View Full Version : Rip Rap Figuring

06-02-2011, 06:36 PM
I've done some riprap in the past for myself, but never for hire. I've got two small ditches with washout problems that need to be addressed. Also a relative wants to do their share of shoreline along a pond. What can I use for calculation purposes, and does anyone have any suggestions. The inlaw mentioned 5" rock for their shore line of 100'. Thanks

Diamond Dave
06-02-2011, 09:08 PM
I have been pretty close figuring that one ton of 4-6" Rip Rap covers about 60 square feet.

06-02-2011, 10:26 PM
I figure it at 40 sq. ft./ton. It will usually cover more, but that's putting it on thick and I know I'll have plenty.

06-03-2011, 06:48 AM
What about shelving along the pondbank? Homeowner mentioned a foot shelf. What's the standard practice?
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06-03-2011, 08:04 PM
Shelf it. If not the rip rap slides down over time, and alot of it you place will roll down to the bottom if not. I use what is called 50lb rip rap, the biggest is about 5 inches. Kinkaid stone makes this stuff and everyone seems to love it because its a little smaller than most.

06-03-2011, 10:01 PM
Wanabe where do you live in Southern Illinois? I am getting a tandem load of the 50 lbs from Kinkaid stone next week for a ditch job at my house.