Exhibit 1 - Barrier Wall Detail.pdf
PDF 85 KB Posted
- Solicitation number
- RFP 591 260000002459 1
- Issued by
- Michigan
About this file
This is a technical specification exhibit from the Michigan Department of Transportation (MDOT) detailing concrete barrier wall repair procedures for an as-needed barrier wall repair contract in the MDOT Metro Region. The document provides detailed specifications for limited repair work on existing concrete barrier walls, including single-face and double-face barrier configurations. The repair scope encompasses structural reinforcement through the installation of dowel bars—both horizontal and vertical—that are to be adhesive anchored into existing concrete. Horizontal dowel bars, constructed of Grade 40 epoxy-coated reinforcement steel, shall be placed every 3 feet along the repair section with a minimum of 3 inches above the concrete cover, while vertical dowels are positioned starting 12 inches from the end of the repair section. All dowel bars require 9-inch embedment depth with 6-inch repair limits on both sides of weakness joints in existing concrete barriers.
The specification establishes that all repair work, including dowel installation and concrete patching, shall be incorporated into designated pay items for both "Double Face Barrier Wall, Limited Repair, Inclusive" and "Single Face Barrier Wall, Limited Repair, Inclusive" work categories. The proposed barrier wall dimensions, tapers, and configuration must precisely match the existing barrier plane to maintain structural continuity and aesthetic uniformity. The technical drawing provided indicates standard barrier wall cross-sections with saw-cut limits and reinforcement placement requirements to ensure proper load distribution and long-term durability of the repaired sections.
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Other files
| File | Type | Posted |
|---|---|---|
| Schedule B - Pricing.xlsx | XLSX spreadsheet | |
| Attachment 3 - Prevailing Wage Info & Rates - Wayne County.pdf | ||
| Attachment 2 - Prevailing Wage Info & Rates - Oakland County.pdf | ||
| Schedule C - Equipment List.docx | DOCX document | |
| RFP 260000002459 Barrier Wall Repair - Metro Region.docx | DOCX document | |
| Attachment 1 - Prevailing Wage Info & Rates - Macomb County.pdf |
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Text version
SHEET
OF
NOT TO SCALE
1 1
MICHIGAN DEPARTMENT OF TRANSPORTATION
CONCRETE BARRIER
BARRIER WALL DETAIL
CONCRETE BARRIER, SINGLE FACE
SAW CUT LIMIT
DOWEL BAR, 18 INCH
(2) HORIZONTAL #4
SAW CUT LIMIT
DOWEL BAR, 18 INCH
(2) HORIZONTAL #4
DOWEL BAR, 18 INCH
VERTICAL #4
DOWEL BAR, 18 INCH
VERTICAL #4
SHOULDER/VG
TOP OF CONCRETE
SHOULDER/VG
TOP OF CONCRETE
R E P
A
IR
L
IM
IT
R E P
A
IR
L
IM
IT
INCLUSIVE."
AND "SINGLE FACE BARRIER WALL, LIMITED REPAIR,
FACE BARRIER WALL, LIMITED REPAIR, INCLUSIVE"
WORK SHALL BE INCLUDED IN PAY ITEMS "DOUBLE
ADHESIVE ANCHORED INTO EXISTING CONCRETE.
ALL DOWEL BARS SHALL BE EMBEDDED 9" AND
FACE BARRIER WALL, LIMITED REPAIR, INCLUSIVE."
WALL, LIMITED REPAIR, INCLUSIVE" AND "SINGLE
INCLUDED IN PAY ITEMS "DOUBLE FACE BARRIER
SAW CUT LIMITS. HORIZONTAL DOWELS ARE
ARE TO BE PLACED MINIMUM OF 3" ABOVE THE
3" CONCRETE COVER. HORIZONTAL DOWEL BARS
HORIZONTAL DOWEL BARS SHALL HAVE MINIMUM OF
BARRIER WALL, LIMITED REPAIR, INCLUSIVE."
LIMITED REPAIR, INCLUSIVE" AND "SINGLE FACE
IN PAY ITEMS "DOUBLE FACE BARRIER WALL,
BARRIER WALL. VERTICAL DOWELS ARE INCLUDED
SHALL BE PLACED EVERY 3'-0" ALONG THE
END OF THE REPAIR SECTION. DOWEL PLACEMENT
VERTICAL DOWEL BARS SHALL START 12" FROM
AND EPOXY COATED.
REINFORCEMENT STEEL SHALL BE GRADE 40 STEEL
REPAIR LIMIT IS UP TO 18 INCHES, AS SHOWN.
WEAKNESS JOINTS IN EXISTING CONCRETE BARRIER.
EXISTING BARRIER WALL. MATCH PLANE OF
DIMENSIONS, TAPERS AND CONFIGURATION OF
THE PROPOSED BARRIER WALL SHALL MATCH
NOTES:
EXHIBIT 1 - Barrier Wall Detail
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