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IDL - Bozeman eNEWS - April 2013 - Vol. 6 No. 4

Entries in lighting (9)


Daylighting Guide for Commercial Offices - Part 1

Benefits of Daylit Offices

Providing a daylit space creates a healthier and higher quality interior environment.  Increased individual productivity and human comfort is also found with daylit spaces.  Natural daylight allows for mental and visual stimulation necessary for proper regulation of human brain chemistry.  In addition to health benefits, allowing daylight to enter the space shows substantial energy savings throughout the building.

Design Inquiries for Designing Daylit Offices

Before you begin the spatial programming of the building, a few items should be in the forefront of your mind when deciding.  These inquiries include interior surface design and selection, shading for glare control, and shading for thermal comfort and heat gain control.  Interior surface selection has the opportunity to increase the daylight appearance dramatically, while shading control allows the building to effectively take advantage of natural daylight.

Best Practice Foot Candle Levels

Another thing to keep in mind when designing daylit spaces are the common lighting levels for different spaces.  The following footcandle levels describe the “best practice levels,” or in other words, the goals to achieve as opposed to the average level attained. 

            Reception Area:  5 fc   

           Working Spaces for Simple Visual Tasks:  10 fc

            Performance of Visual Tasks of High Contrast and Large Size:  30 fc

            Performance of Visual Tasks of High Contrast and Small Size or Visual Tasks of Low Contrast and Large Size:  50 fc

            Performance of Visual Tasks of Low Contrast and Small Size:  100 fc

Programming Criteria

When spatially programming the space, ask the following of each space:  Is daylight important for this space?  Are views to the exterior important?  How frequently is this space used?  What time of the day and time of the year will the space be occupied?

An example spatial programming might include the following:  Open Office Space – Daylight and view desired, occupants have individual glare control.  Private Office Space – Daylight and view desired, occupants have individual glare control.  Support Spaces – Minimal daylight or view opportunities required.  Building Core Spaces – No daylight or view opportunities are necessary.

After you have specified the spaces that desire daylight, ask the following of each of the daylight spaces:  What are the minimum daylight requirements?  How crucial is direct sun control?  What is the minimum footcandle level for the task that is performed in this space?  What might be the ideal solar orientation?  What might be the best strategy for providing daylight?  Side lighting?  Top lighting?  Are there maximum light levels required?

TIP for Programming Spaces  

“Daylight and view are typically preferred in areas that are most heavily occupied for extended periods of time, such as open office areas.  Corridors, circulation paths, break areas, copy/print zones or other short term gathering spaces may be tolerate of direct sunlight whereas fixed workstations or reception desks will almost never remain comfortable with the presence of direct sun.”

Space Planning

It is well known that open offices are typically occupied for almost the entire work day, while private offices are only occupied one-third of the time.  Also, since open office layouts are communal spaces, the shading blinds are not adjusted frequently.  This differs from private offices where the ownership is clearly defined, and the blinds are adjusted frequently.  The following values are the recommended distances from the glazing (illumination source) needed to provide adequate daylight and views to all spaces in need.

Locate open office areas within 18-20 feet of the perimeter zone (glazing wall) and at areas where direct sun penetration is limited (North) or less varied (South).

Position individual offices where low direct sun may otherwise be problematic (East and West), while allowing for individual control within the space with manual shading devices.

Top Lighting Strategies

Studies show that top lighting provides the most effective daylight into the building.  Designing them to be a diffuse light source easily takes care of any glare potential.  Compared to side lighting, top lighting covers a much larger area of the space.

Stay alert for part 2, discussing window coverings, shading and exposure tips, furniture influence, and daylighting controls.  For read the full article, click here.


Fall 2011 Education Series Announced

The Seattle Lighting Design Lab has announced the Fall 2011 Education Series.  There are several chances to catch the series, including one in Missoula, MT.  The series includes two classes, one in the morning and the other in the afternoon.  The morning class is titled What’s New in Lighting: 2011.  The afternoon session is titled Matching Technologies to Applications.  Registration for the fall series begins in mid-August.

For more information, see full class descriptions, locations, and registration fees below.  Also, visit the Seattle Lighting Design Lab website here.

Morning Class 10:00am – 12:00pm

                What’s New in Lighting: 2011 – The fall tradition continues of reviewing this year’s latest innovations in exterior and interior lighting luminaires, lamps, ballasts, publications, controls, and components.  Also included in the class are award winning products recognized throughout the industry.  This class is intended for those already familiar with basic lighting terminology (i.e. CRI, CCT, L/W, CMH, LED, OLED etc.) but can be of interest to those just entering the lighting industry as well.  Instructor: Andrew Pultorak LC, MIES.

Lunch 12:00pm – 1:00pm

Afternoon Class 1:00pm-3:00pm

                Matching Technologies to Applications – Whether new construction, a major renovation, or a simple retro-fit, the challenge is to develop a lighting scheme which takes into consideration the condition of the existing space, the tasks being performed, energy codes, and lower power consumption.  In addition, the effects of coming legislation must also be considered: i.e. what really happens to T12 lamps in July of 2012?  The new design must also meet accepted standards of lighting quality and quantity while making economic sense.  This class will look at a number of interior and exterior spaces, and the steps necessary to make decisions about available lamps, ballasts, luminaires, controls, and how they may be successfully applied.  Instructor:  Jeff Robbins LC, MIES.

Registration Fees:

                Standard:  $30.00 per class

                Full Time university/college students:   $10.00 per class

                Employees of a LDL sponsoring organization:  $10.00 per class

                Lunch is included in registration

Locations and Dates:

                Tacoma, WA: Tuesday, September 20th, Courtyard by Marriott, (Mt. St. Helen’s Room) 1515 Commerce Street, Tacoma, WY 98402

                Portland, OR: Tuesday, September 27th, Center for Architecture: AIA Portland, 403 NW 11th Avenue, Portland, OR 97209

                Boise, ID: Friday, September 30th, Idaho AGC Training Center 1649 West Shoreline Drive, Boise, ID 83702

                Everett, WA: Thursday, October 6th, Snohomish County PUD (Commissioners Room) 2320 California St, Everett, WA 98201

                Missoula, MT: Tuesday October 11th OR Wednesday October 12th OR Thursday October 13th.  Location TBD.

                Bellevue, WA:  Wednesday, October 19th, Puget Sound Energy (Forum Room), 10885 NE 4th Street, Bellevue WA 98009

                Seattle, WA:  Tuesday, October 25th, Lighting Design Lab (Classroom), 2915 4th Ave S, Seattle WA 98134


Reminder Register Now!

Just a friendly reminder that Seattle's Lighting Design Lab is en-route to Bozeman to share with us what's new in the lighting design world!  On Wednesday April 28, the LDL will set up shop at the Homewood Suites for two lectures.

Registration is currently open. 
For more information go to lightingdesignlab.com


Schedule includes

Morning Session: 10:00 am - 12:00 pm

The Impact of New Legislation on Lighting, presented by Andrew Pultorak, LC, MIES, will cover energy legislations as they relate to lighting legislation and codes that may impact your businesses.  He will answer questions like "Is the incandescent really being banned forever?" "Why am I hearing that T12 and some T8 lamps are going away?" and "How will these changes effect how I may need to comply with lighting energy codes?"


Lunch is included, with registration fee

Afternoon Session: 1:00 pm - 3:00 pm

Effective Use of the Newest Lighting Controls -- Beyond the Basics, Effective Use of the Newest Lighting Controls -- Beyond the Basics, presented by Jeff Robbins, LC, MIES, will focus on complying with local energy codes with the use of occupancy sensors and daylight controls.  Recent advances in these technologies are making it easier to reach energy usage goals, but their correct operation is not easy to understand.

Cost is $30 per session, per attendee
(students and employees of LDL sponsors -- cost is $10 per session)

Wednesday April 28
Homewood Suites
1023 Baxter Lane, Bozeman 59715

Registration begins March 1 at lightingdesignlab.com


Seattle Lighting Design Lab

Effective Use of the Newest Lighting Controls -- Beyond the Basics, presented by Jeff Robbins, LC, MIES, will focus on complying with local energy codes with the use of occupancy sensors and daylight controls.  Recent advances in these technologies are making it easier to reach energy usage goals, but their correct operation is not easy to understand.

LDL Classes Re-Cap

Missed the Fall LDL Classes?  Here's the recap:

What's New in Lighting: 2009

Andrew Pultorak, LC, MIES spent a couple of hours going through some of the latest lighting products from LightFair 2009 (including innovation awards), the IES 2008 Progress Report, and the NGL 2008 design competition winners.  The presentation included interior luminaires, lamps, ballasts, daylighting controls, specialty luminaires, and exterior luminaires.  All of the products covered can be found in his powerpoint slide (pdf) on the LDL website (look at center of main page).

Throughout his presentation, Pultorak also mentioned several resources available to building professionals regarding lighting, referring participants to LightFair International, IES, Lightsearch, Elimit, Next Generation Luminaires, and their own website, where you can find a variety of resources that they have compiled for quick and efficient lighting design.

Effective Lighting Retrofits: The Basics and Beyond

Jeff Robbins, LC, spent the afternoon giving a Retrofit 101 class.  He went through the basics of lighting retrofits and showed how easy it is to calculate whether a retrofit system will save money or not, as compared to current or other systems.  He then discussed some potential systems and showed how controls can increase the savings benefit in a retrofit.  Finally, he showed some useful resources produced by the LDL, ASHRAE, and gave links for further information.  While you may have missed all of the handy quick-calc equations he threw out during the presentation, much of what of his information can be found in his powerpoint presentation (pdf) on the LDL website (look at center of main page).


Did You Know?

The Seattle Lighting Design Lab has created a series of Commercial Lighting Guides for offices and warehouses. Based on the ASHRAE 30% Design Guides, these 2-page guides provide quick lighting layout solutions for common design problems. Access them here!