Upload
others
View
0
Download
0
Embed Size (px)
Citation preview
GEOTECHNICAL ENGINEERING DIVISION OF MATERIALS AND TESTS
GEOTECHNICAL REPORT
US-441 / SR-71
FROM US-411 (SR35/SR-338)
TO MACON LANE
STATE PROJECT NO. 78008-0244-14
PIN NO. 104959.01
SEVIER COUNTY
FILE NO. 7809312
N
PROJECT SITE
1
File No. 7809312
GEOTECHNICAL REPORT US-441/STATE ROUTE 71 FROM
US-411 (SR 35/ SR358) TO MACON LANE SEVIER COUNTY
PROJECT NO. 78008-0244-14 PIN NO. 104959.01
Executive Summary
Summarized in the report are the results from visiting the site, reviewing
the proposed plans, drilling, and CBR/Bulk testing for the redesign of State Route
71 (Chapman Hwy.) from US 411 (SR 35/SR358) to Macon Lane in Sevier
County. The project consists of widening the existing roadway and realigning the
intersection for safety. It is recommended that all cut and fill slopes be placed at
no steeper than a 2:1 ratio. It is also recommended that riprap be placed in the
existing ditch along Macon Lane from approximately Station 17+00± to Station
21+00±, refer to the report for details.
2
File No. 7809312
GEOTECHNICAL REPORT US-441/STATE ROUTE 71 FROM US-411
(SR 35/ SR 358) TO MACON LANE SEVIER COUNTY
PROJECT NO. 78008-0244-14 PIN NO. 104959.01
Introduction
The following report contains the site investigation for State Route 71
(Chapman Hwy./US 441) from US 411 (SR 35/ SR 358) to Macon Lane in Sevier
County. The proposed safety project is designed to add a middle turn lane and
to improve the intersections with the adjoining roads. The investigation
performed consisted of visiting the site, reviewing the proposed plans, auger
drilling and CBR/Bulk testing.
Geology, Soils and Site Conditions
The site is located in the Valley and Ridge Physiographic Province. The
underlying geology consists of bedrock from four different groups/formations.
The northernmost formation (the beginning of the project) is the Nolichucky
Shale, which consists of pastel-colored flakey clay shale and gray commonly
oolitic shaley limestone lenses. The next formation is the Copper Ridge
Dolomite, which consists of a coarse, dark-gray, knotty dolomite with gray,
medium-grained, well-bedded dolomite and abundant chert. The project then
crosses into the Maynardville Limestone. The Maynardville Limestone is thick
bedded, bluish-gray, ribboned silt and dolomite, nodular limestone and a light
gray, fine-grained, laminated to thin-bedded non-cherty dolomite. The final
formation the projects crosses is the Well Creeks Formation which consists of
3
File No. 7809312
gray limestone and dolomite, with angular chert blocks and fragments and minor
shole, mottled red and green, calcareous.
Surface and Subsurface Exploration
Visual inspection along the greater portion of the project was
accomplished except along intervals where the landscape is heavily covered in
vegetation. Auger drilling in areas of cut sections that were accessible was
completed. Some cut sections were in accessible or utilities were located in the
area. The drilling indicated that the cut sections will be in soil material throughout
the project. Refer to the boring logs, soils sheets and typical cross-section at
Station 176+00 for details.
Recommendations and Discussion
SR 71 – Chapman Hwy
The alignment of SR 71 (stations increasing north to south) alternates
between cut and fill sections right and left of centerline, with the centerline
elevation basically unchanged except between approximately Station 174+00 to
Station 182+50. The maximum cut depth is approximately 23 feet and the
maximum fill height is approximately 17 feet.
A retaining wall is proposed right of centerline from approximately Station
177+00± to Station 181+50± to minimize the encroachment of the cut slope on to
a private residence. The cross sections produced as part of the Preliminary Field
Review Plans indicate that the proposed Right-Of-Way is to be located 10 feet
right of the wall face. As a general rule for standard or conventional cut walls,
the ROW should be located at a minimum a distance equal to the wall height (H)
4
File No. 7809312
from the wall face – see attached typical section at Station 177+50. It should be
noted that for a 20 foot-high wall, an additional 10 feet of ROW is recommended
to construct standard Cast-in-Place Semi-Cantilever, Mechanically Stabilized
Earth (MSE), or Soil Nail walls.
For constructability purposes, a construction easement beyond the ROW
limit is also needed to construct the standard walls without temporary shoring, if
no existing permanent structures are present. The construction of a soil nail wall
requires an easement to the end of the nails, which are expected to range in
length from 0.7H to 1.0H, depending on the soil conditions and the horizontal and
vertical spacing of the nails.
If the ROW is not adjusted, three wall types may be used if the Right of
Way is located 10 feet beyond the face of a 20 foot-high cut wall:
Pile and lagging wall Piling framed wall Reverse L-shaped semi-cantilever wall in conjunction with sheet piling
An anchored wall may be considered if a permanent underground easement
were obtained that extended 35 feet from the wall face. Conventional
Mechanically Stabilized Earth (MSE) or cast-in-place semi-cantilever walls are
not feasible with the currently proposed ROW limitation – see the typical cross
section at Station 177+50. It should be noted that the cost to construct an
anchored, pile and lagging, or piling framed wall is expected to range between
100 to 120 dollars per square foot of exposed wall face. It is estimated that a
450 foot-long pile and lagging, piling framed, or anchored wall with an average
height of 18 feet would cost approximately $890,000 dollars to construct. It is
5
File No. 7809312
recommended that the cost of obtaining the additional ROW required to construct
conventional retaining walls be determined. A conventional MSE or cast-in-place
semi gravity wall is expected to have a lower unit cost, including the expense of
excavating and backfilling the zone behind the wall, than the specialty walls,.
It should also be noted that additional engineering will be required to
design and incorporate a wall into the construction plans, as the roadway
designer will develop the retaining wall conceptual drawing, and a more detailed
geotechnical investigation of the proposed wall site will be required. These tasks
are considered part of the structures-related activities, and the completed wall
drawing is to be included with the Final Construction Plans
Macon Lane
Macon Lane is to be widened with small cuts right of centerline and fills
left of centerline. It is recommended when filling the existing ditch left of
centerline, from Station 17+00± to Station 21+00±, that the ditch be constructed
during dry conditions, or to place geotextile and 2 feet of Type B rip-rap in the
bottom of the existing ditch to allow the excess water to drain out. This is to be
done if a drainage pipe is not placed in the existing ditch. Refer to the typical
cross-section at Station 19+00.
It is recommended that no slopes be steeper than 2:1. It is also
recommended that a note be added to the plans to advise the contractor about
following TDOT Standard Specifications For Road and Bridge Construction
STATE OF TENNESSEE DEPARTMENT OF TRANSPORTATION
GEOTECHNICAL ENGINEERING
BORING LOG Project Reference Number 7809312 Region I Project Number 78008-1244-14 County Sevier Location US – 441/SR 71 from US 411 (SR 35/SR338) to Macon Lane Data Started 5-14-13 Date Completed 5-14-13 Geologist/Soils Engineer McDowell Drill Crew Chief Plemons
Station Hole Location Depth Sample Description No. Reference C/L No.
173+00 1 65’ Rt. 0 CLAY ● topsoil (0’-1’) ● reddish orangish, slightly moist, firm, stiff @ 4’ (1’-17’) 17 Terminated 174+00 2 100’ Rt. 0 CLAY ● topsoil (0’-1’) ● reddish orange with light chert, slightly moist, firm, stiff @ 9’ (1’-27’) 27 Terminated 175+00 3 80’ Rt. 0 1 CLAY ● topsoil (0’-1’) ● reddish orange with light chert, slightly moist, firm, stiff @ 7’ (1’-27’) 27 Terminated 176+00 4 50’ Rt. 0 CLAY ● topsoil (0’-1’) ● reddish orange with light rock fragments (chert & sandstone), slightly moist, firm, stiff @ 15’ (1’-27’) 27 Terminated 177+00 5 50’ Rt. 0 CBR #1 CLAY ● topsoil (0’-1’) ● reddish orange with light chert, slightly moist, firm, stiff @ 17’ (1’-27’) 27 Terminated
SR 71/US 4
41
SR 71/US 441
FO
RD
HIL
L L
AN
E
SH
AD
Y L
AN
E
c
PC
169+
67.3
1
170
175180
S 4
3%
%d 3
8’
59" W
S 1
8%
%d 3
2’ 5
9" W
50
PC 50+82.29
PT 51+80.86
POT 52+17.77
c
c
c
A
c
S 4
7%
%d 3
3’
15" W
S 2
0%
%d 4
6’ 5
3" W
POT 60+00.00
PC 60+47.79
PT 61+52.92
POT 61+88.03
c
c
c
A
c
60
PROP. CONST. ESMT.
PROP. CONST. ESMT.PROP. SLOPE ESMT.
PROP. SLOPE ESMT.
PRES. R.O.W.
PRES. R.O.W.SR 71/US 441 STA. 171+75.00 =SHADY LANE STA. 52+17.77N 569539.6717E 2629469.4517SR 71/US 441 STA. 173+60.00 =FORD HILL LANE STA. 61+88.03N 569477.4176E 2629643.6502
PROP. R.O.W.
C
CU
RB
CU
RB
ASP
11’ A
SP
26’ A
SP
N
CONST.
TE
NN
ES
SE
E D
.O.T
.
DE
SIG
N D
IV
IS
IO
N
S
NA
P P
T
FIL
E N
O.
S
NA
P P
T
TYPE YEAR PROJECT NO.SHEET
NO.
8/2
7/2
01
3
N:\G
eotech\F
iles\R
egion 1\78-S
evier\F
Y2012\7809312\cadd files\S
R71_(7809312).dgn
STATE OF TENNESSEE
DEPARTMENT OF TRANSPORTATION
SEALED BY
MA
TC
H L
IN
E S
TA
. 169+
50 M
AT
CH
L
IN
E S
TA
. 182+
50
117’
327’
427’
527’
SCALE: 1"=50’STA.169+50 TO STA.182+50SEVIER COUNTYSOILS
227’
SAMPLE
NO.DESCRIPTION DENSITY
MOISTURE
OPTIMUM MOISTURE
RANGE
IN-SITU
MOISTURELL PL
CLASS
AASHTO
CLASS
USCS
1 75 37 MH
HOLE SAMPLE DEPTH
NO NO
1
-
1
2
-
-
1
-
1
1
-
INDICATES LOCATION WHERE SAMPLE WAS TAKEN AND LAB TEST PERFORMED.
ALL OTHER SAMPLE NUMBER LABELS IN CATE AN APPARENT SIMILARITY
BASED ON VISUAL IDENTIFICATION IN THE FIELD.
DI
CLAY - reddish orange with light chert 85.5 25.8-37.9 N/A A-7-5(45)30.0
NO.DESCRIPTION DENSITY
MOISTURE
OPTIMUM MOISTURE
RANGE
IN-SITU
MOISTURELL PL
CLASS
AASHTO
CLASS
USCS
1 50 29 CHCLAY - reddish orange with light chert 93.8 20.0-28.5 N/A A-7-6(23)23.5
CBR
5
CBR
0-1.0
1.0-17.0
0-1.0
1.0-27
3
4
5
0-1.0
1.0-27
0-1.0
1.0-27
0-1.0
1.0-27.0CBR 1
TE
NN
ES
SE
E D
.O.T
.
DE
SIG
N D
IV
IS
IO
N
S
NA
P P
T
FIL
E N
O.
S
NA
P P
T
TYPE YEAR PROJECT NO.SHEET
NO.
8/2
8/2
01
3
N:\G
eotech\F
iles\R
egion 1\78-S
evier\F
Y2012\7809312\cadd files\S
R71_(7809312).dgn
STATE OF TENNESSEE
DEPARTMENT OF TRANSPORTATION
SEALED BY
EXISTING GROUND
FINISHED GRADE
1130
1135
1140
1145
1150
1155
1160
1165
1170
1175
1180
1185
1190
1195
1130
1135
1140
1145
1150
1155
1160
1165
1170
1175
1180
1185
1190
1195
VPC 173+10.11EL. 1175.17
c
VPI 178+17.61EL. 1205.96
c
6.07
% -5.97%
c
c
SR71 171+75.00 =SHADY LANE 52+17.77ELEV. 1166.97SR71 173+60.00 =FORD HILL LANE 61+88.03ELEV. 1178.05
170+00 171+00 172+00 173+00 174+00 175+00 176+00 177+00 178+00 179+00 180+00 181+00 182+00
1200
1205
1210
1215
5(50’RT)4(50’RT)
3(80’RT)
2(100’RT)
1200
1205
1210
1205
A. SOIL MATERIAL
SOIL MATERIAL IS MATERIAL THAT IS PREDOMINANTLY MADE UP OF NATURALLY
OCCURRING MINERAL PARTICLES WHICH ARE FAIRLY READILY SEPARATED INTO
RELATIVELY SMALL PIECES, AND IN WHICH THE MASS MAY CONTAIN AIR, OR
ORGANIC MATERIALS. THIS MATERIAL MAY CONTAIN ROCK PIECES IN THE FORM
OF DISCONNECTED SLABS, LENSES, OR BOULDERS OF LESS THAN APPROXIMATELY
0.5 CUBIC YARDS. THE N SOIL GROUPS CONSIST OF CLAY, SILT, SAND,
GRAVEL, COBBLES, BOULDERS (LESS THAN 0.5 CUBIC YARD VOLUME) OR A
COMBINATION OF ANY OF THE CONSTITUENTS. FOR CONSTRUCTION PURPOSES,
THIS MATERIAL WOULD TYPICALLY BE CONSIDERED TO BE EXCAVATABLE BY
CONVENTIONAL EXCAVATION MACHINERY SUCH AS PANS, TRACK HOES, OR FRONT
END EXCAVATORS/LOADERS. THIS MATERIAL WOULD HAVE A SHRINK FACTOR AS
GIVEN IN THE SHRINK FACTORS SHOWN IN SECTION 2-145.10 OF THE DESIGN
GUIDELINES OR AS RECOMMENDED BY THE GEOTECHNICAL ENGINEERING SECTION
OF THE MATERIALS AND TESTS DIVISION
4-203.02
.
MAI
SCALE: 1"=50’STA.169+50 TO STA.182+50SEVIER COUNTYSOILS
CLAY A. SOIL MATERIAL
TOPSOIL A. SOIL MATERIAL
1(65’RT)
NOTE: SHRINK FACTOR OF 5 PERCENT RECOMMENDED BY
THE GEOTECHNICAL ENGINEERING SECTION
00 1023040506070 10 20 30 40 50 60 70 80 90 100 1 0 1 0 1 0 1 0 1 01 2 3 4 580901001 01 01 01 01 0 12345
STATE ROUTE 71
SEVIER COUNTY
0
1
1
1
1
118
1190
200
1210
220
230
240
F
G E
L. 1187.7
8
OF
FS
ET
98.5
6
EL
.1215.7
0
OF
FS
ET
-5
2.7
0
EL
.1191.3
6
4:1
PR
ES
. R
.O.W
.O
FF
SE
T -
85
.94
PR
ES
. R
.O.W
.O
FF
SE
T 4
2.9
5
PR
OP
. R
.O.W
.O
FF
SE
T 4
6.0
0
+ .0000176
2:1
OR
FLA
TTER
SLP
OE
4
A. SOIL MATERIAL
SOIL MATERIAL IS MATERIAL THAT IS PREDOMINANTLY MADE UP OF NATURALLY
OCCURRING MINERAL PARTICLES WHICH ARE FAIRLY READILY SEPARATED INTO
RELATIVELY SMALL PIECES, AND IN WHICH THE MASS MAY CONTAIN AIR, OR
ORGANIC MATERIALS. THIS MATERIAL MAY CONTAIN ROCK PIECES IN THE FORM
OF DISCONNECTED SLABS, LENSES, OR BOULDERS OF LESS THAN APPROXIMATELY
0.5 CUBIC YARDS. THE N SOIL GROUPS CONSIST OF CLAY, SILT, SAND,
GRAVEL, COBBLES, BOULDERS (LESS THAN 0.5 CUBIC YARD VOLUME) OR A
COMBINATION OF ANY OF THE CONSTITUENTS. FOR CONSTRUCTION PURPOSES,
THIS MATERIAL WOULD TYPICALLY BE CONSIDERED TO BE EXCAVATABLE BY
CONVENTIONAL EXCAVATION MACHINERY SUCH AS PANS, TRACK HOES, OR FRONT
END EXCAVATORS/LOADERS. THIS MATERIAL WOULD HAVE A SHRINK FACTOR AS
GIVEN IN THE SHRINK FACTORS SHOWN IN SECTION 2-145.10 OF THE DESIGN
GUIDELINES OR AS RECOMMENDED BY THE GEOTECHNICAL ENGINEERING SECTION
OF THE MATERIALS AND TESTS DIVISION
4-203.02
.
MAI
TYPICAL SECTION REPRESENTATIVE OF
STATIO
0
1
1
1
1
118
1190
200
1210
220
230
240
CLA
TOP SOI
TE
NN
ES
SE
E D
.O.T
.
DE
SIG
N D
IV
IS
IO
N
S
NA
P P
T
FIL
E N
O.
S
NA
P P
T
TYPE YEAR PROJECT NO.SHEET
NO.
8/2
8/2
01
3
N:\G
eo
tech
\F
iles\R
eg
io
n 1
\7
8-S
ev
ier\F
Y2
01
2\7
80
93
12
\cad
d files\S
R7
1_
(7
80
93
12
).d
gn
SEALED BY
L A. SOIL MATERIAL
Y A. SOIL MATERIAL
N 170+50 TO STATION 177+00
NOTE: SHRINK FACTOR OF 5 PERCENT RECOMMENDED BY
THE GEOTECHNICAL ENGINEERING SECTION
00 1023040506070 10 20 30 40 50 60 70 80 90 100 1 0 1 0 1 0 1 0 1 01 2 3 4 580901001 01 01 01 01 0 12345
STATE ROUTE 71
SEVIER COUNTY
0
1
1
1
1
118
1190
200
1210
220
230
240
OF
FS
ET
-37.5
0
EL
.11
90
.87
PR
OP
. R
.O.W
.O
FF
SE
T 5
6.0
0
PR
ES
. R
.O.W
.O
FF
SE
T 3
9.4
2
RETAINING WALL
2:1
EL
.12
08
.14
OF
FS
ET
53.8
7
EL
.12
10
.57
3:1
OF
FS
ET
-52.6
9
EL
.11
94
.86
PR
ES
. R
.O.W
.O
FF
SE
T -
88
.47
0
1
1
1
1
118
1190
200
1210
220
230
240
OF
FS
ET
37.5
0
EL
.11
89
.61
F
G E
L. 1190.3
9
1:1
TE
MP
OR
AR
Y SL
OPE
CLAY (A. SOIL MATERIAL)
TOP (A. SOIL MATERIAL) SOIL
A. SOIL MATERIAL
SOIL MATERIAL IS MATERIAL THAT IS PREDOMINANTLY MADE UP OF NATURALLY
OCCURRING MINERAL PARTICLES WHICH ARE FAIRLY READILY SEPARATED INTO
RELATIVELY SMALL PIECES, AND IN WHICH THE MASS MAY CONTAIN AIR, OR
ORGANIC MATERIALS. THIS MATERIAL MAY CONTAIN ROCK PIECES IN THE FORM
OF DISCONNECTED SLABS, LENSES, OR BOULDERS OF LESS THAN APPROXIMATELY
0.5 CUBIC YARDS. THE N SOIL GROUPS CONSIST OF CLAY, SILT, SAND,
GRAVEL, COBBLES, BOULDERS (LESS THAN 0.5 CUBIC YARD VOLUME) OR A
COMBINATION OF ANY OF THE CONSTITUENTS. FOR CONSTRUCTION PURPOSES,
THIS MATERIAL WOULD TYPICALLY BE CONSIDERED TO BE EXCAVATABLE BY
CONVENTIONAL EXCAVATION MACHINERY SUCH AS PANS, TRACK HOES, OR FRONT
END EXCAVATORS/LOADERS. THIS MATERIAL WOULD HAVE A SHRINK FACTOR AS
GIVEN IN THE SHRINK FACTORS SHOWN IN SECTION 2-145.10 OF THE DESIGN
GUIDELINES OR AS RECOMMENDED BY THE GEOTECHNICAL ENGINEERING SECTION
OF THE MATERIALS AND TESTS DIVISION
4-203.02
.
MAI
TE
NN
ES
SE
E D
.O.T
.
DE
SIG
N D
IV
IS
IO
N
S
NA
P P
T
FIL
E N
O.
S
NA
P P
T
TYPE YEAR PROJECT NO.SHEET
NO.
8/2
8/2
01
3
N:\G
eotech\F
iles\R
egion 1\78-S
evier\F
Y2012\7809312\cadd files\S
R71_(7809312).dgn
SEALED BY
+ .000177 5
WALL HEIGHT
TYPICAL SECTION REPRESENTATIVE OF
APPROXIMATE STATION 177+00 TO STATION 181+50
EASEMENT NECESSARY FOR CONSTRUCTION OF STANDARD
(CAST-IN-PLACE SEMI-CANTILEVER OR MSE)
RETAINING WALLS
WITHOUT SHORING
PROPOSED R.O.W. FOR CONSTRUCTION OF RETAINING WALL
IF USING SHEET PILES, OR FOR SOIL NAIL WALL
NOTE: SHRINK FACTOR OF 5 PERCENT RECOMMENDED BY
THE GEOTECHNICAL ENGINEERING SECTION
+ .0000
00 1023040506070 10 20 30 40 50 60 70 80 90 100 1 0 1 0 1 0 1 0 1 01 2 3 4 580901001 01 01 01 01 0 12345
SEVIER COUNTY
1
1040
1050
1060
1070
080
OF
FS
ET
29.7
0
EL
.10
60
.07
2:1
PR
ES
. R
.O.W
.O
FF
SE
T 2
6.2
3
PR
OP
. R
.O.W
.O
FF
SE
T 3
0.0
0
F
G E
L. 1058.1
4
OF
FS
ET
-51.4
8
EL
.10
58
.67
19
MACON LANE
5’
5’
2’ RIP-RAP
GEOTEXTILE FABRIC TYPE IV (ITEM NO. 740-10.04)
TYPICAL SECTION REPRESENTATIVE OF
STATION 17+00 TO STATION 21+00
1
1040
1050
1060
1070
080
TE
NN
ES
SE
E D
.O.T
.
DE
SIG
N D
IV
IS
IO
N
S
NA
P P
T
FIL
E N
O.
S
NA
P P
T
TYPE YEAR PROJECT NO.SHEET
NO.
8/1
5/2
01
3
N:\G
eotech\F
iles\R
egion 1\78-S
evier\F
Y2012\7809312\cadd files\S
R71_(7809312).dgn
SEALED BY