My project is an industrial plant with several buildings (all buildings going for one certification). We have daylight simulations of some of them and we are measuring daylight on others. The measures are complying with the minimum of 25 fc (required), and also with the maximum of 500 fc (not required at option 3). What Option 3 do requires is "daylight redirection and/or glare control devices to avoid high-contrast situations that could impede visual tasks". These spaces have skylights and perfect illumination levels, so the owner is refusing to install glare control devices (they are too expensive an unnecessary in this case). My question is: does LEED really requires glare control devices for each window when following option 3? Even though they will be open at all times?

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Jill Perry, PE

Consultant

Jill Perry, LLC

LEEDuser Expert

298 thumbs up

Tue, 04/12/2011 - 22:33

Does the space you're referring to have windows in addition to the skylights? Are the skylights transparent (clear) or translucent (diffuse, obscured)? If you have no clear windows or skylights in the space, then your glare control is the diffuse glazing. If you have clear skylights (which it sounds like you don't) then you need glare control, if only from a practical standpoint, and including from a LEED standpoint. If you have clear windows, you will likely need glare control. What way do the clear windows face and what are the hours of operation of the facility?

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