steel members
Intensity of the exposing fires
Load supported by steel
Type of connections used to join the steel members
Type of steel

35

The single most important factor in determining the ultimate strength of concrete is the _________

Water to cement ratio

36

Has a break in the slope of the roof on all four sides

Mansard roof

37

Are effective against a moderate fire exposure

Class b roof coverings