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Handy Tips: Make sure your block lips lock together.īackfill to the final wall height whilst being careful not to nudge any blocks out of alignment. Ensure the locking lips (at the back or top of the block) fit snugly together. Sweep the top of each course before laying the next to remove all foreign particles. Remember to backfill with drainage aggregate as you go, and compact it when 300mm deep. Simply add your subsequent block courses to a maximum height stated in the cross-sectional diagrams, which can be found in the block suppliers information brochures or engineering guide. Handy Tips: Use ag pipe with a protective sock on it. Outlet the drain through the wall at every low point, at every 20m of wall length, and around the ends of the wall to your storm water system. If required, place a 100mm drainage pipe behind the first course of blocks on the bed of drainage aggregate. Lay in the second block course then backfill immediately behind the wall with the drainage aggregate. With the first course in place, backfill behind the blocks with a minimum 300mm wide 10-20mm blue metal drainage aggregate to a level slightly lower than the block height.
HOW TO INSTALL LANDSCAPE EDGING BLOCKS CRACK
Handy Tips: Use a rubber mallet to tamp blocks into place – a metal hammer may crack them. Sweep the top of the first course before laying the second. Make sure the blocks are tightly side-butted together and true to the running edge of the finished wall. For curved walls, place the blocks against the required shape formed by a garden hose and marked out with spray paint. Place blocks side-by-side at the front of the levelled and compacted road base whilst using a string line along the back of the units for alignment. Handy Tips: Road base consists of 5% cement stabilised crushed rock.
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If using road base, level with a straight edge and compact to the required height by tamping with the rear face of a block or a mechanical whacker packer. Wall heights that are over 800mm high must use 20MPa concrete for the levelling pad. A levelling pad may consist of compacted material (5% cement stabilised crushed rock) for wall heights up to 800mm. Spread road base or pour concrete along the bottom of your trench.
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Handy Tips: Gloves make your spade user friendly Level and firmly compact the soil at the bottom of the trench. Refer to the cross-sectional diagrams for the specific levelling pad requirements per product. Handy Tips: Use brightly coloured string so you don’t trip over it.ĭig a foundation trench 300-600mm wide and 130-150mm deep to fit the levelling pad. It’s best to use a hose with the tap on and the spray nozzle off, as the water pressure will form a more uniform curve. For a curved wall set the shape by laying a garden hose on the ground, then mark the curve with spray paint. Installation Procedures – RETAINING WALLSįor straight walls use stakes and a string line.