The first step is to determine the size or section of the retaining wall by linear foot. This will figure in to the estimate of materials needed later. Mark off the region with a string line and allow for extra room on the sides of the retaining wall blocks for a good gravel base.
Estimate the materials needed, chose desired retaining wall blocks, the size you choose will determine the amount needed, for example: if 12 inch blocks are employed the quantity times the linear foot needed is obvious. If 8 or 16 inch blocks are employed, convert total linear distance had a need to inches and divide by 8 for an eight inch block. Estimate base material -gravel(3/4 " quarry process) at under retaining wall, use 4-6 inch gravel base, more if retaining wall is higher in proportions.
Preparing for an excellent retaining wall base is essential and will be probably the most frustrating process. Excavate by shovel or loader if available, use local digging laws to ensure to avoid any buried cable. When possible work with a landscape fabric under gravel for better support and protect base from soil. Some areas may necessitate a deeper base (6 or even more inches) because of poor soil or recent disturbed soil from new house construction. Next - obtain the gravel base in by wheelbarrow, shovel, loader, and rake it out to approximate level.
Grade the retaining wall base with a rake and 2X4 to get an even base where in fact the wall will undoubtedly be placed. The string line ought to be in place with an effective level set and the direction of the wall. When the base is ready and compacted to the correct string level, all you have to to do is line the trunk flat side of the retaining wall blocks with the string and keep on placing blocks. When installing string line, keep in mind that the first coarse of blocks ought to be 3/4 buried once and for all support of the complete wall.
https://dhallwalling.uk/best-dry-stone-walling-yorskhire/ with a plate compactor or like compaction device to acquire a good solid base for the wall. If the gravel is too dry, wet it down some with a garden hose to make it pack better. Grade additional times after every compaction until complete.
Lay the retaining wall blocks along the string line before first layer is complete, be sure you have this first coarse secured well, some bury the initial layer almost completely or 3/4 buried so the base is strong. When layer 1 is done, the next coarse is simpler, up to the height you would like to make it. Use a landscape block adhesive between each coarse for extra strength.
Some retaining wall blocks might need to be cut to finish or match nicely to a foundation or other structure. Work with a diamond blade chop saw to get a nice cut. measure block in place and cut on your marked line. Retaining wall caps are a good option to utilize, they add a better appearance and will not allow weeds to cultivate between the joints on top of a wall. (depends upon kind of block used) secure with a landscape block adhesive for added strength.
Finish the retaining wall with the addition of or back fill any more base material or black dirt in the front or behind the wall, seed grass if needed. If retaining wall is situated in an area that water drainage is really a concern, use a drain tile pipe across the back base of the wall and use rock or water friendly material for drainage purposes. Utilize this on the trunk of the retaining wall before black dirt or other soil is added.
Tip: Use Landscape Block Adhesive between each coarse of blocks, run a bead of caulk across the blocks, this will make the wall stronger and moisture will not leak through the blocks, they'll be sealed.