SW6221101_Soils/Geotechnical Report_20221129

1 2 3 4 5 6 7 8 9 10
GENERAL NOTES:
1. FOR LOCATIONS OF SOIL TEST BORINGS, REFER TO PLATE B-100.
US Army Corps
G of Engineers °
2. FOR SOIL TEST BORING LOGS, REFER TO PLATES B-300 THROUGH B-307.
UNIFIED SOIL CLASSIFICATION SYSTEM 5. SOILS ARE CLASSIFIED IN ACCORDANCE WITH THE UNIFIED SOIL Q
CLASSIFICATION SYSTEM, ASTM D 2487, CLASSIFICATION OF SOILS FOR ❑
Soils are visually classified by the United Soil Classification System (USCS) on the boring logs ENGINEERING PURPOSES.
presented in this report. Grain size analysis and Atterberg limits tests are often performed on
selected samples to aid In classification. The classification system IS briefly outlined on this chart. 6. GROUNDWATER DEPTHS OR ELEVATIONS SHOWN ON THE SOIL TEST BORING LOGS
Fora more detailed description Of the system, see "The Unified SOII Classification System" Corps Of REPRESENT GROUNDWATER ENCOUNTERED ON THE DATES SHOWN. ABSENCE OF
GROUNDWATER DATA IMPLIES THAT NO DATA IS AVAILABLE, BUT DOES NOT
F Engineers, US Army Technical Memorandum No. 3-357 (Revised April 1960) or ASTM Designation: NECESSARILY MEAN THAT GROUNDWATER WILL NOT BE ENCOUNTERED. GROUNDWATER
D2487-66T. LEVELS WILL FLUCTUATE WITH SEASONAL AND CLIMATIC VARIATIONS, VARIATIONS
IN SUBSURFACE SOIL CONDITIONS, AND CONSTRUCTION OPERATIONS. THEREFORE,
MAJOR DIVISIONS GROUP TYPICAL NAMES GROUNDWATER CONDITIONS IN THE FUTURE, AND AT OTHER LOCATIONS ON THE
SYMBOL SITE, MAY DIFFER FROM THE CONDITIONS ENCOUNTERED AT THE BORING
Well graded gravels, gravel —sand mixtures, LOCATIONS ON THE DATES THE BORINGS WERE PERFORMED.
; CLEAN GRAVELS GW or sand —gravel —cobble mixtures.
o C a)
� N .N (Less than 5% passes NO. 200 sieve) GP Poorly graded gravels, gravel —sand mixtures, 7. WHILE THE SOIL TEST BORING LOGS ARE REPRESENTATIVE OF SUBSURFACE °
J j L ° o or sand —gravel —cobble mixtures. CONDITIONS AT THEIR RESPECTIVE LOCATIONS AND FOR THEIR RESPECTIVE
C] 1 ° o z GRAVELS WITH Limits lot below the "A" line & VERTICAL REACHES, LOCAL MINOR VARIATIONS IN CHARACTERISTICS OF THE w
O v o FINES hatched Zone on plasticity chart GM Silty gravels, gravel —sand —silt mixtures. ❑
o p m P Y SUBSURFACE MATERIALS ARE ANTICIPATED AND, IF ENCOUNTERED, SUCH
° (More than 12%
E Z N o. passes No. 200 Limits plot above the "A" line & VARIATIONS WILL NOT BE CONSIDERED AS DIFFERING MATERIALLY FROM THE
�, GC Clayey gravels, gravel —sand —clay mixtures.
Q sieve) hatched zone on plasticity chart DESCRIPTIONS SHOWN ON THE BORING LOGS.
C.� D
Q
CLEAN SANDS SIN Well graded sands, gravelly sands.
o 8. "N," STANDARD PENETRATION RESISTANCE, IS THE NUMBER OF BLOWS
0 R .2 REQUIRED TO DRIVE A STANDARD 1 3/8-INCH ID SPITSPOON SAMPLER OVER THE o - .. N
(Less than 5% passes No. 200 sieve) z
cr u, Lo v SP Poorly graded sands, gravelly sands. zo o M
DEPTH INTERVAL OF 6 TO 18 INCHES USING A 140 POUND AUTOMATIC TRIP w O � M
0 ¢ 0 Z Limits lot below the ''A" fine & HAMMER DROPPED A DISTANCE OF 30 INCHES, IN SUBSTANTIAL ACCORDANCE WITH o o � � < �
N v 0-
SANDS WITH FINES hatched Zone on plasticity Chart SM Silty sands, sand —silt mixtures. ASTM D 1586. THE BORINGS PERFORMED BY THE SAVANNAH DISTRICT USED A wN "" ~ 04
N z
L o {More than 12� P Y o o z 0
00 v passes No. 200 y CATHEAD AND PULLEY TO RAISE THE HAMMER AND A 3 1/4 INCH CONTINOUS m
CL sieve) Limits plot above the A line & SC Clayey sands, sand —clay mixtures. w_j
hatched zone on plasticity chart y y y SPIRAL AUGER TO ADVANCE THE BORINGS. THE DRILL RIG USED WAS A CME-550x. 20
D o� SILTS OF LOW PLASTICITY Inorganic silts, non —plastic or slightly m m� w�
N c > M L 10. COORDINATES SHOWN ON THE BORING LOGS REFERENCE THE STATE PLANE U) MU) ❑ 0 E m
o a. � 0 (Liquid Limit Less Than 50) plastic. o 1- m � ❑ 1- w o
Z o- > No c SILTS OF HIGH PLASTICITY NORTH AMERICAN DATUM 1983 (NAD83), NORTH CAROLINA 3200 AND ELEVATIONS o o o _ ❑
E Inorganic silts, micaceous or diatomaceous Q 0 w m w
Q 'us � 2 4 N a M H g REFERENCE THE NAVD88. w�� _� D `�' N z
J o --� (Liquid Limit More Than 50) silty soils, elastic silts. ❑ J ❑ o L) J U) Y co Q
I o E N o� c CLAYS OF LOW PLASTICITY Inorganic clays of low to medium plasticity, gravelly o
w o a �^ (Liquid Limit Less Than 50) CL clays, sandy clays, silty clays, lean clays.
a1 �:"It � Q
z Z E��,z o o � CLAYS OF HIGH PLASTICITY w w J
�. ^' a CH Inorganic clays of high plasticity, fat clays, z � D a z o
� (Liquid Limit More Than 50) sandy clays of high plasticity. z w Q o<oJtia2
w F-> (-) U
6 co n U
Q C�� x
NOTE: ��z2 ~ �~U� 2
a O� aD=M�a
(A z O N(n0F 3 n
Coarse grained soils with between 5% & 12% passing the No. 200 sieve and fine grained soils with a °"z
z -
c Atterberg limits plotting in the hatched zone on the plasticity chart shall have dual symbol. In >- � o
Arizona, local streams contain sand, gravel & cobble type material, which are locally known as SGC a co
or riverrun material. The USCS is not used to divide and symbolize this material. X
DEFINITIONS OF SOIL FRACTIONS
PLASTICITY CHART
SOIL COMPONENT PARTICLE SIZE RANGE60 x
w
z
Q z
50 ....... ....... ....... ....... ...... ...... ....... ....... ... ....... ....... Cobbles Above 3 in. z Cl)
B CH or OHS Gravel 3 in. to No. 4 sieve z Q ~
X a Q O
Ld 40 ....... ....... ....... ....... ...... ...... ....... .. .-------------------- Coarse gravel 3 in. to 3/4 in. N z U z
zFine gravel 3/4 in. to No. 4 sieve o
....... ....... ....... ....... ...... ..... ..... .... ......-...................Sand z a w "� Q
30 - --:-- - - -:----No. 4 to No. 200 - J
CL ©r OL Coarse No. 4 to No. 10 _j a ~ ~
¢QN 0w U
U 20 ....... ....... ....... ....... .. ...... ....... ....... ......--------------- Medium No. 10 to No. 40 z c� J Q
,�
MH ©r OHS Fine No. 40 to No. 200 U
OU O
U, 10 ....... ................... ....................................................------- ....... Fines (silt & clay) Below No. 200 sieve "~
ML oir OL Clay Smaller than 2 microns
0 1 Colloid Smaller than 5 microns LU
LU
0 10 20 30 40 50 60 70 80 90 100 110 0-
LIQUID LIMIT (LL) 0�
A Q
LL
SHEET ID 0
W
B-001 Z)
co