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CONCRETE WALL
MANHOLE RUNG DETAIL
4
6
7
8
SECTION B -B
THRU RESI'LENT SEAL
AND MANHOLE
N
to
9
It
12
'8" SO. EXTRUDED ALUMINUM
ALCOA 6061 - T6 OR EQUAL
�Z
ell
3 As
CAST IRON MANHOLE COVER
WT.= 430 LBS.
E.L. LEBARON FOUNDRY CO. LT. 105 OR EQUAL
STANDARD FRAME AND COVER
AS SPECIFIED
D
2 =0 "Ir ADJUST TO GRADE WIT" PRECAST
,. TOP RING OR BRICK
3.0 STEPS PRECAST INTO WALL SECTION
AS REQUIRED ON 12" CENTERS
I :j.; —v'I -- - —- - —- ;f SEE DETAILS THIS SHEET
SECTION A- A
GASKET & FLANGE
OMITTED
PRECAST CONCRETE
MANHOLE
TYPE OPTIONAL
A.C. TEE WITH 6° LEG
BRICK DAM TO
MID DIAMETER — — — - -- —_
A. C. COUPLING
MAN -HOLE WALL
� t
6"MINIMUM
ENCASEMENT
A. C. 6 DROP
USE DUPLEX
^ t.
—r
r•`r
ADAPTOR IF NOT
<' ri
1 :t r i=
MiACHiNEO LAND
�, .,
-; ,
I
�';� •(
SEE STANDARD
MANHOLE DETAILS
\ •i S
MANHOLE BASE , �, •r , > - G ,
1 , Y:
r
+<�t � +t. }i�,�a Al r{.y =4 F�b <_y. n= � =•s.
6"GRAVEL BASE'
DROP MANHOLE SECTION
6"-90 A C.
ELBOW
0.12 SO IN LIN. FT. REINFORCEMENT
PRECAST MANHOLE NOTES
1 1 /2 "COR— TEN BOLTS OR APPROVED EQUAL WITH WASHER
2 CAST IRON: COMPRESSION FLANGE A.S.T. M. A48 CLASS 20
SIZE OF FLANGE TO MEET CLASS 8i TYPE OF PIPE
3 -PIPE SECTION
4 CAST IRON INSERT °-' 1/2" TAP A. S. T. M, A48
5 SMOOTH BEVELED SURFACE TO RECEIVE RUBBER GASKET
6 RUBBER GASKET A.S.T.M. C4-43 -65
7 BEVEL TO ALLOW FOR MISALIGNMENT
8 INNER SURFACE OF PRECAST CONCRETE MANHOLE
9 OUTER SURFACE OF PRE —CAST CONCRETE MANHOLE
IO PRE-CAST MANHOLE A. S.T.M C478-68
I1 ASBESTOS CEMENT CLAY CAST IRON OR CONCRETE PIPE
12 9 ALLOWABLE MISALIGNMENT OFF CENTER IN ANY DIRECTION
WITH ENGINEERS APPROVAL
DROP SECTION MAY BE CONSTRUCTED
OF BRICK AS SHOWN
I'— 044
FITTING BELLS TO
BE KEPT FREE
OF CONCRETE
1, °O,l a a A
SIDE OF
EXCAVATION
i
3'-O° W X 2` —O" D
PLAN BEND
THRUST BLOCK WATER MAIN
1, CLERK OF THE TOWN OF LEXINGTON, MASS.'
HEREBY CERTIFY THAT THE NOTICE OF APPROVAL
OF THIS PLAN BY THE LEXINGTON PLANNING BOARD
HAS BEEN RECEIVED AND RECORDED AT THIS OFFICE
AND NO APPEAL WAS RECEIVED DURING 'THE TWENTY
(20) DAYS NEXT AFTER SUCH RECEIPT AND RECORDING
OF SAID NOTICE.
.
DATE 146S% TOWN CLERK
APPROVED BY
LEXINGTON PLANNING BOARD
t0.1
4eta.Gt� tea / qS
DATE
234;0.3
---_q
C.B. ` p CB.
1.233.59
23L8I�
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i
GUTTER GRADES
REV. JAN. If, 1931 v 16 j
CUL-DE-SAC TRINITY TRINITY COVENANT ESTATES
REALTY LEXINGTON, MASS.
TRUST DETAILS �.
CLEMATI S ROAD
OIVA E. HINTSA ASSOCIATES
CONSULTING ENGINEERS
N E W TON, MASS.
SEPT. 3, 1980 SHEET 7 OF 7