FCS 312 Midterm Block 3-4 (Study Guide)

CH 6-11 & Final Review

[Block 3 / Chapter 7: Lighting Controls / Core Ideas] What conditions can lighting controls regulate?

Answer: Controls can regulate operating time, intensity, color, occupancy response, daylight response, scenes, schedules, shades, and communication between devices.

[Block 3 / Chapter 7: Lighting Controls / Core Ideas] Why is a lighting-control system a coordination problem?

Answer: Sources, drivers, dimmers, protocols, sensors, wiring, loads, zones, programming, interfaces, and commissioning must all be compatible.

[Block 3 / Chapter 7: Lighting Controls / Core Ideas] What makes a lighting-control strategy successful?

Answer: It reduces energy, supports activities and atmosphere, gives users appropriate control, responds automatically when useful, and remains understandable, reliable, and maintainable.

[Block 3 / Chapter 7: Lighting Controls / Vocabulary to Know] What is dimming?

Answer: Dimming changes the light output and power use of a lighting system.

[Block 3 / Chapter 7: Lighting Controls / Vocabulary to Know] What is the difference between occupancy and vacancy sensing?

Answer: An occupancy sensor automatically turns lights on and off based on presence. A vacancy sensor requires manual-on operation but turns lights off automatically.

[Block 3 / Chapter 7: Lighting Controls / Vocabulary to Know] What is daylight response?

Answer: Daylight response adjusts electric-light output according to the amount of daylight available.

[Block 3 / Chapter 7: Lighting Controls / Vocabulary to Know] What is scene control?

Answer: Scene control recalls predetermined settings for multiple lighting zones to support different activities, atmospheres, or times.

[Block 3 / Chapter 7: Lighting Controls / Vocabulary to Know] What is addressable or networked control?

Answer: Addressable control allows individual devices to receive separate commands. Networked control connects devices so they can communicate and operate as a coordinated system.

[Block 3 / Chapter 7: Lighting Controls / Vocabulary to Know] What is commissioning?

Answer: Commissioning tests, programs, calibrates, documents, and verifies that the installed control system performs according to the design intent.

[Block 3 / Chapter 7: Lighting Controls / Apply It] Apply a control strategy to a restaurant.

Answer: Separate table, ambient, decorative, accent, bar, service, daylight, and exterior lighting into appropriate zones. Use preset scenes for preparation, lunch, dinner, events, and cleaning.

[Block 3 / Chapter 7: Lighting Controls / Check Your Understanding] What should be controlled independently in a restaurant?

Answer: Control layers and areas with different purposes independently, including table lighting, artwork, decorative fixtures, bar areas, service areas, daylight zones, circulation, and exterior lighting.

[Block 3 / Chapter 7: Lighting Controls / Check Your Understanding] What is the difference between selecting a dimmable product and designing a working dimming system?

Answer: A dimmable product can potentially change output. A working system requires compatible sources, drivers, dimmers, protocols, wiring, loads, dimming ranges, zones, programming, testing, and commissioning.

[Block 3 / Chapter 8: Quantity of Light / Core Ideas] What is the difference between illuminance and luminance?

Answer: Illuminance measures light arriving at a surface in footcandles or lux. Luminance measures light leaving a source or surface toward the viewer.

[Block 3 / Chapter 8: Quantity of Light / Core Ideas] Why should light levels be treated as a design check rather than the entire objective?

Answer: A numerical light level does not describe distribution, wall brightness, glare, contrast, shadows, color, atmosphere, or visual hierarchy.

[Block 3 / Chapter 8: Quantity of Light / Core Ideas] What tools can support early estimates of light quantity?

Answer: Early design can use rough lumen calculations, manufacturer data, spacing criteria, beam diagrams, room-surface assumptions, precedent, and professional experience.

[Block 3 / Chapter 8: Quantity of Light / Core Ideas] When are computer calculations useful?

Answer: They are useful when geometry, distribution, reflectance, glare, daylight, code documentation, emergency lighting, or point-by-point performance requires greater precision.

[Block 3 / Chapter 8: Quantity of Light / Vocabulary to Know] What are footcandles and lux?

Answer: Both measure illuminance. One footcandle equals one lumen per square foot, while one lux equals one lumen per square meter.

[Block 3 / Chapter 8: Quantity of Light / Vocabulary to Know] What are lumens?

Answer: Lumens measure the total quantity of light produced by a source or delivered by a luminaire.

[Block 3 / Chapter 8: Quantity of Light / Vocabulary to Know] What is reflectance?

Answer: Reflectance is the percentage of incident light that a surface reflects.

[Block 3 / Chapter 8: Quantity of Light / Vocabulary to Know] What is coefficient of utilization?

Answer: Coefficient of utilization estimates the portion of a luminaire's lumens that reaches the work plane after accounting for room geometry, surface reflectances, and distribution.

[Block 3 / Chapter 8: Quantity of Light / Vocabulary to Know] What is spacing?

Answer: Spacing is the distance between luminaires. It affects overlap, uniformity, shadows, and the overall lighting pattern.

[Block 3 / Chapter 8: Quantity of Light / Vocabulary to Know] What is a calculation model?

Answer: A calculation model is a digital representation of the room, surfaces, objects, luminaires, and assumptions used to predict lighting performance.

[Block 3 / Chapter 8: Quantity of Light / Apply It] Use the very simple lumen method to estimate average illuminance from 60,000 lumens in a 1,000-square-foot room.

Answer: Divide 60,000 by 1,000 to get 60, then divide by two. The approximate average illuminance is 30 footcandles.

[Block 3 / Chapter 8: Quantity of Light / Check Your Understanding] When is a rough calculation enough to guide a concept?

Answer: It is sufficient during early design for a regular room with conventional luminaires and light-to-medium surfaces when the goal is to confirm that the concept is reasonably close.

[Block 3 / Chapter 8: Quantity of Light / Check Your Understanding] Why can two rooms with the same average illuminance feel different?

Answer: Average illuminance does not describe wall brightness, contrast, distribution, glare, shadows, color, reflectance, source brightness, or visual hierarchy.

[Block 4 / Chapter 9: Quality of Light / Core Ideas] What factors contribute to the quality of light?

Answer: Quality includes contrast, shadow, modeling, sparkle, color, glare, uniformity, direction, source brightness, material response, and the relationship between light and architecture.

[Block 4 / Chapter 9: Quality of Light / Core Ideas] How does light create sculptural quality?

Answer: Directional light, highlights, gradients, shade, and shadow reveal curves, angles, depth, texture, and three-dimensional form.

[Block 4 / Chapter 9: Quality of Light / Core Ideas] How do size and scale influence lighting quality?

Answer: Luminaire size and scale affect source brightness, glare, proportion, intimacy, and architectural compatibility.

[Block 4 / Chapter 9: Quality of Light / Vocabulary to Know] What is modeling?

Answer: Modeling is the use of highlights, gradients, and shadows to reveal three-dimensional form.

[Block 4 / Chapter 9: Quality of Light / Vocabulary to Know] What is the role of shadows?

Answer: Shadows provide information about form, texture, depth, and direction. They can create visual interest but may interfere with tasks when poorly controlled.

[Block 4 / Chapter 9: Quality of Light / Vocabulary to Know] What is uniformity?

Answer: Uniformity describes how evenly light is distributed across a surface or space.

[Block 4 / Chapter 9: Quality of Light / Vocabulary to Know] What is material response?

Answer: Material response is how a surface reflects, absorbs, transmits, scatters, or redirects light based on its color, finish, texture, and transmittance.

[Block 4 / Chapter 9: Quality of Light / Vocabulary to Know] What is glare?

Answer: Glare is excessive brightness or contrast that causes discomfort or reduces visual performance.

[Block 4 / Chapter 9: Quality of Light / Vocabulary to Know] What is scale?

Answer: Scale is the relationship between the luminaire, its luminous effect, the room, the architecture, and the occupants.

[Block 4 / Chapter 9: Quality of Light / Apply It] Apply Chapter 9 to a textured stone wall.

Answer: Place a shielded linear or adjustable source near the wall to graze the texture, producing controlled highlights and shadows. Adjust its output and viewing angle to prevent glare.

[Block 4 / Chapter 9: Quality of Light / Check Your Understanding] How would you use light to reveal texture without creating harsh glare?

Answer: Use a controlled grazing angle, shield the source from normal sightlines, choose an appropriate beam and output, and test the material for bright reflections.

[Block 4 / Chapter 9: Quality of Light / Check Your Understanding] What does a high-CRI source solve, and what does it not solve?

Answer: High CRI generally improves color fidelity. It does not determine CCT, output, distribution, glare, contrast, flicker, dimming, efficiency, modeling, or visual comfort.

[Block 4 / Chapter 10: Light and Health / Core Ideas] How does light affect people beyond enabling vision?

Answer: Light can affect circadian rhythm, melatonin production, alertness, sleep, mood, behavior, focus, and physiological responses.

[Block 4 / Chapter 10: Light and Health / Core Ideas] Which factors determine whether lighting supports circadian rhythms?

Answer: Spectrum, intensity at the eye, timing, duration, and distribution all matter.

[Block 4 / Chapter 10: Light and Health / Core Ideas] Why must health-oriented lighting still address ordinary design concerns?

Answer: Circadian goals do not eliminate the need for visual comfort, glare control, accessibility, energy efficiency, maintenance, user control, and support for actual activities.

[Block 4 / Chapter 10: Light and Health / Vocabulary to Know] What is circadian rhythm?

Answer: Circadian rhythm is the approximately 24-hour biological cycle affecting sleep, alertness, hormones, body temperature, and behavior.

[Block 4 / Chapter 10: Light and Health / Vocabulary to Know] What does timing mean in circadian lighting?

Answer: Timing describes when light exposure occurs. Morning and daytime exposure can support alertness, while strong blue-rich exposure at night can interfere with sleep.

[Block 4 / Chapter 10: Light and Health / Vocabulary to Know] What is spectrum?

Answer: Spectrum is the distribution of wavelengths contained in the light.

[Block 4 / Chapter 10: Light and Health / Vocabulary to Know] What is exposure?

Answer: Exposure combines the amount of light reaching the eye with its timing, duration, spectrum, and distribution.

[Block 4 / Chapter 10: Light and Health / Vocabulary to Know] What is visual comfort?

Answer: Visual comfort means occupants can see without disturbing glare, harsh contrast, flicker, eye strain, or distracting source brightness.

[Block 4 / Chapter 10: Light and Health / Vocabulary to Know] What is user control?

Answer: User control allows occupants to adjust lighting according to their activities, abilities, comfort, and preferences.

[Block 4 / Chapter 10: Light and Health / Apply It] Apply circadian-supportive lighting to a classroom.

Answer: Provide useful daylight and cooler, stronger vertical light during the morning and daytime while controlling glare. Coordinate the system with student ages, schedules, activities, daylight availability, and user controls.

[Block 4 / Chapter 10: Light and Health / Check Your Understanding] What is the difference between a bright space and a biologically supportive lighting strategy?

Answer: A bright space merely has a high light level. A biologically supportive strategy delivers the appropriate spectrum and eye-level exposure at the correct time and for sufficient duration.

[Block 4 / Chapter 10: Light and Health / Check Your Understanding] Which users, schedules, and behaviors should be understood before proposing circadian lighting?

Answer: Understand occupant ages, sleep and work schedules, shift work, daylight access, screen use, health conditions, visual needs, length of occupancy, and desired periods of alertness or rest.

[Block 4 / Chapter 11: Lighting Design Approach / Core Ideas] What information should be collected at the beginning of lighting design?

Answer: Study the users, activities, visual tasks, architecture, daylight, materials, design concept, atmosphere, controls, energy goals, codes, budget, maintenance, and project constraints.

[Block 4 / Chapter 11: Lighting Design Approach / Core Ideas] Why is a lighting-design criteria matrix useful?

Answer: It makes priorities, requirements, assumptions, conflicts, and missing information visible and keeps decisions connected to the program.

[Block 4 / Chapter 11: Lighting Design Approach / Core Ideas] What makes a strong lighting-design argument?

Answer: It connects each decision to a user need, activity, spatial goal, or constraint and supports it with experiential and technical evidence.

[Block 4 / Chapter 11: Lighting Design Approach / Vocabulary to Know] What are programming and observation?

Answer: Programming identifies users, activities, needs, goals, and constraints. Observation documents actual spatial, daylight, material, and behavioral conditions.

[Block 4 / Chapter 11: Lighting Design Approach / Vocabulary to Know] What is a lighting criteria matrix?

Answer: It is an organized record of lighting goals, functional requirements, atmosphere, layers, technical criteria, constraints, controls, and verification questions for each space.

[Block 4 / Chapter 11: Lighting Design Approach / Vocabulary to Know] What is a layered strategy?

Answer: A layered strategy identifies the separate purposes of light in the space and how those layers work together.

[Block 4 / Chapter 11: Lighting Design Approach / Vocabulary to Know] What is schematic design?

Answer: Schematic design converts the criteria and layered strategy into preliminary luminaire types, locations, diagrams, control zones, and relationships.

[Block 4 / Chapter 11: Lighting Design Approach / Vocabulary to Know] What is coordination?

Answer: Coordination aligns lighting with architecture, ceilings, structure, electrical systems, controls, codes, consultants, budget, and construction.

[Block 4 / Chapter 11: Lighting Design Approach / Vocabulary to Know] What is verification?

Answer: Verification confirms that the proposed or installed system meets its functional, experiential, technical, and code criteria.

[Block 4 / Chapter 11: Lighting Design Approach / Apply It] Apply the lighting-design approach to a hotel corridor.

Answer: Observe circulation, doors, signage, artwork, finishes, daylight, and ceiling constraints. Establish safety and atmosphere criteria, layer ambient and focal light, select sources and luminaires, coordinate controls and code, and verify performance.

[Block 4 / Chapter 11: Lighting Design Approach / Check Your Understanding] What belongs in a lighting-design criteria matrix?

Answer: Include users, activities, atmosphere, tasks, focal priorities, daylight, light levels, color, contrast, layers, sources, luminaires, controls, energy, code, maintenance, budget, constraints, and verification questions.

[Block 4 / Chapter 11: Lighting Design Approach / Check Your Understanding] How would you defend one lighting decision using experiential and technical evidence?

Answer: State the intended experience, such as making a corridor feel welcoming and easy to navigate. Support it technically with controlled wall illumination, suitable CCT and CRI, adequate illuminance, glare protection, efficient sources, and appropriate controls.

[Final Review / Final Review / Cumulative Vocabulary] What is layered design?

Answer: Organizing light by different purposes—such as ambient, task, focal, daylight, and decorative—to create a coordinated composition.

[Final Review / Final Review / Cumulative Vocabulary] What is the difference between CCT and CRI?

Answer: CCT describes the warm-to-cool appearance of white light. CRI describes how reliably objects' colors appear under it.

[Final Review / Final Review / Cumulative Vocabulary] What is efficacy?

Answer: The quantity of light produced per watt, measured in lumens per watt.

[Final Review / Final Review / Cumulative Vocabulary] What is the difference between luminance and illuminance?

Answer: Luminance is light leaving a source or surface toward the eye. Illuminance is light arriving at a surface.

[Final Review / Final Review / Cumulative Vocabulary] What is distribution?

Answer: The direction and pattern in which a source or luminaire sends light.

[Final Review / Final Review / Cumulative Vocabulary] What is dimming?

Answer: Adjusting the output and power use of a lighting system below full intensity.

[Final Review / Final Review / Cumulative Vocabulary] What is daylight response?

Answer: Automatically or manually adjusting electric light according to available daylight.

[Final Review / Final Review / Cumulative Vocabulary] What is a criteria matrix?

Answer: An organized record of the needs, priorities, technical criteria, constraints, and verification questions for each space.

[Final Review / Final Review / Cumulative Design Sequence] What is the cumulative lighting-design sequence?

Answer: Observe the space; name needs and constraints; set criteria; choose layers; select the source and luminaire; coordinate controls; check quantity and quality; document and verify.

[Final Review / Chapters 1-11 Synthesis / Be Able to Explain] Why is lighting a layered design problem?

Answer: No single type of light can support every task, surface, mood, focal point, and time condition. Layers assign different responsibilities to different components.

[Final Review / Chapters 1-11 Synthesis / Be Able to Explain] How do source, luminaire, control, and space interact?

Answer: The source produces light, the luminaire shapes and shields it, controls determine when and how it changes, and the space determines how it performs and is perceived.

[Final Review / Chapters 1-11 Synthesis / Be Able to Explain] What is the difference between quantity and quality of light?

Answer: Quantity describes measurable light output or illuminance. Quality describes distribution, contrast, color, shadows, glare, material response, atmosphere, and comfort.

[Final Review / Chapters 1-11 Synthesis / Be Able to Explain] How does daylight change the electric-light strategy?

Answer: Electric lighting should supplement daylight through separate zones and controls. Output should decrease where daylight is sufficient and increase as daylight fades.

[Final Review / Chapters 1-11 Synthesis / Be Able to Explain] Why do health, comfort, maintenance, and code belong in early design?

Answer: They affect source and luminaire selection, placement, controls, architectural coordination, access, energy use, cost, and constructability.

[Final Review / Chapters 1-11 Synthesis / Be Able to Do] What should you identify when reading a cut sheet?

Answer: Identify source type, delivered lumens, wattage, efficacy, CCT, CRI, distribution, beam angle, aperture, dimensions, mounting, driver, dimming, controls, ratings, life, photometric data, and certifications.

[Final Review / Chapters 1-11 Synthesis / Be Able to Do] What information may need to be verified because it is missing from a cut sheet?

Answer: Verify dimmer compatibility, minimum dimming level, flicker, glare data, color consistency, driver access, thermal limits, code certification, emergency operation, and installation requirements.

[Final Review / Chapters 1-11 Synthesis / Be Able to Do] How do you select a luminaire for a stated spatial goal?

Answer: Identify the surface, object, task, or atmosphere being supported. Select the distribution, optics, shielding, aperture, mounting, output, color quality, scale, controls, and maintenance characteristics that create that result.

[Final Review / Chapters 1-11 Synthesis / Be Able to Do] What should a layered-lighting sketch show?

Answer: Show important surfaces, objects, tasks, and destinations; label the layers; draw the direction and spread of light; identify daylight openings and control zones; and note where layers overlap.

[Final Review / Chapters 1-11 Synthesis / Be Able to Do] Name a control method and its coordination needs.

Answer: Daylight-responsive dimming requires daylight zones, correctly located photosensors, compatible drivers and dimmers, suitable wiring or communication, calibrated setpoints, programming, and commissioning.

[Final Review / Chapters 1-11 Synthesis / Be Able to Do] How do you defend a lighting choice with experiential and technical evidence?

Answer: Explain what users should see or feel, then connect that goal to measurable characteristics such as distribution, output, CCT, CRI, glare control, efficacy, dimming, maintenance, or code compliance.

[Final Review / Chapters 1-11 Synthesis / Practice Prompt] Write a five-sentence lighting concept naming the users, activity, atmosphere, three layers, source/luminaire strategy, and one control or daylight response.

Answer: Students and instructors need comfortable light for reading, discussion, computer work, and presentations. The classroom should feel alert, organized, and visually comfortable. Indirect ambient light will soften the room, direct task light will support the desks, and focal light will emphasize the teaching wall. Neutral, high-CRI LED direct/indirect pendants will be paired with a separately controlled wallwashing system. Daylight sensors will dim the window-side luminaires, while occupancy sensing and scene controls will support class, presentation, and cleaning modes.

[Final Review / Chapters 1-11 Synthesis / Check Your Understanding] What is the primary visual task in the room?

Answer: It is the activity requiring the clearest and most reliable visibility, such as reading, preparing food, viewing artwork, recognizing faces, or navigating.

[Final Review / Chapters 1-11 Synthesis / Check Your Understanding] What should be brightest, darkest, or most visually important?

Answer: Important tasks, destinations, faces, signage, artwork, or architectural features should receive visual emphasis. Background areas can be quieter, while dark areas must remain intentional and safe.

[Final Review / Chapters 1-11 Synthesis / Check Your Understanding] Which source and luminaire characteristics support the design intent?

Answer: Consider lumen output, CCT, CRI, efficacy, life, lumen maintenance, heat, flicker, dimming, distribution, beam angle, optics, shielding, aperture, mounting, scale, ratings, and access.

[Final Review / Chapters 1-11 Synthesis / Check Your Understanding] How will the design respond to time, daylight, occupancy, and maintenance?

Answer: Use schedules or scenes for time, daylight sensors and zones for daylight, occupancy or vacancy sensors for presence, and accessible, durable components for maintenance.

[Final Review / Chapters 1-11 Synthesis / Check Your Understanding] What information must be verified before the design can be documented?

Answer: Verify dimensions, ceiling conditions, daylight, reflectances, target light levels, photometric performance, spacing, control compatibility, circuiting, codes, product ratings, maintenance access, budget, availability, and coordination with other systems.