BarrierLorR

Last updated: 2021-02-12

Single-faced, right or left facing barrier with optional gutter section.

The gutter and barrier links are inserted based on the Input parameters and Dimension A – Dimension G. All dimensions must be positive, non-zero values. The gutter slope is applied in a downward direction to a distance equal to Gutter Width / 2 and then applied in an upward direction an equal distance.

If a non-zero Depth to Subgrade is given, the subgrade surface is inserted to the back of the barrier, and continues for the Subgrade width to subgrade shoulder point. From subgrade shoulder point, subgrade extends vertically to attachment point elevation. Top of Base1 link extends horizontally from subgrade link to the back of barrier at the attachment point elevation. Other Base course links and the subgrade follow the superelevation slope as defined in Subgrade SE Method and Fixed Subgrade Slope.

The subgrade slope either from Fixed Subgrade Slope or alignment superelvation will be applied according to Side parameter, that is, if subgrade slope is 2%, Side is set to Right, you will see left side base/subbase lower than right side.

If Side is set to Left and subgrade slope is 2%, you will see left side base/subbase higher than right side.

The slope of the subgrade surface can be specified by setting a parameter reference to use the Subgrade slope of an adjacent lane. All base course surfaces can also be set to use the depths of base course surfaces of adjacent lanes by setting a parameter reference as well.

The attachment point is at the flange point of the gutter.

In layout mode the subassembly displays the barrier components based on the Input parameters given. The subgrade and other base course layers are inserted at a slope of -2%.

Info: All dimensions are in feet unless otherwise noted.  All slopes are in run-over-rise form (for example 4:1) unless indicated as a percent slope with a "%" sign.

Parameter Description Type Default
Side Indicates which side the subassembly is inserted towards Left/Right Right
Footing Depth Specifies the depth of the footing for the barrier. Numeric 0.0 ft.
Gutter Width Width of the Gutter. If width is set to 0.0, no gutter is inserted. Numeric 2.0 ft.
Gutter Slope Specifies slope of the gutter portion inserted before the barrier. Slope 12.5%
Base Depth Distance to the bottom of the first base course layer. This measurement is taken from the flange point. If there is no base course layer, a zero depth should be used Numeric 0.0 ft.
Subbase Depth Distance to the bottom of the second base course layer. This measurement is taken from the flange point. If there is no second base course layer, a zero depth should be used. Numeric 0.0 ft.
Depth to Subgrade Depth to top of the subgrade surface. Measured from the flange point down. Use zero if no subbase. Numeric, positive 2.0 ft.
Subgrade Width Distance the subgrade is extended beyond the back-of-curb. Use zero to terminate the subbase at the back-of-curb. Numeric, non-negative 2.0 ft.
Subgrade SE Method

Selects whether to use the superelevation slope for the subgrade surface or to set a numeric % slope value.

if Use Inside Lane SE is set, and Side parameter is left, this Subassembly will use left side superelevation defined in baseline. If Side parameter is set to Right, the right side SE will be used.

Selection List: a.) Use Inside Lane SE, b.) Use Outside Lane SE, c.) Fixed Slope, d) Use the Opposite Side Outside Lane SE Multiplied by -1.0,

e.) Use the Opposite Side Inside Lane SE Multiplied by -1.0

 Fixed Slope
Fixed Subgrade Slope

Default cross slope of the subgrade surface left of the baseline. This value is used if superelevation slope is not used, or is not specified for the baseline alignment. User also has the option to set a parameter reference and use the Subgrade Slope of an adjacent lane to define the subgrade slopes of the shoulder

Slope

 -2%
Left or Right Face

Specifies the direction of the barrier face.

Left / Right

 Left
Origin

Specifies whether the subassembly will be inserted starting from its left or right side.

Left / Right

 Left
Dimension A

Depth of the gutter at the flange point.

Numeric, positive,

non-zero

 6 in
Dimension B

Width from the back of curb to the break point on the face.

Numeric, positive,

non-zero

 7 in
Dimension C

Depth from the top of the front vertical face to the top of the front sloped surface

Numeric, positive,

non-zero

 10 in
Dimension D

Height of barrier face from top of sloped surface to top of barrier face.

Numeric, positive,

non-zero

 19 in
Dimension E

Width from break point at front of barrier to back of barrier.

Numeric, positive,

non-zero

 10 in
Dimension F

Width of the top-of-barrier, measured from the back of the barrier forward.

Numeric, positive,

non-zero

 6 in
Dimension H

Height of the curb portion of the Barrier; measured from top of the back of gutter, or attachment point if there is no gutter

Numeric, positive,

non-zero

 3 in

None

None

Point/Link/Shape Codes Description
P1 Flange Flange point of the gutter
P2 Flowline Gutter Gutter flowline point
P3 Barrier Flange  
P4-P7, P19 Barrier  
P8 Back Footing  
P9 ETW_Pave1_Bar  
P10 ETW_Base1_Bar  
P11 ETW_Base2_Bar  
P12

ETW_Sub_Bar, SGSP

 
P13, P14

Footing

Bottom of Footing under Barrier
P15

In_Pave1

 
P16

In_Base1

 
P17

In_Base2

 
P18

In-Sub

 
L1, L2

Top, Curb

Finish grade on the curb and gutter
L5-L8, L18

Top, Barrier

Finished grade on the Barrier
L17

Barrier

 
L10

Pave1, Top

 
L11

Datum, Subbase, SUBG

 
L12, L16, L9

Barrier, Footing

 
L13

Base1

 
L14

Base2

 
L15

Datum, Subbase, SUBG

 
S1

Base1

 
S2

Base2

 
S3

Subbase

 
S4

Barrier

 
S5

Curb