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METRO STD. LOCK /NO
FRAME 8 COVER —
CROWN ELEVS. TO
GRADE BE EQUAL MORTAR
EXCEPT AS NOTED TYP. LATERAL
_ CONC. ADJUST /NG f ONNECT /ON
BLOCKS
SEE FORM RECESS TO
NOTE 6 MATCH PRECAST
�u 4' -0 D/A .
of r
�O �O
, vo '
MORTAR
O
SLOPE
I "INI2"
5 "MIN
Lai
.I r•: I';
Q T, I `_ -
,.
PRECAST
CONC. BASE 5� 4 77AT M,
(OPTIONAL)
JOIN
DETAIL A
ACCEPTABLE ci)
�. .4t • t : • . - CONNECT /ON
BASE - SECTION
TYPICAL BELL TYPICAL RUBBER
CAST FOR FLEXIBLE GASKET JOINT.
JO /NT. I 1
I8 "MAX.(TYPALL
TOP HALF OF PIPE TO B I I CONNS.)
REMOVED TO CONTOUR I I TYPICAL LATERAL _
OF INSIDE OF M.H. BROKEN 1 1 CONNECTION —�
EDGE$ TO BE PLASTER-
ED SMOOTH WITH — — — —
MORTAR. TYPICAL
OF ALL MANh�VLES
' W
BELLS SHALL BE
CAST INTO PRE-
CAST MANHOLE - -
BASE BY MANHOLE
FOR AN ACCEPTABLE
FLEX /BLE JOIN i
MANUFACTURER __v_ - _ ALTERNATE, SEE
DETAIL BELOW.
STANDARD TYPE A PRECAST MANHOLE
8" TO 21" (INCLUSIVE)
FINISH GRADE
ICJ
BASE- PLAN
TYPICAL CONNECTION
DETAIL
GROOVE FOR 48'
M.H- SECTION-\ /_
PIPE MORTARED INTO
w--L11 BARREL OF M.H.
1_ W
1 J
\
PLACE APPROVED PLUG
Q FOR FUTURE PIPE
MORTAR DAM INVERT TO
SPRING LINE 2 "THICK
_ 8 "THICK SLAB
W/RE/NF. PLACED
2 "CLEAR OF
BOTTOM FACE —,
POUR CONC- TO
6 "MIN. CONC. o I j .: COMPACTED FILL
COVER �. :-; ...=� : OR ORIGINAL GND.
Ind i � �• •! F
CROWN ELEVS TO BE EQUAL I i : _ : 6 "MIN. COVER
1 _ DROP PIPING TO BE SAME
SIZE AS INTERCEPTED
SEWER
- PIPE MORTARED INTO
BARREL OF M H.
p
0A)
s `
METRO STD. LOCKING
FRAME 8 COVER
CONC. ADJUSTING
BLOCKS
SEE NOTE 6
PRECAST
. SLAB
PRECAST CONC
BASE (OPTIONAL)
STANDARD TYPE B PRECAST MANHOLE
sPiGOr LENGTH t 2 24" TO 48" (INCLUSIVE)
_
(6 "M /N) -CLEAR
- WALL OF MH.
SIN Y4 MIN. SIZED STL JOINT SLEEVE
5/8 "0 BARS 3/6:. 2 4 131 IVWF FASTENED TO
I6-
STANDARD DROP CONNECTION
72" TO 48"
REDUCING SLAB
2" TYP
NOTES --36" WATER MAIN CROSSING
1. A MINIMUM OF DAYS CURING TIME SHALL BE REQUIRED
PRIOR TO BACKFILL -�
2. THE CONTRACTOR SHALL PROVIDE APPROVED EXCAVATION
SAFEGUARDS DURING CURING PERIOD
3. THE SPECIAL CROSSING SHALL EXTEND FULLWIDTH
OF TRENCH
4. NO LOADS SHALL BE PLACED UPON CITY OF SEATTLE
CONDUIT AND THE 42" SEWER PIPE SHALL BE EX 15T1N6
INDEPENDENTLY SUPPORTED DURING CURING PERIOD MANHOLE
/000 PS/ CO NC. i -- - - /2- - i ,BREAK 01/r E)' /ST
BEDDING C TYP) /O_ ' - 6 I 36" S TUB /NS TALL 1
42" RCP 1 4Z" /. 0- 5741B AND
_-
i FLEX /BLE BACKF /LL COSAIION + ; RECIYANNEL
� 4* -6a DENS /TY STYROFOAM 7
1 - -- — — — -- - - - - -- — -a
FORMED SURFACE (TYP)
TYPICAL STUB INE
LOCATION MATCH EX /STING 48 "CASINC7 1 1 PLACE 3000 PS/ CONC.
CROWN W/ Tf- /,E C /TY OF SEATTLE '
TRUNK ,SEWER 36'' WA 77,5,f MA /N �, ON UND /STUBBED OR
COMPACTED MATER /AL
WITH 48" CASING
PLUG
SLEEW AT PLANT
CEMENT MORTAR PLACED IN FIELD
ASPHALT ✓O /NT FILLER
PIPE RUBBER GASKET
TYPICAL FLEXIBLE JOINT
DETAIL "A11
8 "THICK 5
.L A 8 W /RE /NF
PLACED 2 CLEAR OF
BOTTOM FACE—
5 BARS
72” TO 28" REDUCING SLAB
PRECAST CONE OR
VERTICAL SECTION
FULL MORTAR
✓O /NT
VERT /CAL SECTION
EX /STING
PA VEMENT
CITY OF SEATTLE 36" WATER MAIN CROSSING
NO SCALE
8' Ml N.
o
h
Q '
�v
p ku 3" OF APPROVED •414" M/NIIS R
v CRUSHED ROCK - SPREAD,
SHAPE & COMPACT A S PER h
APPL /CABLE FafrlON OF w
Z' MIN WAS'�l- SPEC. SEC. 24
SUBSEQUENT BACKF /LL SLOPE TO DRA IN (M /N)
�, TO RESTORED DITCH SECTION
REFER TO DW65-4 45 �
TRENCH vo I
A RE
SHOULDER RESTORATION
a
NO SCALE
NOTES:
6"T YP I ELIMINATE 2 "x 4' PRECAST CONE SECTION ON TYPE A 8 B MANHOLES
LESS THAN I / ' DEEP TO CROWN OF SEWER. BEFORE REDUCING 7
FOOT DEPTH OF 4' OR 6' CIRCULAR MANHOLE SECTIONS, USE -
REDUCING SLAB FOR SUPPORTING ADJUSTING BLOCKS.
2 MANHOLE STEPS ARE NOT REOU /RED.
3 PRECAST VERTICAL SECTIONS SHALL CONFORM rO A- S.T.M.
DES /GNAT /ON C76 OR CPAW 102. CONTRACTOR TO SUBMIT
DESIGN DRAWINGS FOR APPROVAL.
2 "TYP. 4 ALL JOINTS, EXCEPT PIPE JOINTS, SHALL BE MORTAR FILLED.
5 ALL PIPES SHALL BE CONNECTED TO MANHOLES WITH FLEX /BLE
40 BARS JOINTS PER TYPICAL DETAIL.
LOCATE ECCENTRIC MANHOLE GONE SO THAT CENTER OF FRAME
Z
Z
W �
r�
m
18' MA X .
STA. 74.00 T9 STA. /2-.-85' IN
15-'- AA_ X - -- -- —. v
STA . l* 65 rO STA. 26 400
J
h
O
-SIDE SLOPES TO
SUET GoNrRA +. TORS V,5Y,4LL SEgUEN T BACKF/L L
OPE=RATION BE CIA SS -M ORII AS
ED, EXCEPT THAl TYPE
''C" MATERIAL MAY BE
SUBSTITUTED FOR TYPE "B"
WHERE SPECIFIED COMPACT /ON
CAN 8E ACHIEVED
CL -0 INITIAL BACeo L
LIEW OO PSI CONCRETE BEODI A/G
iYI /N.
TYPICAL T RE NCH SECTION
NO SCALE
AND COVER 15 OI/ER t OF MANHOLE GNANNEL UNLESS OTNERWISE AS CONSTRUCTED
%07 D/R fGTE D, DATE :5 - 6:>
48" TO 2 6" REDUCING SLAB DOT E
DESIpNED:RLH JH MUNICIPALITY OF METRO POLITAN SEATTLE JUNE 1968
DRAWN: ES CEDAR RIVER TRUNK-SECTION 3 FILE NO.
R 502 - I
REC MMENDED: CON TRACT N0.
M s —ss
SANITARY SEWER MANHOLES
OR.WiN °N°S 3
Ho REVISION DATE A E „a;,.;.��,;Cfe� . CONSTRUCTION NOTES AND DETAILS SHEET t3 of 6
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