Aetnaâs standard HMO plans cover surgical dressings when they are medically necessary for wound debridement or for the treatment of a wound caused by, or treated by, a surgical procedure. Please check benefit plan descriptions.
The only drawback to this type of retaining wall is the lack of lateral strength it has. If too much water or extra pressure is exerted on the wall, it could fail in spots. Expect to pay between $15 and $30 per square foot of wall, depending on the style and strength of block you choose.
Concrete Retaining Wall Blocks. We sell large retaining wall/barricade blocks for use in containment applications where function is more important than esthetics. Block dimensions are 2â² x 2â² x 6â², with a weight of approximately 3400 pounds.