To build smooth outside curves, remove one or both of the "wings" from the back of the blocks and tighten the radius of the curve. The cap stone is the last component added to the wall system. Most curves can be built with no cutting involved. Use a masonry saw to cut each cap. Capping Curves. Yes, you have to cut each of the caps to the radius of the wall. Lay out the primary geogrid around the curve butting front edges together. A.: Forming curved surfaces can be accomplished by using plywood, which can be bent to the desired radius. Contractor Resources | Dealer Login | Designer Resources | AB GO. Cut geogrid to required lengths per the approved plans. I would definately do a dry run first to see how each piece fits. Draw a line from the mark to the front corner. Then set in … Determine the size of the area by first staking it out and then connect the stakes with the string. If the radius of the curve becomes so tight that the angled edges of the blocks touch, you would have to cut the edges to a sharper angle to prevent gaps in the joints from showing. This prevents freezing conditions from causing the wall to freeze and break. Topper stones usually come in rectangular shapes, making them more difficult to install in curved retaining walls. Break wings off by tapping on the back of the wing to obtain a clean break. Measure the distance of the gap between the 2 caps (x) at the front of the wall. Draw a line from the mark to the front corner. It's a good idea to secure caps with a high strength construction adhesive once they are all cut. INSIDE CURVES Lay cap units side by side with the short side facing out. To transition the curve back into a straight wall or another curve, lay out the curve and the first couple blocks of the next section. Capping Tighter Curves. Building curved and serpentine retaining walls is simple. Cutting a block in half or using the half width blocks, will assist in creating a proper offset. A gap will appear in the front. Measure the distance of the gap between the 2 caps (x) at the front of the wall. If you enjoy geometry, you can cut each stone at an angle to curve along your wall. This video shows you how to add a cap to a retaining wall system. Here’s a quick look at the process. Use the radius chart to determine what the minimum recommended radius of the base course of the wall needs to be, so the top course of the wall will not be less than 1.2 m. From the point of where the curve will start, measure straight back from the wall the required amount (shown in the radius chart) and drive a stake into the ground. Building curved and serpentine retaining walls is simple. For cleaner lines, it may be necessary to remove parts of the bottom notch to fit the blocks closer together. When placing geogrid along curved retaining walls, the geogrid should follow the back of the lip on the retaining wall block. For and outside radius, place two caps on top of the wall, with the back of each cap tight together. Tamp the area down so that it is flat. The final height of the wall will determine what the minimum radius at the base course must be. Try to maintain an offset of the vertical seams by at least ¼ of the block length from the courses below. Place two caps on top of the wall, spaced so a third cap will fit tightly between their widest point. This will be the center of the curve. This video tutorial shows you how to add a cap to a retaining wall system. For cleaner lines, it may be necessary to remove parts of the bottom notch to fit the blocks closer together. Adding topper stones can pose some challenges. To properly create a brick retaining wall it needs to be nestled in a trench. How to cut stone caps expalins the steps for cutting paver stone caps. For a smooth curve with less cutting, use our half width blocks to help build the curve. NOTE: An AB Fieldstone 812 assembly is recommended for building curved retaining walls. We provide step-by-step instructions for capping a small concrete block retaining wall. From the point of where the curve will start, measure straight back from the wall the required amount (shown in the radius chart) and drive a stake into the ground. Cutting the bottom notch for tighter inside curves, Cutting the bottom notch for tighter outside curves. maybe even put a tick mark that crosses both the cap and wall so you know where the piece has to go once you mortar it. For the. (75 mm) layer of approved fill material. Lift the section of grid that overlaps and place the fill material to separate. The tightest or smallest radius at the top of any AB wall using full size block is 1.2 m, and 0.8 m using the half width blocks. The above steps work for both inside and outside radiuses. Allan Block's patented design allows for easy installation of both inside and outside curves. How to cut stone caps for a curved retaining wall [with photos] | Pretty Purple Door. Use a masonry saw to cut each cap. If you need to cut topper stones to fit the curve in your retaining wall, follow this trick: Lay stones #1 and #3 out in their pattern. To achieve this, additional layers need to be installed above the course where the geogrid is required to fill voids that are created. Break wings off by tapping on the back of the wing to obtain a clean break. To transition the curve back into a straight wall or another curve, lay out the curve and the first couple blocks of the next section. If the base is 4 feet then the width should be 12 feet. Set another cap on top of the first two caps in the center and mark where they overlap on the bottom of the center cap. More options for finishing your retaining wall. To achieve this, additional layers need to be installed above the course where the geogrid is required to fill voids that are created. Remove the cap, using the marks scribe the line shown in green and saw the block. Cut geogrid to required lengths per the approved plan. The above steps work for both inside and outside radiuses. For curved walls, the cap blocks will need to be trimmed along the sides so they can conform to the radius of the wall. Repeat this process as often as needed to cap the entire curve. For and outside radius, place two caps on top of the wall, with the back of each cap tight together. How To: Build a retaining wall with an outside radius curve ; How To: Building a landscape retaining wall in a weekend ; How To: Build a retaining wall with an inside 90 degree wall ; How To: Build and install a retaining wall with Lowe's ; How To: Build triple decker retaining walls for a garden Australia Patents: #2009201036, #2003204789, #785064 New Zealand Patents: #575515, #413355; #413721, #413722, #413723, #526518 International and Other Patents Pending. Install the blocks with the front of the blocks lining up with the mark. If the curves are mild, then use a mallet and chisel. The curve of the wall has a radius of 4 feet. Put on your work gloves and goggles. Mark the blocks or take note of the areas where there are voids in the grid placement. To build a flowing inside curve, butt the block end to end to match the smooth curve required on the project. The above steps work for both inside and outside radiuses. For a smooth curve with less cutting, use our half width blocks to help build the curve. More options for finishing your retaining wall. Keep the front of the blocks tight together. Use a saw to cut the caps. For a faster job that looks just as neat, try this approach: Step 1: At the beginning of your wall, place stones #1 and #3 in their places. Set another cap on top of the first two caps in the center and mark where they overlap on the bottom of the center cap. Place two caps on top of the wall, spaced so a third cap will fit tightly between their widest point, Mark the overlap on the bottom of the center cap, Measure the distance of the gap between the 2 caps (x) at the front of the wall. Refer to the Radius Chart to confirm that the AB product you are using will accommodate the desired wall radius. On inside curves, place the facing units to form the curve. It was totally worth the effort. Use a masonry saw to cut each cap. To transition the curve back into a straight wall or another curve, lay out the curve and the first couple blocks of the next section. {{gwi:286302}} Set the cap to be cut on top of the spacer so that it overlaps above the last block cut as shown below. ... Quick tip to save money: To cut the caps to fit the curves, rather than rent an expensive wet chop saw I used my cheap tabletop wet tile saw. Remove the center cap and cut along the marks. Adjusting 1 or 2 of the blocks will help in the transition of the next section of the retaining wall. Most cap stones are made to direct the water away from the top surface of the concrete wall. Try to keep spacing consistent between the backs of the blocks. Try to maintain an offset of the vertical seams by at least ¼ of the block length from the courses below. More options for finishing your retaining wall. Set the adjacent caps in place; Set the stone cap you need to cut on top so they overlap the adjacent caps. 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