HomeMy WebLinkAboutSUB201400160 Certified Engineer's Report 2017-08-20GEO-T E I O lI A`TIO II C■
.❑EAR GOALS FOUNDED ON OUR I1C rIO R ATIOWY
August 20, 2017
mr, Vito Ceuta
1730 Owensfiold Road
Charlottesville, Virginia 22901
RE Soil siJbpade stability
Out of Bounds Site Development CO T
Afberr#arfe COURN. Vlrgirria
CG TC Project No,: -l4G-1 7 7-069
Dear Mr. Cetta:
As requested, Geo-Terrain Or ni zation, Iroc. (GTO), has visited the above referenced project site W check
as- ristructed conditions of the roadways under construction. roadways checked as part of this project
include Out of Bounds way and Town Mews Lane. GTO obtained subgrade samples at previouSIY un-
sampled areas and returned them to our laboratory for subgrade stability analysis in general noo
with VTM-S (California Bearing Ratio).
Our staff has exercised the degree of care normally associated with a project of this type, All inspections
were performed in general accordance with 20Cr9 €BO Section 1704 requirements for special inspections.
Test results indicate the subgrade soils, when properly compacted to 1lirginia Department of
Transportation requ i re rn ents for subgrade soils, have an average CGR value 7-3 for the private streets,
and while average M subgrade support, are sim0ar to other COO results that have been performed across
the site at other locations.
Please see the attached laboratory date sheets for additional information -
Thank ycu fcr the 0PKAunKY to assist you in this capacity. If you have any gisesfians regarding this
letter, please do not hesitate to contact our office-
Sinerely,�fi
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tcn"i,
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ca!Engineer
C;/GTO {Soc_�jrnent,/�M Geot2CRrtioai 2014/14G-177-0691008 C63t letter $2C�--.7.doc
100-A INTERSTATE BUS PAR FREI)EFZIZK56L1RG, VA 224051613FF'IRE; 54n-368-5724• FAx: 540-ad5e-5735
BEAMING RATIO TEST REPORT
T
TM-008 ( 00 )
1
1
Penetration Depth (ire.)
2
p.8
0-4
-6
2
ov
4 24 46 72 96
Mottled . --.-....
- Soaked
Density 1-,PerC0FA of Moisture
peneity Parcant of Moisture
(pN) Mav� Dom- ' M
{Pcq AW. Oene-
1 0
103.3 100A 20.1
102.E 9 .9 25.3
Material Description
Reddish Browns and Brown sander Silt, tr- c clay and 1avel
Project No., 14G-177-069
Project: Out of Bounds Site Development COT
oume of Sample: Town Mews Lane Station 13+70 (l-nd)
Sample Number: 18 Depth: ! ul grade
Date: 1-15.16
BEARING RATIO TEST REPORT
G -Terrain 0manization
Elated Time (firs)
eBR (`/.) i.lnsarity surcnarrgd Max.
0.10 In. 9 20 in. Correction linj gbs.} 3-A0II
5,7 5.2 0.000 10 1,2
...........
r
uses dons. Moisture LL PI
5
ML, 103-7 19-8 44 6
'hest Descrip#ion/RemaAs:
Standard Proctor Compaction
Figure
BEARING RATIO TEST REPORT
VTM-008 (200 )
20
i
d0
4
0 0-1 0.2 0.3 0-4 0,
1
0,
2
3=
] L-
0
Penetration Depth (in.)
Bl"ad Time (hre)
--KloiQed
Danoigr Perarnt of iN4lu Jsrs
Denoi�. ...
Soaked
-. Parcent of #I10fa4urs
CBR rA)
�
Linanrtly
Corrar.#Jorrureharao
Max.
dwell
ipin Max. Dana- M
[Pefi
Max. Da.
re
: M
0.101% 0.20 in,
i w
1
107.5 0{}.1 t 7. }
1062
48-8 217
6A .3
0.000
t 0
[ A
--
2 A
3 El
AAaNdat Deacrlpdon
Max.
Optimum
Uses
Dana.
Moisture
LL
PI
7.
Reddish Brawn and Brown sandy Silt
t,
107.4
17.7
4
p
Projeet No: 14G-177-069
��77
Test DescriptionfRemarkcs:
Plrojeet: Out of Bounds Site Development T
tsndard Fractorrnpaction
Sou ree Of Sample: Out of Bounds Way, Center of Roadway
Sample Number; 15 Depth: subgr-ade
Date: 8-1-1 5
BEARING RATIO TEST REPORT G o—T I"rain Or[ i1}
Figure
G
m
4
BEADING RATIO TEST REPORT
VT 1-008 ( QO )
210
140
70
U
L
I
I
I
I I
0 4,1 0.2 0.3 0-4 0.5
no
U0
).4 �—
0L
Penetration Depth (in.) Elapsed Time (hrs)
Molded
Soaked
Linear
Max.
Density Percent of Modalure
Deaoly P""i t of Molawre
-..CBR.(%
0.10 In. 4.20 In:
Corm lon
Sun<har
Swell
pWx. dens. C%)
(110 &Ux. Dorm. N
(le.)
r )
1 O
114.3 99.8 14.3
1 13A 99.1 19.5
9's 1 9.7
0-000
to
0.8
6
_... .. --- - --
3❑
Material Descriptlon
gown and Reddish Brown sandy Silt, teace gravel and mica
Project No, 14-177-069
ProjecL Out of Boun& Site Development COT
Source of Sample: Town Mews Lane, Center of Roadway
Sample Number: 16 Depth: su rade
Date: &1 15
BEARING RATIO TEST REPORT
G -T rrarin Orcianization
USCS Dana. #Ilbhtura u PI
1po
1v L 114.5 14 l 0 0
Test Description/Remarks:
Standard ProctnrCorn paction
Figure