Curved walls are
actually easier to build and faster to build than a 90-degree corner and/or a
mitered angle. In addition, they are
typically more economical to build and in fact are preferred and recommended
when a change of direction is required with your Allan Block retaining
wall.
How do I start a curved retaining
wall?
First, we always
suggest laying out your wall with a garden hose or something flexible to allow
for curves – spray paint may also be a choice for the creation of your
outline. The radius may be easiest to
create by using a string line that is a length equivalent to your radius and a
stake as shown here.
Once the desired shape is achieved, the type of curve will dictate how you begin installing it. There are two types of curves – an inside or outside curve.
From the point of where the curve will
start, measure straight back from the wall the required distance and drive a
stake into the ground. This will be the center of the curve. Attach your string
line to the stake and rotate it around to mark the location of the base course.
Install the blocks with the front of the blocks lining up with the marks. Using
these tips and tools will allow you to ensure the finished shape is what you are
anticipating.
When building an
inside curve, simply lay the Allan Block units out on the intended radius to
meet the look or need of your site. When
building an outside curve, the rear wings will need to be removed for proper
placement of the block on your desired radius.
Before installing
the base row of blocks on your intended radius check out our basic install steps to ensure proper
installation.
Keep in mind the
minimum radius at the top of your Allan Block retaining wall is dictated by the
width of the wall unit. An AB Classic
unit will allow for a 4 ft. 11 in. (1.5 m) radius and a AB Jumbo Junior unit
will allow for a 3 ft. 5 in. (1 m) radius on a 3ft. (0.9 m) high wall– check
out the AB Radius Charts and additional radius information at allanblock.com
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