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Stesso

Core-filling and Backfilling the Retaining Wall

6:18
16:09
131.7K views

At 6:18 in

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What happens here

After the initial block layers are set, core-filling and backfilling are essential for the structural integrity of the retaining wall. The hollow cavities of the Keystone compact units are filled with crushed rock (Class 5 gravel) for stability. This is done by dropping large quantities of gravel into the excavated area with a skid steer, and then manually shoveling the gravel into the block cavities and behind the wall. A tamper is used to compact the backfill material behind the wall, ensuring density and preventing future settling. These blocks are then laid out for the next tiers.

Goal: Reinforce the retaining wall with core-fill and backfill for structural stability.

Tools and materials

  • Shovel — Manually filling block cavities and spreading backfill
  • Skid-Steer Caterpillar — Transporting and dropping large quantities of gravel for core-filling and backfilling
  • Tamper — Compacting the backfill material to ensure density
  • Work Gloves — Hand protection
  • Crushed Rock — Filling block cavities and providing drainage and stability as backfill

What they say

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the project step now somewhere you just fill that up as a level it with class five and base one on top of it one more project yeah we've got a lot going on back here that's for fear these are the Keystone compact units which are actually a better block but the problem with these particular units is they're no longer manufactured so finding this block to match up to is going to be a challenge that we're going to run into a little bit later on in this video now these blocks unlike the ones we typically use need to be core field and backfilled as well what you're seeing these guys doing it this step is the back filling they will core fill later on

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