PX : Building Systems and Integration

Question 1

79 What is displacement ventilation?

Answer 1

Air distribution in which supply air originates at the floor level and rises to return air grilles in the ceiling.

Question 2

109 What are five causes of building movement that must be considered when detailing?

Answer 2

-dead load deflection -lateral loading (wind and seismic) -Water absorption -live load deflection -temperature change

Question 3

110 What is a tolerance?

Answer 3

Allowable variation from a given line, dimension or size.

Question 4

108 What are four types of fire detection devices?

Answer 4

-photoelectric detectors -rise-of-temperature detectors -ionization detectors -flame detectors

Question 5

107 What two methods are used to measure speech privacy in open offices?

Answer 5

-articulation class -articulation index

Question 6

106 What is a compartmentation in interior design?

Answer 6

The practice of separating areas of a building with fire-rated construction in order to contain a fire to one area and limit its spread.

Question 7

105 What is a dedicated circuit?

Answer 7

This is a circuit that contains a single electrical outlet.

Question 8

104 What is an access door?

Answer 8

A opening used to provide access to mechanical and electrical components behind walls.

Question 9

103 What is a chase wall?

Answer 9

2 runs of studs separated by a space large enough to accommodate pipes.

Question 10

102 What is the typical spacing for residential studs and joists?

Answer 10

16” on center

Question 11

101 What are joists, and what are they typically made of?

Answer 11

These are horizontal repetitive elements used to support floors. They are typically made from wood members with a nominal width of 2”.

Question 12

100 Why should post-tensioned concrete slabs never be cut into?

Answer 12

The tendons of this construction element should not be cut because they are under high stress.

Question 13

99 What is a core drill?

Answer 13

A hole with a 2-4” diameter drilled through a concrete floor to accommodate conduits for electrical, telephone and data wiring.

Question 14

98 What is required at the top of a partition to accommodate deflection of the floor above?

Answer 14

A slip joint.

Question 15

97 What type of load is created on a building by the force of wind or an earthquake?

Answer 15

Lateral

Question 16

96 What are live loads?

Answer 16

People, furniture, and movable equipment

Question 17

95 What type of concrete system is likely to be found where floor-to-floor heights are kept to a minimum?

Answer 17

Flat plate

Question 18

94 What are the two major types of concrete structural systems?

Answer 18

-cast in place -pre-cast

Question 19

93 What four characteristics distinguish a fire-rated suspended acoustical ceiling from a non-rated standard ceiling?

Answer 19

-it is part of an entire fire-rated floor/ceiling assembly -its tiles must be rated mineral tiles -it uses hold down clips -it must have expansion slots in the grid.

Question 20

92 What type of construction element is shown, and what are the components labeled A and B?

Answer 20

This is suspended gypsum wallboard ceiling A-cold-rolled steel channel B-furring channel (hat channel)

Question 21

91 In this diagram of a door opening, what are the components labeled A, B and C?

Answer 21

A-Head B-jamb C-threshold (or sill)

Question 22

90 What are the common differences between residential and commercial construction of wallboard partitions?

Answer 22

residential is typically 2x4 wood studs with 1/2” wallboard, while commercial uses metal studs with 5/8” wallboard.

Question 23

89 What is a sole plate?

Answer 23

Horizontal wood member that serves as the base for the studs in a wood stud partition.

Question 24

88 What are the components of a fire-rated door assembly?

Answer 24

Door (including glazing), frame, hardware

Question 25

87 What type of construction element is shown, and what are the components labeled A, B, and C?

Answer 25

The illustration shows a section of a standard wood doorframe in a wood stud partition, including the stop (A), casing trim (B), and shim (C)

Question 26

86 What is a daylight factor?

Answer 26

This is the ratio of the indoor illuminance at a point on a horizontal surface to the unobstructed exterior horizontal lluminance.

Question 27

85 What are some ways to increase speech privacy in a large space?

Answer 27

-Absorptive ceiling material -Space dividers to reduce sound transmission -create distance between noisy activities -arrange hard surfaces to minimize reflected sound -use a well-designed background masking system

Question 28

84 What are five basic ways to control sound transmission through a partition?

Answer 28

-increase mass -provide additional resilience -Insulate the cavity -Seal all crack between components -Provide sealed openings, such as doors and windows.

Question 29

83 In a large room, where is the most effective place to install a sound-absorbing material?

Answer 29

Ceiling

Question 30

82 What is the sound transmission class (STC) of a partition?

Answer 30

A single number rating of a partition’s ability to reduce sound transmission.

Question 31

81 What are the two most important variable in controlling sound transmission through a building element?

Answer 31

-Mass -Stiffness

Question 32

80 What is a three-way switch?

Answer 32

Allows users to control a device from 2 different locations.