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Exposed Piping

Exposed Piping

Exposed Piping

(OP)
I have a floating dock, several - actually 1400' long with 400' spurs, am doing a dry standpipe. question is rather than use galvanized pipe couldn't I just have it painted and meet the corrosion requirements, all grooved items are factory painted, metra-flex fire loop at all "expansion/contraction" joints

spkreng, CET

RE: Exposed Piping

Since you say your project is a floating dock, the Standpipe Code, NFPA 14, probably does not appply (a "dock" is not a building).  But just for your information, the 2007 NFPA 14 Standpipe Code, at paragraph 6.1.2.4 says the following:

6.1.2.4  "Where corrosive conditions exist or piping is exposed to the weather, corrosion-resistant types of pipe, tube, fittings and hangers or protective corrosion-resistant coatings shall be used."

"Corrosion-resistant pipe" would be galvanized, for example.

"Corrosion-resistant COATINGS, in my humble opinion, do NOT include "paint".  Examples of "corrosion-resistant coatings" (epoxy, powder metal, etc.) are in the link to a manufacturer see below .....

RE: Exposed Piping


Well after reading the relevant code passage above, I would personnally interpret corrosion resistant coating definition includes paint, even enamel paint.

Are you bidding this?  Could you provide two bids, a base bid with painted CS and cost adder for int/ext galv?

Painted may meet the letter of the code, but probably won't last.. bird poop, sun exposure, owners hosing down their boats with bleach solution, etc.   

 

RE: Exposed Piping

(OP)
no bid, designing, the owner is the installer - yes headaches galore...gonna go with sch. 10 galvanized as they won't go under the dock (scubba painter) to paint pipe and won't find breakage, leaks until it's used.

spkreng, CET

RE: Exposed Piping

Galvanized piping is the right way.  Good luck!

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