HomeMy WebLinkAbout961795.tiff U.S. LEPART1ENT OF AG1liCULTvaE rR.:E I :i
NATURAL RESOURCES CCNSERVAT:DN SERVICE 36/18156
BUILDING SITE DEVELOPMENT
R. Jones
;The information in this report indicates the dominant soli condition but does not eliminate the need for onsite
investigations
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Map symbol ; Shallow ; Dwellings , Dwellings ; Small ; Local roads ; Lawns and
and sc:l aame ; excavations ; without with ; commercial ; and streets ; landscaping
basements ; basements ; buildings
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I..._ — �— -I-- - -....
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I44: �. I `
Olney ;Severe: ;Slight ;Slight ;Slight ;Slight ;Moderate:
cutbants cave I ; ; droughty
........ ......I.--- ----...----..._ _....---- - - - ---
961795
1.S. DE?ARR, MENT OF AGR: L"C E
NATURAL FEEiRCES CONSERVATION SERVICE &6i16;96
BUILDING SITE DEVELOPMENT
Endncte -- BUILDiNG SITE DEVELOPMENT
This report shows the degree and kind of soil limitations that 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 iimitaions are minor and easily overcome; "Moderate" ii soil properties
or site features are not favorable for the indicated use and special planning, design, or maintenance is needed to
overcome or minimise the limitations; and "Severe" if soil properties or site features are so unfavorable or so
dfficui.t to overcome that special design, significant increases in construction costs, and possibly increased
maintenance are required. Special feasibility studies Ray be required where the soil limitations are severe.
SHALLOW EXCAVATIGNS are trenches or holes dug to a maximum depth 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 depth to bedrock, a cemented pan, or a very
firm dense layer; stone content; soil texture; and slope. The 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 lands to sloughing or caving is affected by soil texture and the depth to the water table.
DWELLINGS AND SHALL COMMEECIAI BUILDINGS are structures built on shallow foundations on undisturbed soil. The load
limit is t::e same as that for single-family dwellings no higher than three stories. Ratings are made for small
commercial buldings without basements, for dwellings with basements, and for dwellings without basements. The ratings
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
a-' •rading that require cuts and fills of more than 5 or 6 feet are not considered.
LOCAL ROADS AND STREETS have an all-weather surface and carry automobile 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 of 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 soill, shank-swell
potential, frost action potential, and depth to a high water table affect the traffic-supporting capacity.
LAWNS AND LANDSCAP_NG 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 amoemt of sand, clay, or organic matter in the surface layer affect trafficability after vegetation
is established.
961.995
L.V. DEPARTNFK :F a'..F.a: T7.:+E Pi-.GE _
NATURAL RESOURCES COtiSERVATIOA SERVICE 06/18/96
ENGINEERING INDEX PROPERTIES
I. Jones
; Classification ; Fragments Percentage passing
Map symbol ; Depth ; USDA texture ._._.. ... .. . .._____ ___.._. sieve number-- ;Liquid; Plas-
and soil name ; ; : )10 ,' 3-10 __._... .._.__...-..__.__.... .___.. iimit;ticity
Unified AASNTO ;inches:inches; 4 ; 10 ; 40 ; 200 ; ;index
In Pct Pct Pct
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44: ; I I t I 1
Olney ; 0-10 ;Loamy sand ;SN, SP-Si{ ;A-2 ; 0 0 ;9s-100;90-100;50-i5 ;10-30 ; 15-20; NP-5
10-20 ;Sandy clay ;SC, CL, ;A-6, A-4 ; 0 ; J ;95-100;90-100;80-100;40-55 ; 25-35; 5-15
loam, sandy ; SC-SK, CL-ML; ; , 1
loam I I I I I 1 I 1 I !
20-25 ;Sandy loam, :SC, SC-SK, ;A-4, A-2 ; 0 ; 0 ;95-100;95-100;60-90 ;30-55 25-30; 5-i0
sandy clay ; CL, CL-ML ; i
; loam, fine 1 ' ' '
sandy loam
25-60 ;Fine sandy ;SK, SC-S!4 ;A-2 ; 0 ; 0 ;95-100 95-100;60-85 ;30-50 ; 20-25 NP-5
; loam, loamy ; I
; fine sand, ; I I I I I I I '
; sandy loam ; I
! S 1 I I I
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961.'795
G.S. DEPARTMENT OF AGR CUL:IRE PAGE i OF 2
NATURAL RESOURCES CONSERVATION SERVICE 0611819f
ENGINEERING INDEX PROPERTIES
Endnote -- E?I1NEERING INDEX PROPERTIES
This report 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, SF, 51, and SC; silty and clayey soils as ML, CL, OL, MN, CH, and OH; and highly organic soils as PT. Soils
e'' "iting engineering properties of two groups can have a dual classification, for example, CL-ML.
The AASHTC• 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
group A-i are coarse grained and low in content of fines (silt and clay). At the other extreme, soils in group A-7
are fine grained. Highly organic soils are classified in group A-8 on the basis of visual inspection. If laboratory
data ate available, the A-1, A-2, and A-7 groups are further classified as A-I-a, A-I-b, A-2-4, A-2-5, A-2-6, A-2-7, A-7-
5, or A-7-b. 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 nigher for the poorest.
Rock FRAGMENTS larger than 3 inches in diameter ate indicated as a percentage of the total soil on a dry-weight
basis. The percentages are estimates determined mainly by converting volume percentage in the field to weight
percentage.
Percentage of soil particles passing designated sieves PERCENTAGE PASSING SIEVE NUMBER--Jis the percentage of the
soil fraction less than 3 inches in diameter based on 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
laboratory tests of soils sampled in the survey area and in nearby areas and on estimates made in the field.
LIQUID LIMIT and PLASTICITY INDEX (Atterberg limits) indicate the plasticity characteristics of a soil. The
estimates are based on test data from the survey area or from nearby areas and on field examination. The estimates
of grain-size distribution, liquid limit, and plasticity index are generally rounded to the nearest 5 percent. Thus,
if tre ranges of gradation and Atterberg limits extend a marginal amount (1 or 2 percentage points) across
classification boundaries, the classification in the marginal zone is omitted in this report.
961795
R. Jonas
Mar , Soil name and description
S. 1
44 ; 31ney loamy sand, i 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.
961.795
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