RingingRock_MaterialTestPits_1.pdf
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- Attached to
- GAOA RINGING ROCKS ROAD RENOVATION Federal contract opportunity
- Solicitation number
- 140L3625R0003
About this file
This is a materials test pit report prepared by BLM in December 2024 documenting the results of excavation testing for the Ringing Rock Road renovation project. The report includes photos and findings from two test pits and a road cut slope excavation.
Test pit one at station 20+15 reached 3 feet depth in 20 minutes, with material being fractured and consisting of 4-5 inch minus rocks. The white coloring indicated fractured material suitable for excavation without blasting. Test pit two at station 33+50 reached 5 feet depth in 15-20 minutes, with larger scattered rocks mixed with fine grain material. The road cut slope excavation at station 28+00 demonstrated that rock outcrops could be easily excavated. All testing utilized a CAT 305 Mini Excavator and confirmed that standard heavy equipment would be sufficient for the project excavation work, with no blasting required. The excavated material from test pit one will serve as primary fill material for stations 3+50-6+00.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| RingingRock_FP14-Supplemental_Specifications_1.pdf | ||
| RingingRock_PLANS_1.pdf |
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Text version
Ringing Rock Road Materials Test pits Prepared by Kathie Marks December 2024
In November 2024 BLM dug two test pits and dug on the road cut slope of the realignment segment to determine materials for constructing the new alignment. BLM was trying to determine the extent of rock and dig effort in the largest areas of cut for project. BLM used a 305 Mini Excavator.
All excavation for the project is anticipated to be fractured and able to be dug with standard heavy equipment that would be necessary for this project.
BLM Excavator:
December 2024 Test pit one approximate station 20+15. Design cut depth approx. 8-10ft Digging was slow but material all was fractured and able to be dug. We were able to dig about 3 ft in 20min. Most material encountered was about 4-5 inch minus. Based on the experience of the Pipestone quarry manager Bart the slight white to the material means that that vein is all fractured and shouldn’t get into anything needing blasting. This excavated material is the primary fill material needed at Sta 3+50-6+00.
December 2024 Cut slope excavation approximate station 28+00 the road alignment stays primirily on the existng prism through this stretch but there are some culvert installs and turnouts. This rock outcrop was able to be easily dug and moved.
December 2024 Test pit two approximate station 33+50 at Control point 113. Design cut depth approx. 8ft This location is the primary cut material for the lower portion of the second switchback around Sta 35+40.
Although there was a fair amount of rock on the surface we were able to dig much easier than test pit one. The scattered rock was larger but mixed with mostly fine grain. Dug approximately 5 ft in 15-20 min.
File details come from the government source that posted it. Updated .