o Standard Specification,
Transcript of o Standard Specification,
a:: w J: (.) 1-w ...J u.
1o ...J 0 (.)
~ EDGE OF SHOULDER/ FACE OF GUARDRAIL
TRAFFIC BARRIER (BEAM GUARDRAIL SHOWN)
5' - O" MIN. FOR BEAM GUARDRAIL 8' - O" MIN. FOR UNANCHORED TYPE F CONG. BARRIER 4' - O" FOR ANCHORED TYPE F CONG. BARRIER
MAXIMUM CONCRETE EXPOSURE TABLE
(CASE F ONLY)
SLOPE HEIGHT
(SEE NOTE 3)
1.75H : 1V 1'-81/2"
1.50H : 1V 2' - O"
1.25H : 1V 2' - 4 3/4"
HAND HOLE ELEVATION AT SLOPE/
SLOPE/FOUNDATION INTERFACE
: -..- N
.q : .... '
DETAIL 0
EDGE OF
SHOULDER I BACK SLOPE STEEPER
THAN 3H : 1V (2H : 1V MAX.)
I
STEEL LIGHT STANDARD -----::> ;
FOUNDATION c.____:
' !.---al----·
SECTION VIEW
CASEE
SLOPES 2H: 1V OR FLATTER BEHIND TRAFFIC BARRIER
OUTSIDE OF DESIGN CLEAR ZONE
4' - O" MIN.
I DITCH BOTTOM
FIXED BASE ~
FOUNDATION INTERFACE
VARIES (1' - 6" MAX.)
FILL MATERIAL (SEE NOTE 4)
SLOPE SUFFICIENT TO HOLD FACE
SLOPE INTERFACE
FILL MATERIAL (SEE NOTE 4)
PERSPECTIVE VIEW
CASE E & CASE F
MAINTENANCE PAD
EMBANKMENTS
Q) MAINTENANCE PAD -SLOPE TO DRAIN AWAY FROM THE FOUNDATION -NOT STEEPER THAN 5%
ELEVATION AT SLOPE INTERFACE
5' - O" MIN. FOR BEAM GUARDRAIL 8' - O" MIN. FOR UNANCHORED
TYPE F CONG. BARRIER 4' - O" FOR ANCHORED TYPE F
CONG. BARRIER
EDGE OF SHOULDER/ FACE OF GUARDRAIL
TRAFFIC BARRIER (BEAM GUARDRAIL SHOWN)
FILL MATERIAL (SEE NOTE 4)
SLOPE/FOUNDATION INTERFACE
SPECIAL DESIGN STEEL
NOTES
1. See Standard Plan J-28.30 for foundation details and construction methods.
2. See Standard Plan J-28.50 for pole base and hand hole details.
3. Values listed in the Table were determined using a 3' - O" diameter foundation. For design parameters between the values listed, exposure requirements may be interpolated between the values provided.
4. Fill material for Maintenance Pad shall be granular material. Alternately, Crushed Surfacing (Base Course
2· o" or Top Course) per Standard Specification, Section 9-03.9(3) may be used.
AND HOLE I
FIXED BASE
I
MAXIMUM EXPOSED CONCRETE EQUALS THE RATIO OF THE GRADE OF THE SLOPE TIMES THE DIAMETER OF THE FOUNDATION - SEE MAXIMUM CONCRETE EXPOSURE TABLE
FILL MATERIAL (SEE NOTE 4)
SLOPE SUFFICIENT TO HOLD FACE
LIGHT STANDARD ~ ; FOUNDATION c.____:
TOE OF BACK SLOPE
BACK SLOPE STEEPER THAN 3H : 1V (2H : 1V MAX.)
EDGE OF SHOULDER/
FACE OF CURB
STEEPER THAN 2H: 1V
' !. • - --1- - - -·
SECTION VIEW
CASEF
SLOPES STEEPER THAN 2H: 1V BEHIND TRAFFIC BARRIER
(SPECIAL DESIGN FOUNDATION)
OUTSIDE OF DESIGN CLEAR ZONE
4' - O" MIN.
FIXED BASE
2' - O" MIN.
SLOPE INTERFACE
DETAIL 0
FORE SLOPE STEEPER THAN 4H : 1V (2H : 1V MAX.)
STEEL LIGHT C--:
SLOPE SUFFICIENT TO HOLD FACE FILL MATERIAL
(SEE NOTE 4)
CEMENT CONCRETE TRAFFIC CURB
I
STEEL LIGHT C--: !
SLOPE SUFFICIENT TO HOLD FACE
, ~ Jackson, Flint ~-# /~ Aug 27 2020 12:01 PM cosisn
STANDARD __;> ~ - - - , - - - -FOUNDATION
SECTION VIEW
CASEG
ROADSIDE DITCH WITH FORE SLOPE STEEPER THAN 4H: 1V (2H: 1V MAX.)
PERSPECTIVE VIEW
CASE G & CASE H
MAINTENANCE PAD
BACK SLOPES
STANDARD __;> ~---~----FOUNDATION
SECTION VIEW
CASEH
CUT SECTION WITH BACK SLOPE STEEPER THAN 3H: 1V (2H: 1V MAX.)
STEEL LIGHT STANDARD PLACEMENT (FIXED BASE)
STANDARD PLAN J-28.24-02 SHEET 1 OF 1 SHEET
APPROVED FOR PUBLICATION
~~,-----STATE DESIGN ENGINEER ... VI Washington State Department of Transportation