Build retaining walls (part 1)

To build a retaining wall step by step, you have to follow the instruction below:
👉Step 1: Pack and layer gravel base material
If you want a straight wall that won't shift and move over time, lay down a layer that uses a packed gravel base before placing the first layer. If you're constructing retaining walls taller than three feet, you'll certainly need a license and the services of a structural engineer to design the wall.
Add a gravel base as 2 inches layers, packing it down properly by using a hand tamper or plate compactor after every layer. Return and level it when you've built up at least six inches.
👉Step 2: Install the first row of blocks
Before placing the first row of blocks, use a hammer and mason's tool to take the lip of the blocks off in order to make them sit flat completely on the ground. For the first course of blocks installation, you will use a straight row with a taut string line. Set the first block in the lowest location of the trench and always check for levelness. Then, continue to lay the next blocks which will be even with the first one.
👉Step 3: Add rough gravel at the back of the first row
When the first row of blocks is in place and level and aligned, the following step is adding gravel for drainage behind the blocks. After the gravel is in place, lay some soil upfront in the first row to keep them in the appropriate position. Then, firmly pack the gravel and soil surrounding the blocks to secure them.
Here is some information for your reference, if you have any questions, please contact GREEN ARBOR LANDSCAPING (206) 265-2940 for advice.