I want to build a three-foot-high retaining wall behind my house out of pressure-treated wood. Thoughts?—Shawn B., Sioux City, Iowa Go ahead, but do your homework. First, call 811 before you dig ...

A 3- or 4-foot-high retaining wall can have tipping forces measured in the hundreds of pounds and sometimes higher than 1,000 pounds if the ground above the wall is sloping up away from the wall.

You can watch the ETH HEAP put all its onboard tech to work building a 215 foot long, 20 foot high retaining wall all on its own in the video, below. Autonomous excavator constructs dry stone wall.

High water, erosion cause retaining wall along Manistee Riverwalk to ... Plans also include elevating and reconstructing the 500-foot section of the river walk and repairing the retaining wall.

Here’s how I’d go about adding another 30 or 40 years of useful life to your retaining wall for about $100 worth of material. It’s a pretty simple two-day job for two people.

It was a 50-foot-long wall that started out 1 foot high but ended up 42 inches high. I built it in front of another retaining wall and there was just 3 feet of dirt behind the wall, not a hill ...