HomeMy WebLinkAbout1968-02-28 Construction Soil Boring Report• |virv« ».7U1 -T i .^vi»f>y ■ A ' r.- I»-1I •»* »> ► * ,<^ •%y i-rfi<i l^'M .-iV” • --JV^ ^|V..| »*
SOIL ENGINEERING SERVICES, INC.
J. S. BRAUN. P.E.
Sponsel Craft Builders
4225 Wooddale
Minneapolis, Minnesota 55416
Re:68-52 SOIL BORINGS
Lot "U" New Casco Cove Addition
R.L.S. #461
Navarre, Minnesota
Mr. Sponsel:
4. 4>Vi«>ao r.i»npfration test borincs have been taken onej: .k;: irs;.?'" f.a.a....a
and water conditions for the proposed house.
.-u i. . w«.— taVain at the eeneral locations which you suggested,
which is located 69 feet northeast of the northeast lot corner.
i;*i:eVfallir«‘'35^in;res^ ?hru‘’the jte£r^jL ^
°t^ore"'en”oun?ereron This luZ us^ eliminates
the driving of casing and the need of jetting water.
retained ln"i^is “offite for a period of 60 days to he available for
examination.
ofuit nZl“toHng! nu o"f‘'ihe'‘ht'rin°gs"Sfre rrob“5'‘{t
for the presence of ground water.
(Xm LITTIRS ANO fICPOATS AAi #OH TH€ lXClU$<Vl USC Of THC CL i£NT TC W**0U Th€t AM AOOMSStO. AUK) TMf tA COMMUNICATION TO ANV OThCRS.
OA PUNUCATiON Of STATlMCNTf CONCLUSIONS OA llTAACTS fAOM OA ACSAAOiNG OUA ACf>OATS iS AiSCAvCO MNOiNS QUA ¥VAiTTCN AAAAOvAL.
BORINGS • TESTS • INSPECTION • ANALYSIS • REPORTS • RECOMMENDATIONS
68-52
Sponsel Craft Builders -2-2/28/68
RESULTS
Logs of soils encountered, penetration resistances, and water level
observations are plotted on the attached soil boring log sheets.
In the area of the proposed house, the lot slopes downward from the
front house line to the area of boring ST-3. Sumac are growing in the
proposed house area.
Boring ST-2, taken near the front house line encountered a non to
slightly plastic fine sandy loam lensed with fine sand thruout its
20-foot depth. The topsoil appeared to have been eroded away in the
area of this boring. Boring ST-1, taken down the slope from boring
ST-2, encountered 1.5 feet of dark brown plastic sandy loam at the
surface. Between the 1.5 and 6-foot depths, this boring encountered a
silty clay loam and between the 6 and 15-foot termination depth, soils
similar to those encountered in boring ST-2 were indicated.
The north rear corner of the house was inaccessible to the equipment.
However, boring ST-3 was taken as near to the corner as possible. The
surface elevation at actual corner is on the order of 2 feet higher
than at boring ST-3. Boring ST-3 encountered a black plastic sandy loam
to the 4-foot depth. Topographic features would indicate that the depth
of black soils would be considerably less along the rear line of the
house. Soils ranging from a fine sand to a clay loam were encountered
to the 15-foot depth in this boring.
Penetration resistances recorded in the borings ranged from 12 to 40
BPF.
Water was encountered in probing only boring ST-3. Water was not
encountered in probing borings ST-1 and ST-2 to elevations 84.3 and
84.7 respectively. Water was indicated at the 4-foot depth or at
elevation 87 in probing boring ST-3. The current lake level is at
about elevation 87.7. Water levels should be expected to show normal
seasonal and annual fluctuations, and could be expected to vary with
the level of the adjacent lake.
RECOMMENDATIONS
We understand that a 2-story house with a walk-out basement to the rear
is planned for this lot. A proposed top-of-block grade on the assumed
datum of about 106 is currently planned. The corresponding approximate
footing grade in the areas of the respective borings has been plotted
on the appropriate soil boring logs.
No extensive depths of topsoils were encountered in the borings taken
on the knob and also on the slope. However, inspection revealed that
rather extensive depths of black organic materials could be anticipated
%oti imfiti fCii
1
68-52
Sponsel Craft Builders -3-2/28/68
dep?hs'£f or^Inic“sonf coulVbl antfci'"/H® T* extensile
slibs“?S\?SiriS
irthe«"bS?ings"woild®bradeqiate'’f^ ?oT “ encountered
Imposed by «?nLirwldth™iuse°?oo??ngl aJoe"?s* S^t JUf*
bafkfiU pilced “ * and a'compacted
level of*thridja«nt*lake“*®Fu^lh®^®‘’ ''«P*.the highest known
lot"*and*jhrdeIlth“'^f*»k^ the borings in relation to the area of the
Very truly yours,
SOIL ENCINEEAING SERVICES, INC.>01L ENCINEEAING SERV
9- J- ,
vs. Braun, P.E.6^^*'
Soils Engineer
JSB/DLG:mlk
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LOG OF TEST BORING S
68-52
PROJECT: Lot "U" New Casco Cove Addn.
tOCATiON: R.L.S. M61
Navarre, Minnesota vertical SCALE :1" = 3'
ST-1 ST-2
1.5
r .
Surface Elevation = 99.3*BPF
Sandy loam, plastic,
dark brown,
frozen
Silty Clay Loam,
light grey mottled with brown
frozen to moist
(very stiff)
Fine Sandy Loam, slightly
plastic, with a few thin
Sand lenses,
grey-brown mottled with
reddish brown,
moist
Water not encountered in
probing boring immediately
after completion and when
rechecked 3 hours later.
*See attached sketch for descxiptio of beich marks
20’
Approximate footing gride
id
p
h
__ ___
Surface Elevation » 104.7*BPF
Fine Sandy Loam, non to
slightly plastic, lensed
with Fine Sand,
brown,
frozen to moist
(medium)
77777
Water not encountered in
probing boring immediately
after completion and when
rechecked IH hours later.
MotL , ntc
EST BORINGS
" New Casco Cove Addn.
#461
e. Minnesota vcariCAt scAti:1” - 3'
on ■ 91.0
sxic.
ic)
.evel)
id With Fine'
I to slightly
ind and Fine
{^ moist
%n 4.0' when
lately after
when rechecked
SOIL ENGINEERING SERVICES INC.
100
■
CLAY
LOAM
LOAM.
■k
‘•■It-
CLAY
CUY LOAM /
so *j
LOAM
SILT LOAM
^ ^ ^
SILT'SIZe FRACTION IN FCR CCNT
SOILS
TEXTURAL CLASSIFICATION CHART
ADAPTED PPOM U.S. SUPEAU OF CHEMISTPY AND SOILS
S12£S OF SOIL SEFAWATF
MA CTIQN particle diaiiiter
SANDSILT
CLAY
FROM |.0 TO 0.074 MM, FROM 0.074 TO 0.001 N m
LESi THAN 0.001 MM.