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“Façade Lighting is a Social Phenomenon”

By: AR. ASHISH BAHAL | Posted on: Saturday November 16, 2019

Please brief on various Architectural Façade Lighting Solutions.

Architectural lighting for façade can be done by various techniques primarily: direct view, grazing, washing, accentuating, and flooding. LED solutions are available to render these effects with various sizes, wattages, colours, lumen packs, program abilities and fixing possibilities as per the context.

Please List a few Checkpoints to Consider for Best Façade Lighting Solutions.

To achieve good façade lighting design, one should consider the following considerations

How to light?

Responding to the macrolevel context – city level, master plan, etc.

Responding to the typology of function – retail, office, healthcare, etc.

Responding to the concept of the building – façade elements, patterns, contrasts, etc.

Responding to the microlevel context– immediate neighbourhood, local milieu

What to light? (Viewpoints, etc.)

Responding to the microlevel context – controlling glare, safety of pedestrians, etc.

Responding to the typology of function-specific spaces, elements, etc.

Responding to the concept of the building – columns, windows, arcade, voids, etc.

Also, it is imperative to take into account the height of the elements, position of luminaires, width of the elements, surface texture, reflectance and colour of the façade elements. One cannot avoid to also check peripheral lighting in the surroundings, proximity of light sources to people, camouflaging of luminaires, and weight of luminaires as well as light pollution.

Please Throw some Light on the Standards, Local Norms and Regulations for Outdoor Lighting.

Kirikkale Nur Mosque Turkey
Kirikkale Nur Mosque, Turkey

Façade lighting in India does not fall under any regulation as far as my personal knowledge stretches. On the contrary, outdoor lighting does have multiple standards for lighting levels, glare and lighting pollution as well as on energy consumption.

Façade lighting has been although covered under the Bureau of Energy Efficiency from energy consumption perspective in ECBC 2016. As far as light pollution is concerned, LEED ratings control the number of lumens being thrown above nadir (0 degrees) as per the classification of the building’s importance and location. It is startling to know that light pollution is on the rise in India and it is important to have a balanced approach.

What is the Impact of Façade Material on Façade Lighting?

The texture of the material of the façade is the smoothness or roughness of the surface of a material. This determines the design intent of lighting as follows:

Highly textured surfaces: Should focus on enhancing its texture through effects like grazing.

Smooth surfaces are best suited for a homogeneous impact though effects washing and flooding.

Glass/ACP façades are not the best surfaces for illumination from a distance. These façades need lighting to be weaved as part of the glass sub-structure, much in advance, whether direct view, LED screen, lines of light or light-filled voids. Glass façades are being welcomed with new-age lighting techniques, just that the installation of the lighting should happen with the façade execution.

It cannot afford an afterthought, else the whole design will become an eyesore during the daytime. Please brief on the latest trends façade lighting controls. Lighting controls are of extreme importance as there is no regulation of this new age possibility so far.

Baron Palace Cairo Baron Palace Cairo

Lighting controls not only add various possibilities to the façades from an experiential perspective (multiple programs hour- wise, day-wise, occasion-wise, colour-wise, speed-wise, interface wise), but it also helps regulate brightness, energy monitoring as well as ease operation and maintenance of the installation. In addition, with the advent of the Internet of Things, it is now possible to monitor, manage and program dynamic façade lighting installation using software and system architecture which are based on cloud technology. So remote lighting controls are the latest possibility with multiple benefits.

It is Important to go for Sustainable Façade Lighting having Responsibility for Nature, Resources and the Environment. How can we Achieve this?

Façade Lighting or Architectural Lighting is a social phenomenon even if it involves a privately built form. With this new urban canvas which is receptive to dynamic, public-source content it is imperative to maintain restraint from going overboard in terms of content, to begin with. Apart from the same, we should respect our co-habitants of the planet (birds, animals, plants etc.) and control light pollution as well control brightness/resultant glare from these installations. It should also not distract vehicle drivers leading to accidents.

AR. ASHISH BAHAL

Lead Architect + Experience Designer Faculty

AR Ashish Bahal is a professional with a Bachelor’s Degree in Architecture (SPA Delhi, 2001) with over 18 years’ qualitative experience in design, construction management in interiors, buildings, real estate, industrial and development sector. He has a diverse and unique work experience as an entrepreneur, architect, interior designer, project manager, development expertise and technical marketer with demonstrated ability to focus on technologies, interiors, infrastructure, social development, networking, habitat, construction, lighting and architecture. AR Ashish Bahal works for Signify as part of the National Application Specialist and brings green design and aesthetic approach forth through his work. He has worked in many high profile lighting projects with Signify/ Philips. He is also a permanent faculty at the Philips Lighting Academy.

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