<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I haven't seen a problem with concrete, but wood definitely rots out when exposed to acid, including pressure treated.<div>(Saw a system with Battery shelving made from wood where the top shelf collapsed from acid rot......)<br><div>Acid also eats foam board, unsticks silicon seal, and gets under and dissolves the spray-on bed liner ( our last attempt at corrosion protection)<br><div><br></div><div>I worked on one system with a simple lining made of heavy plastic sheeting, that actually contained long term several gallons of acid from a set of cracked L16s.</div><div>The plastic options mentioned would probably be good, if they're not too expensive. I've had the plastic tubs crack from the battery weight though.</div><div>Since HUPS come in a powder coated heavy plate steel container that hold any spills if the inner liner is damaged, I haven't tried to exceed the manufacturer's efforts.</div><div>(although, we recently had an inspector require us to ground all the cases, but there was no grounding point provided....)<br><div><br class="webkit-block-placeholder"></div><div>
<span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>R. Walters</div><div><a href="mailto:ray@solarray.com">ray@solarray.com</a></div><div>Solar Engineer</div><div><br class="khtml-block-placeholder"></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span>
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<br><div><div>On Apr 30, 2010, at 9:21 AM, Mick Abraham wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Hi, Mechanix~<br><br>My "customer du monde" has a dirt floor in the battery space but he's willing to build something on which we could place his "wet" type batteries. <br><br>Concrete is strong but it also tends to begin dissolving when battery acid gets on it. Been there, seen that, didn't like it.<br>
<br>Wood could be strong but what about the dissolving problem? Would pressure treated wood be better than white wood, redwood etc.?<br><br>OR: what else would the group advise for a support structure?<br><br>************************************************************<br>
<br>The above questions assume that whatever we do will probably get wet, but that may be too pessimistic. Could someone give me a mini-review of plastic trays which would protect whatever goes beneath? <br><br>I'm pretty sure polypropylene is the right type plastic but short of custom welding by a plastic fabricator...where can I find trays which fit OK with floor scrubber type battery case dimensions?<br>
<br>Thanks all around,<br><br clear="all">Mick Abraham, Proprietor<br><a href="http://www.abrahamsolar.com/">www.abrahamsolar.com</a><br><br>Voice: 970-731-4675<br>
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