Before The Archtiect - Residential Interior Lighting Design

Lighting Design: 2

BEFORE THE ARCHITECT – DREAM HOME DESIGNING BACKGROUND – UNIQUE HOME DESIGN ARTICLES

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FINE HOME INTERIORS LIGHT DESIGN GUIDELINES A/K/A DREAM HOME NIGHTLIGHT DESIGN STANDARDS:

LIGHT DESIGN PART 2 - THE MATH SYSTEM OF DESIGN

YOU MAY FREELY QUOTE THE AG WITH PROPER ATTRIBUTION

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Part 2: The Math [hang on mathphobes, this stuff boils down to one number times another number equals a third number - like 2x6=12, like – like that you can take to a home light professional who can deliver the illuminance goods]

Dream Home Interiors Nightlight Schedule

In Part 1, we were presented with a set of rules and restrictions for home interiors light in order

To achieve home interiors light standards more suitable to aging eyes (which the literature allows begin to need extra home light in their 40s)

To translate these new home light design standards into numerical targets of common metrics readily identifiable in the retail home light marketplace

	lpW (see Part 1 for variables' definitions) data have been around quite a while
	CRI and CCT data were hard come-by up until the last few years, as fluorescent makers “warmed up” their bulbs, and, particularly, their compact fluorescent lamps, or CFLs

Comment: OK, let’s try on an example.

A bedroom has an ambient fc target value of 40, i.e., 40 lm/ft². That’s a given in AG’s book.

The bedroom we’re targeting in this example is, say, 200 ft² in floor surface area.

40 lm/ft² multiplied by 200 ft² = 800 l, our lumen target.

The author is not immediately, if at all, interested in that with which the space gets lighted, that is, not materials at least in so far as luminaires are concerned, but methods are entirely another matter of keen interest to Before The Architect and would usually be extensively specified and guidelined -

Except that it be lighted evenly

Not interested in specific luminaires –

	By type
	By size
	By site

Immediately, interest is in determining lumens for given spaces

Materials are for the knowledge of home light pros and decorators and the personal sense of clients

Comment: Again, Delores, it’s the lumen number for a space coming from the Rules that bridges the gap between your home light interests and intentions and the folks who know a lot about home light but not a lot about you

Comment: Told you mathphobes so: multiply 40, 70, or 100 times the square feet of respectively lighted surface area, and take it to a home light professional along with the AG’s rules – The Basics and The Math.

This Nightlight schedule was presented with extensive notes, including

	Selected types of luminaires are indicated in order to keep perspective broad
	Certain materials are preferred, e.g., brilliant reflectors to get the maximum illuminance out of CFLs
	Rules of artificial, or mechanical, illuminance design are repeated as a fall-back reference
	Methods are highlighted, e.g., layering, dimmers, under-cabinet skirting, etc.
	Materials are recapped, e.g., pendant, lantern, cove, etc.
	Light quality hurdles are indicated
	Site-specific concerns about home light in cooler spaces, potentially hazardous glare, cold-weather fluorescent materials and methods, etc. get prominence

The Schedule and related notes get translated in the Electrical Plans in plan view, as excerpted below

This is not about beating a dead horse: texted table, extensive notes, now a floor plans expression of electrical wiring including home light, whew

This is about taking the wiggle-room out of electrical wiring and home light design in application

	Let the house plan designing be done by home designers guiding clients
	Then let the installation, the fine building begin

Light Highlights in an Electrical Plan, View

Let’s inspect this fine home drawing for conformity to our home light standard

All but 2 switch controls are “D” for dimmer

Light switch control between bath and bed (space to the left and above) are “L” for lighted

Sanity light is properly set at 66 linear inches over finish floor level and

Luminaires are spaced 30 linear inches apart and centered over the lavatories

The closet light switch control is pressure-sensitive, relieving occupants from excess visual and physical distraction in moving between spaces

Foot candles (fc) are identified by

	Space
	Value and
	Type

Distinction is clearly made that luminaires are illustrative, i.e., final choices of luminaire types, numbers, and sites are to be done by others whose day job it is to do so

Centerlines are depicted for certain home light groups because the author has abundant experience in observing how cock-eyed some luminaires get applied when left to installers

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