40x56x14 Lighting layout

moserjj · Sep 5, 2017

I'm looking for lighting input on my 40x56x14 shed with white liner panel on the ceiling and walls. Drawing attached showing door locations and future lift placements (2 post first, then 4 post).

After following the "best fixture ever" thread, I'm considering the 4' LED strip lights or the 2' LED high bay style.

Looking for 100fc at 30".

Thanks!

moserjj · Sep 5, 2017

Adding larger image

moserjj · Sep 5, 2017

Platonic Solid · Sep 5, 2017

moserjj said:
12x12 garage doors, 2 in front and 1 in back. 3' spacing between them

moserjj said:
My new build is 40x56, 14' ceilings. Walls and ceiling will be white liner panel, no windows other than a strip in each of the 3 - 12' garage doors. I'm ready for lights and was thinking 4 rows of the LED strip (12 in each row). I bought 3 from bees and the 2200lm bulbs to test. I like the strips since they would be up high and not hanging down like the james 2' high bay (if I understand the mounting options correctly). 48 fixtures is a ton of them to install though. Any input on lighting layout? 4 strips seems to work better with my garage door and lift layout but 3 rows could work too.

Just putting all your info in one place for the moment.
Is the interior ceiling flat or pitched?

moserjj · Sep 5, 2017

Ceiling is flat

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Platonic Solid · Sep 5, 2017

This is using The Best bang for the buck LED bypass 4ft 2-lamp strip light as of 8/25/2017:

Qty.120
22W LumeGen 4ft single end bypass tube
2640 Lumen
120° Beam Angle
$6.99 ea.
Free Shipping over $25

Qty.60
Maxlite LSS2XT8USE4803 75303 2 Lamp T8 LED Tube Ready 4 ft Linear Utility Strip Light Fixture Pre-Wired [Min Qty: 10]
$15.96 ea. x 10 = $159.60 (Free shipping over $95)

k-dawg said:
coupon "10offshine" to get $10 off

(pic linked to larger image)

Mean fc @ 30" = 103
Total Cost: $1800
Total Lumens: 316800
Total Load: 2640 W

moserjj · Sep 5, 2017

Excellent thank you! And wow, that is alot of fixtures! Any recommendation about instead going with the often recommended 110/165w James high bay led instead?

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Platonic Solid · Sep 6, 2017

Just for reference, here's the same layout using the Diva Light Tube (link)

Mean fc @ 30" = 64
Total Cost: $1920
Total Lumens: 264000
Total Load: 1980 W

I'll get to other options this evening.

D94R · Sep 6, 2017

I used the Diva tubes in my garage which is that exact size. I have 5 rows of 3 dual-strip lights and consider that to be plenty. The corners are darker, and if I put work areas in those I'll probably add a light in them, but for now they are not useless.

So either those calcs are wrong (probably not), 100fc is more than needed unless harvesting body parts in your garage, or the Diva's put out more light than advertised?

I did not do a fc, lumen, whatever calculation for my setup, I just bought what I thought I needed and went with it. Cost was around $500.

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Platonic Solid · Sep 6, 2017

I am not suggesting that the Diva Lights are by any means useless. I am saying that the LumenGen lamp is more suitable for the application (higher lumen output and narrower beam spread). It's like buying a computer = it's never a good time to buy cause tomorrows performance and/or price will always be better.

There's nothing wrong with using fewer fixtures and adding more later or adding task lighting as needed. I'm just providing an ideal scenario that limits the need for task lighting. One could easily cut the number of fixtures in above layouts in half and get half the output.

In other words: Please don't shoot the messenger. I have no allegiance to any brand or distributor.

cybrdyke · Sep 6, 2017

D94R said:
100fc is more than needed

^^^^^ This.

Most folks dont know the difference between 40-60-80-100 foot-candles. It's not their fault. How could they possibly know? So, to CYA, they just ask for the highest number.
And designers, not necessarily knowing how a space will be used, or who will be using it, will also CYA and choose the highest number.
Walk into any large warehouse with decent lighting and you're probably looking at 20-30 fc. Walk into any large factory and you're probably looking at 30-40 fc.

CD

D94R · Sep 6, 2017

Platonic Solid said:
In other words: Please don't shoot the messenger. I have no allegiance to any brand or distributor.

No shots fired :thumbup:

Just showing some actual vs calculated information for a comparison.

I'd imagine double the fixtures in my barn would give me a tan. :shocking:

Platonic Solid · Sep 6, 2017

Here's my perspective:

Start with 100fc @ 30” workplane in an empty space.
Add stuff, lots of stuff, lots of non-reflective stuff = Deduct 20fc.
Add dirt, and more dirt over time = Deduct another 20fc.
We’re already down to 60fc @ workplane and haven’t addressed LED lumen output depreciation.

Do the same thing starting with 50fc in an empty room and you’ll have to add more fixtures in the very near future.

rrangus · Sep 6, 2017

Not to comment on the LED's or your layout, but I built my shop 30 years ago and installed lighting to give me 100 fc on the floor. It is not over kill, but very good for doing fine detail work.

Platonic Solid · Sep 6, 2017

Qty.20
Aleo Slim Linear LED High Bay (Mfr link), 2 Foot, 95 Watt, 12445 lm, SLB2-95/850/F XE (PDF link) $91.25 (Dist link)
Confirm that it comes with frosted lens as part number on distributor website is incomplete.
Part number above is complete.

Mean fc @ 30" = 92
Total Cost: $1825
Total Lumens: 248900
Total Load: 1900 W

Platonic Solid · Sep 6, 2017

Qty.20
Alphalite Slim Linear LED High Bay (Mfr link), 2 Foot, 110 Watt, 14410 lm, EHB2-110/850 (PDF link) $91.25 (Dist link)

Mean fc @ 30" = 106
Total Cost: $1825
Total Lumens: 288200
Total Load: 2200 W

moserjj · Sep 6, 2017

Great, thank you!!

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Platonic Solid · Sep 6, 2017

Take note that the high bay fixtures are farther from the walls than the retrofit bulbs, so you are relying more on reflected light between the lifts and walls. Placing workbenches or shelving in these areas will reduce reflected light.

40x56x14 Lighting layout

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