Then, gently push the first block down into the mortar until it’s sitting about 3/8 of an inch (0.95 cm) above the top surface of the footer. Spread a layer of mortar about 1 inch (2.5 cm) thick inside the perimeter you just traced. Use a pencil to trace around the blocks on the concrete footer you poured, then set the blocks aside. When you’re ready to build the base of your wall, lay out the first layer of blocks end to end, and put 3/8-inch (0.95 cm) wooden spacers between each block. Let the concrete harden overnight before moving on to the next step. Next, pour a layer of wet concrete into the trench and smooth it out with a concrete float. Once you start laying the cinderblocks, you’ll also need to put a vertical piece of rebar inside every other hollow space in the blocks and reinforce the bars with coarse core-fill grout. Reinforce each corner of the trench with a piece of steel rebar, each bent at a 90° angle and about half the width of the trench. So, if your blocks are 7 inches (18 cm) long, make the trench 10 inches (25 cm) deep. The trench should be about as deep as the cinder blocks are long, plus an additional 3 inches (7.6 cm). Use a shovel to dig a trench inside the area you’ve marked off. Then, run a length of string between each of the stakes to mark off the perimeters of the footing. Once you’ve done this, drive 4 wooden stakes into the ground at each of the corners of the footing area. You’ll also need to decide how long you want the wall to be. So, if your wall is 16 inches (40 cm) wide, the footing area would be at least 32 inches (81 cm) wide all the way around the base of the wall. Next, calculate the footing area around the wall, which should be at least 2 times as wide as the wall itself. This means that if your blocks are 8 inches (20 cm) wide, the wall will be 16 inches (40 cm) wide. For example, if the wall will be 2 blocks wide, measure the width of a single block and multiply it by 2. If you are unsure of which product would be best and would like to discuss your project further, you can also book an appointment with one of your local experts.To build a cinderblock wall, start by determining how wide you want the wall to be. If you cannot find the item you require, please contact your local branch team, whose details can be found using our branch locator. Our leading manufacturers and suppliers hold a wide range of concrete blocks, including Tarmac, Thermalite, and Forterra ensuring high-quality products at competitive prices. The basic material needed for concrete blocks is cement and cement dye, aggregate, water, and additives or admixtures.įor structural and safety reasons, it is very important to choose the correct concrete block product for your end-use. Whether you’re looking for lightweight blocks, coursing blocks, aerated concrete blocks, dense concrete blocks, concrete trench blocks, hollow concrete blocks, or breezeblocks, you’ll find that we offer a block to meet your specification. Individual concrete block units can be made to larger custom sizes and shapes, ensuring a quick turnaround in the construction cycle, with fewer joints mortar consumption rate reduces, as compared to standard masonry construction, enhancing the overall strength of the building.Ĭoncrete blocks are ideal for mass housing and various civil engineering projects, some of the few applications where concrete blocks excel are outdoor seating, decorative screens, flower beds, many outdoor furniture and patio designs, the formation of material bins, building walls. Construction with a concrete block is more systematic, faster, and stronger, as compared to brick masonry due to the large size of blocks. The difference between a concrete block and a brick is that a brick is a solid or hollow manufactured masonry unit made of concrete, clay, or stone, comparable to a concrete block that comes in hollow or solid formats but is exponentially larger, made of concrete, and are used mainly in load-bearing walls where strength is key. Concrete blocks protect the interiors of a structure against noise pollution, provide better thermal insulation, gives added protection against fire, and cuts down on plaster usage as an economically viable alternative to conventional bricks. Concrete blocks also referred to as concrete masonry units (CMUs) or cinder blocks are rectangular-shaped blocks used within the construction of walls as a primary building material.
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