Pouring concrete on a steep slope?

[arh13p]

What is the best method to pour concrete on slopes up to a 2:1 that is reinforced. This appliation would be for a liquid tight lagoon. Some as large as an acre in size. The concrete is reinforced with steel for crack control. Has anyone heard of "glacial" pouring? I have done it and Contractors like it because you just let the concrete flow down the side slope while workers are striking it off and leveling it. it keeps labor costs down. What is your opinion of this method? Thanks.

 

[Ltwine]

Could be my ignorance.

 

[TDAA]

Riprap can be stone or rubbilized concrete. Concrete paving is slope armor.

 

[hokie66]

Yes, I think riprap is always discrete pieces of material, stone or concrete rubble.

http://en.wikipedia.org/wiki/Riprap

 

[PEinc]

I've always seen rip rap as individual stones, about 6" to much larger. On a few jobs, the rip rap was placed and then covered with thick grout.

http://www.PeirceEngineering.com

 

[Ltwine]

I think Drumchaser was covering the river bank riprap with reinforced concrete, which is quite common at bridge abutment - a perfect homeless shelter

 

[Drumchaser]

Some time ago all slopes under bridge abutments (and wrapped around to Apex of slope adjacent too) was almost exclusively placed as concrete as I have described above.

My feeble memory recalls that we have changed in this region to a greater percentage of projects utilizing the Stone Rip Rap because of aesthetics. I could be wrong.

The fact that it is harder to graffiti it up could be another reason.

I think in a cost comparison of the proximity of quarries, haul distance to project vs. the recent additional cost increases of ready-mix concrete may have made the Rock Rip Rap more affordable.

Again, I could be wrong.

My favorite Rip Rap (slope armoring next to waterway) was articulated block mat. Little pillows pumped full of grout that were made from a parachute type material all woven together. This was labor intensive, but it really looked nice when completed.

 

[hokie66]

Sounds like Fabriform mats by Intrusion Prepakt. Matter of opinion as to whether they look good. But I wouldn't call that method "riprap".

 

[Drumchaser]

Potato/potauto......I do not have a pic. of the A.B.M. ..but it is still in place over 20 years later....about 8 miles of it.