Backfilling and Compacting Buried Courses

8:45

14:47

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At 8:45 in

Turning a Hill into a Flat(er) backyard pt/2

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What happens here

With the initial courses of the retaining wall laid, the area behind them is backfilled with excavated soil using the skid steer. Blaine operates the skid steer, carefully dumping the soil into the trench behind the blocks. Sam then spreads the soil with a shovel and compacts it thoroughly using a Wacker Neuson plate compactor. A string line serves as a guide for the height of the backfill. It is crucial to maintain a safe distance with the plate compactor from the freshly laid blocks to prevent dislodging them. Any areas too close to the wall or in tight corners are compacted manually with a hand tamper or other tools. This process builds up the soil behind the buried portion of the wall.

Goal: Stabilize the lower courses of the retaining wall by backfilling and compacting soil.

Tools and materials

Hand Tamper — Manually compacting soil in tight areas or close to the wall blocks
Shovels — Spreading and leveling the backfill soil
String Line — Guiding the height of the backfill layers
Excavated Soil N/A — Backfilling the buried courses of the retaining wall

What they say

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[Music] we've been getting heavy rains every few days so they didn't want to break the trench open all at once but now they're on to the next phase of the project and they need to be very careful as they dig out that bank so they don't knock anything over into their retaining wall blaine shaves down the ground and smooths out his work song [Music] he uses the edge of the bucket to shave through the roots as well all right so we got our string line up we need to be a foot down from the string wing for the rocks and the caps we need to be six inches in front of it for a rock and we need to be 18 inches behind for rocks so that's what i was marking by marking out both the front and back of the trench sam make sure that blaine knows exactly where to take [Music] he carefully uses the skid loader to scratch out the footing he doesn't want to go too deep if he does then he's going to end up putting material back in and placing it and packing it which is just an extra step what he can't do with the machine he touches up the edges by hand we always use six inches of rock for base the only time we deviate from this plant is if we're building a wall in a swamp and we've got a soil correct the base then we'll go one to two feet thick and put geogrid in it

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