What are the Wisconsin Temporary Precast Concrete Barrier 12’-6” Specifications?

Tips & Advice

The State of Wisconsin Department of Transportation outlines specifications regarding the proper dimensions for 12’-6” temporary precast concrete barriers, including general notes, end view specifications, section A-A and B-B details, elevation view specifications and plan view details.

Wisconsin Temporary Precast Concrete Barrier General Notes

Do not intermix concrete barrier temporary precast 12’-6” with other temporary concrete barriers.
Use ASTM A-615, Grade 60, deformed steel bars for bars 4A1, 6A2, 5B1 and 4C1 in the barrier section; and for 4V1, 4V2, 4V3, 4V4, 4V5, 4V6, 4F1, 4F2 and 5F3 in the barrier taper section.
Loop bars 6D1, 6D2 and 6D3 should be ¾” smooth steel bars with a minimum yield strength of 60 KSI, a tensile strength of not less than 1.25 times the yield strength, but a minimum of 80 KSI, a minimum 14% elongation in 8 inches and passing a 180 degree bend test using a 3-1/2” pin bend diameter for bend tests. The loops should be installed within 1/8” of the plan dimension.
Construct lifting slots as specified on the plans to facilitate the drainage of water after installation.
Place barrier on a paved surface. Remove all loose dirt and sand from the roadway surface prior to placing the barrier.
Install mechanical or adhesive anchors per manufacturer’s recommendations. Provide manufacturer’s information to project engineer.

Each barrier should include the following:

Mark one end of each barrier permanently by forming into the barrier the following information:

a. Type: WI CBTP

b. Manufacturer

c. Date manufactured (month and year)

1” chamfer to prevent spalling is optional
A 3/8” hole in the connection pin, at the location shown, is acceptable but not required.
“V” notch is optional
The 4” diameter 11 gague steel round mechanical tubing sleeve for lifting is optional
Never use loop bars to lift, move or reposition the barrier
Use delineators conforming to section 633 of the standard specifications. The contractor may use alternate shapes and housing. Install delineators according to manufacturing instructions. Install yellow reflectors when the barrier is located to the left of traffic and white reflectors when the barrier is located to the right of traffic. Space delineators at a maximum of 25 feet apart. Provide top mounted delineators in addition to the side mounted delineators on all barrier installations that are located on a curved alignment longer than 200 feet, as well as on barriers used to separate traffic.

Wisconsin Temporary Precast Concrete Barrier End View Specifications

From an end view, Wisconsin barrier panels should conform to the following:

Height: 2”-8”
Bottom width: 1’-10-1/2”
Top width: 8”
Height of the bottom slope: 7”
Height of the top slope: 1’-10”
Break point: 10” from the pavement or ground line
Vertical reveal: 3”
Symmetrical in nature
1” chamfer typical
An anchor bolt blockout on each side (anchor on traffic side only when required)

Wisconsin Temporary Precast Concrete Barrier Section A-A Specifications

From an end view, Wisconsin barrier panels should conform to the following:

Height of anchor bolt inside the panel: 6-1/2”
V notch optional
Distance between ground line and 2-5B1: 6-1/2”
Distance between top of anchor bolt and 2-4C1: 8”
Distance between 2-4C1 and 1-5B1: 1’-2-5/8”
Distance between 1-5B1 and top of panel: 2-7/8”
1-3/4” minimum CL between side of stirrup and side of panel
1” CL. To 62A bar

Wisconsin Temporary Precast Concrete Barrier Section B-B Specifications

From an end view, Wisconsin barrier panels should conform to the following:

V notch length: 7”
Distance between ground line and 2-5B1: 6-1/2”
Distance between 2-5B1 and 2-4C1: 8”
Distance between 2-4C1 and 1-5B1: 1’-2-5/8”
Distance between 1-5B1 and top of panel: 2-7/8”
2” minimum CL between top of stirrup and top of panel
1-3/4” minimum CL between side of stirrup and side of panel
62A anchor bolts
1” CL to 6A2 bar

Wisconsin Temporary Precast Concrete Barrier Elevation View Specifications

Wisconsin barriers should conform to the following dimensions and include the following features:

Length: 12’-6”
3-3/8” plus or minus 1/8” when measure from face of rail to outside edge of loop bar
6” between ground line and loop bar 6D3 (on the right side)
1’-5” between loop bar 6D3 and 6D2 (on the right side)
3” between loop bar 6D2 and 6D1 (on the right side)
6” between loop bar 6D1 and top of panel (on the right side)
4-1/2” between ground line and loop bar 6D1 (on the left side)
3” between loop bar 6D1 and 6D2 (on the left side)
1’-5” between loop bar 6D2 and 6D3 (on the left side)
7-1/2” between loop bar 6D3 and top of panel (on the left side)
An anchor bolt blockout in the center of the panel on both sides
Two lifting slots, each 1’-0” long, located 3’-0” from each end of the panel

Wisconsin Temporary Precast Concrete Barrier Plan View Specifications

Wisconsin barriers should conform to the following dimensions and include the following features, according to the plan view:

Length: 12’-6”
Width: 1”-10-1/2”
Three pairs of loop bars, spaced 4’-3” apart from each other, and 2’-0” from the end of the barrier

*Please note that this blog post is an interpretation of Wisconsin Department of Transportation's specifications. Please consult with Wisconsin DOT's most recent requirements for definitive information.

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