Identify Permeable Base and Sub-Base Layers

What happens here

The video provides a brief glimpse underneath the paver surface, revealing the deeper components of the permeable system. Observe the substantial layers of coarse, open-graded aggregate (crushed stone) that form the base and sub-base. These layers are intentionally porous, lacking fine particles, to maximize void space for water storage and slow infiltration. The presenter mentions that water goes "straight through the base and into the ecosystem," which implies these layers are designed not only to hold water temporarily but also to facilitate its slow infiltration into the native soil below, recharging groundwater and reducing stormwater runoff, a key environmental benefit of stone paver installation.

Goal: Examine the subsurface structure shown in the video, revealing the deep aggregate layers designed to store and infiltrate water.