Commecial water park

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speedystevie

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Long Island, NY
We are about to begin a project for a local water park. The park is installing a new water slide that drops people into a large pool. We have been hired to bond the pool as required. My understanding is that the code requires all metal parts larger then 4? to be bonded, including ALL metal parts involved in the structure.

This pool is about 50? by 80? and has about 190 parts that need to be bonded as per the code. This includes all fiberglass forms that contain metal parts installed for the purpose of holding forms in place while pouring concrete, all rebar involved in the forms, all support beams that have been drilled 60? in the ground for support and the usual ladder and railing cups.

My biggest question here is this: Do parts that have no contact in anyway with water require bonding? I say yes but I wish the answer was no. Any comments?

Anyone have experience with this sort of situation. No such thing as a manual is found for a project like this as its all custom work.

The bonding of this pool is only a small part of the project to come.

Thanks for any input.

Steve
 
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I am not in a position to comment on what would be _legally required_ for this installation, but my opinion is that anything that could act as a grounding electrode, including conductors buried in the soil and un-insulated conductors encased in concrete should be bonded. The concrete itself will be quite electrically conductive, so metal buried in the concrete is reasonably considered 'in contact with the water'.

-Jon
 
The bonding helps with fault clearing, which may not be an issue here, and also with providing an equipotential grid, which could be an issue here. You don't want adjacent metal parts to be at different potentials.

I'd give serious thought to bonding the metal parts.

Jim T
 
I am all for bonding all parts as safety is my number one concern. Located / Imbedded in the fiberglass concrete forms are some bolts, ?? bolts are used to connect the corner parts of the fiberglass forms together. These bolts have no contact with any other metal other then themselves. Does this mean that all self sustaining bolts as such also need to be bonded? To bond all the bolts would involve weld bonding all 220+ bolts. At what point do we draw the line? If we count the bolts, drains, form supports, railing cups, rebar, and ladder cups we are looking at over 300 points of bonding not including each piece of metal imbedded in the form molds.
 
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