Backfilling and Upper Wall Demolition

What happens here

This phase involves two concurrent activities: backfilling the new retaining wall with drain rock and continuing the demolition of the old upper retaining wall. After the first courses of the new wall are laid, 3/4 inch clear drain rock is introduced behind the blocks. A skid steer (Cat skid steer) is used to dump the rock, with a worker using a shovel to mark precise drop points. Other workers then use shovels and rakes to evenly spread and compact the drain rock into the backfill area, ensuring stable drainage. Simultaneously, the Bobcat T325 mini excavator is deployed to carefully remove the remaining sections of the previously existing upper retaining wall. This removal is critical for establishing the new grade and preparing the site for the final landscaping. The removed old wall materials are collected by the skid steer for disposal. The presenter emphasizes the use of 3/4 inch clear angular rock due to its superior interlocking properties compared to Class 5, which prevents movement and provides excellent drainage. Safety equipment like work gloves and safety glasses are used during this process.

Goal: Stabilize the new wall with drain rock backfill and remove the remaining old upper wall sections.