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2nd year sheet metal > Multi Family blueprint reading > Flashcards

Multi Family blueprint reading Flashcards

1
Q

If an RTU was 10 ton (4,000 CFM), and the economizer was set at 15%, how many CFM of fresh air would be delivered to the conditioned zone?

A

600 CFM
4,000 x 15%

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2
Q

What is infiltration?

A

How unconditioned air enters a conditioned space

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3
Q

What does HEPA stand for?

A

High Efficiency Particulate Arrestor

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4
Q

What is the minimum number of suites in a structure that would make it multifamily?

A

2 or more individual suites

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5
Q

How is an insulations effectiveness measured?

A

R-value

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6
Q

What type of equipment can provide ventilation but does not have a provision to control humidity?

A

HRV

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7
Q

What must be installed in all ductwork that penetrates fire rated walls?

A

Fire damper

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8
Q

What type of HRV system is not coupled with any other HVAC equipment and stands alone with its own ductwork distribution of fresh air and stale exhaust?

A

Fully dedicated HRV system

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9
Q

What makes an MUA indirect fired?

A

Has a heat exchanger

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10
Q

Name 3 areas in a building that are negatively pressurized zones?

A

Commercial kitchens
Individual suites
Parkade

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11
Q

What can be installed in an elevator machine room to eliminate pressurization issues?

A

Transfer air duct

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12
Q

What is the number one reason for positive pressurization in hallways and stairwells?

A

Provide safe evacuation during a fire

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13
Q

What is the most common type of residential multi equipment installation?

A

Furnace providing HVAC

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14
Q

What does a dynamic smoke ventilation system do during a smoke event?

A

Exhaust smoke or provide clean pressurization air

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15
Q

What is the most efficient method of heating multi family structures when space, operation and installation costs are considered?

A

Baseboard radiant heating

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16
Q

What piece of equipment might be used to counteract the effects of high infiltration in a convenience store?

A

Air curtain

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17
Q

Which 2 agencies regulate/test the construction and installation of fire protection devices?

A

NFPA and ULC

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18
Q

What are 3 styles of fire dampers?

A

Curtain
Single blade
Multi blade

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19
Q

What component on a heat pump allows it to heat in the winter and provide cooling in the summer?

A

4 way reversing valve

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20
Q

Short walls built around the perimeter of a building are called?

A

Parapet walls

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21
Q

The roof triangle consists of rise, run and ?

A

Slope

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22
Q

The distance from one edge of the roof to the other is called?

A

Span

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23
Q

If a roof has a run of 12’, what is the span?

A

24’
Span is double the run

24
Q

What is required to cover the top edge of base or step flashing?

A

Counter flashing

25
Q

What type of flashing is provided on the top surface of a wall and comes with a drip edge?

A

Coping

26
Q

If a 2” gas line penetrates the roof, what is the minimum size pitch pan that can be used?

A

6” x 6”
2” minimum clearance on every side

27
Q

The sides on a gum box must be a minimum of how many inches high?

A

4”

28
Q

What are the 3 most common materials for metal roofs?

A

Copper, aluminum and galvanized

29
Q

Which is the most durable roofing material?

A

Copper

30
Q

What is the recommended ratio for inlets to outlets used for natural ventilation?

A

1 to 1

31
Q

Which ventilation system allows moisture to be transferred between air streams?

A

ERV

32
Q

What is the high or positive pressure side of a building called?

A

Windward

33
Q

What is the low or negative pressure side of a building called?

A

Leeward

34
Q

What type of equipment gives occupants the most control over room temperature in a motel?

A

PTAC
Packaged terminal air conditioner

35
Q

Name 2 types of solar space heating and the name given to the combination of these systems?

A

Passive, active
Hybrid

36
Q

What type of heat pump is the most common?

A

Air to air heat pump

37
Q

If there are changes to blueprints during construction, where would these need to be documented?

A

As built drawings

38
Q

Smoke dampers are designed to close in response to what?

A

Smoke alarm

39
Q

What is installed in a fire damper to hold it open under normal operating conditions?

A

Fusible link

40
Q

Grilles and diffusers are found where on an HVAC drawing?

A

On a callout

41
Q

Which type of damper is designed to stop both heat and fire?

A

Ceiling radiation damper

42
Q

What must be done to duct when it is to include acoustic insulation?

A

Upsize the duct as to maintain internal dimensions

43
Q

If you were to install a fire damper in a vertical wall, in horizontal duct, would you order a vertical or a horizontal damper?

A

Vertical

44
Q

Specifications on a commercial blueprint are called?

A

Divisions

45
Q

What must be included when installing a heat pump in Alberta?

A

Back up heating system

46
Q

What is the clearance guideline for a fire damper installed in a floor or wall?

A

Minimum 1/8” for every 12” of dimension
Maximum 2” bigger than the minimum size opening

47
Q

What type of fire damper has the blades out of the airstream?

A

Type B

48
Q

What must you refer to when installing fire protection devices?

A

Manufacturer’s certified installation instructions

49
Q

What is the minimum rated fire damper that can be installed in a wall with a two (2) hour fire rating?

A

1.5 hour fire rating

50
Q

Name 3 types of radiant heating?

A

Wall panels, in floor and ceiling panels

51
Q

Most common type of equipment used to condition (heat/cool) a building?

A

RTU -roof top unit

52
Q

What do the letters EF stand for on a blueprint?

A

Exhaust fan

53
Q

What is needed beside a fire damper, to reset the fusible link if a grille or diffuser is not present?

A

Access door

54
Q

What is the most economical way to heat multi family structures?

A

Radiant heating

55
Q

Smoke dampers need to be installed at or within ________ of the smoke separation barrier, as well as before the duct takeoffs?

A

24”

56
Q

If a roof slope is 1 in 8, what is the amount of free ventilation area required in an attic?

What if the roof slope is 1 in 6?

A

1 in 8-1 square foot of free ventilation for every 300 square feet of insulated ceiling area.

1 in 6-1 square foot of free ventilation for every 150 square feet of insulated ceiling area.

57
Q

In a crawl space, what is the unobstructed vent area required for natural ventilation?

A

1square foot for every 500 square foot floor area

2nd year sheet metal (5 decks)

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