Group 6.A Aluminum Storefronts and Entrances, Part 1: Design Considerations Flashcards

1
Q

AAMA ______ Aluminum Storefront and Entrance Manual.

A

SFM-1-14

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2
Q

Storefront and entrance systems typically include what five primary elements:

A
Entrance Doors
Door Frames
Framing for Fixed Glass
Glass & infill panels
Hardware.
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3
Q

_____ is the most common material used in frames for storefront and entrance system.

A

Aluminum

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4
Q

Aluminum storefronts and curtain walls are / are not covered by the NAFS specification.

A

are not.

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5
Q

The most common material for storefront (and curtain wall) frames is selected for what three primary material characteristics?

SEC

A

High STRENGTH/weight ratio
Able to support EXPANSIVE glazing
Minimal CROSS-SECTIONAL area

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6
Q

These four key building characteristics are evaluated to arrive at the optimal entrance design:

Hint: TOCH)

A

Traffic
Orientation
Climate
Height of the building

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7
Q

Specific design considerations for the storefront
system include:

8 listed - could be grouped into three categories:
building requirements (4)
Weather impacts (3) 
User needs (2)
A

Traffic volume
safety
security
energy efficiency

Heat/cold: effects of temperature changes
Precipitation: protection from rain and snow
Wind: drafts and wind pressure

ease of operation
accessibility for the physically handicapped.

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8
Q

Traffic Volume

Passing sidewalk traffic dictates the _____ of entrances.

Size
Height
Location
Number

A

Location

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9
Q

Traffic Volume:
The flow of traffic FROM the sidewalk or parking area will determine the ______of entrances required.

Size
Height
Location
Number

A

Number

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10
Q

Safety:
Checkpoints to enhance safety address what 4 key topics:

(Hint: D.I.C)

A

Identification - assure the door looks like a door, not an opening
Distinct: Doors distinct from sidelights (vice versa)
Illumination: Well, is it lit?
Clearance: Will outs-wing doors smack passing pedestrians. (not that this is always a bad thing)

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11
Q

Safety:

Designers position entrance doors back from the face of the building for two key reasons:

A

prevent them from swinging into pedestrian cross traffic.

protect the doors from cross winds.

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12
Q

Security:
Closely related to safety is the security that the entrance system provides for the building. Security
checkpoints include ensuring that 3 key parameters are addressed:

(Hint: ILL)

A

Illumination
Locks adequate for needs of bldg.
Locks protected against tampering

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13
Q

Energy efficiency:
Entrances in cold climate areas may require vestibules with _____.

Walk-off mats
Heaters
Taller entrances due to snow
Exterior and interior doors

A

Exterior and interior doors

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14
Q

Energy efficiency:

What aspects of the storefront assembly require specific consideration for energy efficiency needs:

(Hint: GFW)

A

Glass: insulating and reflective, and to the
Frames - thermal properties of the framing sections
Weatherstripping - adequate to minimize infiltration

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15
Q

Thermal expansion:
Potential negative consequences of thermal expansion include:

(6 listed)

A
buckling
stresses on glass
seals failures 
undue structural stress
fasteners damage 
reduced performance
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16
Q

Thermal expansion:
A representative maximum range of ambient
temperature in the vicinity of 40 degrees North
Latitude is:

40 degrees
80 degrees
120 degrees
160 degrees

A

120 degrees

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17
Q

Thermal expansion:
Dark colored metal may reach temperatures as high as ___ degrees Fahrenheit or higher when exposed to direct solar heat and may be ___ degrees colder than air temperature on clear winter nights.

180 / 40
160 / 10
120 / 40
100 / 10

A

160 / 10

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18
Q

The range of temperature of the exposed metal surface in a storefront system is considerably
______ than that of the surrounding air and, except
in the southern-most states should be assumed to be at least ____ degrees Fahrenheit.

less / 120
greater/ 180
greater / 220
less/ 100

A

greater/ 180

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19
Q

Thermal expansion - Stack Effect:

Stack effect is problematic in heating season when rising warm air in the building _____ the pressure in the base of the building causing cold air to ______
windows or other openings and leakage.

Increases / enter through
Equalizes / stop flowing through
reduces / enter through
fluctuates / buffet

A

reduces / enter through

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20
Q

Thermal expansion - Stack Effect:
Stack effect” is the ______ convective airflow
within buildings caused by ____________
temperature and pressure differences.

vertical / interior-exterior
horizontal / mechanical
turbulent / fluctuating
vertical / the reduction of

A

vertical / interior-exterior

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21
Q

Thermal expansion - Stack Effect:

These two key factors influence the severity of stack-effect:

A

Height of the building

Thermal (& pressure) difference

22
Q

Water Penetration;

Storefront system design ____ provide means to drain to the exterior face of the wall any water entering at joints and/or any condensation occurring within the wall construction.

shouldn’t need to
should
must
will rarely

A

must

23
Q

Water Penetration:
_______lite, solid glass areas of the storefront should permit no uncontrolled water penetration when tested in accordance with ASTM ____

Operable / E1105
Fixed / E331
Operable / E783
Fixed / 501.2

A

Fixed / E331

501.2 is an AAMA standard.

24
Q

Water Penetration:
The default differential static pressure recommended in SFM-1-14 for testing of fixed, solid-glass, storefront assemblies is _______.

20% of the design pressure
15% of the design pressure
12. p.s.f.
6.24 p.s.f.

A

6.24 psf

25
Q

Air Infiltration:
Air infiltration through the fixed lite areas, which
can work against all other energy efficiency
measures should be tested in accordance with _____.

ASTM E331
ASTM E1105
ASTM E283
AAMA 503

A

ASTM E283

26
Q

Air infiltration through the fixed lite areas should not exceed ____ cfm / s.f. at a differential static pressure of ____ psf.

.12 / 6.24
-.12 / 1.57
.06 / 6.24
.06 / 1.57

A

.06 cfm/s.f. / 1.57 p.s.f.

27
Q

Actual testing pressure and acceptable infiltration rates should be as determined by the designer, per:

AAMA SFM-1-14
ASTM E283
NAFS
Site conditions

A

Site Conditions

28
Q

Wind:

More damaging wind effects can occur
when an open door is:

caught by wind
recessed from the facade
in a vestibule
subject to stack effect

A

caught by wind

29
Q

Wind:

Wind exposure is generally determined based on_____.

ASTM E283
ASCE 7
NAFS
SFM-1-14

A

ASCE 7

30
Q

Wind:

Aside from prescribed wind loads ____ testing may be required to determine design wind loads.

Deflection
Missile impact
Door hardware
Wind Tunnel

A

Wind Tunnel Testing

31
Q

Wind:

Wind tunnel testing may be appropriate to consider based on the ____ of the building

(3 conditions - 3 S’s)

A

Shape - The building shape is other than rectangular
in plan
Site - The site location may have unusual wind
conditions
Situation - The building may be critically located with
respect to other nearby buildings

32
Q

Wind - Uniform Load Structural Tests

ULS tests are conducted per ASTM_____.

E331
E283
E783
E330

A

E330

33
Q

Wind:

Uniform load structural tests are conducted at pressures _____ the inward and outward acting design wind pressures.

equal to
equal to 1.5 times
equal to 2 times
equal to 2/3 of

A

equal to 1.5 times

34
Q

Wind:

In part, criteria for passing a Uniform Load Structural test require that there be no __ or damage to (4 items).

(hint: G - FHA)

A
Glass breakage 
or damage to
F: fasteners or anchors
H:  hardware parts
A:  actuating mechanisms
35
Q

Wind:

In part, criteria for passing a Uniform Load Structural test per ASTM E330 require that there be no __ or damage to (4 items).

(hint: G - FHA)

A
Glass breakage 
or damage to
F: fasteners or anchors
H:  hardware parts
A:  actuating mechanisms
36
Q

After uniform load testing per ASTM E330, windows, doors and operating hardware must ____ at a minimum.

not fall out
display no visible deformation
retain their color
function satisfactorily

A

function satisfactorily

37
Q

Wind:

After uniform structural load testing per ASTM E330 storefront and entrance framing members can have no permanent deformation in excess of ___ percent of their clear span.

  1. 1 %
  2. 0 %
  3. 0 %
  4. 2 %
A

0.2 %

38
Q

Ease of Operation:

Three external factors affecting ease of operation, as well as structural requirements are:

A

Wind pressures,
Stack effect
Mechanical - HVAC Pressure differentials

39
Q

A commonly used approach to satisfy the ease of
operation requirement is an:

Doorman
Vestibule
Lobby
Awning

A

Vestibule

OK, just having a little fun with an easy one

40
Q

Ease of operation:

Other solutions for ease of operation in a vestibule where the stack effect in high rise buildings may be serious are: (2 types)

A

balanced swinging doors

automatic sliding doors

41
Q

Accessibility:

The primary requirement for handicapped accessibility is the ____ of the door.

operating force
clear width
weight
clear glass area

A

clear width

42
Q

Accessibility:

The primary requirement for handicapped accessibility is the ____ of the door.

latch force
clear width
weight
clear glass area

A

clear width

43
Q

Accessibility:

What standard outlines accessibility guidelines?

ASI/ANSI A117.1
NAFS
SFM-1-14
ASCE 7

A

ASI/ANSI A117.1

44
Q

Accessibility:

ASI/ANSI A117.1 requires a minimum clear doorway width of ___ inches, which satisfactorily accommodates wheelchairs.

28”
32”
40”
44”

A

32”

45
Q

Accessibility:

A maximum door operating force for pushing or pulling open an exterior hinged door must be ___ pounds of force, or ___ pounds of force for a sliding door.

8.5 / 5
10/ 5
6.24 / 1.57
5 / 8.5

A

8.5 / 5

46
Q

Other:

Other parts of the design requirements may include:

(LSBH - Think of outside condition transmission and potential perils)

A

Light - minimum light transmittance
Sound - maximum allowed sound transmission
Blast resistance
Hurricane impact resistance

47
Q

Quiz Question #1:
Specific design considerations for storefront systems include:
*traffic volume, safety and manufacturer recommendations
*safety, security and energy efficiency
*east of operation, thermal expansion and product type
*air infiltration, water penetration and designer plans

A

safety, security and energy efficiency

48
Q

Quiz Question #2
____ is/are most susceptible to occasional high wind pressures.

Open swing doors
The building structure
Storefront framing
Fixed storefront windows

A

Open swing doors

49
Q

Quiz Question #3

Uniform load structural tests are conducted in accordance with:

ASCE/SEI 7
ASTM E283
ASTM E330
ICC/ANSI A117.1

A

ASTM E330

50
Q

Quiz Question #4

Which of the following does NOT help solve problems of stack effect, windy conditions and heating cooling losses?

vestibules
revolving doors
sliding doors
swinging doors

A

swinging doors

51
Q

Quiz Question #5

Accessibility requirements include a minimum clear doorway width of ___ inches and a maximum exterior hinged door opening force of __ pounds.

28/5
30/7
32/8.5
40/10

A

32/8.5

52
Q
The maximum opening force for barrier-free exterior storefront door is:
A.  5 lbs
B.  6.2 lbs
C. 8.5 lbs
D.  10 lbs
A

8.5 lbs.