What are the Indiana Anchored Temporary Concrete Barrier Specifications?

The Indiana Department of Transportation outlines specifications regarding the proper dimensions for anchored temporary concrete barriers, including general notes, top view details, front view details, connection details and end view details.

Indiana Anchored Temporary Concrete Barrier Specifications General Notes

1. The dimensions of the lifting slots are subject to adjustment as necessary to accommodate handling equipment.

2. Maximum barrier taper rate flares for lane closures for legal posted speed are shown in Table No. 1 (below).

3. For additional connection details see Standard Drawing E 801-TCCB-0.

4. Where site conditions prohibit the use of these flare rates then flare rates may range from 10:1 to 6:1.

5. Section A-A shows reinforcement with welded wire fabric. The WWF may be bent to the shape of the wall.

6. Hex nut may be tack welded to bottom spacer to facilitate installation and removal. Bolts should be torqued only to tight condition. Clearance between the spacer and the ends of the barrier should allow angular deflection at the joints to allow flare rate 11:1 or flatter.

7. Top spacer TS should be 4" x 2" x 5/16" x 10" long.

8. Bottom spacer TS should be 4" x 2" x 5/16" x 1'-4" long.

9. Where necessary to meet short radius curving alignment, the shorter top spacer (10") may be substituted for the standard bottom spacer (16").

10. Where very short radius curving alignment is encountered, spacers may be TS 3" x 2" x 1/4" x the appropriate length as shown above.

11. In lieu of the connection detail shown, the J-J Hook temporary barrier connection of Easi-Set Industries as described in FHWA acceptance letter B-52 of March 26, 1999 may be used.

Indiana Anchored Temporary Concrete Barrier Top View Details
From a top view, panels should include:
• ¾” threaded inserts
• ¾” smooth bar hooks
• Typical or optional end treatments
• A width of 2’-0”
• 3-3/4” between the end of the typical end treatment and the side of the barrier
• Smooth bar hooks that are ¾” x 11’-8”

Indiana Anchored Temporary Concrete Barrier Front View Details

Indiana anchored temporary concrete barriers should conform to the following dimensions when viewed from the front:

• Length: 10’-0”

• Height: 2’-7”

• Two lifting holes at the bottom of each panel, set 3’-1/2” from each end of the barrier

• ¾” threaded inserts

• Two parallel bars inserted through the panel on an incline

• Distance between upper bar and the top of the panel on the left: 6”

• Distance between upper bar and the top of the panel on the right: 7-1/2”

• Distance between lower bar and the bottom of the panel on the left: 7-1/2”

• Distance between lower bar and the bottom of the panel on the right: 6”

Indiana Anchored Temporary Concrete Barrier Front View Connection Details

Indiana anchored temporary concrete barrier panels should connect using the following specifications:

• No more than 4-1/2” between panels

• Two spacers should be used to connect the panel bolts together

• Spacers should be 2” high and 4” wide. (See general notes for spacer length details).

• Spacers should include a 1-1/2” drilled hole in the center of the spacer.

• Each connector bolt should be 1-1/4” x 2’-2” with a 4” minimum, and should include a threat and hex head, plus two flat washers and a hex nut

• The smooth bar hooks should be ¾”

Indiana Anchored Temporary Concrete Barrier End View Details

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

• Height: 2”-7”

• Bottom width: 2’-0”

• Top width: 10”

• Bottom slope starts 9” from ground line

• Height of the bottom slope: 7”

• Height of the top slope: 1’-10”

• Break point: 9” from the pavement or ground line

• Vertical reveal: 2”

• Symmetrical in nature

• ½” bevel

Indiana Anchored Temporary Concrete Barrier Table No. 1

This blog post is an interpretation of specifications by the Indiana Department of Transportation. Please consult with Indiana DOT's most recent requirements for definitive information.

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