HomeMy WebLinkAbout1994-08-31 Septic System Soil Report9 Soil Boring
Swedlund
Septic
— Service
Installation Estimate
/x'/60—,V
,C� Tz
MOUND DESIGN WORKSHEET
(For Flows up to 1200 gpd)
A. FLOW
Estimated gpd (see pages D-% or 1-3,4,5)
or measured gpd.
B. SEPTIC TANK LIQUID VOLUMES
-2 opo gallons (see Pages C-3 or C-5)
C. SOILS (refer to site aluation)
1. Depth to restricting layer = /•Z inches
2. Depth of percolation tests = /Z inches
3. Percolation rate 44- mpi
4. Land slope 4 170
D. ROCK LAYER DIMENSIONS
1. Multiply flow rate by 0.83 to obtain required area of rock
layer: A x 0.83 =
4:�,cv2 gpd x 0.83 sq. ft./gpd =- sq. ft.
2. Select width of rock layer (10 feet or less) _ /o ft.
3. Length of rock layer = area + width =
Soo sq. ft. + ZC7 - ft = 422 ft.
E. ROCK VOLUME
1. Multiply rock area by rock depth to get cubic feet of rock;
Sba sq. ft. x / ft. -,�co cu. ft.
2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards;
-9,v cu. ft. + 27 = &&; cu. yd.
3. Mu:tiply cubic yards by 1.4 to get weight of rock in tons;
i��cu. yd. x 1.4 ton/cu. vd. _ :�, tons.
F. ADSORPTION WIDTH
1. Percolation rate in top 12 inches of soil is 14 mpi
2. Select allowable soil loading rate from table on page E-16;
-�� gpd / f 0)
3 Calcu:ate adsorption width ratio by dividing rock layer
loading rate of 1.20 gpd/ft2 by allowable soil loading rate;
1.20 gpd/ft2+ ,sem gpd/ft2 = 2 , 4 c'
Check this value on page E-16.
4. Multiply adsorption width ratio by rock layer width to get
required adsorption width;
/x2.dvft= Z4'ft
G-19
D-7
C-3
tT•r.0 .t�11R rd.. _ tl..M Ir 71•
34.nC t.uM CAP&WKS, M 6410.5
mom
1..ur 111
11,1
1— IN/
1111
1— 1111
r
•n er �'
IN.
`s
C-3
34.nC t.uM CAP&WKS, M 6410.5
mom
1..ur 111
11,1
1— IN/
1111
1— 1111
1.11
• . � / NN
IN.
Rock Bed
...... ... ... .
E-16 i
�•wr. V.� YM _ r. r..V �1
------------
♦. .._
11. .M •- _
Determine Surface Arca
Rectangle - Area v L x W
x W _
Circle - Arca = x x (RadiusY
3.14 x x =
square feet
square feet
Other - Get Surface Arra from Manufacturer
square feet
T
wuluh
l
l cngth
Radius
R - 3.14
2. Calculate Gallons Per Inch
There are 7.5 gallons pct cubic foot of volume, therefore you must multiply the area
times the conversion factor and divide by 12 inches per foot to calculate gallons per inch
Arra x 7.5 gpft I + 12 inchs per fool
x 7.5 + 12 = 7-1 gallonslinch
3. Calculate Gallons to Cover Pump (with 2 inches of water covering pump)
(Height (in) + 2 inches) x gallons/inch (82)
( 10 ++ _) x.(_ _ Z6-4 gallons
4. Calculate Total Pumpout Volume
a. To maximize pump life select sum size for 4 io 5 pump operations per day.
a o gpd + 4 gallon; pc•r dose
b. Calculate drainback
1. Determine total pipe length, 4-C' feet.
2. Determine liquid volume of pipe, (_¢gallons per 1(N) fctit.
3. Multi ly length by volume: Drainback quantity
f� feet x ZZA gallons/ 1170 ft. _ _7 gallons.
Esiimalod Scwsge Flows in Gallons per day
(gw)
Numhcr
1.25
19
7.77
1.5
10.58
of
Type 1
Typc II
Type III
T•rsc
�v
Bedrooms
4
66.1
2
300
223
180
3
450
300
218
eas
4
600
375
256
'r u"
5
750
430
294
6
900
525
332
�►r<
7
1050
600
370
R
1200
675
408
wl�r+w
c. Total pump out volume equals dose volume + drahAvick
1-15'&eallons per dose + _Z_ gallons = /S7 gallons
5. Calculate Volume for Alarm (tvpicaliy 2 to 3 inches)
Doth (in) x gallons/inch (82) _
Z / x- = 42. gallons
6. Calculate Reserve Capacity (75% the daily flow)
Daily flow (sce page D-7) x.7; _
&C;IX .75 = 4-9-0 gallons
7. Calculate total gallons
gallons over rump + gallons pumpout +g,.il ns alarm + gallons reserve caperty
03 + u4 c+a 5 +a 6
i S. + _Zq � + + _ _ 717--.;p gallons
R. Total Depth (Total gallon divided by gallon per inch)
Total allon (07) + gallon/inch 02)
2 = r inches
r 4!1. (.,,,.,. �
c..n�... , 1001 1
1.25
19
7.77
1.5
10.58
2
17.43
2.5
24.87
3
38.4
4
66.1
Rcurve Capacit)
A him
Pump On
T') I Pumpoul %°alumc
Pump OR
Pump Hcighi
9. Float Separation Distance (equals Iota] pumpout vol111110 t i
Total pumpout volume (1140 + gallons/inch (ND
_ZZ--,i� inches
1. Select number of perforated laterals_
2. Select perforation spacing = _7 ft.
3. Since perforations should not be placed closer than 1 ft. to
the edge of the rock laver (see p. E-14), subtract 2 ft. from the
rock laver length.
Rak u�knR4h f t. =— ft.
4. Determine the number of spaces between perforations.
Divide the length above by perforation spacing and round
down to nearest whole number.
Length perf. spacing = 1& ft. + ft. = 1 spaces
(3) (2)
5. Number of perforations is equal to one plus the number of
perforation spaces .
spaces + 1 = / % perforations/lateral
6. Multiply perforations per lateral by number of laterals to
get total number of perforations.
3 at. x F.�/7 y= -s- perforations.
!. Ce=e=-,..e re: -j --:ed f:cw :a -e by tr;:_:plytng
number of perforations by flow per perforation
(see page E -17)
.5-1 . 7
X —?7 5.,M
tet,
S. If laterals are connected to header pipe as shown on page E-
15, select minimum required lateral diameter from table on
page E-17; enter table with perforation spacing and number
of perforations per lateral. Select minimum diameter for
perforated lateral = I `/z inches.
E -17a
Head
Pertcrrouon di=eter (inches)
7/32 IN
103
056 071
1 S
069 0 9C
2 O
^ 90 103
2 i
094 17
30
0.93 I
40
1.13 1 37
�S
126 1 65
allse 10 (M1N of 4Nd for residential fY fans
bt;se 2.0 fee
of head for other esubluh,nents
9 If perforated latera: system is attached to manifold pipe near
the center, a: on page E-12, perforated lateral length and
„um. cr of perforations per lateral %%ilt b, approximately one
half of that in sten h. Using these values, select minimum
diameter for ju-furated lateral from page E-17 as / Vz-
Inches
E -17b
M
E-12
1._5 Ln :n 1.5 tncn I r
lf:.-.
2-5
1. la
3.0
13 1 i
:5
3-3
12 16 i
-,5
CO
11 15
_3
� it
10 13
M
E-12
A. Determine pump capacity:
Gravity Distribution
I. Minimum suggested is 600 gallons per hour (10 gpm) to stay ahead of
water use rate.
2. Maximum suggested for delivery to a drop box tlf a horne system is 2,7{1(1
gallons per hour (45 gpm) to prevent build-up of pressure in drop box.
Pressure Distribution
3. a. Select number of perforated laterals
b. Select perforation spacing - *S ft.
c. Subtract 2 ft. from the rock laver length.
cL Determine the number of spaces between perforations.
Length perf. spacing = AL fi. + 3 It. spaces
e. _Z42- spaces + 1 = 17 perforations/lateral
L Multiply perforations per lateral by number (if laterals to
t total nunnber of perforations.
X -L- _ prrforations-
tiwT. �.,00 ,l
g. .Z -/x • _am� ' gpm.
SELECTED PUMI' CAPACITY -51 gpm
B. Determine head requirements:
1. Elevation difference between pump and point of discharge.
d feet
2. If pumping to a pressure distribution system,add five feet for pressure
required at manifold
S feet
3. Friction loss
a. Enter friction loss table with Fpm and pqv diameter.
Read friction loss in feet per IW fLvt from wFdr.
F.L. = Z•Ok ft./100 ft of pipe
b. Determine total pipe length from pump to discharge
point. Add 25 percent to pipe length for fllttng
loss, or use a fitting loss chart. Equtvolrnt pipe
'cngth ' 25 times pipe length =
o _ x 1.'_'5 = S't, feet
c. Calculate total friction loss b; multiplying
friction loss in It/ 100 ft by equivalent pipe IcnFth.
Total friction loss - �St7 x _2t__i?-+IW = / -. feet
4. Total head required is the sum of elevati(m Litffcrcncc,
special head requirements, and total friction loses.
111 42) (3c1
TOTAL NEAT) 1 feet
C. Pump selection
I. A pump must be selected to deliver at least zz gpin (Step A)
with at )east feet of total head (Step li).
E110 PrprORATION OF ► P[rMOn►T[D L►T[R►L
/-
C. w Co-
iNM.I r�
l.ro .I G.L..r.. POW a IV 1..
q
L.nSW Loiw w► wiles M �.! r Lew �.w.N
.••. V saw
P., W..+• Chow*ft coo POW ft#
ISM VMq.r
64�!w fri�11� �.,L .1 Nes. L.t.,
P.-I.G.- UK." .1
two. SW Lapp Mow...1 L.."
..1 W
oayr.l UN ....+ry S &Jr 4
DOW. 11w..y Sow. L,..w
TAOIT or f [RroRAT1oN VISCI IARCr51N CIV
1fe.id I'crfuratiundla"tat0rcMsl -
I0
0.69
1,0A
O.S6 074
15
069 040
2 Ob
060 1 W
25
034 117
30
046 1.23
40
1.13 1.47
so
1.26 165
aUv 1.0
bUse 2
foot of head for rrudernttal sy-men-S
0 feet of head for other establishments
Plpc Lcrph
Point or TDischarrc
Elevatilm Diffcrertccl
1'untp
F 18b
1.S Inch 2 o I h 3.01r,.h
pen rr a w ► tm h or p.,w
I0
0.69
0.20
12
0.46
0.28
14
1.28
0.38
16
1.63
0.48
IS
2,03
0.60
20
2.47
0.73
0.11
25
3.73
1.11
0.16
AIL
15 23
1.55
0.23
S0
790
2.06
0.30
11.07
: 64
0.34
45
14.73
3.28
1 049 1
50
3.99
G.36 ,
55
4.76
071
60
S 60
0 82
DOWNSLOPE DACE WIDTH
If landslope is 3% or more, subtract rock layer width from
adsorption width to obtain minimum downslope dike toe
Z4 ft-1t�,ft=14ft
Calculate mound height at edge of rock laver on downsloF:?
side;
Determine depth of dean sand fill at upslope edge of rock
layer: Separation Z feet
Multiply rock layer width by landslope to determine drop
in elevation; Slope Difference
—L�7 x�_%+100 ft
Add depth of clean sand depth of clean sand for
separation at downslope edge to depth of rock layer to
depth of soil backfill to get mound height at downslope
edge of rock layer;
Z ft + , 4- ft+eft+_ft ft
Enter table on page E-18 with landslope and downslope
dike ratio. Select dike multiplier of 14.7(v
Multiply dike multiplier by downslope mound height
to get downslope dike width. 7(. x 4..4 - 7/ ft
Compare the values of step G.1 and Step G.21 Select the
greater of the two values as the downslope dike width;
Z/ feet
Calculate upslope dike width using upslope mound
height and upslope dike multiplier from page E-18;
4!;-x I -L+-ft
Total mound width is the sum of upslope dike width plus
rock layer width plus downslope dike width;
ZIft+j I-_ft+_C ft= ft
a.
b.
C.
d
e.
8
h
3. If landslope is 2.9 percent or less, basal width includes both the
upslope and downslope dike widths.
a. Calculate downslope dike width using steps G.2.a.
through G.21; feet
b. Calculate upslope dike width using upslope mound
height and dike multiplier from Page E-18;
x h = ft
c. Add downslope dike width to upslope dike width to rock
layer width
ft+ h+ ft= h
n IQ --
E-20
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Established in 1962
LOT SURVEYS COMPANY, INC. F 1O
ICE.
LAND SURVEYORS SCALE 1" 100,
REGISTERED UNDER 71 IE LAWS OF S'i'AIE OF MINNESOTA O Denotes Moo Mommont
to Denotes Wood Nub Sot
7601 73rd Ave. No. 560-3093 For Escmalien pNy
Minneapolls. Minnesota 55428 111000.0 Denotes Eslsthy Elevation
••D Denotes Proposed Elevation
�urlle�org �crtiticute
-41IF— Denotes Surfeiea Droinar
NICK SLETTEN)c T
Proposed op of Mock
\ \ _ Proposed Oerr.ro Floor
Proposed Lowest Floor
Type of Building
�JII 625'4"Ier) iUllkou t
Islot� f 10
I �' s—dTtllTt• � VftN1NAGE EI1Fit:NE►1T•"�� i'�
%
/ ot4 rl �v I
I�
got -
Ij AoV to.l
a., g ;^I�C M Ire✓---- � 1
• to
I I f I I +
�4se N i Ci
' I,is
�
-�• — -23.14 - -
Y�A�r"51 CITU OIrl ORONO
r( r-oAt; 14 fr��} SUIL'DINO BILA Rev��••
D Er TA t L .sapec*om
0604.1: l+' 30, ic3•,e OA1! PERMIT NO.
�APPRO%LD AS SUBMITTED
APPROV00 WITH CORRECfIi:'iS AS NOTED
Q- ----,- - �__ ►. -� NUT APPROVED —CORRECT ti RFS.'i�'.rIT
15.0- �•�. 210' t) 121i� 11rr7 " ON" A,n
nlant+ a#& tow yc jr ,.r+c,ma o,.. A', wtrlt I",- .w. n•
T i ' rn Iw rpglplHr wrtn au "OkAble WEdWg a roan+[
• W �7 1 aWM►1r •S! r.ltll�l'nR AMTS nol 9pec/IrUrfY no-#--
4EEP THIS PLAN SET Uhl SITE At ALL TIMI.
64*
t2.4 lr7'd i 134 Lot 2. Block 1, BATSIK HILL
I
IV
`0 V • ;
1
1 �0 1w •
r o'r f�
Art�d 15a:i------------ zL,� i 11'15 I 11.0 r�olla�
'fir
\a+\ `o'" p"r
t
I ex •
lot
I
Proposed building information mutat be chocked with opproved bul" plan
before excavation and construction..
The only easements shown are from plats of record or informallon provided i
by client
We hereby certify thrll this r.5 a trun and correct repre.enlai.on of a survey ,
of the boundaries of the above descnbed land and the localion )1 all buildings
and visible encroachments, A any, from or on said land ASI r
Signe d _
Surveyed by us this-- 25th _d �y ol_ January 1 g 95 symond A. Prasch Minn. Rey. No. 4743
LAYER OF GEOTEXTILE
FABRIC
GRASS COVER
CLEAN SAND FILI
MAXIMUM SLOPE
3 TO I
LOAMY S)AND CAP
—PERFORATED LATERAL
6 INCHES
TOPSOIL
x-4
' ,:
TOPSOIL PLOWED OR ��4 TO CLEAN12R INCHES 4
DISKED SURFACE ,�� _ % SLOPE
�y' SUBSOIL ; .,2
CROSS SECTION A - A
PIPE FROM
PUMPING CHAMBER
' r'1
PERFORATED I�
LATERALS
,
BED ,+REA S
LJ_ z
' I J
W I
; i W � m
_ ( ' Z z
� Z Z �
c
20 o o 20
INCHES JlNCHff
DIKE ----}---'0 FEET, QIKE—
Z�, MAX.
TOTAL WIDTH
v - 457
i � I
PLAN VIEW
• ,_ _ . _ _. Q/ _meq,% .
R•
;or
ation or Pro)t:ct
borings made by _
Clr*alflcatlon Sybtcm•
Auger uoed (Check [VO)
Lnj:y of Snll Rorinj::.
• bate
MSlltl USpA-Sf. Ur,l f ird other
Itind or Inver or h�cket other
Depth, burin„ numocr
In ( Surface rlevatlon
fret
1
3 — ••
,
Lr.d of bcrinj� at f et•t.
:;anClad w..tcr t
Prebnont at - feet of Ovr t�1
t,uurt, atter burink.
1;6t pre:.ent in Loring hulr
4c,ttlej ;oil-
Qf.errVed .,t —_� fret .,I drl•t',
Not preNvnt In boring- 1.:.1e �-
ao1•t! burli,v ,.ur.1.rr
In
fret
rl
I
I—
� 1
i
i
I _
End of Lorin{: at feet.
Standl-•,• hater tat.lr.
Present •.► (pct of deptl.,
hours after boring.
INot present in borinv hole ' (_ I
Mottled sot:
(11,servvd •.t i fret of depth.
Not present In Garint• holy
THIS DOCUMENT IS
OF POOR QUALITY
Logo of Soil 1+or pFs
Location or Project _
borings madu by r f _ _ Uate
Classification System: IMSIIn USDA-Sf'•; Unif led ocher —
Aulter uued (check two): hand ' or Power y; Flight _. or backet V.
: other
Depth. borinK num6wr '
In Surface elevation
feee '—
o —
Us' lot h_
In
feet
n ---
I
tnd of boring at feel.
Standing Later table:
Present at ivet of ltepth.
Fours after buriny.
Nc.t present to boring pule j
Muttlyd Soil'
ULbrrv►•d at _—_. fret 4-f drl•th
Nut pre%,.nt In bnrtnt• I,c.lc
bur
Sur
� I I
End of boring at feet.
Scandin? water cable:
Present at fuet of depth.
hours after boring. I
Nut present in borinv hole I
Mottled boll:
nikservvd at fret of depth.
Nor present in borinp hole
THIS DOCUMENT IS
010- BOOR QUALITY
• PERCOLATION TEST DATA SHEET LDS%
Test hole location Holo numberlZ
Date cast hole vas prepared Depth of hole bottom._ inches.
Diaoeter of hole. inches.
Sotl data from test hole:
Depth, inches Soil texture
Method of scratching sidewall
:.cpth of pea-sized gravel in bottom of hole. inches..
Uate and hour of initial water filling
Depth of initial water filling. inches above hole bottom.
ncthaJ uucJ to maintain at least 12 lt►clicb of vaster depth in hole for at leant
v hours
Percolation test rerdinga made by on
a.m.
btarting at .m. PLanimum .rater depth above hole
(dace)
....ra.d[tea[ 1.tict.ca.
Ilme Percolation
:ime I Interval. ncahartmunt. Drop in water rate. 1 kczarkb
tiluuCea ttt�f�ea
It: vuI. itic lac o I orinutct. r. r
lncn
1
THIS DOCUMENT IS
OF POOR QUALITY
PERCOLATION TEST DATA SHEET p6 (-07)
W
Text hole location Hole numberL:7- L�
Date test hole was prepared . Depth of hole bottom. inches.
Dtaometer of hole. tnches.
Sall data from test hole:
Depth, inches Sull texture
Method of scracchinR sldewall
Depth of pcA-sized gravel in bottom of hole. inchcb.
Witte and hour of initial water filling
Depth ui initial water 11111ng. inches above hole br.ttoa.
nethuj used to u.alntaiti ac least 12 Riches of water depth in hole for at leuut
4 1►our s
?crcolac lun test readinsa n4ade by on
a.m.
tstartlt.p at !L.Kloum water leech above hole
.w.
L�aLr)
S..r:t.d tVzt. 11►Cl�ea.
iIML: Percolation
Time lllturval. nL;an..reu.cnt. Orup In Water race. I kezarkt:
nlnutc� �nCl�� . 1cvcl , 114CI-r. r-Lnutee rc r
lncn
i
111111111111t
THIS DOCUMENT IS
OF POOR QUALITY
PERCOLATION TEST DATA SHEET
s
(,E*!gr Lar)
Test nolo location Hole number 103 40"
Date test hole wax prepared �' 9 Depth of hole bottom, inches.
Diaslecer of hole. Inches.
Soll data from test holo:
Depth. inched Soll texture
Kethod of scratching siduwall
Depth of pea-sized gravel In bottom of hole, lnchce.
Uutc •,nd hour of lnittial w4ccr filling
:jcptth of inItLal water filling. inches above hole t.ctroa.
method ubed to maintain at least 12 lnellea of Vater depth in hole for at least
. Koury
eureolatiun tcbt reodlr►xa elwde by On
6trrtinb r:
(d.►tc)
.luring L90L. inches.
;A. M. . r'...imuA w"cer depth above hole
.tn.L: ( PC[colatlor.
:law IitLcrvrLrup In 6.Jtcr [ace. ec:..aCk6
lu.,t�+ .(•cr.�. l�vc 1 , 111CI.V;, minutce re r
incn
I
--,.....vmw..I -_-4"
THIS DOCUMENT IS
OF POOR QUALITY