Since 5-foot spacings wouldn't fit well into the previous 24-foot spacing pattern, you would probably want to reduce the spacings to 4 feet. Almost as if you were peeling the raised portion with a knife. For slabs less than four inches thick, use a sledgehammer. After you've determined you can pour new concrete over your old concrete, here's how you prepare your old concrete. Strike different parts of the surface to create more cracks. For this to be feasible, the contractor needs to pour at least 2 inches thick, use smaller aggregate, and incorporate reinforcement such as welded wire mesh or fiber mixed into the concrete. Step #1 - Dig around the post until six inches of the concrete footing is exposed. Fast and cheap. For more than four inches thick, use a demolition hammer. It will also highlight the proper method you may need to follow to take care of your concrete floor while removing the carpet tack from concrete. When the piece breaks free, remove it from the . 28 days - at this point, the concrete should be fully cured. While clearing the area in front of my wood fence gates, I found about 2 inches down, a steel post. Ensure that you lay the grinder's disc flat against the high spots you're planning to grind down. 2. Begin by slamming the sledgehammer into the concrete along the slab's edge. 1. Pound the threaded stud of the sleeve anchor into the base material. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased. To estimate costs for your project: 1. That also applies to this pouring new concrete over old concrete. Insert the anchor bolts into the holes and fill with the mixed epoxy compound. 100 x .33 = 33 cubic feet. Get a bag (or 2 depending on how much you need) of Sakrete/Quickrete from a box store and mix some up. 2. Continue to pack dirt under the extension pipe until the slope reaches 1/4 inch per foot and all hips and valleys disappear. Most rental places have these and they can be quite efficient at cutting through reinforced concrete. Carefully line up your bit and drill. Sand down the area surrounding the bolt to about one inch outward with a concrete sanding blade. A circular saw with a masonry blade can also be used to either score or completely cut through the block. The range you should expect to pay for removal and demolition is between . Sand or cut down the top of the bolt so that it is below the surface of the concrete. 15. If the conduit runs vertically, you will need to build a column form with four sides and pour the concrete from the top. Use bleach or hydrogen peroxide to kill off the bacteria that are responsible for the smell. Use a sledgehammer for thin slabs. For concrete, the formula for volume is as follows: length x width x thickness. Nice,. 33 x .037 = 1.22 cubic yards. 1. 3. If the sleeve anchor cannot be pounded into the base material, then cut the stud off with either a hacksaw or cutoff . Hire concrete professionals, who have the experience -- and the equipment -- to saw, smash, and remove a slab in no time. One of the concrete pros should be along for best advice. If it must be removed, no other alternative, this sounds like a job worth paying someone else to do. Take frequent breaks and keep yourself well-hydrated. The size of the chunks you remove is limited by your ability to lift and dispose of the concrete. In fact, concrete grinding contractors normally charge around $0.75-$2 per square foot for light concrete sanding. If your concrete is 4 in (10 cm) thick or less, try using a sledgehammer. If you are using a drill without a built-in gauge, you can use this chart to . For the free how-to guide for this video, go to:. Excavate the slab area to a depth of about 7 inches, allowing 3 inches for a gravel base and 4 inches for concrete. Floor Leveling On Concrete Preparation Uneven Floors. Remove all debris from the crack, using a wire brush. Repeat this process until the high spot is completely gone. The article aims to answer the question "How to remove 2 inches of concrete?". If the hole beneath the anchor is deep enough, simply pound it into the concrete with a hammer. The best way to speed up concrete removal is to create a void underneath the section of slab . If it's too late and concrete has already hardened and blocked pipes, the best course of action is to have a CCTV inspection to ascertain its location and size. Make a guide hole first. It can create a fault line in concrete, blow by blow, and be a key player in your concrete removal toolbox. Remove anchor bolts from the loose support posts and clean dirt or loose concrete from the bolts and holes. In this video I show you a simple way - using just TWO basic hand tools - to break up that old concrete slab. Go back into the "- to "-deep cut and continue doing intermittent cuts that are no longer than 30 to 45 seconds of running the saw. 2. or hire someone to grind down the slab region that is higher; big expensive messy job. The average concrete patio is 100-400 sq ft, so the cost to demolish the average patio and remove the debris is $300-$2,400. You might look into renting a handheld concrete saw and cut it up into smaller pieces to remove with a prybar or sledge hammer. The costs will be about the same. Close air and heat vents. Start out by digging a whole about two to three feet in diameter around the post. I will be tilling the clay with soft dirt and fertilizer before the sod; landscaping. Break pieces 2-3 inches (5-8 cm) away from each other to minimize chances of a . chipping gun). Step 4 - Separate the Foundations if Needed. Concrete Patio Removal Average Cost. All you need is a hammer and a pry bar or cat's claw to leverage the mesh up and away from the studs and remove the fasteners. Prior to placing concrete forms: Construct the form with 2x4 or 2x6 lumber and secure in place by wood stakes and deck screws. Try making cuts with the cold chisel or the 4-inch saw blade to help weaken the concrete and keep . Hire a concrete demolition company. If your looking for a qualified concreter to pour your concrete you should contact concreters Goldcoast. That is the standard thickness f. This makes the floor ready to install a new floor covering. When working with cement-based products, always wear eye protection and waterproof gloves. If you have solid concrete steps, you have a long and dirty job ahead of you. If you're new concrete is under 3" thick, apply Weld-Crete, let it dry at least 1 hour, then you're ready to pour your new . At the surface be sure to dome the soil so water runs away from the post for good drainage. It's basically a human-powered jackhammer. Step 1. This allowed me to get a 1.5 inch slope on the new concrete away from the house. Taking advantage of what Rampart Hydro Services calls "coincidental and beneficial removal," loose or slightly damaged concrete near the removal area that might well be missed by mechanical demolition also is removed by the high pressure water. 2. This is easy to do if it is to remove a small hump that has developed in a floor, but for an entire floor takes a lot of effort. Sep 10, 2022. This is called "undermining." Step 2: Put the Hammer to Work Start by hitting the concrete with the sledgehammer near the edge of the slab. Concrete is a material comprised of a number of coarse aggregates (particulate materials such as sand, gravel, crushed stone, and slag) bonded with cement. Release the blade lever and move the base plate that surrounds the saw until 2 inches (5.1 cm) of the saw is exposed. To make new cracks, strike different regions of the surface. The pros can also dig out the gravel subbase down to the soil. How hard is it to remove concrete patio? If the conduit is elevated then you will need to build a gutter with a bottom and two sides that is supported below the conduit. I ended up pouring the new concrete 4 inches thick up by the house and 1.5 inches (thin) by the lawn. Concrete patio removal costs anywhere from $3-$6 per square foot on average, including debris disposal. Concrete Block Basement Repair Outdoor Basement Stair Railing Design . However, there are a number of factors that will affect the cost of your project. Remove the nut and washer and the round or flat head of the sleeve anchor. Use your shovel to dig underneath the slab from the side and pry the concrete off the surface underneath once you've started making cracks. After removing about 4 inches, the dirt becomes very clay-like, so I don't anticipate any settling. Chisel the crack with a hammer and masonry chisel to widen the base of the crack and to dislodge any loose material from the old concrete. Top methods for basement water removal how to clean a flooded dry out wet fix get remove from room 6 cause of in your and solved bob vila cleanup 3 ways waterproof the what do. 7 inches of concrete is no laughing matter, plus all the fill and foundation stuff beneath it - you're going to have a deep hole to backfill. To determine how many bags of concrete you will need, divide the total cubic yards needed by the yield. Cut off the threaded, above-ground section of the anchor. You will need a marker or piece of chalk, a core drill, and a two-inch carbide masonry bit. If done properly, new concrete can often be poured right over an existing slab. Getting the soil wet first can make this much easier. The steel post is obviously an old galvanized chain linked fence post that was since demolished and the post cut flushed to the ground. . If desired, clean the crack with a pressure washer or a garden hose and spray nozzle. Trowel it in and smooth it out. Remove all water and debris from the crack with a wet/dry shop . Using a big gas powered saw for such a small cut is going to be a pain in the arse. Cover the concrete slab with 4 mil plastic sheeting if you're working near windows. After that, any concrete fill and rebar that may . Step 2: Empty the room of all removable furniture and fixtures. Step 1: Create a Void Under the Concrete. Considering you used the word "slab" it's likely to be bearing weight of some kind and 2" is too thin. They are always hard to start (like a chain saw). Any thinner than 2 inches would be too thin. But the threaded rod protruding from a sleeve or strike anchor can be removed and patched by following these steps: Remove the nut and washer from the anchor. 4. Hiring a contractor just to demolish a 12 x 14-ft. patio could cost you $1,400 or more. For more than four inches thick, use a demolition hammer. Step 3. Share. Rent an electric demolition hammer (a.k.a. While there are many types of cement, Portland cement is the . Begin by slamming the sledgehammer into the concrete along the slab's edge. Thus a 2 1/2-inch topping would require joints every 5 feet in both directions. There is a reason why the bags give you a size approximation coverage at 4" thickness. After you've made the guided cut, remove the guide board. The hole you prepare should be 1/2 inch deep, and the anchor should penetrate the concrete with a minimum embedment of 2-1/4 inches. How to Cure Concrete. Dig under the concrete if you're able to do so. Start to break the concrete, starting six inches from the edge and working your way in. Answer (1 of 11): Depends on your application but likely the answer is no. Photo 2: Cutting hollow concrete blockfirst, score the line. If the extension pipe does not slope down to the old drain pipe, lift the end of the pipe and pack dirt underneath. (Use vise-grips or a chisel holder to save your fingers from the hammer.) How To Pour A Concrete Slab For Beginners Diy You. This rule is that the joint spacing should be twice the distance in feet of the thickness in inches. Concrete Floor Requirements 2 Post And 4 Lifts Bendpak. for more how to concrete videos http://www.howtocement.com/How-To-Grind-Concrete-Grinding-Cement.htmlthanks to http://www.OhioConcreteRepair.com for providin. I have bad memories of using those things way back when I did concrete work. Essentially you are solving for volume and then converting to cubic yards. Concrete forms can be removed 24-48 hours after the concrete has been poured and finished. FWIW I think you could just fill it with some concrete. If you have the disc in place, start moving the grinder in a front to back or side to side motion until the high spot is ground to the floor level. Especially if it is a softer variety tensil strength. Use a rasp or file to file away the concrete at the desired location. We have seen people take off up to a 1/2 of concrete with a grinder by being persistent. The use of water curing and curing compounds are two ways to ensure that a fresh concrete slab retains enough moisture to achieve its desired strength and durability. Allow gravity to do as much work as possible for you. Upvote. It is hooked up to the Makita dust vac to help control the harmful concrete dust. Steel rebar is also a good idea if the slab is thick enough to allow it. how to break up concrete using the Hilti Te2000 AVR, breaker. 7. Allow gravity to do as much work as possible for you. [5] Always unplug the circular saw before adjusting blade depth. To make new cracks, strike different regions of the surface. Step 5. That's a savings of about $1,000 on the cost to remove a concrete driveway. Concrete removal generally goes quickest if you have one person breaking apart the concrete and another following along and prying the pieces apart. Step 3. Upvote. Put the post in the hole and start adding a mix of gravel and soil. A typical driveway removal costs $1,500 - $2,500 and up, but this is highly dependent on the size of the driveway. If your cut doesn't need to be exact, use a cold chisel and hand sledge to cut the concrete. Attach a metal cutting blade to a rotary tool. A rasp or file coated with tungsten carbide or diamond bits will make the work go faster. 08/31/2007 3:36 PM. How to remove 2 inches of concrete? When considering how thick you want the new concrete to be, it is important to consider the surroundings where the concrete will be. How To Pour A Concrete Slab Diy Family Handyman. Any loose or delaminated concrete is automatically reduced to small 1/2-inch pieces. Remove wall hangings and window treatments. My guess - you'll be at it for a week if not more. Tamp the gravel firmly every 2-3 inches as you fill the hole and plumb the post. Step 4. Your PLANT beds need to be at least a foot or more higher . Cover everything left in the room, which commonly includes built-in cabinets and countertops. If you want to try your luck at speeding things up, expose roughly . Before we actually worked on my sidewalk, we took a little time to test the 7" angle grinder with the diamond cup wheel on a block of concrete. For slabs less than four inches thick, use a sledgehammer. Often, you'll find the wider the hole you make the easier the rest of the process will be - even the digging will be easier. Note: If this is a concrete block wall, then the first inch or so on each side will go pretty easily. Strike the top of the slab repeatedly with a sledge hammer about a 1 foot away from the corner (where the pickaxe is wedged). # 6. 5. Use the jack hammer on the top and the risers. The best size drill bit for drilling into a 1/2 inch concrete anchor is a carbide-tipped bit that meets ANSI Standards B212. A concrete foundation removal generally costs $1,000 - $5,000. The national average for concrete demolition and removal is $1,038, or between $2 and $6 per square foot, according to HomeAdvisor. If your drill has only one speed . Put 6 inches of of 3/4 crushed gravel in the bottom of the hole before adding the posts. Step 2: Slope Pipe According to Code. Many hammer drills offer only two speeds, so turn your drill on at the slower speed for best control when making the guide hole. Cut the head off the bolt. Cut off the bolt head, when none of the other methods work. . Use the saw to make a line in the concrete that will serve as a weak spot easily broken apart by the sledgehammer. Next use a large sledgehammer to break up the foundation. You might be able to pick up a circular saw and blade for not a whole lot more than the rental fee. It is set in concrete. How to remove 2 inches of concrete? How to remove 2 inches of concrete? Rent a jack-hammer or buy a 4-inch dry-cut diamond blade for a circular saw. Cement is a substance that is used to bind materials, such as aggregate, by adhering to said materials, then hardening over time. Fill the gap with backer rod until it is . The concrete slab will begin to break apart as you strike it with the sledge hammer and your helper continues apply more and more upward pressure from underneath. Standard Wetbase Installation Concrete Floor. The new phase of the project was initiated by removing cracked panels existing in the 2-inch thick PCC sections and replacing them with three inches of PCC. Actual costs will depend on job size, conditions, and options. Then, make sure you've marked the exact location you need to drill. CCTV inspection and high-pressure jet blasting. When waiting for concrete to dry, keep these timeframes in mind: 24 to 48 hours - after inital set, forms can be removed and people can walk on the surface. Score the length of the cut three or four times with the chisel. You can mix with a garden hoe and a tub or wheelbarrow. It would make concrete if there was any moisture in the clay soils. - You can remove 2 inches of concrete with a hammer. Remove the baseboards to expose tile edges and avoid baseboard damage. Press strips of backer rod into the gap and force them down with a putty knife or thin scrap of wood. And that is a conservative guess. The grinder with the wheel was surprisingly comfortable to manage. After that, you should arrange for a cleanout with a high-pressure jet blaster. To break off large pieces, make a series of blows in a line to create a stress crack, then strike in the middle of the area you want to remove to break the concrete along the line. I anticipated the concrete to be about 24" deep. The thinnest that is usually used when pouring concrete, in general, is about 2 to 2 inches. Raised Floor Systems Explained Spectra Contract Flooring. Moreover, check out the ranges for different types of glues or mastic removal: A thin layer of epoxy paint, VCT glue, or mastic: $1 to $1.2 per square foot. . Have the tiles laid with a gradual slope down toward the room with the wood floor; the floor won't be level, spilled water in the kitchen will head straight toward the wood floor, kitchen island will need to be shimmed to make it level. If it smells, it's probably something organic that is now decomposing, like milk does. Improve this question. Use the hammer and chisel to remove the "core" left in the hole by the diamond hole-saw from both sides of the wall. Make a 2 inch cut in the concrete steps foundation by using a saw. The amount you pay depends largely on thickness, size, and if the old concrete being demolished was reinforced with wire mesh or steel bars. Place a bubble level on the extension pipe. . The project extension (TR 432) will provide an increased understanding of slab bonding conditions over a longer period, as well as knowledge regarding the behavior of the newly . I believe that he means to use the flat chisel and chisel along the surface of the floor to peel the raised portion off as opposed to chiseling downward into the floor. If you do it yourself, the cost to remove a concrete driveway will run you about $400, including rental and disposal. Concrete curing can take seven days to reach 70% of its strength. Also, if the driveway was completed with reinforced concrete, it's more difficult to remove and the cost to remove it will likely go up. You can remove 2 inches of concrete with a hammer. Pouring over the old concrete instead of having to demo and remove it, ended up saving the customer hundreds of dollars. Move the rasp or file in a back and forth motion along the surface of the concrete, applying downward pressure. On the other hand, if you're hiring a contractor to pour new . Dispense equal parts of the resin and hardener in a disposable container and mix until uniform (approx. A digging bar may also work if you find concrete (also soft stone, impossibly dense clay, roots) in the ground as you install a fence or mailbox. May not last, but worth a try. Pro tip: Cover and turn off individual AC units . For a basic project in zip code 47474 with 120 square feet, the cost to Remove a Concrete Slab starts at $10.70 - $13.03 per square foot*. 01-19-05, 11:56 AM. 7 days - after partial curing, traffic from vehicles and equipment is okay. Steps to Drill A 2 Inch Hole in Concrete Drilling a smooth two-inch hole in concrete is easier than you think. but i suspect it'll either be by (a) using a large surface grinder designed for the job to remove the unwanted 33+mm, or (b) cutting numerous slots the required depth using an 'ordinary' angle grinder and then power-chiselling out each line of mortar in between, or (c) literally pneumatic-drilling/jack-hammering out the whole bludy lot and Step 2. You can use the chisel to chip away the remaining . Once the blade is the right depth, tuck your finger under the shoe with your index finger to hold it steady and tighten the blade lever. Cut the foam backer rod to length with scissors. Post navigation. In this video we break up a concrete slab using a Hilti breaker, which was hired from HSS. Sleeve Anchors: Drill the hole twice the length of the sleeve anchor being used. Clean the old concrete First - pressure wash it, vacuum it, remove any dirt, debris, or loose concrete. Concrete is porous; something liquid has gotten in to your concrete andn settled there. It c. Start to break the concrete, starting six inches from the edge and working your way in. You can remove 2 inches of concrete with Read more Using a digging bar to break up concrete. 4 12 = .33.