| Some additional thoughts that have come to mind regarding building permits. If one elects to build a pond without a permit, they should build it in compliance with the building code that is adopted in your area. For California that is the "California Edition of the Uniform Building Code" with any modifications the local agency having jurisdiction may have adopted. Your local agency will have a copy available for you to read.
Place the pond in an area that complies with all of the setback distances from property lines, distance and depth from buildings, etc. For instance, in CA there is an imaginary triangle that has the following points: 5'-90deg out from the footing, straight down 5', and then back up to the foundation for the hypotenuse. Your pond can not intersect the hypotenuse of this triangle at any point. For the typical pond of 4'-6' in depth this means that you should not come closer than 5' to any building without some type of engineered support wall for the building foundation.
Build it structurally following the swimming pool construction codes, especially if you elect to build with concrete or block. Take lots and lots of pictures. Distance shots, mid-range distances, and close-ups. Use a tape or yard stick to show things like center line of re-bar placement, size of re-bar, thickness of concrete floor, walls, coverage beneath and over re-bar. If you are going to use DWV-PVC couplings for the larger radius I would first take a picture of pressure rated Schedule 40/80 couplings first and then change them out to the DWV-PVC.
If you have documentation of the construction method and you get caught building without a permit it will be easier to get the permit after the fact. If you do not document the construction very well (or have a "bad attitude" with the building inspector) be advised that the building department can require one to prove that code requirements were followed. That can involve tearing apart various areas of the pond shell to prove that the code was followed.
The best way to get answer from the building department about the requirement for a permit is to take them a set of plans including plot plan and ask the question. Verbal information is subject to too many variables and misunderstanding. With a set of plans you should be able to get a more definitive answer.
The requirement for a permit for a body of water with a depth of 18" or greater is usually preceded or followed by words something to the effect of "used for swimming, wading, etc by humans". I am paraphrasing here and the actual words may not say that exactly but the intent is for a pool used by humans. In California the latest code has added words to include ponds used as landscape features. So that is how a pond in California falls under the permits requirements.
Now some areas, in particular rural counties, choose not to enforce the building code requirements if one is talking about a koi pond. They will however enforce the electrical code requirements for the electrical service for that pond. Also be aware that code requirements can be applied after the fact of construction.
A real fly in the ointment can be a home owner's association. The boards for these are usually comprised of too many little facists who love the power they have. So you should also check the HOA's requirements for a swimming pool or landscape features.
As has been stated elsewhere, Read the code. Take it one line at a time. If you have questions ask someone at the counter, get their name and position, and take copious notes. If you get different answers from different people ask for a supervisor to settle the differences. ABOVE ALL do NOT get angry and tell them off. This bad karma will come back to haunt you!
Steve |