QA_06-04-2021.pdf
PDF 99 KB Posted
- Solicitation number
- 69056721B000007
About this file
This document contains answers to technical questions regarding Oregon Department of Transportation Solicitation Number 69056721B000007 for the OR DOT 20(3)/US 20 Upper Sunken Grade Slide Repair project. The questions and answers clarify specifications around unsuitable material excavation and placement, asphalt removal requirements, and whether wall excavation and backfill are incidental line items. One response indicates project details will be addressed in Amendment A002, with compaction testing also required. Removal of only material over 12 inches is specified, though unsuitable material must be hauled off. Asphalt thickness varies from 2 to 20 feet but may remain if deemed suitable base material.
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Other files
| File | Type | Posted |
|---|---|---|
| OR DOT 20(3).pdf | ||
| BidSum OR DOT 20(3).pdf | ||
| QA_06-04-2021_2.pdf | ||
| Amendment A002.pdf | ||
| Amendment A001.pdf | ||
| OR DOT 20(3)_XS_USG.pdf | ||
| OR DOT 20(3)_Earthwork_VolRpt_USG.PDF | ||
| OR DOT 20(3)_XS_LSG.pdf | ||
| OR DOT 20(3)_Earthwork_VolRpt_LSG.PDF | ||
| IFB OR DOT 20(3).pdf | ||
| OR_DOT_20(3)_Plans.pdf | ||
| OR DOT 20(3)_Compiled_ESCP_Final.pdf | ||
| DXF and XML files.zip | ZIP file | |
| OR DOT 20(3)_Survey_Control_USG.xlsx | XLSX spreadsheet | |
| OR_DOT_20(3)_SUP_USG.PDF | ||
| OR DOT 20(3)XS_DRAINAGE.PDF | ||
| OR DOT 20(3)_USG Final Geotech Report GR 22-20 Rev 2 signed.pdf | ||
| OR_DOT_20(3)_SUP_LSG.PDF | ||
| OR DOT 20(3)_Survey_Control_LSG.xlsx | XLSX spreadsheet |
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Text version
OR DOT 20(3)
US 20 Upper Sunken Grade Slide Repair
# General Technical Question Answer Date
1 X
If the material that is generated from the wall excavation (As shown on sheet F.6) is saturated or found to be unsuitable, is it allowed to be placed back in its original position for the wall backfill since it is out of the roadway prizm?
Unsuitable material is not allowed for embankment construction or structural backfill. See FP‐14 Subsections 204.10 and 208.03.
6/4/21
2 X
The Specs (204.13 (e)) read to only remove material larger than 12 inches but nothing about unsuitable material being hauled off. Will there be compaction testing requirements for this item as well?
This will be addressed under Amendment A002. Also see FP‐14 Subsection 204.14.
6/4/21
3 X
From years of continuous AC patching for the sinking roadway, there is a high probability that the roadway AC may be 2 to 10 feet thick.
(Locals say there may be as much as 20 feet of
ac) If this is the case, does the Federal Highway department view the ac as suitable materials as specified in section 101, therefore it can remain in place at the subrade. Or is it deemed unsuitable and all the asphalt needs to be removed and replaced?
See FP‐14 Subsection 203.04(b). 6/4/21
Check General or Technical
4 X
What item is the wall excavation and wall backfill (Structural Excavation/Structural Backfill) incidental to? There is approx 12,000 cubic yards and does not appear to be covered in the roadway excavation item.
This will be addressed under Amendment A002. Also see SCR Subsection 263.10, and FP‐14 Subsection 109.05.
6/4/21
File details come from the government source that posted it. Updated .