HomeMy WebLinkAbout83- 796 - Design FlowAY
—.. 1 i a
Locus
Ul
Cove
Expansion Pit
P Leachlrty Pit
ElSeptic Tank
.r+•�•./00' Line
�•••"�50' Line
--30' Line
—•—��Top of Bank (Gs determined
by Conservation. See notice
Of Intent on Memo.)
✓V U U / 1 / 1Vrr
Hay 8ailes
—Roof Drains to dry wells.
—All Driveways have been stokes angled into ground
calculated to drain to streets
and street drain system.
Profile
Hay Bolls Double Row'
I I'. Set staggered and
Double Stake to ground
PLAN
Not to SC ale
See calculations for Subdivision
and Planning Board Filing
Working
Sot/ Tests made for Septic
System
Permit Procedures in front
Lot in
Area of Proposed System
on June
/7th /987 showed the soil
to be
O"-30" Loom 8 "Subsoil"
30"- 144"
Clean Coarse Sand. No water encounted
Perculat/on Rote Less than
2min/inch
4" P
fro m
4" PVC from
/. D
/ 0// 6' 6" 12,0 /
O. D
/0/ 6"
Working Diameter Pit
Ground Surface -�:2
Pit L
Pit Detail
PLAN
-/ /2 Stone
I
Working
Area
Bottom
7rr 2 = 86.59
Side
Mdh = 197.92
Allowable Load
Bottom
/ Gal. per S. F
Side
2.5 Gal. per S. F
To tol
86.59 x / = 86-59 Gots.
TEST BY
197.92 x 2.5 = 494.80 Gals.
---/2" minimum depth if this
is more than /2111he cover shot/ be extended
to within l2" of ground surface.
-2"- l/8" Stone
—Alt Stone to be washed free of
Iron, "Fines" and Dust
3/4 "- 1'/2" Stone —All structures to be precast concrete
If under areas of vehicular traffic
design for H2O loading.
—All pipe to be PV.0 - if under areas
of vehicular traffic use schedule 40
SECT/ON
Scale /"- 40'
SEPTIC TANK DETAIL
NOT TO SCALE
NOTES !1 SEPTIC TANK SHALL BE 4 INLET AND OUTLET TEES TO BE CAST IRON OR
REINFORCED CONCRETE. SCHED 40 PVC
2 SEPTIC TANK TO WITHSTAND H-10 LOADING TO BE CENTERED UNDER MANHOLE COVER
UNLESS UNDER PAVEMENT, DRIVES OR 5 1000 GAL, TANK. SHOWN OR ANY OF EQUAL
TRAVELED. WAYS, WHEREIN H-20 LOADING
SHALL APPLY. CAPACITY APPROVED
3 ALL PIPE CONNECTIONS AND CONCRETE MANHOLE COVER
CONSTRUCTION TO BE WATERTIGHT WITHIN 12' FINISH GRADE
8' 0"
14
T
L - _7 WATER LEVEL
- - - - - - - - - - — - - -i 15 2"
I _ INLET TEE
PRECAST
— 46 4'_d' OUTLET
NK
� — TA — �` 5'6° LIQUID DEPTH TEE ,.
110
/
o0 BOTTOM ON LEVEL STABLE BASE
PLAN VIEW rRncc-cvrnrw v/rm
DESIGN CRITERIA
DESIGN FLOW
4 BR x 110 Gal./BR 2 440 Gol/Day
REQUIRED SEPTIC TANK
440 x 1.5 = 660 GAL.
SEPTIC TANK PROVIDED = 1000 GAL,
SIZE OF LEACHING FACILITY REQUIRED
DESIGN PERC.RATE - 2 MIN./INCH
LeacAin P/I's
!0.5 /ometer
SIZE OF LEACHING FACILITY PROVIDED
2 Pits at f0.5 diameter x 6 dee
d SOIL TEST PIT DATA INDICATES INDICATE
PERK -- OBSERVED
TEST. OROUNDWATER
TP TP TP TP
GRD. EL. GRD. EL GRD EL GRD EL
GW EL GW EL GW EL JI(GW. EL.
Loam
Subsoil
Test
Sand
No Water
I
IJ
1
LINE
DATE
DATE
DATE
6/17/87
TEST BY
TEST
TEST BY
TEST BY
WITNESSED BY
WITNESSED BY
WITNESSED BY
WITNESSED BY
Health Agent
PERC RATE
PERC RATE
PERC RATE
FERC RATE
2 MIN/INCH
MIN/INCH
—MIN /INCH
MIN/INCH
REVISION DATE ACHECKEDBY:
Lot 9 on Oystel. Cove on Boss Rive
O 40 80for Conservation Commissio} (,&e
T:
8644
Graphic Scale "� DATE: 05129187
__ BRIAN y
;g MCSV;IEENEY HIDELL-EYSTER TECHNICAL SERVICES;NC. DRAWINGNO:
'o • .No.IB�S
VIL 198 WHITING STREET
A q E� k C/ HINGHAM , MASSACHUSETTS 0204:
(617) 749-8040
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