STANDARD SEGMENTAL GRAVITY WALL NOTES ON PLANS      8-18-09
(Instructions for use are in parenthesis after each note if
applicable, choices are in parenthesis separated by "or" and
retaining wall no. is optional if there is only one wall.)

FOR SEGMENTAL GRAVITY RETAINING WALLS, SEE SEGMENTAL GRAVITY
RETAINING WALLS PROVISION.

FOR GUARDRAIL, SEE ROADWAY PLANS AND SECTION 862 OF THE
STANDARD SPECIFICATIONS.

FOR SINGLE FACED PRECAST CONCRETE BARRIER, SEE ROADWAY PLANS
AND SECTION 857 OF THE STANDARD SPECIFICATIONS.

A CONCRETE BARRIER RAIL WITH A MOMENT SLAB IS REQUIRED ABOVE
RETAINING WALL NO. ____.  SEE PLANS AND SEGMENTAL GRAVITY
RETAINING WALLS PROVISION FOR DETAILS OF A CONCRETE BARRIER
RAIL WITH A MOMENT SLAB. (Structure Design will add a plan
sheet for a concrete barrier rail with a moment slab to the
wall plans when required.)

A FENCE OR HAND RAIL IS REQUIRED ON TOP OF RETAINING WALL
NO. ____.  SEE ROADWAY PLANS FOR FENCE OR HAND RAIL
ATTACHMENT DETAILS.

FREEZE-THAW DURABLE SEGMENTAL RETAINING WALL UNITS ARE
REQUIRED IN ACCORDANCE WITH THE SEGMENTAL GRAVITY RETAINING
WALLS PROVISION. (Use this note for walls with blocks
exposed to repeated freeze-thaw conditions and significant
use of deicing chemicals such as walls facing roads in urban
areas and Divisions 11, 13 and 14.)

REINFORCED CONCRETE COPING IS REQUIRED FOR RETAINING WALL
NO. ____. (Use this note when a 6” [150 mm] deep half V-
ditch is required, a fence or hand rail will be attached to
the wall or coping is required for other reasons.)

USE SEGMENTAL RETAINING WALL UNITS WITH A ____________ FACE
FOR RETAINING WALL NO. ____.

USE SEGMENTAL RETAINING WALL UNITS WITH A ____________ COLOR
FOR RETAINING WALL NO. ____.

A SUBDRAIN PIPE (IS or IS NOT) REQUIRED FOR RETAINING WALL NO.
____.

BEFORE BEGINNING SEGMENTAL GRAVITY WALL DESIGN FOR RETAINING
WALL NO. ____, SURVEY EXISTING GROUND ELEVATIONS SHOWN ON
THE WALL PROFILE VIEW (WALL ENVELOPE) AND SUBMIT A REVISED
WALL ENVELOPE FOR REVIEW.  DO NOT START WALL DESIGN OR
CONSTRUCTION UNTIL THIS ENVELOPE IS ACCEPTED.

DESIGN RETAINING WALL NO. ____ FOR WALL HEIGHTS EQUAL TO THE
DESIGN HEIGHT PLUS DEPTH TO TOP OF FOOTING (DIFFERENCE
BETWEEN GRADE ELEVATION AND TOP OF FOOTING ELEVATION).

DESIGN RETAINING WALL NO. ____ FOR THE FOLLOWING:
1)   MINIMUM SERVICE LIFE = (75 or 100) YEARS
2)   ALLOWABLE BEARING CAPACITY = ____ PSF (kPa)
3)   MINIMUM EMBEDMENT ELEVATION = ____ FT (m)
4)   IN-SITU ASSUMED MATERIAL PARAMETERS:
      MATERIAL TYPE       UNIT WEIGHT   FRICTION    COHESION (c)
                            (gamma)    ANGLE (phi)   PSF (kPa)
                          PCF (kN/m3)   DEGREES
         BACKFILL             ___         __           ___
        FOUNDATION            ___         __           ___
(For minimum service life, use 100 years for critical block
walls as defined by the MSE wall policy and 75 years for all
other block walls.  Modify numbers 2 and 4 as necessary for
variable wall heights and subsurface conditions.
Number 3 is optional.  Default minimum embedment in
provision is 2 ft [0.6 m].  Use No. 3 when more than the
minimum embedment is necessary such as block walls subject
to scour.)

THE MINIMUM EMBEDMENT ELEVATION FOR RETAINING WALL NO. ____
INCLUDES EMBEDMENT FOR SCOUR.

DESIGN RETAINING WALL NO. ____ FOR A LIVE LOAD (TRAFFIC)
SURCHARGE.

DESIGN RETAINING WALL NO. ____ FOR THE (POINT, LINE or STRIP)
SURCHARGE LOAD SHOWN.

DESIGN RETAINING WALL NO. ____ FOR A PIPE EXTENDING THROUGH
THE WALL AS SHOWN.  VERIFY PIPE LOCATION AND ELEVATION
BEFORE BEGINNING SEGMENTAL GRAVITY WALL DESIGN OR
CONSTRUCTION.

DO NOT PLACE CONCRETE FOR FOOTINGS FOR RETAINING WALL NO.
____ UNTIL OBTAINING APPROVAL OF THE EXCAVATION DEPTH AND
FOUNDATION MATERIAL.