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Reconfigured Oculus for Nasher Sculpture Center - Concept Feasibility Study Museum TowerRWDI # 1200597

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Museum TowerDallas, Texas

Concept Feasibility Study Reconf igu red OculusRWDI # 1200597April 19th, 2013

SUBMITTED TO

Museum Tower LP

SUBMITTED BY

Rowan Williams Davies & Irwin Inc.

650 Woodlawn Road West

Guelph, Ontario, Canada N1K 1B8

519.823.1311

Joel Good, M.A.Sc., P.Eng.

Specialist Building Performance

[email protected]

Ray Sinclair, Ph.D.

Project Director - Principal

[email protected]

Derek R. Kelly, M.Eng, P.Eng.

Project Manager - Principal

[email protected]
mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]


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Page 2


page

Introduction . . . . 3

Oculus Geometries . . . . 6

Test Methodology . . . . 8

Simulations . . . . 11

Simulation Results . . . . 13

Study of Dallas Sky Cover . . . 24

Study of Reconfigured Oculi Views . . 30

Summary . . . . . 35

Appendix A Occuli Walkability . . . 39

Appendix B Qualitative Model Check of Capture of Reflected

Light Spot . . . . 40

Appendix C Comparison of Reconfigured Oculi with Existing

Oculi pre (without) Museum Tower. . 42

Appendix D Comparison of Reconfigured Oculi with Existing

Oculi with Museum Tower (current scenario) . 57

Table of Contents


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Renderings of the Museum Tower in Dallas, TX

(courtesy of Johnson Fain)

Overview:

The Museum Tower (MT) is a 43-story structure

currently under construction in the arts district of

Dallas, Texas.

The western glass faade has been observed to

intermittently reflect afternoon sunlight onto the

Nasher Sculpture Center (NSC), located south of thetower.

The Museum Tower design team have explored a

number of mitigation measures to eliminate the

reflections penetrating the NSC, including

modifications to the Museum Tower itself, alterations

to the Nasher Sculpture Center, and intercepting

structures in the space between.

Introduction


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Reflected Light Issue:

Reflections occur on the NSC rooftop for all days of the

year.

The reflections begin around 2:00 pm and continue to

near sunset. No reflections occur before this time.

The reflections are scattered and intermittent (seeimage to right) moving from the east to west ends of

the NSC.

At any one time no more than 15% of the roofs oculi

are in reflection.

The Dallas sky is generally clear, as the mean sky cover

throughout the year is approximately 35%.

Photo of NSC Rooftop in Reflection (July 12th, approx. 4pm)

Photo of Reflections inside NSC (May 16, 2012, 3:40pm)

Introduction


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Concept Feasibility Study:

RWDI has performed computer modeling to

better understand the characteristics of these

reflections and test potential mitigation

strategies.

This report outlines the concept feasibility

testing of one such mitigation strategy to

eliminate tower reflections from penetrating

the NSC galleries: a reconfigured design of the

shading oculi on the NSC rooftop.

Results from Previous Reflection Studies:

Reflecting Glazing Units on MT Western Facade (left) and Reflection

Range for Oct 4th from 12:00 to 17:00 (30 min intervals)

Introduction


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Existing NSC Oculus

current condition

existing oculus is designed to block direct sunlight

from all sun angles

facing north, the oculus allows reflected light from

the Museum Tower to penetrate into the galleriesbelow

Existing oculus in plan (t-l), isometric (t-r), front (b-l) and

side (b-r) views

Oculus Geometries

Photos of existing oculi arrays on NSC Rooftop


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Reconfigured Oculus (new concept)

rotated 45 degrees west of north,

extension designed to block direct light from MT

and direct sunlight for all NSC rooftop locations

Reconfigured oculus in plan (t-l), isometric (t-r),

front (b-l) and side (b-r) views

120mm

(4.

7)

120 mm(4.7)

Oculus Geometries

Museum Tower

in plan view

Projected cone

of vision from

sample oculus

Sun path

NSC rooftop

in plan view

Oculi Projection Defines Edge of Reconfigured Extension


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Museum Tower model:

RWDI has created a computer model of the MT

using Autodesk Ecotect based on a 3d Revit model

provided by the MT design team.

Ecotect is a a powerful building modeling software

used for solar analysis and reflection studies. Ecotect uses the powerful ray-tracing engine of

Radiance to model the characteristics of sunlight

over complex geometries.

The simulations use the CIE sky models (clear and

overcast conditions) which consider solar position

based on the simulation date and time.

Model Renderings of the Museum Tower (Revit top

left, Ecotect top right) and Site Plan (bottom)

Test Methodology


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Surrounding oculi (closed)

and rooftop included forreflection

Test oculus (open to

below to admit light)

Museum

Tower

NSC Rooftop

(center bay)NSC & Rooftop Oculi:

The rooftop of the NSC was added to the model

based on design drawings provided by the NSC

design team.

Not practical during the initial concept development

to model daylighting over entire NSC roof which iscovered with thousands of oculi.

A simplified model of a single open oculus was used

to assess the performance of the reconfigured oculi

compared to the original design.

The test oculus was surrounded by five oculi to

capture light potentially reflected from the outer

shell of the adjacent oculi.

Test Methodology

Ecotect Renderings of NSC Rooftop and Test Oculus


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Test Methodology

Light receptor grid

(4.7x4.7, 1 below oculi)

Roof section removed to

show light receptor grid

Reconfigured oculi rotated

45 west of north

Description of Collection Grid:

A collection grid was placed under the test

oculus

Collection grid is fine enough to detect

potential for direct light penetrations, if any,

and large enough to detect all diffuse lightpassing through the test oculus

Light levels were calculated for each grid point.

Appendix A - illustrates the model prediction

of the size and intensity of the reflected light

spot problem. Also presented is a comparison

of a medium and fine refinement of the

collection grid. The results presented supportthe use of the medium resolution grid. Ecotect Renderings of Test Oculus and Grid


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Predicted illuminance levels for a single oculus on a light receptor grid

were calculated for a number of test cases:

Oculus scenarios:

existing without Museum Tower

existing with Musem Tower

reconfigured with Museum Tower

Times of year:

summer solstice - June 21st (10am, 12pm, 2pm, 4pm, 6pm)

spring/Fall equinox Mar 21st (3pm & 10am, 12pm, 2pm, 4pm, 6pm)

winter solstice - December 21st (2:30pm & 10am, 12pm, 4pm)

Sky conditions:

sunny, in direct reflection (i.e. reflection from MT falls directly on test oculus)

sunny, not in direct reflection from MT

overcast (diffuse light only)

Simulations


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Presentation of results:

Peak illuminance level (lux) recorded on

light receptor grid (lux = lumen / m2).

Total luminous flux (lumens) over entire

grid area, hereafter referred to as total

light.

Notes:

The predicted illuminance level shown for

each grid cell (colored rectangular patch) is

calculated as the average lux level based on

the values of the four corner points of the

cell. Therefore, the results show smoothed

values over each grid cell and cannot

resolve peaks within a cell. This

methodology is valid for comparing one

scenario to another.

Fisheye view inside

test box, above grid

Underside

of oculi

Daylight falling

on grid

Sample oculi (wireframe)

included for locational

reference

Light receptor grid(4.7x4.7, 1 below oculi)

Peak illuminance

value on grid

300 lux

Simulations


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Unobstructed Rooftop Illuminance Levels above Ocular Roof

Predicted rooftop illuminance levels above the ocular roof without obstruction or shading. These light levels

can be compared to the light levels predicted to transmit through the test oculus, as presented in the

computer model results in the following slides.

Results

March 21st June 21st December 21st

Clear Sky

(lux)

Overcast Sky

(lux)

Clear Sky

(lux)

Overcast Sky

(lux)

Clear Sky

(lux)

Overcast Sky

(lux)

10:00 am 55,100 11,600 70,000 15,000 31,200 7,400

12:00 pm 71,400 14,700 89,000 17,000 45,300 9,900

2:00 pm 66,900 13,800 80,900 16,400 39,300 8,800

4:00 pm 42,300 9,300 57,000 12,000 14,200 4,400

6:00 pm 6,000 3,000 21,000 6,000 n/an/a


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19,340 lux

235 lux

Predicted transmitted light levels through a

single oculus

June 21st 4:00pm

Clear sky, sunny, in reflection

Existing Oculus (without MT)

Peak = 235 lux

Total light = 40 lumens

Existing Oculus (with MT reflection)

Peak = 19,340 lux (direct reflection)


Reconfigured Oculus

Peak = 430 lux


Percentage of existing (w/o MT) = 210%

Existing Oculus

(with MT reflection)

shows problem light spot!

Existing Oculus(without MT)

Reconfigured

Oculus430 lux

Results


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single oculus

June 21st 4:00pm

Cloudy overcast sky


Peak = 185 lux



Peak = 155 lux


Reconfigured Oculus

Peak = 130 lux



Existing Oculus (with

MT reflection)


Reconfigured

Oculus

Results

185 lux

155 lux

130 lux


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single oculus

Mar/Sep 21st 3:00pm



Peak = 200 lux





Reconfigured Oculus

Peak = 350 lux




Reconfigured

Oculus

Results

200 lux

18,300 lux

350 lux

Existing Oculus




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single oculus

Mar/Sep 21st 3:00pm

Clear sky, sunny, not in reflection


Peak = 200 lux



Peak = 190 lux


Reconfigured Oculus

Peak = 310 lux




MT reflection)


Reconfigured

Oculus

Results

200 lux

190 lux

310 lux


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single oculus

Mar/Sep 21st 3:00pm

Cloudy overcast sky


Peak = 210 lux



Peak = 200 lux


Reconfigured Oculus

Peak = 100 lux




MT reflection)


Reconfigured

Oculus

Results

210 lux

200 lux

110 lux


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single oculus

Dec 21st 2:30pm



Peak = 100 lux





Reconfigured Oculus

Peak = 190 lux



Existing Oculus

(without MT)

Reconfigured

Oculus

Results

100 lux

10,500 lux

190 lux

Existing Oculus




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single oculus

Dec 21st 2:30pm

Clear sky, sunny, not in reflection


Peak = 100 lux



Peak = 80 lux


Reconfigured Oculus

Peak = 170 lux




MT reflection)

Existing Oculus

(without MT)

Reconfigured

Oculus

Results

100 lux

80 lux

170 lux


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single oculus

Dec 21st 2:30pm

Cloudy overcast sky


Peak = 115 lux



Peak = 100 lux


Reconfigured Oculus

Peak = 60 lux




MT reflection)

Existing Oculus

(without MT)

Reconfigured

Oculus

Results

115 lux

100 lux

60 lux


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Results

Predicted diurnal transmitted light levels through a single oculus

Reconfigured vs. Existing (pre Museum Tower)

R fi d O l f N h S l t C t C t F ibilit St d


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Question?

How often are outdoor light conditions beneficial for

the illumination of the NSC galleries with the

reconfigured oculus, as compared to the existing

oculus?

Approach to answer?

Analyze recorded meteorological data to determine the percentage of

hours in which:

high outdoor light levels occur

clear sky conditions occur

Study of Dallas Sky Conditions



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Reported Local Meteorological Data

Examined hourly reported cloud cover and solar radiation data at

surrounding meteorological stations:

o Dallas Fort Worth Airport

o Arlington Airport

o Love Field Airport

o Executive Airport, 10 miles SW of Dallas

o Cedar Hill Station, 18 miles SW of Dallas

Our analysis identified inconsistencies in the reported cloud cover data. This

was more apparent for DFW Airport data, for example. We selected

Executive Airport as the representative data set.

The only station reporting measured total solar radiation is Cedar Hill

Station.

Period of data: Dec 2003 to Jan 2013




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Reported Local Meteorological Data

Cloud Cover Data is reported in tenths coverage of the sky, at levels of

0.0, 0.3, 0.5, 0.9, 1.0.

Clear Sky: 0.0, 0.3

Overcast: 0.9, 1.0

Measured total solar radiation W/m

2

was converted to illuminance bymultiplying by 93 lm/W (Ref. #1).

Actual measurements include effects of: day of year; time of day; and

sky condition/cloud cover.

Data shows:o Light levels are moderate to low after 5 pm on most days of the

year

o Winter light levels are generally lower than the rest of the year

Ref #1: Maximum spectral luminous efficiency of white light, Thomas Murphy, Journal of Applied Physics 111, 104909 (2012)


Reconfigured Oculus for Nasher Sculpture Center Concept Feasibility Study M T


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Percent of time of High Outdoor IlluminanceDec-Feb: Low 30,000 lux

Mar-Nov: Low 40,000 lux

60%

68%59%

85%


Reconfigured Oculus for Nasher Sculpture Center Concept Feasibility Study M se m To er


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Percent of time ofClear Sky Conditions

68%

58%63%

75%


Reconfigured Oculus for Nasher Sculpture Center - Concept Feasibility Study Museum Tower


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Conclusions about Outdoor Light Conditions:

1. Outdoor Illuminance Analysis: At least 59% to 85% of the time after the 11am until late

afternoon outdoor light levels are high (i.e., >30,000 lux in the winter, >40,000 lux in

other seasons).

2. Cloud Cover Analysis: At least 58% to 75% of the time after the 11am until late afternoonthe sky is relatively clear.

3. Therefore, frequent clear skies and frequent high outdoor light levels should be

conducive to similar or better natural light illumination of the galleries with the

reconfigured oculus, as compared to the existing oculus.




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Background

Previous work by the design team has outlined a

concept for a reconfigured ocular roof for the Nasher

Sculpture Center (NSC) to mitigate reflection issues

from Museum Tower (MT). It is proposed that the

oculi be both redesigned and rotated. It was

determined that a rotation angle of 45 degrees west

of north would effectively shade all reflections from

the MT as well as direct light from the sun.

Question?

By rotating the oculi 45 degrees west of north:

1) Will any current or foreseeably planned buildings

be visible through the gallerys altered view of

the Dallas sky?

2) If so, would the gallery be susceptible to

reflections from these buildings?

Museum Tower

in plan view

Projected cone

of vision from

sample oculus

Sun path

NSC rooftop

in plan view

Oculi Projection Defines Edge of Reconfigured Extension

Existing (left) and Reconfigured (right) Oculi

Study of Reconfigured Oculi Views



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Surrounding Buildings

A number of buildings are

currently built to the NW of the

NSC

Building heights in this direction

are limited due to Love Field

airstrip to the NW. Existing building positions and

heights were estimated from

online map data (Google Earth).

Building elevations were

attained for 1900 McKinney,

ensuring an accurate depictionof this building.

An empty lot was identified NW

of Museum Tower as being a

potential site for future

development.

Plan view of surrounding buildings to NW of NSC




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Surrounding Buildings in View?

A projection was created from a single oculus

at the center of the NSC rooftop.

In the image to the right, the red transparent

surface outlines the bottom limit of the view

through the oculus. The arc represents an

approximation of the true shape that the

back of a reconfigured oculi will have on theprojection (line of sight).

Any building intercepted by the red surface is

predicted to be in view of the reconfigured

oculus.

The only building that would be in view is the

top few floors of the building at 1900McKinney (shown here in turquoise blue).

Projection of view through reconfigured oculi (red) above which

(tourquoise) buildings would be visible from inside gallery


It is also predicted that the limiting height at which a building can be built on the empty lot NW of

MT (see yellow dot) is 70 m (230 ft). A building taller than this would potentially be in view from the

NSC gallery through the roof with the reconfigured oculi.



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Will sunlight reflect from 1900 McKinney

onto the NSC?

Reflections (red) from SE faade of 1900 McKinney on December 21st.

Reflections (red) from SE faade of 1900 McKinney on March 21st or

September 21st.

On the previous slide, the upper floors of

1900 McKinney were determined to be in

view of the reconfigured NSC oculus.

A computer model reflection study wasperformed to determine if SE faade would

ever reflect light directly on to the NSC

rooftop.

Images to the right (and the next page)

show the predicted daily range of

reflections (red) on clear-sky days from the

SE faade for the equinox and two solstices

relative to the NSC rooftop (yellow box).

Study of Reconfigured Oculi View



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Reflections (red) from SE facade of 1900 McKinney on June 21st.

The results show that the SE faade of 1900

McKinney will not reflect light directly on

the NSC rooftop at any time of the year.

Study of Reconfigured Oculi View

Will sunlight reflect from 1900 McKinney

onto the NSC?

Will sunlight reflect from the Proposed

Future Building Site?

As reported earlier, the limiting height at

which a building can be built on the proposed

building site NW of MT (green box) is 70 m(230 ft).

A 70 m building would not reflect on the roof

of the NSC. Any height in excess of 70 m

would require additional reflectivity studies.

View from Reconfigured Oculus (red) towards Proposed Future

Building Site



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Summary

Existing Oculus with Museum Tower

The model results agree with real-world observations:

Blocks all direct light from sun.

Diffuse light collected from clear sky and some direct light

bounces off of the oculus cone walls.

Allows intermittent, afternoon reflections from Museum

Tower to penetrate into the galleries.

Reflected light through an oculus occur as bright spot with

high illuminance of up to 20,000 lux on sample summer

day.



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Reconfigured Oculus:

Blocks all direct light from sun and reflected light from MuseumTower.

Restores views to the open Dallas sky, without a view of Museum

Tower.

Top floors of 1900 McKinney building will be in reconfigured view

from NSC, reflection studies indicate that it will not reflect daylight

into the galleries.

Rotation of oculus to the west allows for exposure to a brighter

afternoon sky compared to due north orientation.

Reconfigured oculus is able to capture more direct light on clear,

sunny days and the cone design effectively scatters diffuse light

below oculi.

For a clear morning sky and any overcast sky condition the

reconfigured oculus provides less light than the existing oculus priorto MT. Computer model estimates show a reduction of up to 50%. At

these times ambient light levels are relatively low, therefore artificial

light in the galleries would render this difference unnoticeable to the

human eye.

Summary

The overall result is increased overall daylight levels during sunny, clear sky conditions while still maintaining

peak illuminance levels similar to the existing design.



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Conclusions about Outdoor Light Conditions:

1. Outdoor Illuminance Analysis: At least 59% to 85% of the time after the 11am until late

afternoon outdoor light levels are high (i.e., >30,000 lux in the winter, >40,000 lux in

other seasons).

2. Cloud Cover Analysis: At least 58% to 75% of the time after the 11am until late afternoonthe sky is relatively clear.

3. Therefore, frequent clear skies and frequent high outdoor light levels should be

conducive to similar or better natural light illumination of the galleries with the

reconfigured oculus, as compared to the existing oculus.

Summary



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Appendices:

Appendix A: Oculi Walkability

Appendix B: Qualitative Model Check of Capture of Reflected Light Spot

Appendix C: Modeling of diurnal cycle for March 21st, June 21st, & Dec 21st:

Comparison of Reconfigured Oculi with Existing Oculi pre(without) Museum Tower

Appendix D: Modeling of diurnal cycle for March 21st, June 21st, & Dec 21st:

Comparison of Reconfigured Oculi with Existing Oculi with

Museum Tower (current scenario)



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Walkability

Currently, the NSC oculi are durable enough that they can

be walked on to access the rooftop.

The extended geometry of the reconfigured oculus will

be need to fabricated in a manner that is equally durable

so as not to alter any accessibility to the NSC rooftop.

Oculi wall thickness as well as potential requirements for

additional fillets or struts between oculi will be

considered to ensure adequate stiffness to handle

vertical and lateral loads.

Existing (top) and Reconfigured

(bottom) oculi

Appendix A: Oculi Walkability



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Size & Shape of reflection through oculus:

Check computer model with a finer light collection grid below the Existing Oculus to confirm that

size/shape of high intensity reflected light spot is reasonable in size and light level.

Appendix B: Qualitative Model Check of Capture of Reflected Light Spot



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single oculus

June 21st 4:00pm


Dense grid to better see reflection shape

Existing Oculus (with MT)

Grid: 50 x 50

Cell: approx 1.1 x 1.1

Existing Oculus (with MT)

Grid: 150 x 150

Cell: approx 0.3 x 0.3

1

19,400 lux

Falsecolor image (0 to 20,000 lux scale)

~ 4

~ 2

19,340 lux



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Appendix C: Modeling of diurnal cycle for March 21st, June 21st, & Dec 21st:

Comparison of Reconfigured Oculi with Existing Oculi pre

(without) Museum Tower

Diurnal simulations to:

Verify that direct light is being blocked by reconfigured oculi at other times on Jun 21 (longest day

with highest angles of incidence)

Check performance of reconfigured oculi for diurnal cases for multiple times of year (summer,winter, spring) for both overcast and clear skies.

Compare reconfigured oculi performance to baseline case with existing NSC oculi before Museum

Tower was built (i.e. no MT obstruction or reflection).



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Predicted transmitted light levels through a single oculus

Mar 21st 10:00 am

Reconfigured Oculus

100 lux120 lux


Percent of existing (w/o MT) = 95%



Reconfigured Oculus

Clear, sunny sky Cloudy, overcast sky

Unobstructed: ~55,000 lux (direct)

Study oculus not in direct reflectionUnobstructed: ~11,600 lux

Existing Oculus

(without MT)

190 lux


Existing Oculus

(without MT)

180 lux




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Mar 21st 12:00 pm

Existing Oculus

(without MT)

Reconfigured Oculus Existing Oculus

(without MT)

230 lux170 lux

160 lux240 lux

Total light = 33 lumens Total light = 20 lumens


Total light = 22 lumensTotal light = 52 lumens

Percent ofexisting (w/o MT) = 160%

Reconfigured Oculus






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Mar 21st 2:00 pm

Existing Oculus

(without MT)


(without MT)

240 lux

210 lux140 lux230 lux





Reconfigured Oculus






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Mar 21st 4:00 pm

Existing Oculus

(without MT)


(without MT)

150 lux170 lux

100 lux170 lux



Total light =14 lumensTotal light = 38 lumens


Reconfigured Oculus






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Mar 21st 6:00 pm

Existing Oculus

(without MT)


(without MT)

50 lux 50 lux20 lux30 lux





Reconfigured Oculus






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Existing Oculus

(without MT)

Reconfigured Oculus


Existing Oculus

(without MT)

320 lux 140 lux 80 lux270 lux






June 21st 10:00 am

Reconfigured Oculus





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Existing Oculus

(without MT)

Reconfigured Oculus Existing Oculus(without MT)

430 lux 230 lux160 lux

280 lux






June 21st 12:00 pm

Reconfigured Oculus






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June 21st 2:00 pm

Existing Oculus

(without MT)Reconfigured Oculus Existing Oculus

(without MT)

360 lux380 lux 160 lux260 lux





Reconfigured Oculus






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Existing Oculus

(without MT )


(without MT)







June 21st 4:00 pm

Reconfigured Oculus






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June 21st 6:00 pm

Existing Oculus

(without MT)Reconfigured Oculus Existing Oculus

(without MT)






Reconfigured Oculus






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Dec 21st 10:00 am

Existing Oculus

(without MT)


(without MT)






Reconfigured Oculus






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Dec 21st 12:00 pm

Existing Oculus

(without MT)


(without MT)

160 lux160 lux

100 lux160 lux





Reconfigured Oculus






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Dec 21st 2:30 pm

Existing Oculus

(without MT)


(without MT)

130 lux

170 lux

60 lux150 lux





Reconfigured Oculus






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Dec 21st 4:00 pm

Existing Oculus

(without MT)


(without MT)

60 lux100 lux 50 lux

80 lux





Reconfigured Oculus






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Appendix D: Modeling of diurnal cycle for March 21st, June 21st, & Dec 21st:

Comparison of Reconfigured Oculi with Existing Oculi with

Museum Tower (current scenario)

Diurnal simulations to:

Verify that direct light is being blocked by reconfigured oculi at other times on Jun 21 (longest day

with highest angles of incidence)

Check performance of reconfigured oculi for diurnal cases for multiple times of year (summer,

winter, spring) for both overcast and clear skies.

Compare reconfigured oculi performance to baseline case representing current scenario, existing

NSC oculi with Museum Tower (i.e. MT provides obstruction and reflection).



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Mar 21st 10:00 am


MT)

Reconfigured Oculus Existing Oculus (with

MT)


220 lux


Percent of existing (w/ MT) = 40%



Reconfigured Oculus






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Mar 21st 12:00 pm


MT)


MT)





Percent ofexisting (w/ MT) = 105%

Reconfigured Oculus






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Mar 21st 2:00 pm


MT)


MT)

260 lux

210 lux140 lux

260 lux





Reconfigured Oculus






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Mar 21st 4:00 pm


MT)


MT)

140 lux

170 lux100 lux

180 lux





Reconfigured Oculus






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Mar 21st 6:00 pm


MT)


MT)

60 lux

50 lux20 lux40 lux





Reconfigured Oculus






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MT)

Reconfigured Oculus



MT)

315 lux 140 lux 80 lux190 lux






June 21st 10:00 am

Reconfigured Oculus





64/71

Page 64



MT)


MT)

270 lux230 lux

160 lux220 lux






June 21st 12:00 pm

Reconfigured Oculus






65/71

Page 65



June 21st 2:00 pm


MT)


MT)

360 lux






Reconfigured Oculus






66/71

Page 66



MT )

Reconfigured Oculus Existing Oculus (withMT)


155 lux






June 21st 4:00 pm

Reconfigured Oculus






67/71

Page 67



June 21st 6:00 pm


MT)



90 lux





Reconfigured Oculus






68/71

Page 68



Dec 21st 10:00 am


MT)


110 lux70 lux

70 lux

140 lux





Reconfigured Oculus






69/71

Page 69



Dec 21st 12:00 pm


MT)


260 lux

160 lux100 lux

190 lux





Reconfigured Oculus






70/71

Page 70



Dec 21st 2:30 pm


MT)


80 lux

170 lux

60 lux100 lux





Reconfigured Oculus






71/71


Dec 21st 4:00 pm


MT)


100 lux

100 lux 50 lux

80 lux





Reconfigured Oculus




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