Backfill and Compact Behind the Blocks

5:22

14:50

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At 5:22 in

Retaining walls- SPOTTING short cuts & BAD work

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What happens here

After the first courses of blocks are laid, the area behind the wall is backfilled with Class 5 aggregate. A worker uses a shovel and rake to evenly distribute the aggregate, while another worker uses a plate compactor to compact the backfill in layers (lifts). This process of laying blocks, backfilling, and compacting is repeated for subsequent courses. The narrator explains that workers 'tow' the wall in with the excavator to ensure tight alignment, but caution is needed not to walk or step on freshly laid blocks until they are fully settled and backed.

Goal: Provide stability and support to the laid blocks.

Tools and materials

Bobcat Mini-Excavator Bobcat — Assisting with moving blocks and backfilling
Kubota Skid Steer Kubota — Delivering Class 5 aggregate for backfilling
Plate Compactor Wacker Neuson — Compacting backfill material
Rake — Leveling backfill material
Shovel — Spreading Class 5 aggregate
Class 5 Aggregate N/A — Backfilling behind the retaining wall blocks

What they say

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another section then another section and another section and that's exactly what you don't want to see but if you're aware that that can happen as you're combining the sections together you just visually make sure that those different areas marry completely together and disappear and become one unit so right here zach and blaine are towing the wall in blaine carefully throws down a little bit of soil and then zach uses his feet and places that soil with a shovel and a rake and walks behind and in front of the block compacting it it doesn't take a whole lot of compaction but this is part of the process to lock that base course in and once we have the second course in place then we can start to actually step and walk on the wall but right now we gotta be careful not to touch it the next section i want to cover is basing the retaining wall and i think this is probably one of the most critical elements of building the retaining wall now you've got to get all of the right materials you've got to use those materials the right way but if you don't have someone that knows how to base it doesn't matter how good your materials are your retaining wall still not going to look good inside of our company we always have

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