GU-421 - Type 1 MH2" TO 6" CONC RISERS
(4" MIN — 18" MAX)
USING NON SHRINK GROUT
PROVIDE SMOOTH FINISH
INSIDE AND OUT
2 HANDHOLDS
SEE COE STD DTL GU-423
POLYPROPYLENE SAFETY
STEP/LADDER 12" OC
PRECAST SECTIONS
4" MIN THICKNESS
11 TYP
MIN
SAND COLLAR
DR KOR—N—SEAL
MANHOLE <NOCKOUT
STEPS
FRAME AND
COVER
NOTES:
1. LOCATE MH LID OUTSIDE THE WHEEL PATH OF THE
TRAVEL LANE.
2. BASE REINFORCING SHALL BE #4 REBAR AT 12" OC
BOTH WAYS.
3. LARGER MH TO BE REVIEWED ON A CASE BY CASE
BASIS USING APWA STANDARDS.
4. STEP AND LADDER MAY BE USED IN LIEU OF
POLYPROPYLENE SAFETY STEPS. SEE COE STD DTL
GU-423.
CITY OF EDMONDS
PUBLIC WORKS
DEPARTMENT
`St. 18y-
MH FRAME AND COVER PER
COE STD DTL GU-420
_ _ _ �10" MIN TO
24" MAX
24" 28" MAX
d� 1
L <
6" MAX
° ECCENTRIC
PRECAST CONE
< d n
n < d
a
SEE NOTE 4
°e
48" MIN
,
da
d
$
e a
d
16" MAX
CONSTRUCT
CHANNEL
SHELF
6" MIN
REBAR
MIN 2" CLEARANCE
TYPE I MH
APPROVED BY: R. ENGLISH
REVISION DATE
OCTOBER 2021
STANDARD
DETAIL
GU-421