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PDD Flashcards

1
Q

Low solar heat gain coefficient (SHGC) windows have what element in their glazing unit?

A

Low-E films to protect from sunny-day overheating

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2
Q

Where do we want a high SHGC for a direct gain space?

A

South facing glass

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3
Q

How do you get to lbs/ft from a psf value?

A

Times the psf value by the spacing of the beams

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4
Q

How do you change lbs/ft to kips/in?

A

Divide by 1000 and divide by 12

You can check the order

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5
Q

Wood-framed building in hurricane zone - what 3 items should be specified?

A

Affix the foundation to the base plate with J-bolts

Glue down roof sheathing

Tie the roof to the walls with hurricane straps

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6
Q

What are the different types of mortar?

A

MaSoN wOrK

Type M
Type S
Type N
Type O
Type K

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7
Q

What is the strongest mortar type?

A

Type M

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8
Q

Do you want mortar to be harder or softer than the brick?

A

Softer so that it doesn’t spall the brick during freeze-thaw cycles

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9
Q

What is the coefficient of utilization?

A

Number that ranges from 0 - 1, measuring how much of the light from the fixture actually reaches the work plane

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10
Q

What does a lower coefficient of utilization mean?

A

The room geometry requires more light fixtures
The room’s surfaces are darker and absorb more light, requiring more light fixtures

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11
Q

What does a higher coefficient of utilization mean?

A

The room geometry requires less light fixtures
The room’s surfaces are brighter and reflect more light, requiring less light fixtures

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12
Q

What controls the rating of an opening?

A

The least-stringent component

Not the highest, not the average and not the sum

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13
Q

What rating do door assemblies require compared to their surrounding wall?

A

3/4

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14
Q

What light fixtures require a ballast?

A

Fluorescent, Metal Halide and High Pressure Sodium

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15
Q

What light fixture has the lowest CRI?

A

Low pressure sodium and high pressure sodium

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16
Q

What type of fixture generally provides a cool color temperature?

A

Metal halide

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17
Q

What fixture has the longest “warm-up” time?

A

Metal halide

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18
Q

Where are metal halide lamps used most?

A

Stadiums

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19
Q

What is a closed proprietary specification?

A

A single specification or company as the source of the specification.

It does not allow for substitutions.

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20
Q

What is a prescriptive specification?

A

Instruct the builder, in detail, how to construct an element.

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21
Q

What is a performance specification?

A

Leave flexibility to the contractor, so long as the specification as built performs correctly

22
Q

Where are GFI outlets required?

A

Outdoors
Laundry areas
Garages
Crawl spaces
Hot Tubs
Basements
Kitchen Counters
Generally anywhere people often occupy that’s near (< 6’) from water

23
Q

Where are GFI outlets not required?

A

Attics
Hot water heaters
Living rooms etc

24
Q

If you double the distance of a light from it’s source, how much does the illuminance drop?

A

By a 1/4

Inverse-square law

25
What are some common types of Class I vapor retarders?
Foil Thick Polyethylene Sheets Vinyl Wallpaper Melamine
26
What are some common types of Class II vapor retarders?
Some Plywoods Some Latex Paints Kraft Paper Rigid Foam Insulation
27
What are some common types of Class III vapor retarders?
Gypsum Wall Board Latex
28
What does a lower perm value mean?
Less vapor can pass through
29
What does a high perm value mean?
More vapor can pass through
30
What is the perm value range for a Class II vapor retarder?
0.1 - 1.0 Perms
31
What is the perm value range for a Class III vapor retarder?
1 - 10 Perms
32
What ratio do you want from each layer of a wall assembly?
10:1 perm ratio
33
Between air infiltration and vapor diffusion, which is more likely to cause condensation?
Air infiltration
34
When do you use grout in CMU?
To create a load bearing wall. Grout creates compressive strength Rebar (horizontal and vertical) provides tensile strength
35
When do you use vermiculite or perlite-filled CMU?
Increased thermal resistance, increased sound TL and improved fire rating
36
Where is transverse bracing required in a seismic zone?
Ends of the duct runs, perpendicular to the travel of air flow
37
What materials have high embodied energy due to their mining process?
Copper, aluminum and stone
38
What are the best options for rubber gasketing?
Butyl rubber EPDM Silicone gaskets
39
What is Styrene-Butadiene Rubber (SBR)?
Cheap syntheic rubber Cheap and not strong or resilient over prolonger pressure NOT USED IN CONSTRUCTION OFTEN
40
what is Butyl rubber?
Synthetic rubber that is airtight, watertight, robust, thermally and chemically stable, sunlight/UV resistant and overall stout. MOST EXPENSIVE
41
What is EPDM?
Most water resistant Resistant to abrasions and tears, stands up to weathering and breakdown from sunlight exposure, maintains resilience over prolonged pressure
42
What is silicone?
Resists breakdown from sunlight exposure and maintains resilience over prolonged pressure. Longer lifespan than EPDM, more stretchy, much better in lcations where it might get hot
43
Rubber short hands
Butyl - best but expensive EPDM - most water resistant, not good in hot climates Silicone - best for hot climates
44
What is the difference between a storefront and a curtain wall?
Storefront is typically limited to one story and sits inboard of the edge of the slab Curtain wall drapes down the building like a curtain
45
Where does the reinforcing go for a storefront"?
In the mullion
46
What is a control joint?
Example is a shallow groove in concrete to control cracks from shrinkage Gives the concrete a place to shirnk and crack, so you can control where those happen
47
RoTs for expansion joint locations?
At changes in wall height or thickness At columns, pilasters, and wall intersections Near corners (within 10' of one side of a corner) On both sides of openings wider than 6' On one side of an open smaller than 6'
48
Where is delayed egress not permitted?
Assembly, Education, High Hazard
49
What is the best conduit to use?
Aluminum Steel if you're burying it in concrete and want to pull wires more easily PVC when you're doing a wet location NEVER COPPER
50
What is the code prescribed maximum shear wall ratio?
3.5:1
51

ARE 5.0 (9 decks)

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