How Do You Build A Pressure Treated Retaining Wall?
Pressure treated wood comes in many dimensions and because it is chemically infused with Chromium Copper Arsenate (CCA) or Alkaline Copper (ACQ) while under pressure, it resists damage from water and boring insects. Although it reduces the likelihood of damage, pressure treated lumber will eventually succumb to water, rotting and insects, although much slower than it would have if left untreated. Pressure treated wood should only be used for low retaining walls and limited to areas that have good drainage. Since wood does not bear an equal amount of pressure, per square inch as does concrete or other masonry, opt for a stronger material if your wall will be higher than 2-feet. Begin by determining the location and the desired height of the retaining wall. Although you will have 2 feet or less above ground, beneath the ground the support timbers will extend at least three feet down in order to support the force on the retaining wall from the soil. Dig the holes for the support posts no
