HomeMy WebLinkAbout961605.tiff J.S. DEFARTMENT OF AGRICULTURE PAGE . Or
NATC;AL R!SOGRCES CONSERVATION SERVICE 06118196
BUILDING SITE DEVELOPMENT
• A Gasparovich
;The information in this report indicates the dominant soil condition but does not eliminate the need for onsite
investigation)
Nap symbol ; ;Shallow Dwellings ; Dwellings ; Small ; Local roads ; Lawns and
and soil name excavations ; without with ; commercial ; and streets ; landscaping
basements ; basements ; buildings
Olney ,Severe: 'Slight ;Slight ;Slight ;Slight ;Moderate:
; cutbanRs cave ; droughty
961605
U.S. DEPARTMENT OF AGRiCULT.URE ?AGE c 0 2
NATURAL ?ESCURCES CONSERVATION SERVICE 061 86.6
BUILDING SITE DEVELOPMENT
Endnote -- BUILDING SITE DEVELOPMENT
This report shows the degree and kind of soil limitations tha: affect shallow excavations, dwellings with and without
basements, small commercial buildings, local roads and streets, and lawns and landscaping. The limitations are
"Slight", "Moderate", or "Severe". The limitations are considered "Slight" if soil properties and site features are
generally favorable for the indicated use and limitaions are minor and easily overcome; "Moderate" if soil properties
or site features are not favorable for the indicated use and special planning, design, or maintenance is needed to
overcome or minimize the limitations; and "Severe" if soil properties or site features are so unfavorable or so
difficult to overcome that special design, significant increases in construction costs, and possibly increased
maintenance are required. Special feasibility studies may be required where the soil limitations are severe.
SHALLOW EXCAVA:IONS are trenches or holes dug to a maximum deptn of 5 or 6 feet for basements, graves, utility lines,
open ditches, and other purposes. The ratings are based on soil properties, site features, and observed performance of
the soils. The ease of digging, filling, and compacting is affected by the deptn to bedrock, a cemented pan, or a very
firm dense layer; stone content; soli texture; and slope. :he time of the year that excavations can be made is
affected by the depth to a seasonal high water table and the susceptibility of the soil to flooding. The resistance of
the excavation walls or bands to sioughing or caving is affected by soil texture and the depth to the water table.
DWELLINGS AND SMALL COMMERCIAL BUILDINGS are structures built on shallow foundations on undisturbed soil. The load
limit `_s the same as that for singe-family dwellings no higher than three stories. Ratings are made for small
commercial buildings without basements, for dwellings with basements, and for dwellings without basements. The ravings
are based on soil_ properties, site features, and observed performance of the soils. A high water table, depth to bedrock
or to a cemented pan, large stones, slope, and flooding affect the ease of excavation and construction. Landscaping
and '-railing that require cuts and fills of tore than b or 6 feet are not considered.
LOCAL RRCADS AND STREETS nave an all-weather surface and carry automob__e and light truck traffic all year. They
have a subgrade of cut or fill soil material, a base of gravel, crushed rock, or stabilized soil material, and a
flexible or rigid surface. Cuts and fills are generally properties, site features, and observed performance or the
soils. Depth to bedrock or to a cemented pan, a high water table, flooding, large stones, and slope affect the ease of
excavating and grading. Soil strength as inferred from the engineering classification of the soil), shrink-swell
potential, frost action potential, and depth to a high water table affect the traffic-supporting capacity.
LAWNS AND LANDSCAPING require soils on which turf and ornamental trees and shrubs can be established and
maintained. The ratings are based on soil properties, site features, and observed performance of the soils. Soil
reaction, a high water table, depth to bedrock or to a cemented pan, the available water capacity in the upper 40
inches, and the content of salts, sodium, and suifidic materials affect plant growth. flooding, wetness, slope,
stoniness, and the amount of sand, clay, or organic matter in the surfve layer affect trafficability after vegetation
is established.
961€P5
J.S. ":PAR_MLN' OF AGR:CULI iE
AGE
NATURAL ?ESO'URRZES CGNSEEVVATICA SERVICE 06/18/96
ENGINEERING INDEX PROPERTIES
A Gasparovich
Classification ; Fragments Percentage passing ; ;
Map symbol Depth USDA texture _-.._...____..-___...-___... ____1__„ _-_.-_.. .. sieve number-- ;Liquid; ?las-
and sari name ; ; ; ; >10 ; 3-10 __i iimit;ticity
Unified ; AASHTO ;inches;inches; 4 ; 10 ; 40 200 ; ;index
I , I ,
In ; ; ; Pct Pct ; ; ; ; Pct
I I I
1 I S { I I t
44: I ; I ; I ; I I F
Olney ; 0-10 ;Loamy sand ISM, SP-SN ;A-2 ; 0 ; 0 ;95-100;90-100;50-75 ;10-30 ; 15-20; NP-5
10-20 ;Sandy clay ;SC, CL, A-f, A-4 ; 0 0 ;95-100;90-100;80-100;40-55 ; 25-35; 5-15
loam, sandy ; SC-SM, CL-NL1 i i ,
loam ; ; I ; I s
20-25 Sandy loam, SC, SC-SK, ;A-4, A-2 ; 0 ; 0 ;95-100;95-100;60-90 ;30-55 ; 25-30; 5-10
sandy clay CL, CL-ML ; i s i I i ;
loam, fine ; 1 ,
sandy loam ; ; i i , , , i
25-60 Fine sandy ;SM, SC-SK ;A-2 ; 0 0 ;95-100;95-100;60-85 ;30-50 ; 20-25; NP-5
loam, loamy ; , , ;
fine sand, ;
sandy loam •
I 1 I 1
---- '-----_,-. ..----'--. ...---- -' _.___;.. ..----;_. , ._.__..I__. I ,._ __......--'----- .�_----J...-----
961.C5
: 'A?IXE : OF AGRICiL:U E PAGE 2 2
NATURAL RESOURCES CONSERVATful SERVICE 06/18/96
ENGINEERING INDEX PROPERTIES
Eadnote -- ENGINEERING INDEX PROPERTIES
This repert gives estimates of the engineering classification and of the range of index properties for the
major layers of each soil in the survey area. Most soils have layers of contrasting properties within the upper
5 or 6 feet.
DEPTH to the upper and lower boundaries of each layer is indicated. The range in depth and information on other
properties of each layer are given in the published Soil Survey for each soil series under "Soil Series and Their
Morphology."
TEXTURE is given in the standard terms used by the U.S. Department of Agriculture. These terms are defined
according to percentages of sand, silt, and clay in the fraction of the soil that is less than 2 millimeters in
diameter. "Loam," for example, is soil that is 7 to 27 percent clay, 28 to 50 percent silt, and less than 52
percent sand. if the content of particles coarser than sand is as much as about 15 percent, an appropriate modifier is
added, for example, "gravelly." Textural terms are defined in the Soil Survey Glossary.
Classification of the soils is determined according to the Unified soil classification system and the system
adopted by the American Association of State Highway and Transportation Officials,
The UNIFIED system classifies soils according to properties that affect their use as construction material. Soils are
classified according to grain-size distribution of the fraction less than 3 inches in diameter and according to
plasticity index, liquid limit, and organic matter content. Sandy and gravelly soils are identified as GW, GP, GM, GC,
SW, SP, SM, and SC; silty and clayey soils as ML, CL, OL, MN. CR, and OH; and highly organic soils as PT. Soils
exhikiting engineering properties of two groups can have a dual classification, for example, CL-ML.
The AASHTO system classifies soils according to those properties that affect roadway construction and maintenance.
In this system, the fraction of a mineral soil that is less than 3 inches in diameter is classified in one of seven
groups from A-I through A-7 on the basis of grain-size distribution, liquid limit, and plasticity index. Soils in
croup A-i are coarse grained and low in content of fines (silt and clay). At the other extreme, soils in group A-7
ire fine grained. Highly organic soils are classified in group A-3 on the basis of visual inspection. If laboratory
late are available, the A-i, A-2, and A-7 groups are further classified as A-1-a, A-1-b, A-2-4, A-2-5, A-2-6, A-2-7, A-7-
i, or A-7-6. As an additional refinement, the suitability of a soil as subgrade material can be indicated by a group
index number. Group index numbers range from 0 for the best subgrade material to 20 or higher for the poorest.
sock FRAGMENTS larger than 3 inches in diameter are indicated as a percentage of the total soli on a dry-weight
)asis, The percentages are estimates determined mainly by converting volume percentage in the field to weight
,ercentage.
'ercentage of soil particles passing designated sieves (PERCENTAGE PASSING SIEVE NUMEER--?is the percentage of the
oil fraction less than 3 inches in diameter based an an ovendry weight. The sieves, numbers 4, 10, 40, and 200 (USA
standard Series), have openings of 4.76, 2.00, 0.420, and 0.074 millimeters, respectively, Estimates are based on
.aboratory tests of soils sampled in the survey area and in nearby areas and on estimates made in the field.
IQUID LIMIT and PLASTICITY INDEX (Atterberg limits) indicate the plasticity characteristics of a soil. The
stimates are based on test data from the survey area or from nearby areas and on field examination. The estimates
grain-size distribution, liquid limit, and plasticity index are generally rounded to the nearest 5 percent. Thus,
f the ranges of gradation and Atterberg limits extend a marginal amount (1 or 2 percentage points) across
lassification boundaries, the classification in the marginal zone is omitted in this report,
961695
NOI7 ,iNICAu SOILS H':RIPTI 4 RETORT
A Gasparovich
Map Soli name and description
Sy
44 ; Olney loamy sand, 1 to 3 percent slopes
The Olney soil is a deep, well drained soil. It is
formed on smooth plains in mixed outwash deposits. The
surface is a loamy sand. The subsoil is a sandy clay
loam. The underlying material is a calcareous fine
sandy loam. The soils have moderate permeability.
Their available water holding capacity is moderate.
Roots penetrate to 60 inches or more. Runoff is slow
and the erosion hazard due to wind is high,
9616W.'45
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