Is It Safe? The Geo-Polymer we use is primarily recycled plastic bottles and a foaming agent. SmartTrac will fit your project. With this method, the upper well casing shall extend to a depth of 10 feet or more below ground surface and be firmly imbedded in a uniformly tapered hole that is formed when the reinforced concrete buried slab is manufactured, or shall be connected to a pipe cast in the concrete. Repairing Slab Leaks: The first step is to remove the flooring that is covering the leak. This commonly results in dusting. However, you need a new fitting for every pipe curve. b At meter locations, the conduit. Slide the pressure washing wand into the pipe and start to tap the pipe under the sidewalk as the water cuts the channel. duration: 8:08. Go down to the lower section and kill. Simply stated, a slab leak is water that leaks through a slab of concrete. Repaired pipes that are embedded in concrete and located behind masonry can be expensive because the plumber has to dig or drill through the surface in order to reach your pipes. Have the concrete drilled and run it in the conduit, it is the correct way and it is also much safer for you and your family. Reinforcing steel may be required within the slab and around the trench drain - engineering advice should be sought to determine. chlorinated polyvinyl chloride (CPVC) pipe and tubing are intended to be installed in access-restricted locations such as within walls, above ceilings, and within or under poured concrete slabs. Wet concrete on skin can cause everything from mild redness to third-degree, permanently disfiguring chemical burns. Pouring Concrete Slab Cement Concrete Slab Foundation Pex Plumbing Plumbing Installation Building A New Home Barndominium Small House Plans New Construction 4 Months to Build a New House: Real Photos Construction of a new home begins with an empty lot and forms that only suggest a finished product. of metal conduit, Kwikon was made for fast, easy installation, saving valuable man-hours on any construction site. As long the conduit was under the slab, or even in the slab. As the new concrete is pumped in it raises the slab, returning it to its original height or position. The address these problems, a minimum 4 in. It can also locate voids in the subgrade directly beneath slabs and pavements. The concrete needs to be broken up and a 3' x 3' trench dug throughout the house. Slab Leaks. 210 for 460 high slab. We compare design, practicality, price, features, engine, transmission, fuel consumption, driving, safety & ownership of both models and give you our expert verdict. Under Slab Hydrostatic Testing. Another key factor is the amount of insulation used under the slab. 24” and 27” sizes in SDR35 pipe are 10-30% more costly than concrete pipe. Slab Leak Repair 247 Leakmasters is a family owned and operated slab leak detection and repair business serving San Diego , Orange County and Riverside County. Distance across slab is 2. Slab leaks are caused by a variety of factors including pipes that were incorrectly installed, a home shifting on its foundation because of an earthquake, pipe corrosion, and the abrasion that can happen when underground pipes rub against gravel, concrete, or other pipes. The wire or cable can be run into the conduit by a pre-placed draw wire or just run the cable in with extra length. If this occurs with a pipe that is installed under a concrete slab or stamped concrete, you will need to remove the concrete to complete repairs. We used a Leak Detector to find the point of origin. if there was an existing tub sitting on a slab foundation, you removed it then you can go through the concrete move the drain over I have done it I don’t know how times and I am doing one right now and you have plenty room to work with the tub sounds like to me the plumber just doesn’t want to do anything that’s hard, sorry!. Drains should be strapped, or supported, every four feet at the up-side of fittings and branch connections. Garvin is the place to shop when your project requires conduit hangers, beam clamps, strut fittings, rod hangers, or any other conduit or cable support products. Solid support. Install the vertical pipe. Dig a hole beside the slab big enough to aim your pipe the right way and run water off. I can get a T section and connect the pipe to that. Many offer discounts for prompt payment, so do not be afraid to ask. You can dig under concrete easily, effectively, and efficiently. I use a plate compactor across the top to keep it all in place. i dug into my concrete slab foundation, and found two soft-copper pipes running thru it. If you pour concrete on speaker wire, it will be okay for awhile, but over time, the chemicals in the concrete will corrode the outer covering on the speaker wire. If you pour a concrete slab the full length of a wall and at a future date wish to install an electrical receptacle or lights either on the patio slab or on the outer side of the concrete slab, how will you get the electrical service to the area. shall be kept to a minimum. Purchase a length of 3" PVC electrical conduit and put the sweep in the ground below the footing and use another 18" piece of 3" PVC for a riser that will be above the floor about 1" out from the wall, at the wall section. 4 - Liquidtight flexible metal conduit may serve. b) Steel or copper pipe installed into preformed ducts with. This alternative can be carried out, in most cases, without cutting the concrete. If you have leaking copper pipes in concrete slab or behind bricks and cinder blocks, you have a right to be concerned. Curb slab w-footing. RE: Running Conduit Horizontally Thru Concrete Slab mijowe (Structural) 2 Jun 10 14:04 It is difficult to get an electrical sub to put the conduit in the middle third of the slab because they like to tie it to the bottom rebar mat. Pouring a foundation for a headstone is as simple as forming a slab of concrete. Additionally, if warm water is leaking from a pipe under your slab, it can create hot spots or small pools of water on the concrete floor. Once you have fixed the drainage issue and repaired the concrete, you can be fairly certain that the repaired area will not match the surrounding, original concrete. a) Pipe laid on top of base concrete and subsequently covered by a screed (see also 9. For this reason, in-slab heating is generally best suited to buildings with permanent or high occupancy. This will allow the tool to hold itself off the ground making it easier to install and also easier to remove the tool after installation. That basically means that you need to cut off the flow to some or all of your slab piping and run new pipes overhead. On the other end of the pipe glue a slip to male thread pvc adaptor and a female hose fitting. Hi, Jeff: When a pipe sprung a leak under the slab at my mom's house, the plumbers were able to bypass the trouble spot by running new pipes from the main to the inside (they went up an outside wall, through the overhead crawlspace and down to the connections indoors). Many offer discounts for prompt payment, so do not be afraid to ask. A water leak under the floor can easily develop into a costly and inconvenient endeavour. We show you the best techniques and tools so you get concrete forms right the first time. Install the vertical pipe. It is slower to manifest itself as a wet spot under the slab and is best analyzed by a plumber with a video borescope. Someone decided to run 4" PVC under the slab for the dryer vent. We found that the gravel under the slab goes down deeper than we dug, so we never hit dirt. I have never installed gas piping undef slab but was checking my book and the only code I can find in my book seems to be regarding slabs within a building. We used a Leak Detector to find the point of origin. It's a pretty short distance so it shouldn't be any problem. 1 Comment on How to Detect a Leak in a Concrete Slab A slab leak is a water leak within the foundation of a home, which can often result in water damage, flooding, and structural damage. If your Pex tubing will be in a sand bed underneath the slab, you can use straight conduit lengths of about a foot, which should protect the pipe as it passes through the slab. A hole made to expose the pipe, and then the dirt removed in order to reach to the leaking pipes. Homebuilders recommend using slab foundations in warmer climates, since freezing temperatures can cause the slab to shift in cold climates. * Sewer lines & other water lines that run under your house can leak. The slab could be for an entire home, it might be an exterior patio slab, a front porch slab, a driveway, etc. This is one of the common causes of flat roof waterproofing failure. Most homeowners take their plumbing for granted, except when it leaks or it’s clogged. 1 for water pipe & one for electrical. Locate Pipe Under a Concrete Slab Kitchen and bath remodels in houses built on concrete slabs offer their own unique set of challenges, not the least of which is tying the new drain system into the home's sewer line. Compression fittings shall not be buried in concrete screeds or concrete slab. The costs of saw cutting a concrete slab are solely dependent on the size of the slab surface and the condition/location of the wall. It will intersect the chanel drain about a foot from the end at 90 degrees. Use an electronic leak detector to pinpoint the location of the leak. Does the slab have to be in direct contact with the earth. The plumbing, electrical conduit, and other connections are generally placed below the slab, or are enclosed in the concrete. Under the slab, copper water pipe can be rolled out and lie right on top of grade. * Sewer lines & other water lines that run under your house can leak. The soil under the foundation also should be leveled and prepared to help create a moisture barrier between the ground and the home. The Plumber insists that he can only anchor the pex directly to the wood subfloor. Running conduit under concrete floors Hi All, I have a general question about running conduit under a screeded floor around the house and wondered how others have managed. Get a slab leak repair by calling a Licensed Plumber. 170 for 310 high slab. When bull floating pass the float across the slab perpendicular to the direction of the strike-off. Our slab leak detection can save you money and mess by revealing the exact location of the leak. Good Answer: I would doubt that the pipe is totally full of concrete seeing it is only 1 inch in dia. Level and tamp or roll granular base as specified by your architectural or structural drawings. Another way I go under concrete is to dig a trench on one side of the slab, get a 1/2 inch copper pipe cut to the length of the hole, in your case about 5 feet, take a hack saw and cut one end of the pipe at a sharp angle and solder a brass nut (a number 10 nut should work) inside the pipe at the base of the angle. You’ll preferably run a drip of water on the concrete when you cut to keep airborne dust at least and make sure you that the line is not disappeared. If you are installing a concrete garage floor, patio, driveway, sidewalk or support columns you should consider using reinforcing bars, as shown in Figure 1, or as they are termed in the industry rebar, throughout the slab. I refused to corrupt the insulation so internal water is on "surface of wall" and drain lines are surface on the concrete, so "platformed" under shower area. Chalk a line from the start of the conduit run to the end by holding the chalk line tight between the two points Step 2. in the middle of a large family room, that will have hardwood floors. Often times the pipes that run underneath your home are copper tubing so the repair process is pretty standard. Lap any seams in the sheeting by 6-12 inches and seal the seams with a continuous bead of acoustical sealant, butyl rubber, or butyl acrylic caulk, or with tape. The sparkies have limited choices. The previous owners to my house had layed a cancrete slab on top of another concrete slab. Several other sources of moisture could equally be responsible for water intrusion or moisture-related flooring issues. 4 - When running Type NM cable through a bored hole in Ch. Crete-Sleeve® Plastic Hole Forms are used by electricians, plumbers, HVAC and concrete providers to create a hole in a concrete wall or floor so they can run their conduit and piping from one wall or floor to the next. Consider the placement of PVC conduit under your slab that can be accessed in the future. It's not an overly difficult project, especially when you enlist a handful of friends to help. 4 - Is it permitted to use flexible metal conduit over Ch. In slab or under you could kill two birds with one stone by putting pex inside 1" poly sleave. My (1990 built) house has PB pipe which is similar to PEX for this discussion. Often times the ducts are in direct contact with the soil. , tubing centred on four-inch slab thickness) reduces output to 23. The plumber test the pipes, cover them with sand and then you can pour the concrete for the basement floor. Curb slab w-footing. Problem: 50 year old galvenized pipe is failing, and replacing it requires getting under, over or around a 12 foot wide concrete patio. That's a concrete slab level with the surrounding soil. Let the sledgehammer fall. I was out driving around few job sites today and stopped and looked around at some houses that were dried in waiting to be topped out and saw that they roughed in the water with cpvc pipe this house its on a poured slab , tell me this how do you run cpvc under a slab with no fittings , unless they sell it now in rolls or 100' sticks now and heat it up and bend it. You may run NM, UF, AC, and MC cable inside masonry cells when the cells will remain dry. Additionally, if warm water is leaking from a pipe under your slab, it can create hot spots or small pools of water on the concrete floor. The mains cable duct from the meter box is typically 50 mm diameter with a swept bend to allow for the main earth to be installed into it as well. In six simple steps you can dig under concrete: Attach drill pipe. Any lines you run in a slab should be deep enough to be out of the concrete and be run in conduit so that thy can be removed and replaced. Where the conduit enters the vault, it shall be grouted to prevent water, soil and rock intrusion. Jimmy showed up at the job site with a large 16-foot-long six-inch diameter steel pipe that had a coned-shaped metal end. No special precautions need be employed in this instance, as PVC pipe and plastic fittings are sufficiently rigid to withstand the loading of the concrete. It is best to avoid running plumbing pipes through the slab. The newest and rising in popularity method is trenchless pipe replacement. Hire a leak detection company with warranty, use the camera as backup. Metal sewer pipes can be removed and replaced by digging a man tunnel or by splitting them with an expansion fitting/cutter that is pulled back through the pipe with a chain and then a sleeve is routed through the split pipe. Slab on Grade: Installation of sub-rough plumbing begins before the pouring of the concrete slab. Under the floor, the other end of the pipe connects to other drain pipes in the house, so before I cover the area with more carpeting, I'd like to seal that pipe off permanently to avoid any possible leakage in the future. However, you need a new fitting for every pipe curve. Kitchen islands and floor receptacles require running electrical lines to their exact locations before the concrete slab is poured. Extend a fish tape down through one end of the conduit all the way through to the opposite side. You need to protect your speaker cables by running them into a conduit. Do not run NM and AC cable inside masonry cells when the cells are subject to dampness and when they are below grade. I've dug up many ferncos in the ground and they was no break down in the rubber, so take it anyway you like, some perfer no hub banded coupling but I. one of the pipes supply hot water, and has a visible dent in it. Dig a trench deep enough to provide 2 to 3 inches of gravel on top of the pipe along this line with the shovel. I picture the process being like fishing wires -- but on a larger scale. So why do these leak? Pretty much the same reason any pipe leaks: overtime pressure can wreak havoc on pipes and cause corrosion. Figure 2 Clearance between pipe and slab. Being able to make long runs sub-concrete simplified getting service to areas remote from the future breaker box, especially where the. Does the slab have to be in direct contact with the earth. How deep must the conduit be. As is conventional, rebar 30 oriented in a matrix reinforces concrete slab 20. If possible, go with a plumber that lists slab leak detection or repair directly on their website, indicating that they have experience. Often times the ducts are in direct contact with the soil. If any hair was sucked down the pipe, it would block the waste up because it was only a small hole through the concrete. Step 2 Check the forms for level (¼ inch for every 12 feet is sufficient to allow for rain run-off). Yes, you need to run the speaker wire under the concrete slab in a conduit. Remove and replace broken pipes. 8 Btu/hr/ft 2. Lightly sprinkle the concrete with water. Both the plumbing and conduit are actually under the basement slab while the radiant heat tubing is embedded in the concrete slab. Locating a leaking pipe under a slab is a two step process. I would like to sleeve the foundation walls so I can run conduits between the buildings, for future services. No matter how complex the problem, it can be solved efficiently. As I understand things, the gas pipe laid must be plastic covered. It's slab on grade, and I don't know about conduit under the slab. Start your bore. How exactly do you do underslab plumbing repair? Tradesmen use a specialized machine and inspect and clean the pipe of debris. I am building a slab foundation, with 4'6" frost walls and 24"X8" footings. See our pages, Checking Over the Concrete Slab, Drain Pipes, and Plumbing in the Walls, for other items to review and check. Most modern homes have concrete slab foundations in which a layer of concrete is poured or placed onto a soil or gravel surface. Quick job, low cost, high value. Leaking pipes cost an average of $150 to $350 to repair, while diagnosing leak locations can add an additional $100. If we used a perforated Pipe under the slab water would drain under it and cause failure. The conduit would be 18 inches down, 1" in diameter (for ease of pulling wires), a total of about 30 feet in length, and would come up near the edge of the patio concrete slab, near the spa, where another short piece of watertight flexible conduit would be used to enter the spa shell. Pipe installed under the concrete driveway or sidewalk, and that will be used later to run sprinkler pipe or low voltage wire. To make them right I am going to run a gutter straight to the ground, and put a piece of PVC pipe under her sidewalk and drain it into the yard. We show you the best techniques and tools so you get concrete forms right the first time. Use a female adapter on the pvc pipe and screw on Rigid Steel Conduit 90 to stub-up through the concrete. Start with the pipe run furthest from the manifold area, with both ends of the tube sticking through your wooden tube tidier. Dig right next to the concrete to a depth about 6 inches below the slab, and below the gravel bed if there is one. The only time I got called for not sleeve venting was a 2" LP feed to a house generator on a stand alone 10x6 slab. How much does radon mitigation cost? The average radon mitigation system is installed for under $1,500. e does it have to be ducted? I know copper pipes need to be protected or run through a conduit but is it different for plastic? If cement is tightly packed around unprotected plastic, will this have any after affects? Thanks in advance. The tensile strength of concrete is typically taken as 10 to 15% of the compressive strength, so only about 400 or 500 psi. When nonmetallic conduits / tubing are used in or under floor slabs or concrete pours, change to steel conduit prior to exiting the floor or slab. Now, lay the new concrete and be sure to. I had to do the same thing when I ran the electrical wires under my concrete patio to my garage. Our supply line runs to the house through the yard. 2" and under is always schedule 80 piping. Don’t Bite Off More Than You Can Chew. Saving contractors time, money and worry, Kwikon is an. We decide to go under with a long steel pipe, a sledge hammer, and a garden hose with brass "jet" nozzle. 4 - Is it permitted to use flexible metal conduit over Ch. No special precautions need be employed in this instance, as PVC pipe and plastic fittings are sufficiently rigid to withstand the loading of the concrete. You got good advice about not using hardwood on a slab. Dug until we identified the pipe. We used a skill saw w/ a concrete blade and squirted water on the blade w/ a plastic bottle that had a pinhole in the lid. If you are hearing a constant sound in the background during your day, this may be a sign of an inside the wall pipe leak or under ground slab leak. rough in plumbing before concrete slab pole barn house ep 4 duration:. Dig right next to the concrete to a depth about 6 inches below the slab, and below the gravel bed if there is one. Water lines or station drainage lines run in concrete used to be carbon steel. Curb slab w-footing. This doesn't. A slab leak is an industry term for a leak within the waterline piping below the concrete floor. 95, you can dig under concrete!. Metal sewer pipes can be removed and replaced by digging a man tunnel or by splitting them with an expansion fitting/cutter that is pulled back through the pipe with a chain and then a sleeve is routed through the split pipe. The front corners of the house and garage are about 20 feet apart. So when we say a slab leak, what we really are talking about is the plumbing supply lines or drainage pipes in the soil below your slab leaking. The water lines come through the slab where needed with no sleeves. These changes are relatively small. Ridged, nonmetallic PVC conduit is the right material for this job because it is watertight, inexpensive and easy to work with. For homeowners, it’s a complicated and expensive repair, and like many plumbing problems, it’s best to catch the issue early on. A broken pipe under the slab can cause wet spots on your floor because concrete is a porous material. This is as approved by local structural engineers. On top of that, the cost to rip out concrete and repair the damage to the pipe can cost around $2,000. But, we don't want to disturbe the tile by cutting a trench through the concrete slab, since we don't have any way of replacing the tile. How to Run Conduit Before Pouring Concrete Step 1. I was out driving around few job sites today and stopped and looked around at some houses that were dried in waiting to be topped out and saw that they roughed in the water with cpvc pipe this house its on a poured slab , tell me this how do you run cpvc under a slab with no fittings , unless they sell it now in rolls or 100' sticks now and heat it up and bend it. This isn't as difficult as it sounds, particularly if you use PVC tubing. Additionally, if warm water is leaking from a pipe under your slab, it can create hot spots or small pools of water on the concrete floor. Obviously, Plenum jackets like to harden and crack over time, which doesn't mix with water too well. Multiple leaks in a pipe can make repairs quite difficult, and you might decide that rerouting your piping makes more sense. Problem: 50 year old galvenized pipe is failing, and replacing it requires getting under, over or around a 12 foot wide concrete patio. The idea is to get down to soil that will be easier to burrow through. Whenever possible the conduit should run straight into the vault without sweeps or bends. Copper pipe on ground under slab, typical water supply method in 1989 when house built. You may have a problem with the pipes in your concrete slab foundation if you're walking around your home and find your socks suddenly wet from some mysterious moisture. They’re concrete. The wire or cable can be run into the conduit by a pre-placed draw wire or just run the cable in with extra length. With one hand, grasp the sledgehammer by the handle as close to the sledgehammer's head as possible. Follow these steps to create a walkway out of pavers instead of concrete. HVAC ductwork in floor slabs: this article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs. Cut a hole through the soil under the slab foundation using a high-pressure washer. Tags we have a similar problem with a concrete slab foundation in Florida. Gas pipe to kitchen island under concrete slab; Author: electronherder (CA) I am installing a natural gas cooktop on an kitchen island on a home remodel. A slab leak when related to plumbing is generally a pipe leak under the slab (your home's concrete foundation). If you pour a concrete slab the full length of a wall and at a future date wish to install an electrical receptacle or lights either on the patio slab or on the outer side of the concrete slab, how will you get the electrical service to the area. All the work is done from outside of the house and no digging has to occur. HVAC air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories: functional troubles such as lack of air flow or collapsed ductwork, and environmental problems such as. Local plumbers can tunnel under the slab to repair it, Estimate from the company that used a camera - $16,000. Best way to trench concrete slab to run power to new kitchen island? The island is around 6' from the wall but thats on the side where the drawers will be so I was wanting to pop out on the backside which is around 9' from the wall. Use a metal-cutting blade or disc in a reciprocating saw, circular saw or grinder to cut the rebar. Repairing Water Lines. I call out Gas lines being buried under an exterior slab (without properly vented conduit), but when people ask how serious a problem this is, I have a hard time coming up with an answer. If your radiant tubing is to be installed on top of a subfloor or existing concrete slab, or on the walls or ceiling. Dug until we identified the pipe. On top of them is the concern that the water which is seeping up, may badly damage your floor. I have a question on conduit in concrete. Compression fittings shall not be buried in concrete screeds or concrete slab. I am putting in a new concrete floor at one end of my kitchen and want to run a water pipe in it to service a sink. Checking the plumbing layout in a concrete slab before it Mar 17, 2019 – concrete slab plumbing diagram – Google Search. Under Slab Plumbing in Houston, TX, quotes $10,275 total for an “average" under slab plumbing repair job that consists of $3,600 for outside excavation and replacement, $6,250 for the under-slab portion, and $425 for engineering and permits. Does the slab have to be in direct contact with the earth. Keep your embedded conduit runs at least 2 inches back (or structural engineer's requirements) from the finish to avoid "pop-outs", and allow space. The area for the radio is about 30 feet from where I want the coax to exit the building. Repairing Slab Leaks: The first step is to remove the flooring that is covering the leak. Once you have the cuts made, the concrete will break out fairly easily. Cost to Fix Leaking or Burst Pipes. Technically, slabs don’t leak. Detecting an under slab leak costs about $150 to $400, whereas the cost to tear out the concrete, repair the pipe, and pour concrete again can cost $2,000 or more. Can you pour concrete over electrical lines. It's like no news is good news. Install gas pipe from a gas meter only in the townhouse served by the gas meter. Your floor should be a minimum of 4” thick. I have two tanks and one of these days I need to check them one of them out as its close to 20 years old plus the level gauge isnt working. The 1st Solution is that, You have to go through the MEP drawings, (Mechanical,Electrical,Plumbing) Provided by the consultant. To give further info, we are building our own house with a integral garage, we propose to have the gas central heating boiler in the garage, towards the back, the gas meter will be semi concealed or is it semi submerged (I forget the term) outside at the front of the garage to one. Have the concrete drilled and run it in the conduit, it is the correct way and it is also much safer for you and your family. The first sign of an under-slab leak can be an uneven floor area, wall crack, or doors that have begun to stick. If you pour a concrete slab the full length of a wall and at a future date wish to install an electrical receptacle or lights either on the patio slab or on the outer side of the concrete slab, how will you get the electrical service to the area. I would run PVC pipe at least 4 inches in diameter under the slab. I can get a T section and connect the pipe to that. Additional rebar was set where the car lift will be installed to reinforce the floor. Problem: 50 year old galvenized pipe is failing, and replacing it requires getting under, over or around a 12 foot wide concrete patio. Purchase a length of 3" PVC electrical conduit and put the sweep in the ground below the footing and use another 18" piece of 3" PVC for a riser that will be above the floor about 1" out from the wall, at the wall section. If underslab, water lines should be protected from damage that can occur during backfill. I would call up the Housing Association and insist they supply you with heating until the job is complete, otherwise you will take the matter further. Yes, you need to run the speaker wire under the concrete slab in a conduit. This reduces the chance of water leakage. A known issue is a collapsed drain pipe, which typically happens because of too much clogs present, as well as neglect and improper maintenance. Construction - Concrete Work - Plumbing and Electrical Rough-in Under Slab Floor After the water supply rough-in was complete, one last job remained before pouring the floor -- running electrical conduit. We are not going to give you the generic “it depends” answer. ACI has referred me to the GUIDE TO CONCRETE FLOOR AND SLAB CONSTRUCTION (ACI 302. This variation in soil moisture under a house is what causes slab heave. Attach the male hose adapter to one end and a PVC. How to Run Plumbing Under Concrete. SmartTrac will fit your project. Attach the end of the UF cable (or individual THWN wires) to the end of the fish tape, then carefully pull the cable back through the conduit. If you are using high shrinkage concrete, you might want to decrease the cut spacing. For example, for 100mm thick slabs purchase 100mm x 50mm timber to make your formwork. e does it have to be ducted? I know copper pipes need to be protected or run through a conduit but is it different for plastic? If cement is tightly packed around unprotected plastic, will this have any after affects? Thanks in advance. This is the way it has to be with Eichler homes. The length of the WC soil pipe (the pipe is shown in green on the new plan) will be approximately 3. Checking the plumbing layout in a concrete slab before it Mar 17, 2019 – concrete slab plumbing diagram – Google Search. If you pour concrete on speaker wire, it will be okay for awhile, but over time, the chemicals in the concrete will corrode the outer covering on the speaker wire. Experienced concrete finishers. pretty simple to spot the hotter pipe. Then the concrete is poured and the foam also keeps the concrete from contacting the copper pipe. The blue Tapcon work well for this if you have them where you are at. For instance: if you are running 3/4" Schedule 40 PVC than run it through 1 1/4" PVC sleeve. Concrete Slab Foundation Problems and Defects Unless you have problems your concrete slab foundation is something you probably don’t really think about. There are a couple of easy do-it-yourself methods for boring a hole underneath an area of sidewalk. We are not going to give you the generic "it depends" answer. Tags we have a similar problem with a concrete slab foundation in Florida. 3 of ACI addresses embedded conduit in slab, and limits the maximum size to 1/3 of the overall thickness of the member. Concrete strength also comes into play, but most slab concrete is around 3000 to 4000 psi, so it's not a major factor. You want to make sure if there is any soldier joints under slab they are silver solidered. For over 50 years, Crete-Sleeve® has been producing the highest quality plastic hole forms for the construction industry. We show you the best techniques and tools so you get concrete forms right the first time. Dig a trench deep enough to provide 2 to 3 inches of gravel on top of the pipe along this line with the shovel. If the concrete is placed directly on the soil, water will also wick into the concrete slab by capillary action. per 100 ft of pipe. But, in relation to issues that affect what I can attend to, I believe the pipe must be at least 25mm from the floor surface. Place the Sidewalk Sleever just under the concrete and tap in a few inches. Slab leaks can have many causes, lead to significant damage, and become very costly to repair. This is what the gas fitter attends to. We can now attach our Elbow on the house side of the PVC Pipe with PVC glue. Excavate the slab area to a depth of about 7 inches, allowing 3 inches for a gravel base and 4 inches for concrete. We know you want some idea of the cost of under slab plumbing repairs. Concrete floors. 5: "If a vapor barrier or retarder is required. Signs that you might have a leak under the concrete slab of your home include: A sudden decrease in water pressure; Water collecting in areas it shouldn't. Run IMC conduit from the GFCI receptacle to 4 inches above the bottom of the trench, and then install a sweep fitting to the bottom of the trench. 1 for water pipe & one for electrical. This cost may be the starting point. Use a metal-cutting blade or disc in a reciprocating saw, circular saw or grinder to cut the rebar. This reduces the chance of water leakage. The answer to who should pay for the repair lies in your governance documents. With epoxy and air pressure, a new pipe is set inside the old pipe in about 2 hours. The job on the concrete floor is completed and the concrete groove cut can re screeded or sealed with cement or floor finishes. Then the concrete is poured and the foam also keeps the concrete from contacting the copper pipe. Once the broken pipe is isolated, repairs can be made. Infrared or thermography can also help find leaks in sewer piping under a slab. Make concrete using concrete mixture to repair the floor you have broken up. I'm looking for thoughts on repair. You'll have to cut a trench in the concrete for a PVC conduit, which will carry the electrical cable under the floor. Repairing a Sewer Pipe Under a Concrete Slab | CV Plumbing Heating & AIr. Clean the surface by a water jet. Beginning in 1989, the American Concrete Institute (ACI) recommended the installation of a 4-inch layer of granular material between a sub-slab vapor retarder and a concrete slab. 8 Btu/hr/ft 2. going through both the slab and all beams. Plumbing is never installed horizontally through a concrete slab-on-grade--a slab that is on the ground. I've dug up many ferncos in the ground and they was no break down in the rubber, so take it anyway you like, some perfer no hub banded coupling but I. It can also run under. We decide to go under with a long steel pipe, a sledge hammer, and a garden hose with brass "jet" nozzle. Once the concrete or leveling compound is fully dried you can lay the final floor covering. Tree roots can obstruct any portion of a plumbing line. Pipes located underneath the foundation of your home transport water to your plumbing fixtures. Simply stated, a slab leak is water that leaks through a slab of concrete. Can you pour concrete over electrical lines. This process minimizes unnecessary removal of concrete flooring. It turned out the kitchen drain was very corroded (too much Liquid Plumber), and the pipe broke off at the slab -- no way to attach a new piece of pipe, and jack-hammering the slab to try to expose more pipe seemed a lost cause. HVAC air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories: functional troubles such as lack of air flow or collapsed ductwork, and environmental problems such as. Ideally, the concrete slab which is 3½ to 4 inches thick should sit on the concrete footingsor if they are not level, the highest concrete footing. The slab covers some of the ground and stops it from getting wetter or drier. How To Know If Your Home Has A Post-Tensioned Slab Foundation. Never use PEX fittings of any kind (brass or poly) in a concrete slab unless it is necessary for a leak repair. If you pour a concrete slab the full length of a wall and at a future date wish to install an electrical receptacle or lights either on the patio slab or on the outer side of the concrete slab, how will you get the electrical service to the area. I need to run hot & cold supply, greywater drain, a gas pipe for the dryer and 2 electric circuits. I would have thought that the car's weight on either edge of the slab would more likely tend to crack it open in the middle at the top. So I am assuming that the pipe has broken somehere under ground, most likely under the slab. Age is another cause of plumbing line failure with cast iron and concrete pipes that are in excess of 40 years. You may run into some difficulty with the transition from metal pipe to PVC and back. Keep your embedded conduit runs at least 2 inches back (or structural engineer's requirements) from the finish to avoid "pop-outs", and allow space. Slab Leak Detection. Yes, you need to run the speaker wire under the concrete slab in a conduit. Ensure that the slab and/or vapor barrier do not cover the vertical opening of the T connector but are sealed around it. 24” and 27” sizes in SDR35 pipe are 10-30% more costly than concrete pipe. Your slab is to be the same width as your building, and 2″ longer. I've never done this. This will allow the tool to hold itself off the ground making it easier to install and also easier to remove the tool after installation. BTW: NONE of my plumbing is "in or under" concrete, well unless you count the 2, 4" Conduits running from the Power/Pump house to cabin. Connect the water line to the main water pipe. Re: New Gas Line under patio slab and bricks Like Ed said, I would definitely do hydraulic drilling (actually Hydro using water) to go under the concrete instead of cutting it up. Spray it with a light mist of water, cover it with plastic sheeting, and allow it to cure for three days (longer in cold weather). 3A: A fuel tank elevated above the DFE on a platform in a velocity flow area Yes, PEX pipe can be installed under a concrete slab. Denzo tape is used on copper pipes, and a double coveing to make sure. Make concrete using concrete mixture to repair the floor you have broken up. They’re actually to keep moisture from the concrete from rusting the equipment. Slide bar A metal bar on which a variety of forming accessories can be attached and slid into the desired position. Hold a chalk line at the start of the electrical run -- pull out the string to the end location of the conduit. The signs of a collapsed drainpipe under a slab and broken sewer pipes can become brittle, degraded or corroded for a number of reasons. You can adjust the concrete cutter to the correct depth. Re: Natural gas pipe under concrete; Author: lbeacham (NC) I went by and looked at this pipe, this morning. The pipe is strong, flexible and withstands the weight of the concrete. It is normally used in concrete slabs or walls. Here are some quick quality checks for your water and sewer service and under slab plumbing to improve your chances of a trouble-free installation. I had various product samples for the walls plus quite a few questions about details of the next stages of the build. 5: "If a vapor barrier or retarder is required. On the other end of the pipe glue a slip to male thread pvc adaptor and a female hose fitting. The weaker the subgrade, or the heavier the loads, then, the thicker the slab needs to be. Under your driveway, the conduits must be below a depth of 18 inches, and under a public road or alleyway, they must be buried below 24 inches. Get the rough-in right, and you are 90 percent of the way there. No matter how complex the problem, it can be solved efficiently. in the desert its much more efficient for a/c ducts to be under the slab then in an hot attic, also moisture is not as much of a problem here. HVAC ductwork in floor slabs: this article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs. We can now attach our Elbow on the house side of the PVC Pipe with PVC glue. Pipe stub outs are the sections of pipe that feed from the lines run underneath a slab or building, through the slab, then connect to appliances, or eventually continue on to the upper levels of your building. Detecting & Repairing Slab Leaks When an underground pipe beneath your home’s concrete foundation breaks, we call it a slab leak. Leaking pipes cost an average of $150 to $350 to repair, while diagnosing leak locations can add an additional $100. The short version: I have an old PVC sewer drain pipe that comes up out of a concrete slab floor. Compression fittings shall not be buried in concrete screeds or concrete slab. Also, any wiring that will go under the concrete needs to be placed in a conduit and roughed-in. Originally I plumbed 18" (across) under the slab and stubbed up under unit nice and clean. The slab's performance over decades of future service life is now fixed. BulletMole®: The fastest, easiest, cost effective, way to install irrigation pipe or electrical conduit under sidewalks, driveways, and other hardscapes. I dug up all three copper pipes and replaced them with plastic pipes run in a plastic flexible conduit. Curb slab w-footing. 5 cubes, which is probably closer to where you will end up with footings ect. It is best to avoid running plumbing pipes through the slab. BTW: NONE of my plumbing is "in or under" concrete, well unless you count the 2, 4" Conduits running from the Power/Pump house to cabin. Another way I go under concrete is to dig a trench on one side of the slab, get a 1/2 inch copper pipe cut to the length of the hole, in your case about 5 feet, take a hack saw and cut one end of the pipe at a sharp angle and solder a brass nut (a number 10 nut should work) inside the pipe at the base of the angle. Do not install gas pipe from a gas meter in or through another townhouse. Use a metal-cutting blade or disc in a reciprocating saw, circular saw or grinder to cut the rebar. I can't say that I've ever had to replace a copper tube that was corroded by concrete, but as Mike pointed out, in new construction it is very easy to isolate the tube from the concrete anyway. This process minimizes unnecessary removal of concrete flooring. Next step is the new pipe running to the existing drain line, which is also under the concrete slab. If all the faucets in the house are off and you can still hear a slight sound of running water, you may have a serious leak beneath your floor or walls. Under Slab Hydrostatic Testing. To plumb a basement bathroom, start by locating the main drain run. A typical cancrete slab is 3"- 4" thick. Then the concrete is poured and the foam also keeps the concrete from contacting the copper pipe. Work quickly so you do not remove too much soil. We are soon pouring a 2. CeraZorb® is a 3/16-inch (5-mm) thin synthetic cork underlayment that is highly recommended when installing a floor heating system over an existing concrete slab or under tile and stone. Any heating system ductwork in or under a slab must be insulated to R-5 with insulation manufactured for this use. Whether it is to be directly set in concrete or passed through a tube (plastic or copper) previously set on concrete. If your Pex tubing will be in a sand bed underneath the slab, you can use straight conduit lengths of about a foot, which should protect the pipe as it passes through the slab. Ensure that the timber for the formwork is the same height as the thickness of the slab you want to pour. For some reason, gas comes from the city main to the roof of the church--to service several gas packs up there, I think; then a 2" iron line runs down an outside wall, through a concrete slab that was poured two years ago during a renovation; it then makes a right angle turn, goes. When nonmetallic conduits / tubing are used in or under floor slabs or concrete pours, change to steel conduit prior to exiting the floor or slab. You need to protect your speaker cables by running them into a conduit. It turned out the kitchen drain was very corroded (too much Liquid Plumber), and the pipe broke off at the slab -- no way to attach a new piece of pipe, and jack-hammering the slab to try to expose more pipe seemed a lost cause. Curb slab w-footing. Our supply line runs to the house through the yard. Under your driveway, the conduits must be below a depth of 18 inches, and under a public road or alleyway, they must be buried below 24 inches. Re: tracing pipes in slab i use my infrared thermometer to locate overhead waste lines from the ground. Compression fittings shall not be buried in concrete screeds or concrete slab. The first one would be filled with gravel to filter the water, hair etc. Assemble and Erect Formwork for Slab2. Your soil treatment company may want to wait until the rough-ins are completed before treating the soil so it won't be disturbed by digging in the plumbing. Be sure to take that into consideration when digging the initial hole (and trench). Just wondering what the best size to run would be. Attach the male hose adapter to one end and a PVC. The line goes under the retaining wall that divides the lower west side of the yard from the upper. Tips for Running Drain Pipe Under a Sidewalk. In solid rock, sink them into the rock so the upper edges are 2 inches below the rock surface, and cover them with concrete. I may need to place some as far under the slab to help support the slab in varying places, and also some on the edge of the slab, but at one point the slab is 30 or so feet wide, and I won't be able to get very far underneath it at that. Made the repair to the Poly Pipe. Jimmy showed up at the job site with a large 16-foot-long six-inch diameter steel pipe that had a coned-shaped metal end. Construction - Concrete Work - Plumbing and Electrical Rough-in Under Slab Floor After the water supply rough-in was complete, one last job remained before pouring the floor -- running electrical conduit. b) Steel or copper pipe installed into preformed ducts with. This doesn't. The vertical pipes go up through the slab where they are connected to plumbing fixtures above the slab. How do you repair a drain under a concrete slab? So, how do you repair a drain under a concrete slab? Stopping concrete cancer and cracking needs to be the top priority for homeowners to prevent ongoing damage to the building, and there are a few steps that should be taken. Keep your embedded conduit runs at least 2 inches back (or structural engineer's requirements) from the finish to avoid "pop-outs", and allow space. Use an electronic leak detector to pinpoint the location of the leak. Conduit doesn't provide much in the way of strength and can often weaken the concrete if not installed correctly. Tree roots can obstruct any portion of a plumbing line. Within the concrete foundation, wire mesh and steel reinforcing bars are embedded. z Multiply m^2 of slab by 0. Compression fittings shall not be buried in concrete screeds or concrete slab. Spray it with a light mist of water, cover it with plastic sheeting, and allow it to cure for three days (longer in cold weather). The slab foundation, constructed of concrete, fits over footings also made of concrete. If possible, go with a plumber that lists slab leak detection or repair directly on their website, indicating that they have experience. When running wire short distances with few bends, such as between Boxes 2 and 3, and 3 and 4, you can simply tape the two wire ends together and push them through the conduit (Photo 13). A plumber used a piece of wood placed between his ear and floor to help amplify the sound. Reinforcing steel may be required within the slab and around the trench drain - engineering advice should be sought to determine. A slab leak when related to plumbing is generally a pipe leak under the slab (your home's concrete foundation). Get a slab leak repair by calling a Licensed Plumber. PEX pipe can also be encased within a slab, which is commonly used for radiant floor heating. The wire or cable can be run into the conduit by a pre-placed draw wire or just run the cable in with extra length. Heating a concrete slab from cold takes a relatively long time, at least several hours, but once at operating temperature, it will radiate heat consistently. Drainage pipes, including those under slabs, must be laid in trenches with a minimum width of the diameter of the pipe plus 200 mm – 100 mm on either side of the pipe. We need the receptacles for lamps, etc. Bored wells are usually constructed using the buried slab method. This is not going to be that expensive and this will give you room to run several pieces of coaxial cable, rotor control cable, etc. Do not run NM and AC cable inside masonry cells when the cells are subject to dampness and when they are below grade. Lift the hammer as high as possible, but not directly over your head. A known issue is a collapsed drain pipe, which typically happens because of too much clogs present, as well as neglect and improper maintenance. With one hand, grasp the sledgehammer by the handle as close to the sledgehammer's head as possible. Testing of water lines and waste lines should take place before concrete is placed. As long the conduit was under the slab, or even in the slab. I picture the process being like fishing wires -- but on a larger scale. I've never done this. However, if you have to run it through a foundation wall than run it through a larger sleeve ( larger diameter piece of PVC pipe inbeded into concrete before pour ). Hydronic tubes that are cast into concrete slabs will create an uneven heating pattern in the concrete thus causing uneven stresses to occur within the concrete slab. Gas pipe to kitchen island under concrete slab; Author: electronherder (CA) I am installing a natural gas cooktop on an kitchen island on a home remodel. Running conduit under concrete floors Hi All, I have a general question about running conduit under a screeded floor around the house and wondered how others have managed. Drainage pipes, including those under slabs, must be laid in trenches with a minimum width of the diameter of the pipe plus 200 mm - 100 mm on either side of the pipe. (Did I mention I live in Oklahoma, where we've been, until recently. Aluminum cannot be embedded in concrete as aluminium reacts with the alkalis in cement however it might be protected with coatings to prevent concrete from affecting the conduit. Stay on that side of the building but shoot Seraphites across the way. I've got several Plenum feed cable's going to each IDF from the MDF, via conduit in concrete slab. Slide the pressure washing wand into the pipe and start to tap the pipe under the sidewalk as the water cuts the channel. Seems that the ground under the drain line has shrunk or subsided since the house was built, so there is a bow in the line. Hi, I am wanting advice on what is permissible with regard running a gas pipe under the concrete slab of a garage. In solid rock, sink them into the rock so the upper edges are 2 inches below the rock surface, and cover them with concrete. , I am sorry you had a water pipe break in your unit. I'm looking for thoughts on repair. The system is laid in individual pipe lengths of pipe, leaving no fittings under the slab to create vulnerable weak points. If the top of the slab will be much higher than the surrounding grade, several truckloads of sand may be required. Collapsed Drain Pipe Under Slab. Contents:Concrete Floor Slab Construction Process1. It turned out the kitchen drain was very corroded (too much Liquid Plumber), and the pipe broke off at the slab -- no way to attach a new piece of pipe, and jack-hammering the slab to try to expose more pipe seemed a lost cause. I would feel more comfortable if I not only ran it through pvc elbows, but through pvc for the length of the run as well. Lap any seams in the sheeting by 6-12 inches and seal the seams with a continuous bead of acoustical sealant, butyl rubber, or butyl acrylic caulk, or with tape. Detecting & Repairing Slab Leaks When an underground pipe beneath your home’s concrete foundation breaks, we call it a slab leak. Often times the pipes that run underneath your home are copper tubing so the repair process is pretty standard. so slab only, at 85mm thick and 310 high is 38. Concrete Slab Mounting Slab Sizing. and the plastic will be left as a capillary break under the wall plates for the long run. Never use PEX fittings of any kind (brass or poly) in a concrete slab unless it is necessary for a leak repair. I would appreciate any advice on the best method to achieve this. I also agree with other posts. Then the concrete is poured and the foam also keeps the concrete from contacting the copper pipe. The easiest way to run cabels in a concrete floor is to run the cables through plastic conduit before screeding. If possible, go with a plumber that lists slab leak detection or repair directly on their website, indicating that they have experience. In 12” and 15” diameter sizes, SDR35 pipe is 25-45% more costly than class III or IV concrete pipe. Avoid creating high spots near the edge of the forms by bring the bull float blade all the way to the edge of the form. Conduit doesn't provide much in the way of strength and can often weaken the concrete if not installed correctly. (condensation will make the pipe very wet). I have a question on conduit in concrete. To run under the slab you would need a bullet mole. I can't find a code reference as to the required depth of the conduit. for those. After casting the slab, do not allow the surface to dry too quickly or it may crack. Run the gas pipe in a duct under the floor, perhaps using TracPipe or similar. Figure 2 Clearance between pipe and slab. Most CPVC systems need not be designed using an abundance of fittings or joints. The concrete was 4" thick and the insulation under the slab was 2" thick. If you suspect that you have a water leak underneath your concrete building slab or foundation, you can do a simple water. Get a slab leak repair by calling a Licensed Plumber. 5" conduits between the building. This article explains how to dig and run pipe under an obstacle such as a driveway or sidewalk. The best spot for that trench will be underneath a flooring strip that runs perpendicular from the nearest wall to the spot where your island will be. Once you have fixed the drainage issue and repaired the concrete, you can be fairly certain that the repaired area will not match the surrounding, original concrete. Water lines can be run under the slab or in the attic. 75cubes, and at the other end 52. If possible, go with a plumber that lists slab leak detection or repair directly on their website, indicating that they have experience. •Accurate method, but slower than GPR for voids surveys. We would need: 150 mm of hardcore, 50 mm of sand, 1200 gauge membrane (plastic sheet), 100 mm concrete slab, 85 mm insulation, 60 mm screed and then, finally, our tiled surface. I had a water/plumbing leak under my house slab, for which the plumber had to rip open several tiles to get to teh leak, but once he repaired it the pipe started leaking just a foot away from it and that continued 3 times. chlorinated polyvinyl chloride (CPVC) pipe and tubing are intended to be installed in access-restricted locations such as within walls, above ceilings, and within or under poured concrete slabs. Locate Pipe Under a Concrete Slab Kitchen and bath remodels in houses built on concrete slabs offer their own unique set of challenges, not the least of which is tying the new drain system into the home’s sewer line. Figure 2 Clearance between pipe and slab. Locating a leaking pipe under a slab is a two step process. While other materials are occasionally used when building home foundations, concrete slabs are by far the most popular. A pipe that slopes too much drains water but not solids. In north Texas there are generally three ways plumbers in our industry replace pipe under a concrete slab. But the overwhelming cause of premature plumbing pipe failure under concrete slabs is soil movement. Vapor Retarder Instructions - Under Concrete Slab VAPOR RETARDER PLACEMENT 1. Electrical conduits through the slab must be water-tight, as they extend below ground level and can potentially expose wiring to groundwater. Our supply line runs to the house through the yard. Under the floor, the other end of the pipe connects to other drain pipes in the house, so before I cover the area with more carpeting, I'd like to seal that pipe off permanently to avoid any possible leakage in the future. Under the slab, copper water pipe can be rolled out and lie right on top of grade. I am a certified electrician and doing that is against the National Electric Code. in the middle of a large family room, that will have hardwood floors. Cheers all. Keep your other hand toward the end of the handle. I would like to sleeve the foundation walls so I can run conduits between the buildings, for future services. Poor site conditions and low load bearing pavement will require an increase in these dimensions to meet both vertical and lateral loads. This allows for wiring and drip systems to be run from one side to the other. 1 for water pipe & one for electrical. It sounds as if this connection cannot be downstream from the toilet. I'm looking for thoughts on repair.