Is having a frit pattern necessary if you have a really low ratio of glass to opaque surface?
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Pilot-Credits SSpc55: Bird collision deterrence
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Frit Pattern
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Stefan Knust
Director of SustainabilityEnnead Architects
1 thumbs up
March 13, 2020 - 7:03 pm
Hi, Chelsea. There is actually a formula for that if you look at the LEED Pilot Credit. How low is your ratio? It also depends upon what type of structure you are talking about and where on the structure you are placing your glass. The LEED Pilot Credit tries to address areas of greatest risk, while also making some allowances. Make sure you are reading the 2016 version of the Pilot Credit - there were some updates. Generally, there has to be a visible signal in order for the bird to recognize that it is approaching a potentially deadly surface in it's flight-path. But that signal does not have to be created with (ceramic) frit, there are a variety of techniques, some of which limit the signaling to visual wave-lengths that many migratory birds can see, but humans cannot. My answer right now is yes/no/maybe because I would need more info - but you are on the right track - the less glass (or similarly reflective surface, even if opaque, like a mirror or polished stainless steel), the less risk.