PVC pipe will begin to be more susceptible to physical damage over time.
Push together and hold firm for 20 seconds after gluing. You may however, want to install one or two spray heads above the water level, to aerate the water, and cool the water, or just for the sound and look of fountain spray heads just above the water level. Second most common is a loose pump lid, or dirty and unlubed lid o-ring. Para inspirar a sade do corpo e da mente! You can run a pipe for future use, capped off at the pad. Available at most home stores, you connect this to a garden hose, and push it into the skimmer.
Dig a small hole in the bottom center of the floor, and place the 2 main drains, 3 ft apart from each other. Pool plumbing is done after the pool walls are erected, about halfway through the process. Route your plumbing away from your electrical panel. And for the collapsed line, if flex pipe was used underground near the skimmer, we wrote a blog post https://blog.intheswim.com/sylvan-pool-flex-pipe-skimmer-repair/. When your pool is being dug, have the operator dig a trench from the pool to where your pool equipment will be (your equipment pad). I am about to start a 18x43x30 True L pool.
"@context": "https://schema.org/", After all, most people spend nearly one-third of every day in bed. Domingos e Feriados 9h s 15h Nossa infraestrutura possui aparelhos top do mercado, oferecendo qualidade nica aos nossos alunos. Hold the joint together for 10-15 seconds before releasing. Thanks.
John, having a main drain will help with circulation and water clarity, and cleanliness, but is not absolutely necessary in a pool only 52 deep, and with such small dimensions. The next step is to connect the skimmer line and the main drain line into the pump. In some cases you will need additional pipe, depending on the size of the pool, how many returns and skimmers, and any other water features you are planning, and the distance to the pool equipment. Sometimes you just have to laugh..:biglaugh: The Fora platform includes forum software by XenForo, https://www.mytractorforum.com/attachment.php?attachmentid=1742785&d=1469767994, Backyard Round Table: L & G Tractor Related Topics, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. the ball valve if you just have one should be located in front of the pump. On his retirement, he started a remodeling and home repair business, which he ran for several years. If you havent done so already, connect the Hayward widemouth skimmer to the wall panel with the cut-out. So, you either have a big air leak, somewhere before the impeller, or the skimmer has a debris clog, or a plug fell down the pipe, or flexible pvc was used, and now a section of the pipe has collapsed.
"keywords": "", After the pump install a union, and then plumb to the inlet of your pool filter. When you measure your plumbing runs, do not forget to add theverticalamount of pipe needed, and the pipe, fittings and valves neededabove ground, to connect the pool plumbing to the pool equipment.
Use as few 90s as possible, to reduce resistance. There are different types of piping that can be usedfor plumbing an inground pool. It should be water tight, not even a drop should be discovered. Sch stands for Schedule.
A family friendly forum community dedicated to all Tractor owners and enthusiasts. I still call them cinder blocks also. Finally, connect your pipe from the skimmer and main drain into these two Street Elbows.
Hi Davy, im planning on replacing my pump and relocating my filter to a varible speed pump and cartridge filter 4 or 5 feet away from pump. Flexible PVC may be a bit more expensive upfront, but you will often experience fewer maintenance issues in the long run. PVC should be solid core no foam core Scd 40 with pressure piping fittings they have the deep hubs. Run your conduit from the pool light niche, to the junction box, which is where the pool light cord meets the power cord from the breaker box, which also needs to be encapsulated in electrical conduit, rigid or flexible.
Rigid PVC pipe is stronger against chemical degradation and resists problems from earwigs in the soil. But have heard about hard piping.. Black poly pipe will use barbed fitting inserts and clamps to connect to the pool and equipment, rather than glued PVC fittings. "@type": "Person", For extra security, first spread a thin layer of silicone or pipe dope over the threads, before wrapping with Teflon tape.
Motor is working , valve is open! "name": "Larry Weinberg", Using flexible PVC allows the plumbing system to move with the pool avoiding these problems. For the conduit that is used to carry power wires to the pool light, youll need a quantity of 3/4 gray conduit, which you can buy in 10 lengths. Seja na salas de aula, na piscina ou no setor de musculao, conte sempre com o acompanhamento de profissionais capacitados para cuidar de voc. },
One the other two side ports, glue in the 1-1/2 Street Elbows, with the opening pointing down to the ground. Space out your equipment for airflow and serviceability. Minimum 1 and maximum 5 tags. Hi Ralph, place your return lines below the water level, about 9 or so, and use a threaded coupling flush with the pool wall, 1.5 PVC Sch 40, so that you can thread-in a standard eyeball fitting. Schedule 40 pipe is available in rolls of flexible PVC or as rigid sticks, either 10 or 20 feet in length. Eliminating K&T, L&P and sagging structure one room at a time. Well I get about 2 years out of them, but have had them fail out of the blue.
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"url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide", Most above-ground pool manufacturers include flexible tubing with their pool packages.
If you get a leaky valve or something you can always just put a plug in the fitting. This refers to the thickness of the pipe wall. To install this you only need to drill 2 small holes in the return pipe. Put the valve on the 1.5 PVC, and reduce down in size to a 3/8 hose adapter, clamped securely. Within 15 seconds of cleaning, apply a liberal coating of fresh PVC glue on the inside of the fitting and the outside of the pipe.
PVC pipe is the obvious solution if it is time to replumb your above-ground pool. Use larger eyes (3/4 or 1) further away from the pump, and use smaller (3/8 or 1/2) eyeballs on the returns closer to the pump. Make sure it is at least about 2 ft wide and at least 2 ft deep. Coming out of the 3-way Jandy Valve, at 3 oclock and 9 oclock, you will again glue in two Street Elbows, pointing straight down to the ground. "@type": "ImageObject", This will ensure enough room to fit all your pool plumbing lines and electrical conduit also. What is the standard size tubing for such a project? you can glue fitting on it just like hard PVC. Sch 80 fittings can be used on pumps and filters, if you encounter a problem with Sch 40 fittings melting and shrinking, and leaking. Use 3-4 wraps of Teflon tape, in a clockwise direction around threaded male fittings. Connecting your main drain pipe into the skimmer is not recommended; this method wont allow you to adjust the suction of the main drain and skimmers independently. Clogs are most easily cleared with a Drain King, or a snake.
Double clamp the pipe over the fitting with two clamps going in opposite directions. 2021 Ineex | Todos os direitos reservados.
PVC will get brittle with exposure to sun/uv over a relatively long time. If you have any questions about inground pool kit plumbing, or run into any troubles while plumbing your inground pool, give our pool plumbers a call here at In The Swim were here to help! Preencha seus dados para agendar sua visita e Surpreenda-se.
With flexible PVC, there is more wiggle room for your construction. This valve has 3 ports, one labeled Pump connect a pipe from the pool pump into this port, and one labeled Return connect a pipe from this port towards the port labeled Inlet, on your other 3-way Jandy Valve. Because of this, the joints are more likely to cause leaking problems years down the road. Is there any guidelines or specifications on this or keep the system close to each other and use schedule 40 pvc? Use liberal amount of Fresh glue, on pipe and fitting. Also orientate them so that a circular flow pattern is created, around the pool. Can I use thin wall conduit, and also use a receptacle to plug and unplug the pump for service? this way you can either plug your return and shut off the valve to clean out the pump basket. As described above, some DIY inground pool builders will use Black Poly underground, up until the equipment pad, and then come up out of the ground with rigid schedule 40 PVC, for a more secure and professional looking filter system installation. If you know when you install your pool that down the road you may want to add some water features, or an automatic pool cleaner, it is a good idea to run the underground piping when you install your inground pool kit.
With a wet cloth, wipe off any excess glue. Also, when you're going through all this trouble of cutting and gluing pipes, if you do only have one return, and a decently-powered pump, this may be a good time to go ahead and cut in a second return on the opposite side of your existing one, that way you're negating dead spots in your circulation. Is it ok to use 2 pipe to supply pump and 1 1/2 to returns? Hi Pete, there are many ways to reduce it, you could do it right at the pump using threaded reducing bushings 2 x 1.5, or you can go with 2 connected to the pump, and reduce it as you connect to the filter. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide", Then a ball valve right off of the skimmer.
Mostly I "feel" that it restricts flow a lot. If you want to be sure that your pool plumbing job was done well, without leaks before backfilling over the pipes, you can pressure test the plumbing. The Fora platform includes forum software by XenForo, https://www.manualslib.com/manual/138373/Raypak-Versa-155c.html?page=2#manual, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Then glue your flex pipe into the other side of the elbows, and run your pipe to where the two returns are located, typically on opposite sides or ends of the pool. }, I'm just a lay person doing DIY as a loner. Use as few 90s and 45s as possible, to keep total system resistance as low as possible.
Valve should be right off of the pool preferably a 90deg elbow coming out of the return and a ball valve perpendicular to the pool.
When gluing PVC pool pipe into couplings, unions, valves or other fittings or connectors, the proper way is to clean the inside of the fitting and the outside of pipe, get it good and clean with a PVC primer. In most cases, there is no need to use a PVC pipe larger than 2 inches in diameter to plumb your above-ground pool water system. In The SwimPool Kitscome with all you need to install an inground pool, but if your pad is located far from the pool, or if you add a cleaner or fountain line, or additional steps jets, or a slide water line youll need more pipe, PVC fittings and valves. This is the second year we've had it. Press question mark to learn the rest of the keyboard shortcuts. Above-ground pools dont need schedule 80 PVC pipes.
Hi Joe, sounds like they connected the two pipes underground, or put another way, both the filter pump and waterfall pump share the same single main drain pipe? "publisher": { Unused pipes can just stub-up, out of the ground at the equipment pad, and be capped off above ground level for fountains, or connected through the pool wall with a wall return fitting.
Alm das salas de aulas especiais e aparelhos de qualidade, oferecemos piscina semi-olmpica no plano aqutico, espaos de convivncia, restaurante e muito mais! If you havent erected your pool walls at this point, make your best guess on the location, but before you begin to plumb, measure again, to be sure you do not run short on pipes or fittings. Alm disso, nossos alunos contam com uma infraestrutura completa oferecendo conforto antes e depois da prtica das modalidades.
Water-in the soil around pipes, to be sure dirt gets underneath, for support. This is done by blowing the lines and equipment out with a small compressor or blower vac. There are 2 holes at the bottom of each skimmer, one gets plugged (usually the front hole) with the PVC plug included with the skimmer. So something is working. Many of these kits have barbed fittings and use band-type clamps to make a water-tight connection. At this stage, the pool is dug, the walls are erected, and the pump and filter system are in place, on a level slab of concrete or pressure treated wood. New main drain safety laws require the use of dual main drains, to prevent entrapment on a single main drain. Clarifiers can also help. Hi Bob, most pumps are connected with flexible conduit, and per code must be attached with conduit connectors, so that everything is water tight. Hi Eric, yes you can do as you say, place them apart and run the pipe between under the sidewalk. I have a 24" pool I'm wanting to hard plumb. Black Polyethylene pipe can be purchased in long rolls, and is joined together using barbed PVC insert fittings, which are secured by stainless steel clamps around the pipe. i hope this information helps any more pool question feel free to check out our web. Not having a bottom drain can be circumvented by having some wall returns that can sweep water across deeper sections, or by running a pool cleaner on a daily basis, especially robotic cleaners that also filter the water, but the circulation from any cleaner is helpful. The most visible change you may notice is a darkening of the PVC pipe exposed to bright sunlight. PVC piping is used along with flexible hoses at the skimmer as well as the water inlet. Clean the pipe and fitting immediately before gluing with PVC pipe cleaner. Water from skimmer is not flowing into basket. I was going to go with flex PCV like the return is, but could not find any.
Segunda a Sexta das 06h s 22h Get free, zero-commitment quotes from pro contractors near you. Pool plumbing is not hard to do, just be sure to plan each section of pipes and fittings. The major difference between these two types is the thickness of the pipe wall.
Avoid plumbing loops where freezing water may become trapped.
}. This is normal and doesnt affect the structural integrity of the PVC pipe. As for the ball valves, since AGP's normally only have one or two inlets and one or two outlets, you can generally get by with two ball valves, one on front of the pump and one after the equipment. The advantage of Black Poly pipe is that it can be purchased more cheaply than PVC pipe. The pool wall and liner may expand, shift, or vibrate as people use the pool. O mais completo centro de bem-estar e sade premium de Porto Alegre! Most standard PVC fittings are not compatible with the fittings used on above-ground pools and their pumps. Most air leaks come from the threaded PVC fitting that screws into the pump, which can be patched quickly with Pool Putty, or the fitting can be replaced. Hi Robert, there is no need to run separate lines for returns, as you can balance them at the wall, using different sized eyeball fittings. Before we get into some detail about how to plumb an inground pool, lets define the what, where and when. If you have more than two returns or two suction lines, you can add another valve, either a ball valve or a Jandy Valve, onto the return or suction-side manifold. Do not use DWV fittings or foam core PVC.
Using 1.5 will result in a little higher pressure and slower flowrate, and increased workload/cost to run the pump. Its OKAY but it would be better to use 2 to the pool, as far as possible, and at least all 2 above ground, between pump and filter and to the return line. PVC pipe is sold in two types, schedule 40 and schedule 80. The easiest way is to do it at the pump I suppose. }, Black Poly pipe, also sold in rolls, can be used. I think I replaced them once. Older PVC pipes may not be as resistant to sharp impacts. Tagging will helps others to easily find your question. Schedule 80 pipe is a gray PVC, with a 0.200 wall. Adding a length of flexible PVC to the inlet and outlet on your pool pump is usually a good idea. "caption": "In The Swim Blog"
This was a more economical method, rather than running a separate, dedicated pipe for the waterfall pump, which may be rarely used? Be sure to use Teflon tape and a little pipe dope or silicone to prevent leaking.
The conduit or pipe that carries the power to the underwater pool light is also a part of pool plumbing, so well touch on that as well. Variable speed pumps need 2 inch pipe to give a better flow and most cost savings which is why you are purchasing the variable speed pump.
There are also other considerations to take when using PVC to plumb your above-ground pool. Flex pipe is much easier to work with; it lays flat in the trenches and makes turns without using flow restricting fittings.
The consensus among pool maintenance professionals is to keep the pipe size as close to the original as possible.
Many of our customers use rigid PVC where the pipe comes up out of the ground, and use flex pipe for the underground plumbing. The PVC has lasted for around six years so far with no signs of degradation from heat or sunlight. Fill and compact the soil gently so that you do not put pressure on underground pipes and fittings. So ensuring it is free of any Do You a Need Pool, Spa, or Hot Tub Contractor? Domingo e Feriados das 09:15 s 13:45, Praa Japo, n 30 - Porto Alegre- RS Check valvescan be used if desired; they are especially helpful if the pump and filter is located more than 12 above water level. Glue two equal lengths of rigid PVC into these Street Elbows, and on the other end, into two slip elbows. Continuing our series of how to build an inground pool, we now reach the phase of plumbing your pool, to connect the pool suction and return fittings to the filter and pump system. A pipe labeled Schedule 20 will have a thickness of 0.100, and a Sch 40 pipe will have a 0.150 wall thickness. Plumbing an inground pool is one of the fun parts of building your own inground pool enjoy it. You should select the PVC pipe with the proper specifications for structural and monetary reasons. Cuidamos dos mnimos detalhes para que nossos alunos tenham ao seu dispor uma infraestrutura impecvel e nica enquanto cuidam da sade. Clean and glue your main drain pipe into 1 side of the valve and your skimmer to the other side of the valve. Lengths of rigid PVC can be purchased at any home store, or plumbing supply house. "datePublished": "1/17/2020",
(51) 3030.4848 If you have any other accessories that is where you pipe to next from the filter after putting in a union and then pipe to either a heater, heat pump, salt system or anything else then from there to a Jandy 3-way valve. Congratulations, now you can backfill over the pipe and up against the walls. Hand tight, plus 1-1/2 turns with large pliers. Flexible PVC is more forgiving of bumps, impacts and other external forces. Sch 20 pipe should not be used on pool plumbing, or pressurized lines, Schedule 40 is standard.
Once outside of the wall, run this pipe all the way back towards the filter pump. This is why some builders scoff and scorn at the idea of using Black Poly pipe. Open the air bleeder on the filter to allow the air to escape. I had my pool repiped last year and they tied my main drain into a waterfall line which has a separate pump .When I blow out the main drain from the pool pump 3 way valve I have to close the valve to the water fall pump to blow out the line. Thousands of homeowners just like you have figured out how to build an inground pool, from pool guys like me. "@type": "ImageObject", See this link for more info: http://www.brockportny.org/files/building-code/Electrical-WIRING-SWIMMING-POOLS.pdf. If you are upgrading to a Variable speed pump and filter with 2 ports, it is a good idea to increase the pipe size to 2 instead of the standard 1.5 pipe.
The typical above-ground pool pump and filter are designed to deliver between 30 and 60 gallons of water per minute. "logo": { Some people building their own pool will use rigid PVC on the plumbing that is visible above ground, which looks a little better, and can provide more rigid support. Any advice? "name": "In The Swim", Run a bit of pipe between the 2 drains with a Tee fitting in the middle of the pipe. While still hot, tighten again on the clamps to improve the seal. Its a 15x30 above ground pool, and we have a 1.5hp pump, and sand filter. "description": "Tips on plumbing an inground vinyl pool kit - connecting the pool skimmer, returns and drain to the pool filtration equipment. If you purchased youringround pool kitfrom In The Swim, the Deluxe or Deluxe Plus pool kits come with everything you need to plumb the pool. You can mitigate that with wrapping or even paint. but I assume you would insulate it anyway.
"@type": "ImageObject", "mainEntityOfPage": "https://blog.intheswim.com/inground-pool-kit-plumbing-how-to-plumb-a-pool/", My 18' round has been hard piped for years without issue, and boy does it move some water. Emory cloth orsandpapercan be used to smooth off the burrs after cutting the pipe. Well after fighting with the pool pump the last two years, we broke down and got a new one. Flexible PVC is more forgiving of the vibrations from an operating pool filter pump. A place where redditors can discuss all things swimming pool related. JavaScript is disabled.
Do I just need to make sure the PVC pipe is approx the same lengths of the original hoses? Your bed is the place in your home that should bring you the most peace, tranquility, and comfort. Tighten securely with a nut driver, then heat the pipe slightly with a torch.
To replumb your above-ground pool to PVC pipe, you need special adapters. Since the repipe we have a LOT more flow! Perhaps there is a controller that will automatically turn the valves, so that both pumps are not trying to pull water from the main drain, at the same time? Some pools use compression-type fittings. My pool is not working. In between these two elbow fittings, use a piece of rigid, schedule 40 PVC. Once the MTA is installed, glue a 6-12 piece of rigid PVC pipe, into the fitting. Teflon tape and silicone is used for threaded fittings. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! From your filter system, choose the shortest route around the pool, to reach the wall returns. Was wondering are there any precautions we should take? Hi Giles, 60 ft away is no problem. "url": "https://blog.intheswim.com/" The fittings on the pool and the filter system cant be upsized and will continue to limit water flow. Piscina semi olmpica e ambiente climatizado.
Set your pump, filter, heater, etc., on your equipment pad in a logical order, leaving lots of room for future repairs or service. PVC is great to work with because there are so many options. Plumbing an inground pool is fairly simple stuff, but its not hard to mess it up if you do not have a plan and proceed carefully. Os equipamentos utilizados so da Life Fitness, marca internacionalmente reconhecida por sua qualidade, design ergonmico, tecnologia e funcionalidades. I am installing my own 16x32 inground pool. If youre in a cold weather climate, you will need to winterize your lines and equipment before freezing temperatures hit. I will have 2 skimmers. It has to go!! O nosso objetivo contribuir na sua mudana de comportamento, cuidando da sua sade e bem-estar atravs das diversas modalidades que oferecemos. I dont want it to dribble out nor do I want it to shoot across the pool.
From the Tee, connect a pipe that will run through the deep end slope, up underneath the wall. Using schedule 80 PVC pipe for your above-ground pool system is overkill and wastes money. Enter Our Dog Days of Summer BBQ Giveaway Now! You have had your above-ground pool for several seasons and notice that the flexible pipe provided by the manufacturer is beginning to show its age. "height": "219", With the trench dug, the pipes from the pool to the equipment pad and back to the pool can be connected in just a few hours. Leave at least 6 of clear straight pipe on both sides of any piece of installed equipment.
Other plumbing lines may be connected to step jets, a pool cleaner line, or fountains and water features. The most commonly used pipe for inground pool construction is the 100 ft roll of flexible PVC pipe (1.5 diameter). Brushing the pool twice weekly can help compensate. Heaters or heat pumps have special installation requirements.
To increase flow rates, you must increase the size of your pool pump. Some above-ground pool manufacturers now offer adapter kits. This can save a few hundred dollars on large pool installations. At the filter end these would tie in on the filter side or return side of the equipment, you can just stub it up there and cap it also.
About the only other thing I can say is anyone I've ever spoken to says Not to hard pipe an above ground pool. "height": "219", I am going to install a lion head wall fountain so that a stream of water spits from the lions mouth. Large water features, or powerful spa jets are another area where 2 pipe may be used. I am going to have 2 main drains and 2 or 3 skimmers and 4 returns. Typically, a tee fitting is installed on the return line, with a valve below the tee fitting, to control how much water is delivered or pumped to the device. All pipes coming out of the ground should have the same height. However, PVC pipe is not the same size as the flexible tubing, and you wonder what PVC pipe you should use for your above-ground pool. Pool Safety Cover Vs. Safety Net Vs. Safety Fencing, http://www.brockportny.org/files/building-code/Electrical-WIRING-SWIMMING-POOLS.pdf, https://blog.intheswim.com/sylvan-pool-flex-pipe-skimmer-repair/, Raising Pool Equipment for Flood Protection, Flooded Inground Pool: 10-Steps to Recovery. Code may also prohibit plugging-in (or using 110V) on an inground pool, but Im not certain about that. Having a continuous roll makes it easier to wrap around corners and you will need fewer connectors. Upsizing the PVC pipe to a larger diameter doesnt improve performance or efficiency.
Above-ground swimming pools are known to move as the water in the pool is disturbed.
CNPJ 23.200.031/0001-91 - Praa Japo, 30 - Bairro Boa Vista / CEP 91340-380.
I do not know who to call to fix what may be a blockage in the pipe. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide", Plumb in order, from Pump to Filter to Heater to Chlorinator or Salt System. Black Poly pipe is not glued together like PVC pipe.
Dont over-tighten threaded fittings into pump, valve, skimmers, drains.
If you don't have a PVC glue yet, most pool guys use "hot blue" PVC glue because it sets quickly and has worked well for years. Salt Generating System Pentair intelliChlor, Tru-Tile by Latham Industries in Vinyl and Hybrid Pools, Weekly Cleaning Weekly Service Weekly Cleaning Service, PVC Plumbing for pump and heater - 21' above ground pool, pressure gauge on the pentair sand filter system. You probably dont need a 2hp pump for that purpose.
"dateModified": "1/17/2020", familypoolsupply .
The last thing you want is to have a leak underground because of a bad glue joint, or a slip fitting left unglued, or a threaded fitting without sealant. Many above-ground systems leave the piping exposed. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide", I've had no problems!
Too much resistance?
Sbados 8h s 18h Check the filter design flow rate, usually on the filter label, and then check the flow chart curve of the pump you like, and select a pump that will produce less than the design flow rate maximum, based on an estimate of your overall resistance rating, in feet of head (vertical axis of the pump flow curves). Let the system run for a day, and if you do not see any wet spots on dry soil, then were ready to backfill around the pool, and in the pipe trenches. I have a smooth flexable PVC return that I belive is 2" and is fine. Utilize the old school purple primer and Pvc glue.
That way, you can just shut those off quickly when you need to empty the pump basket or clean the filter. So yes, it is very desirable to have a main drain, for the best circulation and not just one, but dual main drains are now required. Your plumbing lines should be about 2 ft underground to protect them from surface soil slip and shift and from freezing temperatures. Allow the glue to cure for 24 hours.
You can see that this gives you a wide margin of safety. What was wrong with the corrugated flex hose? Above ground pipes should be supported, and allow room to service equipment and move around without damaging pipes. Also keep in mind any codes that may exist for placement.
Connecting the equipment with rigid PVC above the ground, looks neater, and makes the equipment less likely to move.