Marie for the construction of a retaining wall in her backyard ... which meant the homeowner would have to pay for an engineering report and obtain a permit from the Sault Ste.

It details the steps of building bridges and retaining walls, including the preparation ... The film emphasizes the engineering marvels of the 20th century, particularly the Columbia River Highway ...

However, they require precise engineering and construction practices, including substantial concrete footings below frost depth, to ensure durability and performance. Embedded retaining walls, such as ...