In the summer months when the weather is warm and the dirt is compact, our Gravel Grading & Exacavating crew members are able to work on projects that are unaccessible during the rainy spring season. Jobs such as stream bank stabilization and waterway shaping are reserved for this time of year, so we don’t tear up the earth or get ourselves stuck in the mud.
In projects such as these, one of the materials we rely on to “support” our efforts is rip-rap.
What is rip rap?
Rip-rap is large boulders and concrete pieces that are placed along waterways, bridge foundations, and steep embankments to protect the underlying dirt from erosion and scour.
We frequently use this option because it is a natural-looking treatment that not only protects the earth, but it can be used for many different purposes by using various sizes and volumes of this material:
4-5” Rip Rap
The 4-5” size is the smallest type of stone available. This size is ideal for preventing soil erosion on small slopes and along drainage ditches that aren’t constantly exposed to moving water. This size is also utilized in weed prevention measures along steep embankments and sometimes as base material in driveways and parking lots.
6-9” Rip Rap
This size rip rap is the most commonly used size. These stones are perfect for erosion control and bank stabilization measures for streams, rivers, ponds, and other smaller bodies of water.
These pieces are ideal for shorelines with extremely heavy currents and breaking waters or in large holes and ditches. The large mass of these boulders can reinforce even the steepest grades and erosion-prone areas.
Where do we use it?
Rip rap is used where a structure or shoreline is continuously exposed to rushing water, such as along creeks that commonly experience flash flooding, along pond shorelines, and in field drainage areas that have steep grades. Over time the dirt in these structures is worn down and lost, which can dramatically change the lay of the land surrounding it. Our crew uses these stones to support the best measures and protect the property owners’ land.
Check out some of our other “What’s New” blog entries to check out the projects we’ve done that utilize rip rap, such as gabion baskets and stream bank stabilizations.
Very simply, gabion baskets are a great option for farmers or developers looking for erosion control on sidehills, stream/river banks, road developments, or residential landscaping. These structures help greatly reduce soil erosion on steep inclines or in areas susceptible to water flow.
To create a gabion basket, first the land needs to be graded properly to optimize desired flow of water. Then a tarp and large wire basket are set in place. The next and most labor-intensive step is the placing of the rock or rip-rap. This will help slow the flow of water, and therefore reduce the amount of dirt that is eroded. Rock size and depth vary depending on the degree of water control needed.
If a gabion basket is something you need on your land, give Gravel Grading & Excavating a call at 563-542-6610.
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