FAQs When Is A Retaining Wall Required
9 Types of Retaining wall and their properties (What is a retaining wall?) || civilogy Retaining Wall 101 For high resolution video, visit: When do you need a Guardrail at a Retaining Wall? Does your retaining wall project need a building permit? · is more than four (4) feet high, measured from the bottom of the footing to the top of the wall; OR, ...