Watts/sqft allowed in CA for insudtrial installations

[MikeI]

Currently designing a layout for a building that is 50'x35'x38'H. It will house a conveyor system and surge bin. Owner wants to use 400W MH fixtures he has in stock I have been unable to find CA's code for allowable watts/sqft for this type of installation.

 

[Sierrasparky]

Mike ,
Welcome to the Forum!

As to your inquiry. You will need some additional information:

Actual building use.
Are there any windows
are there any skylights
High bay low bay

Also all lighting must be signed off and verified by a Acceptance tester.

There is a member by the screen name of Fulthrotl that knows more about this stuff.

Existing fixtures in place and not modified or change in circuitry can remain
New buildings have to comply with all new standards

 

[MikeI]

Thanks. . .I meant to say "unable" to find.

 

[Dennis Alwon]

Thanks. . .I meant to say "unable" to find.

I fixed it

 

[Sierrasparky]

General however you need to look at the entire space
Commercial /industrial working = 1.0 Wt/sqft.
Commercial industrial storage = .6 wt/sqft

Then you also can do an area category method.
You will have different Max watt Sqft. for different area types:
work areas Low Bay = .9
work areas high bay =1.0
precesion work space = 1.2

All of this gets modified after your adjusted lighting allowance.
That can be based on variables such as lighting controls if I remember correctly.

I will have a Title 24 person do the engineering it is too complex for most.

Sorry for the can of worms

 

[Fulthrotl]

Currently designing a layout for a building that is 50'x35'x38'H. It will house a conveyor system and surge bin. Owner wants to use 400W MH fixtures he has in stock I have been unable to find CA's code for allowable watts/sqft for this type of installation.

welcome to californicate. there is a simple test for lighting. if it's bright enough
to see what you are doing, it's too bright.

easiest way to get this to work, is to use a footcandle proggy
inside of auto cad that will map your lighting based on the fixtures
you plan on using.

depending on what city you are pulling permit in, i'd be inclined to
get a PE to bless the drawings.

then, you'll need someone with a certification to certify that the
certified lights are certifiable. if this sounds insane, well, it is.
if you like, shoot me a PM and we can chat about what you'll have
to do to get a final inspection.

the high hurdle is called title 24:2013 compliance.


randy

 

[MikeI]

Thanks for all the replies. I will now pass on the "good" news to the owner and get one of our PE's involved.

 

[MikeI]

One more question: Is Comcheck required?

 

[Fulthrotl]

Thanks for all the replies. I will now pass on the "good" news to the owner and get one of our PE's involved.

you can't do daylight harvesting with MH, or stepped dimming, and with the warm up time,
occupancy sensors aren't going to work well at all... ;-) but will provide opportunities for
entertainment for the people using the structure, for sure.

i just got off the phone with my EE about a project he's putting together, using nLight
for a parking garage. there are more control modules and cat 5 cabling in this stupid
parking structure, to get it compliant, than you can imagine. we are not even going
to address the cost, but it'll increase the installed cost by a factor of four, at best.
every light fixture has a module, and they all have to be programmed, and let's not
forget the 30% load shed on demand intertie with the poco.

and that is to get it thru plan check. when the project is built, in a year and a half,
there are new energy constraints coming down the pipe to make it more difficult.
this one will be grandfathered in, but i saw the timeline for this stuff.

2030, all new commercial construction will be neutral, that is to say,
the building will produce what it consumes.

welcome to california. we have just legislated perpetual motion.
don't shoot the messenger. i didn't mix up this kool-aid, i'm just the kid handing
out the paper cups......

would you like ice in your paper cup, or are you going to drink it straight up?
edit: nevermind the ice. we don't have the energy budget for the refrigeration.

here's your cup of warm lemonade flavored kool-aid. that will be $3,722 please.
running a lemonade stand in california costs more than elsewhere.

pay up, please.

by the way, in the last picture, the vertical cliff between leed gold, and platinum,
is not accurate. in real life, it's actually steeper than that.

going to build a building on a vacant lot? it's covered with weeds? got a tractor
to scrape away the weeds, and clear the lot so you can lay out surveyors stakes?
you just blew leed platinum, now and forever more.

you just removed indigenous plants and didn't integrate your building into those
foxtails. bummer dude. - 5 points.

 

[Fulthrotl]

One more question: Is Comcheck required?

Comcheck is not applicable anywhere in california.