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.3 Limit of Excavat {on i Limi, of Excavation = 3r,o„
i ;, ;' ( � Narrow Tr Limit - - P :.f � � � : Narrow Trenc Lrmi� -
��.._._..
Lirrrit of Pxcavatiorl
TOP of concrete if trench
Com "acted I c
p
extends beyano' L or 3
1
Selee ted Ref; f, N i.� x - - -
h
v fi
_
PI AS � ca a vn
A.ST!✓I Stondara �treny9'h r v` -
cla sewer pipe
0/ 4..57,,0 Extra Strenglh Nar Tcencti Zimit '
'..-
C -13 - 44 T �. % -:: _ c /ay sewer i e C Z00 -07
e j
ab v - - --
a c /� R S'heCtn7 , rf used /s fo be
_ < r � h� etrna it used fo be ; &ff in lace � _,___ _ _ �� � �
P I r ; .
sewer 1 a g avel env & / oe
s Ft. t left / -, place from bottom :f i
A below a line :1.� lower
o r ,
f frerchto e %vcrfionof
.than or; rna/ ground surface `
ti ,..ta :pf 7 e. and w/11 be a/d
d . I for betril, th se Irm1t ( I
g ",q.S,rM Extra Strength
{, c
9
J9 1✓irn, /9 Mrrr 7 �t I der It�rn /3: p
lY, , ,,..,' f <, ,..� - i t
under �,; t. _ 1 _ la Se bluer pr e. C - �D� � �7 T
l�arro✓v Trwn_h Lirnrt firm rn�? terra! sheetin
y P !� �
Top of:cor/crete if' trench C /assBconcrete to bE / .
�/f used is to be r°ernoveo
..
;
extends be ono 4in� /t of'
4 q Jaced o a r 3
y 4 0 p n o aga,nst
, Qqd S aC& iroir?eo
/...C: ,.... /".
Excavation and /sturbed t /
_ , : , j � � - . ..; tl ma er/a or refs
I � - - -- � �. - ' ----�- , /led with car'?
ry w
/, �, Sh fO b-c� v o +� ...._,...- v: ,Y ,:v ., `, l' jr: c '., ✓r5 r o.5,
`S eG-'t //? J7 U1i w1d�h ' ,. ., /`�. a tr
7 ' =, o ' ` - - >_._. -n' " �9 �.;�,� > {. screenec/`. rave0.be %ti ✓t
, ,' �,. , � �. <_ ° ,� c c: a �c� � 4> c I 9
of t re n ch. �_ -! , -toed f e
p f hP,enveJoe,
- »--= 1�'A.S T.,�t�. £xrra S /�rengfl�
� 1v s�we i
_ OD - T M1n,
r ,1 ,
. , C -S /c- ,. . A J
,.,., . ;3'� ,
t
.
_, (fnderdr < >it7 , if usec'7`
u
„�;; ;.. - j `\�....,: �j :,; /IndPro'ra .:.yfS ut �,',; -.,� Un0'�r'J.rs7rn rf used n•�'.,.:;
19 p ,r, , /7. ,. l cd
.. `''oo ,. 7, a� �� c r
1 Screened grovel onve /ape Screened drove!
»fit Screened 7ro ve
TYPICAL SECTION 21" SEWER TYPICAL `SECTION 21 SEWER TYPICAL SECTION 8 SEWER STA. I I t 46 `TO 18 +06 ± 1N FIRM GROUND +
WITH ..�JNCPETE 'CRADLE STA. 3-5 + 47 TO 40 27-
3' 117. :4 Underdrain / USed �
orovel
Note.
±
„ a > r „3,1Iu,. STA. 0+ 02 TO 11 146 IN FIRtA GROUND
. ! a t.. i Screened i
�.'
'
The sewer renches ma be excavated anlider "than the
r .,ro vel refill bolo w � - -- -_ V
-� - - -- -- —,',� ft Limit of £ncavatlon abov th
normal Grade _ ! ,;
e e /me of Nar row Tr &nc/7 L/1nrf:
Pelovv the line of Narrow Trench Limit
not be excavated outside t "the frenchshou /o'
Nrn. inoleria/ T
e „
/9. ,:, - ; ; , -• . / t� r' " he LiY77it or £xca:vaf Ion: In
- ,.. ... , , ........ - ;: : Cas. S '
U � ^Q
removed outside this limit b & /ow the line of
U
N r i
o <a r� r to tra/ f 1. varies _ . _, . ar ow n ee °
r/r ,, na r; tch Limit th
, , .. '. � ....: -:.. - :: � .._ it � Contractor will b$ r& rlireCl f0 " r0(/ide
! C'
selected b 9 P
Se ect d .cefilL a bove f a concrefe era
_�_ _ _ f 1 � ., r .,.. i . • -. .. ..I , d/e `of C /ass' B concre e for the full width o f e'
cam let &d sewer l Trench el P h
} Selected Refili
•, P b the top of the prpc�, in place of the ser &erred
ravel a17ve10 e or C1a 1
r3 Io,, f
v ” ss /3 concrer & 1 rn place of Compact.
Selected Ref'i1/ br the full width of the trench below the tap
. ,, of e pipe as indicated' on ff7& dna i
� n w nqs, rh /s concrete shall
TYPICAL SECTION 12 SEWER be Laced at th &Contractor' &x
_ P s pens& excepting the;coner,iete
crodle o t
r p Sheet/n f d' k 1 t be aid for urrd It
9 r use fob e /effin place 1,6 AS7,-M Extra Streh fh t P er em 7a' be1 weep Sta. OtO�- jand
I UFT �R�U _ I belowa.11ne'/.5 lower ' that 9 Y-46 2,
clay sewer pipe .0
ZOD-44T-
on Ina/ rokrnd "surfd ce, z i ; It trench material is loosened or beta /
9 9 mes oosened
outside the Lrmrf of Excavation below / ?
::.3 jr t he '
Nc2rro.w Trench
,f mtt , it shall be removed and concrete trod/
, e or concrete
cortnr over pile "bents ;� —= ! ! t fill shah be loced as s ,a
t Led above.
5
,
" class A,
p
`Lunn of Exca ior7 -
J ✓Giro T rench Lrmrt ! „ i I; ; eoncret
....:: . .. ..... ,_:_ .mil__
�f�,.' ! lz Cover r
t
c ntrnuous, lap
T of concrete /f trench I
P _ 1 It
o .—
y'a �, ,a
&xtend be . n 1 t of -- - .., "_- 2/ ,AS,T,M Exra Str &n JF, -
. s c/o d Lim --rL -� " ; , ; i=- q , • �,:,a _ � n-
r a s i -` m
c1a Sevver�' Yoe / C 240.94T
�l P� ,,. l /
y !Ya o Trench Lrm/t _
9 P/ar kin s i ed
u y A,k
td
5 to Ca
8 8x3 -0 caps
;Screened t ays/ envelope I o f ,
.: q P ;
11 1✓/r 1. l9 M/ri: / . 3
x i D
ins
P.
t , , .,,5„ .1.. �.o ... x,•.
� ,' A.S.TM fktr o Sf
r2n�2th
Ir , , , , ,,,, .. _ !� � �+ , , • . .,.
r, S e r
_, r < , c - cre neo' 9
cl Giver pipe C ?00 447
y : . ; r. t p ::Uncle drain if us Pd
f
I
- rat .:. . ,., :. .- . <. _.— `--= .�__- -f —'�- — a i s . , p , .... -: � ...x. ✓? , j t _:1 ;. � , "3.
1 / frrn, !noter/aJ hoer
r � ,I � ✓ ° U�... -» f , 4, .C� � r. ,x 1 if i ?;:
,f used rs to bZ renrGVed acrd i. 0 ,-;' �I , ' ,':: {,, ;,_,' • ,. �, ° `'a: :. i. _.; •' _
, pile
.,.
space rmrnedlCltE.lurefrllPa _.. <? o s o v Cn. - „ .;: ;...,,} ! ,{ 1,:177 ' n:'
- ` - J a to creaned a o
: ., ° .._, ,.. '• Wif ! cOrTr/; C d .S. ! ,O o o 31,
!".., _. p O
:OpO o .- 9„ o. Uo op6o0`oC ,i ` t1 3 i
e p
O t or,. a
p 1 3
,
�nve e.
lo N�
P ik C t c.G?. •i 'i 4 y
,
°
LEXINGTO MASS.
ve
1 + tr> ,� . {,_ - .. - - -- -Un r it ' VINE
D� �� GO derdra n, ; uUed; BROOK SEWER
r
y� �-� ' s ' _:" � lieu ��: � , ,
Screened , r: >/e/
l/ 3 ` i„ t
rr uJeo ' ( M 1 � ;,
` 'Gravel ei1/ below
r SEWER SECTIONS
avyj norma drsrde e TYPICAL SECTION 12" SEWER
1.
/9 "1✓Ier, °o , ,; ON .P ILE FOUhiDATION
°�
SCALE- 1`= 1' -0`
Firm materi / E /. Val i "es APPROVED' UARY 1948
JAN
DRAWN 'B ,' ; FOR METCALF & EDDY NGINEERS .' METCALF & ED 20333
TRACED TYPICAL E ( � TION 21" SEWED DY
}
BO d
„ � EN GINEERS
'+ R.a Iae 9 OSTON, MASS.
GHFCK ..: STA, 11 t 46 TO ) +06'- IN SOFT GROUND
'R OF. P�a'OF. ENGR. MASS. NO. 70� GATE
k R ,
w TWA PR JECT 19 1�'i98 fi
1 ' x
/ .,. ',. ONTRRCT A SHEET 4 OF 4
ma . ,_' . '