dave maino lighting/electrical dr. mistrick tces incline village, … · 2005-10-22 · ceiling...

Dave Maino . nameLighting/Electrical . option

Dr. Mistrick . advisorTCES . building

Incline Village, NV . location10/06/05 . date

Technical Report 1 . title

This report, along with supplemental information, can be found at “P:\ae 481\tech1”Full report available for download from the web at “http://www.arche.psu.edu/thesis/eportfolio/current/portfolios/jdm341/”

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Executive Summary:

The following is a technical report concerning the current conditions of the lighting system within the Tahoe Center for Environmental Sciences (TCES). Four spaces were analyzed: the lobby/prefunction area, the case study classroom, the chemistry lab, and the exterior facade. AGI 32 v1.8 was used to determine existing illuminance levels and examine rough images of what the space might look like were it built today. Information for materials and their reflectances was obtained from the specification sections and the drawings, and light loss factors for all light fixtures were obtained using standard IES procedures.

The existing conditions were found to be adequate in most cases. ASHRAE 90.1 was only exceeded in the chemistry lab, and the IES recommended illuminance levels were adhered to fairly well. The only exception being the chemistry lab, where it was overlit. Although this overlighting can be attributed to the fine and sometimes dangerous tasks performed in chemistry labs, a similar level of light could possibly be achieved using a different lighting approach that meets ASHRAE 90.1 requirements.

Overall, it was determined that the lighting system in TCES needs to be versatile enough to handle multiple uses. Many of the spaces serve different purposes and as such will need to be lit in such a way that they can be functional in a variety of different situations. This must be done with energy efficient design in mind since TCES is currently slated to be a LEED platinum project. Some methods that were found to possibly reduce energy were switching to more efficient sources (linear fluorescent instead of compact fluorescent) and bringing light directly to where it is needed to avoid over lighting a space (such as task lighting in the case study classroom. Furthermore, it was determined that several of the spaces would benefit from daylight studies to see if a further reduction in energy use can be achieved.

From the analysis, a broader understanding of how the current lighting system within TCES operates, where it has its strengths and where it can use improvement was gained. Using the design criteria generated, along with the analysis of each individual space, a different and hopefully superior lighting system can be designed to meet the tenants needs.

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Lobby/Prefunction Area

Floor Plan and Lighting Layout:First Floor:

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maino

Note

"Dimensions?" space dimensions for each space can be determined using the scale provided along with the corresponding plan


Floor Plan and Lighting Layout:Second Floor:

Third Floor:

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Floor Plan and Lighting Layout:Sections:

Looking North Looking East

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Materials:Walls: Painted Gyp. Bd. (Eggshell)

Reflectance of 65%

Columns: Exposed ConcreteReflectance of 40%

Ceiling: Exposed ConcreteReflectance of 40%

Wall Base: Molded Wood Base Reflectance of 30%

Floor: Colored Concrete with SealantReflectance of 20%

Glazing:

To Exterior: (2) Panes, Argon Filled – construction as followsIndoor Lite:

Ultra-Clear (Low-Iron) Float GlassTransmittance of 91%Reflectance of 8%Solar Heat Gain Coefficient of .87

Outdoor Lite:Ultra-Clear (Low-Iron) Float GlassTransmittance of 91%Reflectance of 8%Solar Heat Gain Coefficient of .87

To Interior: 1/4” Monolithic Glass (Safety Glazing)Amber TintTransmittance of 65%Reflectance of 4%

To Interior: 1/4” Tempered GlassTransmittance of 91%Reflectance of 8%

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ARG

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maino

Note

"What is the combination?" added images depicting how glazing is constructed

maino

Note

"Lightwell?" lightwell glazing construction follows the "to exterior" construction


Controls:Occupancy Sensors:

U3 = Wattstopper WT-2200Ceiling mounted ultrasonic motion detector2200 square feet, 360 degree coverage

U4 = Wattstopper WT-2250Ceiling mounted ultrasonic motion detector90 linear feet, 360 degree coverage

Control Systems:Lutron Grafik Eye GRX-3106A WH and NT GRX-45 wall stations

Operating Conditions:Fixtures controlled by LCP-1 during normal building hours. After the clock in the control panel times out, the fixtures on circuits 11, 13, 15, 19 and 21 are controlled by occupancy sensors. Lightwell fixtures (2nd and 3rd floor plans, circuit 20) are controlled by LCP-1 and are scheduled to turn off at 12am every day. A manual override for the exhibit space track fixtures (1st floor plan, circuit 17) is provided with a 120 minute time delay. Public corridors on the second on third floor adjacent to the light well follow the normal on/off schedule and do not contain a manual override option.

Normal business hours are here defined as:Mon-Fri 8am-10pmSat-Sun 8am-6pm

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Existing Lighting Conditions:

Fixture ScheduleLabel Description Lamping Voltage Total Watts Ballast Quantity

T2 Wall Mounted Spot (1) M70PAR38/830 120 94 IE 4

T3 Wall Mounted Spot (1) M35PAR30L/830 120 41 IE 4

T4 Track mounted accent light

(2) CFL24DL/835 120 52 E 10

W2 Rectangular wall sconce

(2) CFL18DD/835 120 38 E 13

W5 Wall Mounted Flood (1) F32T8/830 120 35 E 4

S9 Surface mounted circular area light

(3) CFL26DT/835 120 87 E 5

S10 Surface mounted circular area light

(4) CFL26DT/835 120 116 E 4

P6 Suspended low-bay lensed pendant

(1) M100/830 120 129 E 2

Ballast Types:E: ElectronicIE: Integral Electronic

Existing Power Density:

[(94W)(4)+(41W)(4)+(52W)(10)+(38W)(13)+(35W)(4)+(87W)(5)+(116W)(4)+(129W)(2)]2915sf

= .978 W/sf

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LLF ScheduleLabel Cat. Room Clean Interval BF LLD RSDD LDD LLF

T2 IV Clean 12 months 1 1* .95 .89 .85

T3 IV Clean 12 months 1 1* .95 .89 .85

T4 IV Clean 12 months .95 1* .95 .89 .81

W2 IV Clean 12 months .95 1* .95 .89 .81

W5 IV Clean 12 months .95 1* .95 .89 .81

S9 V Clean 12 months .95 1* .95 .87 .79

S10 V Clean 12 months .95 1* .95 .87 .79

P6 VI Clean 12 months 1 1* .95 .87 .83

* Mean lumens were used in calculations as opposed to initial lumens, so lamp lumen depreciation values are 1

Task Descriptions:

The Lobby area serves multiple purposes. It's main function will be as the primary circulation space for the building. Secondary functions will include being an exhibit area to display research taking place in the building, a prefunction space for people to gather before and after events such as lectures and a greeting and reception area for visitors to the building. Both horizontal and vertical illuminances must be carefully considered since horizontal illuminance is critical to circulation areas and vertical illuminance is critical to facial rendering requirements of a gathering area and display lighting of an exhibit area. Tasks will include walking throughout the space, facial recognition for the receptionist area as well as throughout the space and looking at the various exhibits on display.

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Design Criteria:

Daylight Integration:Due to the light well present in the center of the lobby, daylight integration must

be considered. The well provides an opportunity to bring daylight into the space, but must be approached cautiously so as to avoid bringing direct sunlight inside the building. Dimming or switching are two possibilities to controlling the light levels in order to integrate with the daylight present.

Green Design:Since TCES is designed to be a LEED platinum project, energy efficient design

and general “green design” is of utmost importance. The power density is already low, but could be lower with the successful integration of daylight and the possible use of more efficient light sources such as linear fluorescents instead of compact fluorescents.

Fixture Appearance:With the exposed concrete slab, there is no possibility of using recessed

fixtures, so fixtures must be chosen that will compliment the architecture and will not detract from it. Finding a unifying theme for all fixtures chosen (such as shape or style) may help the fixtures to not detract from the space, and to not distract the users.

Reflected Glare:The main source of glare in the lobby would be from the light well. Because the

skylights are so high up, it may not be a problem as far as direct glare is concerned, but because of the use of glazing in the solarium, some reflected light may become a problem. This reflected light may even pose a safety risk to those using the stairs within the solarium.

Accent Lighting:As this will be a space to display various research projects, accent lighting is

essential. Because the exhibits will be changing fairly frequently, flexibility within the accent lighting system is key. This flexibility may be achieved through a track lighting system, or perhaps through other more innovative means. The lightwell should not interfere too much with accent lighting as the areas to be accented are between 10 and 20 feet away from the lightwell and the ceilings are only about 11 feet high.

(cont'd on next page)

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maino

Note

"Check solar penetration in software. It is often preferred in a circulation space." additional studies will be done during my design phase, as mentioned later in the document.

maino

Comment on Text

"Space height? Tough with Daylight?"


Design Criteria (cont'd):

Highlighting:People will need visual cues as to where to go when they enter the building. As

such, the receptionist desk will be a highlighted point, as well as the stairwell. Additional layers of light may be used to lead people to various rooms and displays, but the visual hierarchy will first be composed of the receptionist and stairwell.

Illuminance Criteria:Horizontal:

Reception: 20fc calculated (IES 10fc)Gathering: 21fc calculated (IES 10fc)Circulation: 21fc calculated (IES 5fc)

Vertical:Reception: 13fc calculated (IES 5fc)Gathering: 8fc calculated (IES 5fc)Illuminated Walls: 23fc calculated (IES 30fc)

Importance and Hierarchy:Vertical and horizontal illuminances must be maintained in order to

accomplish the tasks that the space requires. Horizontal illuminances must also be met to meet local egress code requirements for light levels. Right now, everything is fairly flat, with the walls being the main accent points. The hierarchy of objects in the space will need to be looked at and the illuminances and luminances varied accordingly so that objects will be noticed in order of importance. Since the space will also have various functions, flexibility in terms of the lighting system will be important as well. This flexibility may lead to the ability to dim or separately control certain lights that are not needed for certain functions such as the track lights and the lights near the receptionist desk.

Power Density:ASHRAE 90.1 allowance (school/university lobby):1.8 W/sf

An additional 1W/sf can be added for decorative wall sconces and highlighting exhibits, but will most likely not be used.

Existing: .978 W/sf OK

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maino

Highlight

previously it was unclear what these numbers meant. i have since noted that these are the illuminance values calculated for the spaces.


Analysis of Existing System:

AGI 32 was used to calculate the existing lighting conditions for the space. All reflectances and light loss factors cited above were used in the computer model. A fine mesh was used for this space due to the number of obstructions and the possibility for innacurate shadowing effects when using a large patch size. Future calculations will be done using Radiance as an exercise in rendering using alternate software and to aide in the calculation of glare and luminance ratios. Shaded and wireframe views are shown below.

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Analysis of Existing System (cont'd):

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Horizontal calculation grids were placed on the floor workplane, on the receptionist desk and on the stairs. Vertical calculation grids were placed going north-south and east-west within the space and on each of the walls highlighted by track lighting as well. For more information on the locations of grids, see the AGI printouts attached.

Results:Horizontal:

Floor Avg – 21 fcReceptionist Avg – 20 fc

Vertical:Wall Avg – 23 fcNorth-South – 13 fcEast-West – 8 fc

All surfaces are satisfactory, or overlit when compared to IES recommendations. As a result, some light levels may be dropped which may improve power density. The walls could possibly be increased to 30 fc to give the exhibits a little more accent. All illuminances will have to be reevaluated once a hierarchy is established.

Dimming and switching systems should be investigated to ascertain the most appropriate control scheme for the space. Also, daylighting scenarios will need to be run to determine the effect of daylight on light levels within the space.

Though the power density is already rather low and the atmosphere is quite nice, the necessity of green design will make any additional power savings a welcome addition to the building. Also, tying in the fixtures with the architecture will give a more unifying theme to the space.

Since the building is designed to have as little impact on the environment and to mesh as well with nature as possible, a possible theme might be nature. Nature tends to keep things as simple as possible and yet at the same time make them beautiful. The bare concrete on the ceiling and on the columns seems to lend itself to expressing the true nature of materials. I will attempt to present the concrete as concrete. Any fixtures selected will be chosen to have as little impact on the space as possible so it can be presented simply and so they will not be a distraction.

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maino

Comment on Text

"Any possible theme? Is a particular look desired?"

Case Study Classroom

Floor Plan and Lighting Layout:Floor Plan:

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Looking South Looking West

Looking North Looking East

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Materials:Walls: Painted Gyp. Bd. (Eggshell)

Reflectance of 65%

Vinyl Wallcovering (Eggshell)Reflectance of 50%

Ceiling: White Acoustical Tile (AC-2: 1.5” thick)Reflectance of 90%

Painted Gyp. Bd. (Eggshell)Reflectance of 65%

Wall Base: Vinyl Base Reflectance of 15%

Floor: Carpet TileReflectance of 20%

Glazing:





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D = Wattstopper DT-200Wall mounted dual-tech (ultrasonic and passive infrared) motion detector2000 square feet walking motion @ 10'-0” A.F.F.1000 square feet desktop motion @ 10'-0” A.F.F.

Control Systems:Lutron Grafik Eye NT GRX-45 wall stationLutron Grafik Eye GRX-FDBI interface for P3D fixtures

Operating Conditions:Fixtures are controlled by LCP-1 during normal building hours. After the clock in the control panel times out, the fixtures are controlled by occupancy sensors. Dimming Ballasts within the pendant fixtures allow for different scenes to be set depending on what the room is currently being used for.

Normal business hours are here defined as:Mon-Fri 8am-10pmSat-Sun 8am-6pm

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Fixture ScheduleLabel Description Lamping Voltage Total Watts Ballast QuantityP3D Linear Fluorescent

Indirect Pendant(3) F32T8/835 120 102 E 8

W4 Wall Mounted Linear Fluorescent Indirect

(2) F32T8/830 120 68 E 5

R2 Recessed Compact Fluorescent Wallwasher

(1) CFL32DT/835 120 35 E 5

Ballast Types:E: Electronic


[(102W)(8)+(68W)(5)+(35W)(5)]1021sf

= 1.3 W/sf

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maino

Comment on Text

"Different CCT? Could get mixed up." this is true, but this is what the light fixture schedule indicates. this will be addressed in my redesign.

maino

Highlight

"Different CCT? Could get mixed up." this is true, but this is what the light fixture schedule indicates. this will be addressed in my redesign.

maino

Comment on Text

this was previously indicated to be a direct/indirect fixture. this was a typo and has been corrected. this is a closed bottom, open top fixture, so the category VI indicated on the next page is correct.



LLF ScheduleLabel Cat. Room Clean Interval BF LLD RSDD LDD LLFP3D VI Clean 12 months .95 1* .97 .89 .82

W4 VI Clean 12 months .95 1* .97 .89 .82

R2 IV Clean 12 months .95 1* .97 .89 .82


Task Descriptions:

The Case Study Classroom has varied uses and occupants. Day to day lectures will be attended by Sierra Nevada College students, but the room will also be used by industry professionals and professors to attend lectures on various topics. As such, the most important visual tasks will be reading papers and pamphlets in front of the user, reading slides or posters at the front of the room that are used during these lectures and facial recognition and modeling for the speaker at the front of the room. As with the lobby, both horizontal and vertical illuminances must be carefully considered since horizontal illuminance is critical to reading tasks in front of the user and vertical illuminance is critical to facial rendering requirements for the speaker as well as reading materials placed vertically on the south wall.

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maino

Comment on Text

"At ballast watts used? Sounds low." ballast watts used are for the entire luminaire (3 lamps), they are correct as is the ballast factor.

maino

Comment on Text

"Direct/Indirect? Is it solid bottom?" this category is correct. see comment on previous page.


Design Criteria:

Daylight Integration:North facing windows may provide some measure of daylight into the space,

which may allow for an alternative dimming/switching system than what is currently designed. Currently, there is no zoning within the room, and with some zoning consideration it may be possible to utilize the daylight that is brought into the space. One factor that may be prohibitive is the overhang of the arcade just outside the window, which may block much of the light into the space. Since the lights will also be out for presentations, however, means of controlling and blocking daylight are also needed.

Reading Tasks:Since a majority of the time in this room will be devoted to reading one form of

material or another, priority should be placed on vertical and horizontal light levels that are appropriate for reading various types of media. Since the types of media can vary between pamphlets, papers, slides (PowerPoint and the like) and posters, the lighting system must be flexible enough to allow for all these types of materials to be easily read.

Fixture Appearance:Since the main use of the room is to teach people and to help the flow of

information from speaker to listener, the fixtures must not be distracting to the occupants. Both the speaker and the listeners must not be distracted by obnoxious looking fixtures or fixtures that may interfere with a listeners line of sight.

Accent Lighting:Some forms of media such as posters may need to be accented, while other

forms such as computerized slides, will not benefit from being accented. As such, a versatile and controllable accenting system should be implemented that allows the speaker to easily highlight whatever the wish while at the same time not washing out slides they may be using. The controls should be simple enough for visiting presenters to understand.


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maino

Comment on Text

previously, it was confusing as to what forms of media i was talking about. this has been added as a clarification.

maino

Comment on Text

"Will they understand the control system?" the phrase "easily highlight whatever they wish" was not specific, so this was added for clarification.




Reading - Desk: 60fc calculated (IES 30fc)Demonstration: 64fc calculated (IES 100fc)

Vertical:Front Wall: 41fc calculated (IES 30fc)

Importance:Vertical and horizontal illuminances must be maintained in order to

accomplish the tasks that the space requires. While this space may be used for demonstrations that require very fine work, that will not be it's primary use, so the 100fc that the IES recommends may be a bit high for something that isn't required very often. 50 to 60 footcandles should be sufficient for ambient lighting for most tasks. Additional power savings may be observed by bringing the light directly down to the user in the form of task lights at each desk, plus the 100 footcandles that the IES recommends can be achieved by the use of these task lights.

Power Density:ASHRAE 90.1 allowance (school/university lecture hall):1.6 W/sf

An additional 1W/sf can be added for decorative wall sconces and highlighting artwork, but will not be used.

Existing: 1.3 W/sf OK

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maino

Comment on Text

"What do you set as the target?" this was added/modified to indicate what i felt appropriate levels and strategies of lighting would be.



AGI 32 was used to calculate the existing lighting conditions for the space. All reflectances and light loss factors cited above were used in the computer model. A larger mesh than what was used in the lobby was used for this space to speed up calculation time. Future calculations will be done using Radiance as an exercise in rendering using alternate software and to aide in the calculation of glare and luminance ratios. Shaded and wireframe views are shown below.

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Horizontal calculation grids were placed on the desk workplane. Vertical calculation grids were placed on the southern wall. For more information on the locations of grids, see the AGI printouts attached.

Results:Horizontal:

Desk Avg – 60 fcDemonstration Avg – 64 fc

Vertical:South Wall Avg – 41 fc

All surfaces are satisfactory, or overlit when compared to IES recommendations. As a result, some light levels may be dropped which may improve power density. As it is currently designed, the room is well designed for the reading tasks that may take place in the space, with the possible flaw being the inability to fully control accent lighting.

Dimming and switching systems should be investigated to ascertain the most appropriate control scheme for the space. Also, daylighting scenarios will need to be run to determine the effect of daylight on light levels within the space as mentioned previously. Some daylight may be available from the northern windows, and the eastern windows may provide some useful daylight, although care will have to be taken to examine conditions when the room will receive direct daylight.

Again, the necessity of green building design may drive the need for an even lower power density in this space. If the power density can drop even another 5-10% this may aide in the collection of additional LEED credits for Energy and Atmosphere by being significantly under ASHRAE 90.1.

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Chemistry Lab

Floor Plan and Lighting Layout:Floor Plan:

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Chemistry Lab


Looking South

Looking West

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Chemistry Lab

Materials:Walls: Painted Gyp. Bd. (Epoxy)

Reflectance of 60%

Columns: Exposed ConcreteReflectance of 40%

Ceiling: White Acoustical Tile (AC-1: 1” thick)Reflectance of 90%

Wall Base: Vinyl Base Reflectance of 15%

Floor: Linoleum Tile (Armstrong “Marmorette”)Reflectance of 30%

Glazing:




To Interior: 1/4” Monolithic Glass (Safety Glazing)Amber TintTransmittance of 65%Reflectance of 4%


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Chemistry Lab


D = Wattstopper DT-200Wall mounted dual-tech (ultrasonic and passive infrared) motion detector2000 square feet walking motion @ 10'-0” A.F.F.1000 square feet desktop motion @ 10'-0” A.F.F.

Control Systems:Multi-level switching

Operating Conditions:Fixtures are controlled via three levels of switching, with the occupancy sensor present to turn off the lights as is appropriate when no one is there. The fixtures are not wired back to a lighting control panel, but instead rely solely on the occupancy sensor to turn off the lights when the space is unoccupied.

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Chemistry Lab



P5 Linear Fluorescent Direct/Indirect Pendant

(3) F32T8/835 120 102 E 15

W5 Wall Mounted Linear Fluorescent

Direct/Indirect

(1) F32T8/830 120 34 E 1



[(102W)(15)+(34W)(1)]915sf

= 1.7 W/sf



P5 VI Clean 12 months .95 1* .97 .89 .82

W5 IV Clean 12 months .95 1* .97 .89 .82


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maino

Comment on Text

"Why not very clean?" since this is a regular school lab and not a commercial or high end research lab, conditions will most likely be dirtier than if actual research were taking place. because of this i assumed only clean conditions.

Chemistry Lab

Task Descriptions:

The Chemistry Lab is used primarily by students and faculty for classes and for research. Day to day lectures and classes will be attended by Sierra Nevada College students. Most of the important tasks will be done at the workstations and will require good horizontal and vertical illuminances due to dangerous nature of some chemistry experiments. Also required will be good levels of illuminance on the southern wall, where the professor will likely be lecturing. Reading will be a high priority on both the front wall and at the workstations.

Design Criteria:

Reflected Glare:The high level of risk involved in some chemistry experiments necessitates

restricting the amount of glare and the number of glare sources in the space. Since there will be large amounts of glass in the space in the form of windows, beakers and jars elimination of glare sources is essential.

Direct Glare:As with reflected glare, direct glare from the fixtures cannot be tolerated as it

may pose a safety hazard to those in the lab as they work on experiments.

Daylight Integration:The Chemistry Lab sits on the north face of the building, lending itself to

daylighting well. Unlike the Case Study Classroom which has the arcade blocking the sunlight, the Chemistry Lab has few obstructions to the northern sky. This, combined with the fact that the lights will also not need to be out for presentations like the Case Study Classroom, makes the Chemistry Lab the perfect candidate for switching or dimming based on the amount of light a photocell receives.


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Chemistry Lab



Workstation: 102fc (IES 50fc)Vertical:

Workstation: 47fc (IES 30c)South Wall: 46fc (IES 30fc)

Importance:Vertical and horizontal illuminances must be maintained in order to

accomplish the tasks that the space requires. Right now, the space is overlit per IES recommendations, and perhaps some overlighting is called for, but in order to bring the power density down the lighting levels may need to be dropped. The importance of the tasks, however may dictate that the power allowance not drop much below that of ASHRAE 90.1. By reducing the horizontal illuminance for ambient lighting the power densities may be reduced, and by adding task lighting for fine tasks, the 100 footcandles currently designed may be reached without greatly increasing the power density.

Power Density:ASHRAE 90.1 allowance (school/university classroom):1.6 W/sf

An additional 1W/sf can be added for decorative wall sconces and highlighting artwork, but will not be used.

Existing: 1.7 W/sf OVER

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maino

Comment on Text

"Task lighting possible?" this was added to reinforce previous comments dealing with the possibility of reducing ambient light levels and adding task lights.

Chemistry Lab


AGI 32 was used to calculate the existing lighting conditions for the space. All reflectances and light loss factors cited above were used in the computer model. A larger mesh than what was used in the lobby was used for this space to speed up calculation time. Future calculations will be done using Radiance as an exercise in rendering using alternate software and to aide in the calculation of glare and luminance ratios. Shaded and wireframe views are shown below.

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Chemistry Lab


Horizontal calculation grids were placed on the desk workplane. Vertical calculation grids were placed on the southern wall. For more information on the locations of grids, see the AGI printouts attached.

Results:Horizontal:

Desk Avg – 102 fcVertical:

Desk Vert Avg – 47fcSouth Wall Avg – 46 fc

All surfaces are overlit when compared to IES recommendations. As a result, some light levels may be dropped which may improve power density. Currently, the light levels in the space make it easy to perform the nontrivial tasks required in a laboratory environment. Unfortunately, this light level comes at the price of exceeding ASHRAE 90.1.

Because the existing power density does exceed the allowable power density, different alternatives to the current lighting setup will need to be explored. If at all possible, retaining the original lighting levels while lowering the current power density to acceptable levels.

Daylighting scenarios will need to be run to determine the effect of daylight on light levels within the space as mentioned previously. Daylight, combined with switching or dimming may end up being a feasible solution for the space. Since the room has only north facing windows, direct light will not be a problem. This will aid in the elimination of glare sources as well as provide a nice source of light for the room. The addition of a photocell in the room may aide in determining appropriate electric lighting levels.

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Exterior

Elevation and Lighting Layout:North Elevation:

Materials:Walls: Split Face Concrete Masonry (Med. Brown)

Reflectance of 15%

Fiber Cement Siding (Med. Brown)Reflectance of 15%

Columns: Split Face Concrete Masonry (Med. Brown)Reflectance of 15%

Roof: Shakes and Seam Metal (Dark Green)Reflectance of 25%

Glazing: (2) Panes, Argon Filled – construction as followsIndoor and Outdoor Lite:


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Exterior

Controls:Control Systems:

Simple switching

Operating Conditions:Fixtures are off during daylight hours then turned on at night by the staff.



W1 Wall mounted wet location sconce

(2) CFL18DD/835 120 42 E 22

W3 Wall mounted full cutoff wet location area light

(1) M50/830 120 69 E 2

R7 Recessed wet location downlight

(2) CFL32DT/835 120 70 E 7


Existing Power Density:Main Door:

[(70W)(1)] 6lf = 11.6 W/lf

Other Doors:[(70W)(6)+(50W)(2)]

30lf = 17.3 W/lfCanopy:

[(42W)(22)] 2394sf = .39 W/sf

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Exterior



W1 VI Dirty 12 months .95 1* .78 .75 .56

W3 IV Dirty 12 months 1 1* .78 .75 .59

R7 IV Dirty 12 months .95 1* .78 .72 .53


Task Descriptions:

The facade of the serves as the point of engress and egress for TCES. As such, the main tasks are walking and, for safety reasons, facial recognition. Glare from fixtures and reflected glare from windows could potentially interfere with these tasks.

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maino

Comment on Text

previously, this was incorrectly labeled as a category VI fixture. the light fixture schedule on the previous page is correct in stating that this is a full cutoff fixture. the only non-full cutoff fixture is the wall sconce "w1"

Exterior

Design Criteria:

Reflected Glare:Glare reflected in the windows can be distracting and due to low ambient light

levels at night, can have a blinding effect since the eye is not accommodated to higher light levels at night. For safety reasons, glare in glazing should be avoided whenever possible.

Direct Glare:Glare coming directly from fixtures is also a problem for the same reason that

reflected glare is problematic.

Light Trespass:In order to meet LEED standards, no direct light may leave the property. This

means that fixtures must be chosen carefully so as not to create light tresspass onto neighboring properties.

Dark Sky:Again, to satisfy LEED criteria full cutoff fixtures must be used to avoid light

pollution into the sky. Full cutoff fixtures do not put out light above the horizontal plane, so no light can escape into the sky where it would be useless.


Walkways: 1.71fc (IES .5fc)Vertical:

Facial Recognition: 1.59fc (IES 3fc)Importance:

Vertical and horizontal illuminances must be increase in order to accomplish the tasks that the space requires. Right now, the space is underlit per IES recommendations and should probably be increased both for ease of accomplishing tasks and for safety reasons.


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maino

Comment on Text

"Walkways of what type? This could be high unless right at the door." this was previously indicated to be 5fc, which was a typo. the correct illuminance is .5 fc as taken from figure 22-10 from the lighting handbook. "walkways away from roadways" were used to determine proper illuminance levels.

Exterior


Power Density:ASHRAE 90.1 allowance:

30 w/lf main entrance20 w/lf other doors1.25 w/sf canopies

Existing: Main Door: 11.6 W/lf OKOther Doors: 17.3 W/lf OKCanopy: .39 W/sf OK

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Exterior


AGI 32 was used to calculate the existing lighting conditions for the space. All reflectances and light loss factors cited above were used in the computer model. A larger mesh than what was used in the lobby was used for this space to speed up calculation time. Future calculations will be done using Radiance as an exercise in rendering using alternate software and to aide in the calculation of glare ratios. Shaded and wireframe views are shown below.

of 41

maino

Note

"Not really dark sky compliant." no, it's not. the fixture pictured here is the wall sconce which is not dark sky compliant. the dark sky compliance was one of my design criterion, not the original design team, and will be addressed in my redesign.

Exterior


Horizontal calculation grids were placed on the ground workplane. Vertical calculation grids were placed along the axis of the arcade. For more information on the locations of grids, see the AGI printouts attached.

Results:Horizontal:

Ground Avg – 1.71 fcVertical:

Arcade Avg – 1.59fc

All surfaces are underlit when compared to IES recommendations. As a result, light levels will need to be increased. Fortunately, the power densities are already below those prescribed in ASHRAE 90.1 so increasing the light levels won't be too much of a challenge. In order to maintain a “green” building, however, every attempt should be made to stay significantly below ASHRAE 90.1.

Alternate fixtures which offer more favorable distributions should be examined, and wall mounted fixtures with a full cutoff distribution to replace the current sconces should be explored as well.

of 41

Supplemental Information

AGI Calculations(4 pages - attached)

AGI Models(4 files – P:\ae 481\tech1)

of 41

TCES - Lobby

13.811.08.37.87.77.77.914.019.523.024.7 15.310.08.68.48.48.48.513.219.022.824.5 14.89.08.68.68.98.88.68.817.621.723.3

9.8

7.4

7.0

6.7

6.7

6.9

6.9

6.8

6.3

5.8

6.0

6.0

5.8

5.9

6.6

7.0

9.8

8.4

8.0

7.8

7.8

8.0

8.0

7.9

7.3

6.7

6.8

6.9

7.0

7.1

8.2

8.8

10.4

9.3

8.9

8.8

9.2

9.8

9.5

8.8

8.0

7.4

7.2

7.2

7.7

8.4

9.8

10.9

8.3

14.0

31.5

28.8

43.9

49.3

23.0

1.3

2.7

4.7

6.4

13.7

25.6

131

77.0

101

68.4

59.4

0.4

3.6

5.9

9.9

21.3

24.4

65.9

48.7

65.1

57.3

42.8

0.3

4.1

7.0

14.6

26.9

17.9

16.6

21.7

37.6

40.0

41.1

1.0

3.7

6.8

17.3

26.0

17.2

10.5

10.7

9.9

8.8

8.5

9.1

6.6

7.4

15.3

19.5

15.3

10.2

10.8

9.7

9.0

8.9

9.7

9.3

7.7

10.2

14.6

15.7

17.9

20.8

18.4

14.0

12.2

10.8

9.5

7.3

7.0

5.1

5.8

11.3

15.2

22.9

27.3

24.3

16.7

15.7

13.1

10.8

8.2

4.7

15.9

13.7

10.6

11.6

13.4

20.4

15.7

11.1

16.4

24.5

20.1

14.9

10.3

18.6

30.7

14.1

10.5

7.4

12.0

16.619.920.517.813.89.86.9 23.930.631.026.419.111.77.6 36.147.143.344.327.712.97.0 12.922.210.926.42.51.93.4

10.5 14.0 20.2 24.7 27.3 26.7 22.4 17.9 13.311.0 16.4 27.3 35.9 39.8 39.0 31.7 22.5 15.68.5 73.4 35.7 51.7 55.4 52.9 46.7 23.8 23.52.5 2.5 10.8 20.8 22.8 12.4 26.5 4.3 2.5

17.8

23.6

27.3

27.1

22.9

17.6

23.1

34.5

41.3

41.2

33.9

22.9

27.9

56.7

62.4

62.3

56.4

27.8

3.8

44.4

17.7

17.6

44.2

3.7

12.3 16.4 19.4 21.0 18.1 14.2 9.713.6 21.9 28.7 31.2 26.8 18.6 9.49.7 26.5 46.6 39.3 44.5 20.7 5.51.6 3.3 23.7 3.4 22.6 1.9 0.9

12.7

29.8

17.7

45.7

37.4

70.8

103

117

168

153

146

120

136

109

218

162

Luminaire Schedule

Project: All Projects

Numeric Summary


Label

CalcType

Symbol

Qty

Label

UnitsAvg

Max

Min

Avg/MinMax/Min

Arrangement

Lumens

LLF

Description

face-ns

Illuminance

Fc

13.07

24.7

7.7

1.70

3.21

face-ew

Illuminance

Fc

7.78

10.9

8t2-10038S3K

SINGLE

6800

5.8

1.34

1.88

floor_Planar_60

0.850

Illuminance

Fc

19.86

131

0.3

4t3-CDM35PAR30_M_SP

SINGLE

-1

0.850

10

t4-DF227

SINGLE

1548

0.810

track fixture

12

w2-2_13w_changeto18w-080

SINGLE

1075

0.810

COLONNADE_MIDLAND SERIES 2LF13

66.20

437.67

wall-gyp_Planar_16

Illuminance

Fc

19.79

5s9-3_26w-01249

SINGLE

1161

0.790

4s10-4_26w-01249

SINGLE

1548

0.790

2p6-7801_242-13

SINGLE

2400

0.830

7801_242-13

47.1

1.9

10.42

24.79

wall-gyp_Planar_21

Illuminance

Fc

24.80

73.4

2.5

9.92

29.36

wall-gyp_Planar_33

Illuminance

Fc

31.59

62.4

3.7

8.54

16.86

wall-gyp_Planar_34

Illuminance

Fc

18.27

46.6

0.9

20.30

51.78

stair_Planar_36

Illuminance

Fc

103.14218

12.7

8.12

17.17

wall-gyp_TotalTop

Illuminance

Fc

23.42

73.4

0.9

26.02

81.56

TCE

S - C

ase Study C

lassroom

Lighting Power Density =1.374 Watts/Sq.Ft.

LPD

Lighting Power Density

Area =1015 Sq.Ft.

Total Watts = 1395

30.8

35.3

39.2

41.5

43.1

43.5

43.4

42.1

39.9

36.1

31.6

31.9

38.9

43.1

45.1

46.5

46.5

46.8

45.6

43.8

39.6

32.5

28.7

42.7

39.9

49.0

42.8

49.3

42.9

49.5

40.4

42.9

28.6

50.2

55.5

60.4

62.5

63.1

61.8

61.0

61.2

62.1

60.8

57.5

52.0

45.8

48.9

54.2

59.1

61.4

61.9

60.6

59.8

60.0

61.0

59.6

56.3

50.9

44.8

55.8

60.6

65.0

66.8

67.6

66.5

66.1

66.1

66.5

64.8

61.5

55.8

49.5

55.5

60.3

64.7

66.5

67.3

66.2

65.8

65.8

66.2

64.5

61.2

55.5

49.3

53.1

57.8

62.2

64.3

65.1

64.3

64.1

63.9

64.2

62.8

59.6

54.3

48.8

53.4

58.1

62.4

64.5

65.3

64.5

64.3

64.1

64.3

62.8

59.6

54.3

48.8

55.9

59.5

61.8

62.3

62.7

62.9

62.4

62.4

61.8

59.6

60.9

65.1

67.8

68.4

68.2

68.4

68.0

68.2

67.7

65.3

Luminaire Schedule


Symbol

Qty

Numeric Summary


Label

Arrangement

Label

CalcType

UnitsAvg

Max

Min

Avg/Min

Lumens

LLF

Description

Max/Min

walls_Planar_19

Illuminance

Fc

40.71

49.5

28.6

1.42

1.73

desk_Planar_4

Illuminance

Fc

57.40

63.1

44.8

1.28

1.41

desk_Planar_10

Illuminance

Fc

10

p3,p3d - Peerless_PRIMA_

SINGLE

2850

62.36

67.6

49.3

1.26

1.37

0.820

PRM3-3-32

desk_Planar_16

Illuminance

Fc

5w4-changeto32w-crw228w

SINGLE

2850

0.820

60.42

65.3

48.8

1.24

1.34

CRW2-2-32-WHR

demo

Illuminance

Fc

63.97

68.4

55.9

5r2-Lithonia_Lighting_Dow

SINGLE

2400

0.820

6W7A (32TRT)

1.14

1.22

desk_TotalTop

Illuminance

Fc

60.06

67.6

44.8

1.34

1.51

TCE

S - C

hemistry Lab

LPD

lighting power density

Area =907.19 Sq.Ft.

Total Watts = 1373

Lighting Power Density =1.513 Watts/Sq.Ft.

41.746.349.150.450.750.148.745.940.834.0 41.646.649.551.051.350.949.346.241.134.8 44.750.253.254.755.154.753.149.944.036.3

31.4

29.0

43.3

38.1

60.0

50.5

74.8

61.9

84.1

69.5

88.8

73.5

90.7

75.3

90.7

75.3

87.8

94.9

109

123

133

133

127

113

98.9

95.0

102

118

132

143

144

137

123

107

98.7

106

122

136

147

148

141

127

112

100

107

123

138

148

149

143

129

113

99.3

106

122

137

148

149

142

128

112

96.3

103

119

134

145

146

139

125

109

90.4

97.8

113

127

138

139

132

118

103

80.3

86.8

100

113

123

124

118

105

91.9

31.9

35.4

38.6

41.9

47.9

54.7

54.3

64.4

77.4

65.0

78.3

95.8

69.8

84.6

104

66.9

84.5

107

67.3

84.8

107

69.1

86.7

109

35.8

36.2

37.2

37.7

38.0

37.3

36.6

36.0

34.5

30.3

0.1

35.9

36.5

38.0

40.0

41.5

40.9

38.8

37.2

36.0

34.0

29.8

36.4

37.5

40.0

46.9

65.1

68.3

50.3

39.7

36.1

34.4

32.1

31.2

32.4

36.6

57.1

204

227

79.7

37.1

34.1

32.3

28.9

Luminaire Schedule


Symbol

Qty

Label

Arrangement

Lumens

LLF

Description

Numeric Summary


Label

CalcType

UnitsAvg

15

p5 - Peerless_PRIMA_prm4

SINGLE

2850

Max

Min

Avg/MinMax/Min

vertical

Illuminance

Fc

0.808

PRM4-3-32

47.20

55.1

34.0

1.39

1.62

workplane_Planar_4

Illuminance

Fc

64.81

90.7

29.0

2.23

3.13

workplane_Planar_10

Illuminance

Fc

120.75149

80.3

1.50

1.87

workplane_Planar_16

Illuminance

Fc

71.99

109

1w5-V_F28_W

SINGLE

2850

0.850

VIA-28T5-B-1-W

31.9

2.26

3.42

blackboard_Planar_4

Illuminance

Fc

46.75

227

0.1

467.50

2278

floor_TotalTop

Illuminance

Fc

0.00

0.0

0.0

N.A.

N.A.

workplane_TotalTop

Illuminance

Fc

102.31149

29.0

3.53

5.17

TCE

S - E

xterior

2.0

2.6

3.2

4.2

5.4

5.5

4.5

3.4

2.5

2.0

2.0

2.2

2.5

3.3

4.3

5.4

5.4

4.3

3.2

2.4

2.0

1.4

0.7

0.6

0.6

0.5

0.5

0.5

0.5

0.6

1.0

1.4

2.0

2.3

3.1

4.2

5.3

5.4

4.5

3.3

2.4

1.7

1.1

0.5

0.1

0.1

0.4

0.9

1.0

1.0

1.0

0.9

0.1

0.1

0.2

1.0

1.6

2.4

3.1

4.2

5.5

5.5

4.9

3.6

2.8

2.1

1.9

1.4

0.8

0.7

0.6

0.5

0.5

0.6

0.7

0.9

1.7

2.3

2.6

3.3

4.5

5.6

5.6

4.8

3.6

2.7

2.1

2.2

1.9

2.4

3.0

3.6

4.1

4.1

3.6

2.9

2.3

1.7

1.5

0.8

0.8

0.7

0.6

0.6

0.6

0.6

0.7

0.9

1.7

2.2

2.5

3.3

4.4

5.5

5.5

4.7

3.5

2.6

1.9

1.2

0.3

0.1

0.1

0.5

1.0

1.0

1.0

1.0

0.4

0.1

0.1

0.2

0.5

1.6

2.3

3.0

3.8

4.6

4.8

4.2

3.3

2.7

2.1

1.9

1.0

0.9

0.8

0.6

0.6

0.6

0.6

0.8

0.9

1.3

2.3

2.5

3.2

3.9

4.7

4.8

4.1

3.3

2.7

2.0

1.6

1.7

2.1

2.5

2.9

3.1

3.1

2.9

2.5

2.1

1.5

1.0

1.0

1.0

0.4

0.3

0.1

0.2

0.9

1.5

2.2

3.0

4.0

5.3

5.5

4.6

3.5

2.6

0.9

0.9

0.8

0.7

0.6

0.6

0.7

0.8

1.0

1.8

1.8

2.5

3.1

3.9

4.6

4.8

4.1

3.2

2.6

1.9

1.2

0.3

0.1

0.1

0.3

0.9

1.0

0.8

0.2

0.1

0.1

0.3

0.0

2.0

2.6

3.0

3.4

3.5

3.2

2.7

2.3

1.8

0.3

0.8

0.7

0.6

0.5

0.5

0.6

0.7

0.8

0.5

2.1

2.7

3.1

3.5

3.5

3.2

2.7

2.3

1.2

1.6

2.0

2.2

2.3

2.3

2.2

2.0

1.6

0.8

0.7

0.6

0.6

0.6

0.7

0.8

0.8

1.0

2.1

2.6

3.0

3.4

3.4

3.1

2.7

2.2

1.1

0.1

0.1

0.1

0.2

0.8

0.8

0.2

0.1

0.1

0.0

0.1

1.6

2.1

2.3

2.5

2.5

2.4

2.2

1.9

1.4

0.1

0.8

0.7

0.6

0.5

0.5

0.6

0.7

0.8

0.1

1.7

2.1

2.4

2.5

2.6

2.4

2.2

1.8

0.8

1.2

1.4

1.6

1.6

1.6

1.6

1.4

1.2

0.8

0.7

0.6

0.6

0.6

0.7

0.8

0.8

0.7

1.7

2.1

2.3

2.5

2.5

2.4

2.2

1.8

0.7

0.1

0.1

0.2

0.2

0.7

0.7

0.6

0.1

0.1

0.1

0.1

0.1

0.8

1.2

1.5

1.7

1.8

1.8

1.7

1.6

1.4

1.1

1.3

0.8

0.8

0.7

0.6

0.5

0.5

0.6

0.7

0.8

0.8

1.4

1.3

1.6

1.8

1.9

1.9

1.8

1.6

1.4

1.0

0.7

0.8

0.9

1.0

1.0

1.0

1.0

1.0

1.0

0.9

0.8

0.7

0.8

0.8

0.7

0.6

0.6

0.6

0.7

0.8

0.8

1.3

1.0

1.3

1.5

1.7

1.8

1.8

1.7

1.6

1.3

1.0

0.7

0.1

0.1

0.1

0.1

0.6

0.7

0.0

0.1

0.1

0.9

1.0

0.8

0.5

0.5

0.4

0.5

0.6

0.8

1.0

1.7

1.0

0.8

0.6

0.4

0.4

0.4

0.5

0.8

1.0

0.9

0.9

1.0

0.9

0.6

0.5

0.5

0.5

0.7

0.9

1.0

0.8

1.0

1.0

0.8

0.6

0.5

0.5

0.6

0.7

1.0

1.0

1.6

0.9

0.7

0.5

0.4

0.3

0.4

0.5

0.8

1.0

1.7

1.0

0.9

0.6

0.5

0.5

0.4

0.5

0.7

0.9

0.9

0.7

0.1

0.0

0.0

0.0

0.1

0.1

2.7

2.3

1.2

0.7

0.5

0.5

0.5

0.8

1.5

2.7

4.8

2.8

1.7

0.9

0.5

0.4

0.5

0.8

1.5

2.7

2.5

2.4

2.8

1.8

0.9

0.6

0.5

0.7

1.1

2.1

2.9

2.0

2.8

2.4

1.3

0.7

0.5

0.5

0.7

1.1

2.1

2.9

4.6

2.3

1.2

0.7

0.4

0.4

0.5

0.8

1.5

2.7

4.8

2.8

1.8

0.9

0.6

0.5

0.5

0.6

1.1

2.1

2.8

1.9

0.1

0.0

0.1

0.1

0.1

0.1

5.7

4.0

1.6

0.8

0.5

0.5

0.6

1.0

2.2

5.0

9.6

5.6

2.6

1.1

0.6

0.5

0.6

0.9

2.1

5.0

5.2

4.6

5.6

2.6

1.1

0.7

0.6

0.8

1.4

3.4

5.9

3.4

5.8

4.0

1.7

0.8

0.6

0.6

0.7

1.4

3.4

5.9

9.0

4.0

1.6

0.8

0.5

0.4

0.5

0.9

2.1

5.0

9.6

5.6

2.6

1.1

0.6

0.5

0.5

0.7

1.4

3.4

5.9

3.3

0.1

0.1

0.1

0.1

0.1

0.1

3.6

2.9

1.4

0.7

0.5

0.5

0.6

0.9

1.8

3.4

6.1

3.6

2.0

1.0

0.6

0.5

0.5

0.9

1.7

3.4

3.3

3.0

3.6

2.1

1.0

0.7

0.6

0.7

1.3

2.6

3.7

2.4

3.6

2.9

1.4

0.8

0.6

0.5

0.7

1.3

2.6

3.7

5.8

2.9

1.4

0.7

0.5

0.4

0.5

0.8

1.7

3.4

6.1

3.6

2.1

1.0

0.6

0.5

0.5

0.7

1.2

2.5

3.7

2.3

0.1

0.1

0.1

2.2

1.6

1.1

0.6

0.6

0.5

0.5

0.5

0.5

0.6

0.7

1.4

1

1

1

11

1

22

22

2

2

2

2

2

23

3

33

3

3

3

4

4

44

55

51

11

11

11

11

11

12

22

22

22

33

3

Luminaire Schedule


Numeric Summary


Label

CalcType

Symbol

Qty

Label

Arrangement

Lumens

LLF

UnitsAvg

Max

Min

Description

Avg/MinMax/Min

walkway

Illuminance

Fc

1.71

5.6

0.0

0.00

0.00

Vertical

Illuminance

Fc

1.59

9.6

0.0

0.00

0.00

4r7-Downlighting_8_Ltl976

SINGLE

2400

0.530

8O2AZ (32TRT)

16

w1-2_26w_changeto18w-080

SINGLE

1075

0.560

CB4064-2QF26

dave maino lighting/electrical dr. mistrick tces incline village, … · 2005-10-22 · ceiling...

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