The architecture of light: architectural lighting design concepts and techniques. A textbook of procedures and practices for the architect, interior designer and lighting designer pdfdrive com

Lighting to accent architectural details and features
The second element of revealing architecture is to identify the nuances and architectural features that help define the structure and logic of a space. We are looking for the expressions of structure; the columns and soffits that define a space or the coves, coffers and vertices that define shape. Most of these architectural features will jump out at us from our plans and sketches. We treat them much the same as we treat other “accentable” objects. The only difference is that in addition to lighting them just to draw attention, we are helping to express the forms and structural logic of a space and how the space is supported.
Figure 4.4 A few well-placed pieces of light add dimension and depth to architecture.
LAYER 5: LIGHTING FOR TASKS
The last layer that we discuss in our course of five layers is the light that we introduce to a space strictly for the sake of performing visual tasks. These tasks can be as specific as reading paperwork or as subtle as navigating a lobby. We save this thought process for last because as we apply light to address all of the previous layers, it is likely that the light will interact with our space to deliver the light necessary for our visual tasks as well. If we design with consideration to
all of our other layers of light, we will have a rich, dynamic emotional
experience. If our design has failed to accommodate for our tasks, we can augment by adding additional luminaires or localized task lighting. However, if we neglect the more ethereal layers, like choreography and mood, it is unlikely that we will ever be able to regain those subtle aspects of functionality.
Lighting for tasks also happens to have an enormous wealth of precedent and information available to help a designer determine what light levels are appropriate for specific tasks. There are reference books full of charts and tables that can be used by anyone for solving task lighting problems.
What should be avoided is task lighting serving as the only type of light
considered for a space. In a good design approach, it is merely one of five layers, and the last one at that.
We will investigate the specifics of providing light for tasks as it is a
critical component of the functionality of a space. But it must never overshadow the thought and design of the other layers that truly infuse unique experience into our environments.
Figure 4.5 Task illuminance should consider visual comfort and performance.
To become comfortable and confident with the layer system, we must remind
ourselves that none of the layers are complete solutions on their own. Knowing this, we can free ourselves to address light how and where we want it. If we isolate each of these layers as a unique thought process, we can stand back and watch our space nearly build itself as a collection of well thought-out applications of light onto specific surfaces.
Our success with this method relies on reminding ourselves, once again, that lighted surfaces are our medium. All of the light ingredients we add through this layered approach are pieces of light painted onto specific objects and architectural elements
Additionally, our understanding of perception tells us that the most
efficient use of our lighting resources is light applied to vertical surfaces and the upright accented objects that we place throughout our designed spaces.
If we spend our efforts designing the right light on the right surface, the
more technical task of choosing how to deliver that light will be easier and can be executed with confidence.