I am in the process of incapsulating my crawl space. The space is 25'x25'x2' in depth. On 2 sides of the perimiter there is a trench 4' wide x 4' deep walk area along the inside face of the block fondation. There are signs of the dirt has cracks which looks like they could cave in. I want to level out the walk way and some how support the dirt walls falling outwards. I thought using at lease four banding ties anchoring into the block at both ends (this has me concern)and ratchiting until there tight. Any ones thoughts? And does this make any sence?