PERFORMANCE January 15, 2018 Prepared for Arthur west Consulting Engineers, UAE

By Jacob Mathew
CALCULATOR jmathew@guardian.com 00971 50 6479188

Transmittance Reflectance U-Value Solar

Color
Relative Shadin Heat
Glass 1 Glass 2 Renderi
Make-u Heat g Gain
Make-up Name & & Visible Solar Winter Summer ng
p Icon Visible (τv Solar (τe Gain Coeffici Coeffici
Coating Coating Night Day Index
%) %)
(W/m²·K) (W/m²·K) (RHG) ent (sc) ent
ρv % out ρv % in ρe % out (Ra)
(SHGC)
SunGu
Guardi ard®
an SN 66 T
Option 1( Light Float (Prelim
Green) Guardian Glass inary) 63 28 13 16 26 1.60 1.09 249 0.38 0.33 95.3
Middle East UltraCl on
ear Clear
(CE) (Middle
East)
SunGu
ard®
SN
Guardi 70/37
an HT (CE)
Option 2- Float on
Guardian Glass Guardi 66 28 12 13 27 1.59 1.06 248 0.38 0.33 93.5
Europe(Neutral) UltraCl an
ear Float
(CE) Glass
ExtraC
lear
(CE)
SunGu
ard®
SN
Guardi
70/35
an
Option 3- (CE) on
Float
Guardian Guardi
Glass 66 27 13 14 32 1.59 1.06 237 0.36 0.32 93.3
Europe(Light an
UltraCl
Blue) Float
ear
Glass
(CE)
ExtraC
lear
(CE)
Calculation Standard: NFRC 2010

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Option 1( Light Green) Guardian Middle East

Thermal
Stress
Guidance
(COG)
Outdoors (°C)
Guardian Float Glass UltraClear (CE) #1 ----- Go
GLASS 1 64.9
Thickness = 8mm #2 -----
INTERLAYER 1 0.060" (1.52mm) Saflex® R Clear PVB
Clear (Middle East) #3 ----- Caution
GLASS 2 67.3
Thickness = 8mm #4 SunGuard® SN 66 T (Preliminary)

GAP 1 100% Air, 20mm (.787")

Guardian Float Glass UltraClear (CE) #5 ----- Go

GLASS 3 36.3
Thickness = 10mm #6 -----
INTERLAYER 2 0.030" (0.76 mm) Trosifol® SC+ PVB
INTERLAYER 3 0.030" (0.76 mm) Trosifol® SC+ PVB
Guardian Float Glass UltraClear (CE) #7 ----- Go
GLASS 4 35.1
Thickness = 8mm #8 -----

Total Unit (Nominal) = 2 3/16 in / 57.048 mm Slope = 90° Window Height = 1 meter
Estimated Nominal Glazing Weight: 85.22 kg/m²

Indoors

Option 2- Guardian Europe(Neutral)

Thermal
Stress
Guidance
(COG)
Outdoors (°C)
Guardian Float Glass UltraClear (CE) #1 ----- Go
GLASS 1 64.1
Thickness = 8mm #2 -----
INTERLAYER 1 0.060" (1.52mm) Saflex® R Clear PVB
Guardian Float Glass ExtraClear (CE) #3 ----- Caution
GLASS 2 66.5
Thickness = 8mm #4 SunGuard® SN 70/37 HT (CE)

GAP 1 100% Air, 20mm (.787")

Guardian Float Glass UltraClear (CE) #5 ----- Go

GLASS 3 36.0
Thickness = 10mm #6 -----
INTERLAYER 2 0.030" (0.76 mm) Trosifol® SC+ PVB
INTERLAYER 3 0.030" (0.76 mm) Trosifol® SC+ PVB
Guardian Float Glass UltraClear (CE) #7 ----- Go
GLASS 4 34.7
Thickness = 8mm #8 -----

Total Unit (Nominal) = 2 3/16 in / 57.048 mm Slope = 90° Window Height = 1 meter
Estimated Nominal Glazing Weight: 85.22 kg/m²

Indoors

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Option 3- Guardian Europe(Light Blue)

Thermal
Stress
Guidance
(COG)
Outdoors (°C)
Guardian Float Glass UltraClear (CE) #1 ----- Go
GLASS 1 61.9
Thickness = 8mm #2 -----
INTERLAYER 1 0.060" (1.52mm) Saflex® R Clear PVB
Guardian Float Glass ExtraClear (CE) #3 ----- Go
GLASS 2 63.9
Thickness = 8mm #4 SunGuard® SN 70/35 (CE)

GAP 1 100% Air, 20mm (.787")

Guardian Float Glass UltraClear (CE) #5 ----- Go

GLASS 3 35.2
Thickness = 10mm #6 -----
INTERLAYER 2 0.030" (0.76 mm) Trosifol® SC+ PVB
INTERLAYER 3 0.030" (0.76 mm) Trosifol® SC+ PVB
Guardian Float Glass UltraClear (CE) #7 ----- Go
GLASS 4 34.0
Thickness = 8mm #8 -----

Total Unit (Nominal) = 2 3/16 in / 57.048 mm Slope = 90° Window Height = 1 meter
Estimated Nominal Glazing Weight: 85.22 kg/m²

Indoors

Important Notes

The performance values shown above represent NOMINAL VALUES for the center of glass with no spacer system or framing. Slight
variations may occur due to manufacturing tolerances, point of manufacture, and type of instrumentation used to measure the optical
properties. For configurations that include non-specular (diffuse) components, performance results cannot be verified and should
only be used as a general indication of performance. For configurations which include ceramic frit coating, the actual values may
vary significantly based upon the thickness and composition of the frit. For configurations with coatings laminated facing the PVB,
there may be a noticeable color change. Guardian recommends a full size mock-up be approved. Calculations and terms in this
report are based on NFRC 2010.

Please note that the THERMAL STRESS GUIDELINE is only a rough reference to the thermal safety of a glazing. Other factors such
as the size of glass areas, shapes and patterns, glass thickness, glass damaged during shipping, handling or installation, orientation
of the building, exterior shading, overhangs/fins that reduce wind speed, and areas with high daily temperature fluctuations can all
increase the probability of thermal breakage. The results shown are not for any specific glazing installation and do not constitute a
warranty against glass breakage.

Explanation of Terms

% Transmittance Visible or Light Transmittance (τv %) is the percentage of visible light at normal incidence (90° to surface) that
is transmitted by the glass.

% Ultraviolet (UV) Transmittance (τuv %) is the percentage of ultraviolet light at normal incidence directly transmitted by the glass.
Ultraviolet Light is defined as radiant energy from the sun having a wavelength range of 300 nm to 380 nm.

% Solar Energy Direct Transmittance (τe %) is the percentage of solar energy at normal incidence directly transmitted by the
glass. Solar Energy is the radiant energy from the sun having a wavelength range of 300 nm to 2500 nm.

% Reflectance Visible Outdoors or Light Reflectance Out (ρv % out) is the percentage of visible light at normal incidence directly
reflected by the glass back outdoors.

% Reflectance Visible Indoors or Light Reflectance In (ρv % in) is the percentage of visible light at normal incidence directly
reflected by the glass back indoors.

% Solar Energy Reflected Outdoors or Solar Direct Reflectance Out (ρe % out) is the percentage of solar energy at normal
incidence directly reflected by the glass back outdoors.

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% Solar Energy Reflected Indoors or Solar Direct Reflectance In (ρe % in) is the percentage of solar energy at normal incidence
directly reflected by the glass back indoors.

Absorptance (αe %) (Solar, Visible or UV) is defined as a process in which a range of radiation is retained by a substance and
converted into heat energy. The creation of heat energy also causes the substance to emit its own radiation.

U-Factor or U-Value (UG) is the air-to-air thermal conductance of 39" high glazing and associated air films. US Standard units are
Btu/hr.ft².F. and SI / Metric units are W/m²K. Winter night values are 12.3 mph wind at -0.4°F outdoors and 69.8°F still indoor air.
Summer values are 0 sun, 6.15 mph wind at 89.6°F outdoors and 75.2°F still indoor air.

Relative Heat Gain (RHG) is the total net heat gain to the indoors due to both the air-to-air thermal conductance and the solar heat
gain. Imperial units are Btu/hr.ft². RHG = [(Summer U-Value)(89.6°F - 75.2°F) + (Shading Coefficient)(200 Btu/hr-ft²)]. Metric
units are W/m². RHG = [(Summer U-Value)(32°C - 24°C) + (Shading Coef.)(631 W/m²)]

Shading Coefficient (SC) is the fraction of solar heat, direct (300 to 2500 nm) plus indirect (5 to 40 µm), transferred indoors through
the glass. For reference, 1/8" (3.1 mm) clear glass has a value of 1.00 (SC is an older term being replaced by the SHGC).

Solar Heat Gain Coefficient (SHGC) is the fraction of solar energy incident on the glazing that is transferred indoors both directly
and indirectly through the glazing. The direct gain portion equals the direct solar transmittance, while the indirect is the fraction
of the solar energy absorbed to the energy reradiated and convected indoors. No heat gain from warmer outdoor air is included.
SHGC = (Direct Solar Trans) + {[(Indirect Solar Heat Gain) - (Summer U-Value)(89.6°F - 75.2°F)] / (248.209 Btu/hr-ft²)}

Light-to-Solar Gain (LSG) is the ratio of visible light gain to solar gain. LSG = (Visible Transmittance) / (SHGC)

Color Rendering Index in transmission, D65 (Ra) is the change in color of an object as a result of the light being transmitted by
the glass.

Weighted Sound Reduction Index (Rw) is a single-number quantity which characterizes the airborne sound insulation of a material
or building element over a range of frequencies.

Sound Transmission Class (STC) is a single-number quantity which characterizes the airborne sound insulation of a material or
building element over a range of frequencies.

Disclaimer
This performance analysis is provided for the limited purpose of assisting the user in evaluating the performance of the glass
products identified on this report. Spectral data for products manufactured by Guardian reflect nominal values derived from typical
production samples. Spectral data for products not manufactured by Guardian were derived from the LBNL International Glazing
Database and have not been independently verified by Guardian. The values calculated by this tool are generated according to
established engineering practices and applicable calculation standards. Many factors may affect glass performance, including glass
size, building orientation, shading, wind speed, type of installation, and others. The applicability and results of the analysis are
directly related to user inputs and any changes in actual conditions can have a significant effect on the results. It is possible to create
many different glazing types and glass make-ups using this tool. Guardian makes no guarantee that any glazing modeled by the tool
is available from Guardian or any other manufacturer. The user has the responsibility to check with the manufacturer regarding
availability of any glass type or make-up. While Guardian has made a good faith effort to verify the reliability of this tool, it may
contain unknown programming errors that could result in incorrect results. The user assumes all risk relating to the results provided
by the tool and is solely responsible for selection of appropriate products for the user's application. GUARDIAN MAKES NO
EXPRESS OR IMPLIED WARRANTY OF ANY KIND WITH RESPECT TO THE PERFORMANCE CALCULATOR. THERE ARE NO
WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT
TO THE PERFORMANCE CALCULATOR AND NO WARRANTY SHALL BE IMPLIED BY OPERATION OF LAW OR OTHERWISE.
IN NO EVENT SHALL GUARDIAN BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL OR INCIDENTAL
DAMAGES OF ANY KIND RELATING TO OR RESULTING FROM USE OF THE PERFORMANCE CALCULATOR.

Program Version: 4.1.0.6110

Database Version: 20171130

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