We have a project with a concrete planter wall near the edge of the sidewalk. The top of the planter is 32-inches above the sidewalk.
The architect would like the FDC on the planter wall, but a siamese-type would project too far into the sidewalk so he wants a flush FDC.
A standard brass FDC body with clappers would be buried under several feet of dirt so it would make sense to use spigots with clappers - but they would also be threading into a body/manifold that needs to be buried. Our concerns are replacement/repairs on the clappers; corrosion, and sealing around two penetrations through planters while still being able to repair/replace spigots.
We're also considering a 'sidewalk siamese' setup just inside planter wall, but 18-inches above top of planter puts them above 48-inches above sidewalk. I think this is best option but would required fire department permission and the architect is pushing for flush on the planter wall.
Is a flush fire department connection even an option here?
Are we being overly concerned with corrosion and/or maintenance issues on these buried parts?
Thanks in advance for suggestions for dealing with these issues.
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