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I'm trying to find some design criteria for ventilation of indoor ranges (specifically an indoor rimfire range)-can anyone help me out? I have the NRA range design manual but the section on indoor range ventilation is pretty weak.
The gun club to which I belong has been using an indoor range in the basement (built for rimfire and centerfire gallery loads) of the city courthouse since the early 1940's. Since about 1992 the range has been limited to rimfire use only. The indoor range is in jeopardy of closure due to lead concerns recently raised when a local college grad student was able to get access to the range and perform some air testing when he and his buddies were firing centerfire pistols with full house loads. The city council temporarily closed (so they say) the range until lead abatement could be done and the ventilation system upgraded. I have volunteered to look into the ventilation requirements and provide design services as required to upgrade the ventilation system.
[This message has been edited by steve j (edited December 22, 1999).]
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