What are the Washington Terminal Single-Slope Concrete Barrier Specifications?
The Washington Department of Transportation outlines specifications regarding the proper dimensions for terminal single-slope concrete barriers, including general notes, plan view details, elevation details, section details and more.
Washington Terminal Single-Slope Concrete Barrier General Notes
The Washington Department of Transportation’s general instructions are as follows:
-
Permanent installation requirements: embed barrier 3” minimum in asphalt or concrete; embed barrier 10” minimum in compacted soil; install 3/8” premolded joint filler between segments; fill the connection blockout with grout, centering the rebar grid in the blockout before adding grout.
-
See Standard Plan C-70.10 for rebar grid details and barrier connection details.
-
The terminal is used only on the trailing end of a barrier, unless otherwise shown in the contract.
-
When the high performance concrete barrier is specified in the contract, use the dimensions given in the H/P row in the dimension table, with a minimum height above the roadway of 3’-6” and a minimum embedment of 3” in asphalt or concrete, or 10” minimum embedment in compacted soil.
Washington Terminal Single-Slope Concrete Barrier Specifications
Washington barriers should conform to the following specifications, according to the Washington Department of Transportation:
Plan View
Single slope concrete barriers should taper in the direction of incoming traffic. They include a 3/8” premolded joint filler for permanent installation. For dual faced details, see Standard Plan C-70.10.
Elevation View
Steel welded wire reinforcement deformed for concrete may be substituted for reinforcing steel in accordance with Standard Specification, Section 6-10.3.
From an elevation view, barriers are square on the right end and tapered from the top to the groundline on the left end. The tapered section of the barrier includes two lifting slots, which are each 2’-0” wide. The leftmost lifting slot is spaced 2’-0” from the tapered end (lowest end) of the barrier.
The left (tapered) end of the barrier has a vertical reveal of 3”. Barriers include a ¾” chamfer (typ.). They are embedded a minimum of 3” in asphalt or concrete and a minimum of 10” in soil, when measured from the groundline. The length of the tapered section is 8”-0”; the length of the flat section is 4’-0”.
Horizontal Bars
The number of horizontal bars required will change depending on the barrier height and whether the barrier is standard vs. H/P, as described in the chart below.
Sections A & B
See table above for barrier height details. Barriers have a 3” minimum embedment in asphalt or concrete and a 10” minimum embedment in soil. Barriers include a central v-notch at the bottom. The top width of the barrier is 8”, and the clearance between internal bars and the outside of the barrier is 1-1/2”.
This blog post is an interpretation of specifications by the Washington Department of Transportation. Please consult with Washington DOT's most recent requirements for definitive information.
BUY AND SELL WITH EIFFEL TRADING
Eiffel Trading’s helps customers sell their used and surplus barrier wall, including single slope barrier, f-shape barrier, low pro barrier, and more. Additionally, our construction material inventory also includes used sheet pile, used HDPE pipe, and much more.
All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.
Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.
If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.