HomeMy WebLinkAboutSoil test Headquarters: IV C , At ENGINEERING Mailing.
11345 U.S. Highway 1 P.O. Box 78-1377
Sebastian, FL.32958 &W AND TESTING Phone:Orlando: 772 589 0712
723 Progress Way C.A.#5693
Sanford, FL. 32771 KSMengineering.net
August 24, 2020 RF
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Tony Patton
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Patton Construction
845 37th Avenue
Vero Beach, Florida 32960
Re: 10527 Oakbridge Court
Fort Pierce, Florida
KSM Project#: 203962-b
Dear Mr. Patton:
As requested, KSM Engineering & Testing has performed a subsurface investigation at
the referenced site. Presentation of the data gathered during the investigation, together
with our geotechnical related opinions, are included in this report.
A. Site Description:
At the time of drilling, the site was fairly flat with light surface vegetation (grass) and few
trees.
B. Project Description:
A one-story single-family residence is planned to be constructed on the site. Loads
from the structure will be transferred to the ground by conventional shallow footings.
We estimate the maximum loads will be less than 2,500 pounds per linear foot along the
wall foundation.
Some additional site fill will be required to reach the desired grades.
- Proudly Serving Florida since 1990
Headquarters: IV C! 'L At ENGINEERING P.O. Box Mailing:
11345 U.S. Highway 1 78-1377
Sebastian, FL.32958 LVL AND TESTING Phone Sebastian,
Orlando: 772-589 0712
723 Progress Way C.A.#5693
Sanford, FL. 32771 KSMengineering.net
10527 Oakbridge Court -2- August 24, 2020
Fort Pierce, Florida
C. The scope of our study consisted of the following:
1. Performed Standard Penetration Test Borings in the proposed construction area
to estimate the subsoil relative density.
2. Measured the groundwater level at each boring.
3. Evaluated the existing soil conditions with respect to the proposed construction
and provided recommendations for site preparation and foundation design.
4.. Prepared this report to document our findings.
D. Site Investigation:
The site investigation program consisted of performing four (4) Standard Penetration
Test borings (SPT), in the proposed construction area. The SPT borings were
terminated at depths of 10 to 14 feet below grade. The locations of the borings are
indicated on the attached boring logs.
The SPT borings were completed in accordance with procedures described in ASTM D-
1586. A standard 1.5 inch I.D., 2 inch O.D. split-spoon sampler is driven into the soi! by
successive blows of a 140 pound hammer freely falling 30 inches. The number of blows
required to drive the sampler 1 foot, after seating 6 in., is designated the Penetration
Resistance,.or "N" value. At regular intervals the sampler is extracted from the ground
and opened to allow visual examination and classification of the retained soil sample.
Also, the groundwater table was allowed to stabilize and the depth of the groundwater
elevation recorded from existing grade.
The records of the soils encountered, the penetration resistances and groundwater level
are shown on the attached logs.
Proudly Serving Florida since 1990
Headquarters: IV C! 'L t .ENGINEERING P.O. Box Mailing:
11345 U.S. Highway 1 78-1377
Sebastian FL.32958 Sebastian FL.32978
Orlando: LVL AND TESTING Phone:772-589-0712
723 Progress Way C.A.#5693
Sanford, FL. 32771 KSMengineering.net
10527 Oakbridge Court -3- August 24, 2020
Fort Pierce, Florida
E. Engineering Evaluation and Conclusions:
Based on the information obtained from .this site investigation, we are pleased to offer
the following evaluation:
The boring logs indicate the subsurface conditions to be fairly uniform across the site.
The soils consist mostly of fine-grained sand, slightly silty or slightly clayed sand, and
clayed sand. "N" values recorded during the boring operation indicate the soil density is .
generally medium dense to a depth of approximately 10 feet below existing grade and
then the soils became loose. Please refer to the soil boring logs for specific information
relative to the soil description.
Based on the existing soil conditions, the proposed structure can be supported on a
shallow foundation system provided that the site is properly prepared.
The following sections provide recommendations for the site preparation and foundation
design.
F. Site Preparation:
The proposed building area and areas to be paved, plus a minimum margin of five feet
beyond the proposed construction shall be stripped and grubbed of surface debris,
including vegetation, roots and organic matter. Stumps shall be removed entirely. The
building area should be graded level and proofrolled. Any soft yielding areas shall be
excavated and replaced with clean compacted fill. Sufficient passes should be made
during compaction operations to produce a density no less than 95 percent of its
modified dry Proctor value (ASTM D 1557) to a depth of two feet.
After the exposed surface has been proofrolled, the building and pavement areas may
be filled to the desired grades. The fill material shall consist of clean granular sand
containing less than 10% material passing the U.S. Standard No. 200 mesh sieve.
Place structural fill in loose layers of 12 inches in thickness and compact each lift to at
least 95 percent of its modified dry Proctor value.
After excavating for the footings, the disturbed footing subgrade should be recompacted
to 95 percent (minimum) of its modified dry Proctor value. This can be best achieved by
making several passes with a relatively light-weight walk-behind vibratory sled or roller.
Proudly Serving Florida since 1990
Headquarters: Mailing:
11345 U.S. Highway IV C! 'L At ENGINEERING P.O. Box78-1377
Sebastian, FL. 32958 AVL AND TESTING Phone:
Orlando: 772 589-0712
723 Progress Way C.A.#5693
Sanford, FL. 32771 KSMengineering.net
10527 Oakbridge Court -4- August 24, 2020
Fort Pierce, Florida
G. Foundation:
Provided that our recommendations for site preparation are followed, the proposed
structure may be supported on conventional concrete, steel reinforced footings
designed for an allowable soil bearing pressure of 2,500 pounds per square foot, or
less.
With the foundation properly designed and the site properly prepared, we anticipate
total settlements less than 3/ of an inch and differential settlement of less than.% of an
inch. The majority of the settlement should occur during construction.
H. Floor Slabs:
A conventional slab-on-grade can be used in the "at grade" portion of the building. We
recommend the disturbed subgrade below the floor slab be re-compacted to 95 percent
of the modified Proctor maximum dry density (ASTM D 1557) prior to placement of the
concrete. An estimated modulus of subgrade reaction of 150 pounds per cubic inch
(pci) can be used for design of the slab-on-grade. We recommend that control joints be
incorporated in the slab at frequent intervals to control shrinkage cracks.
A moisture barrier is recommended beneath the floor slab to prevent moisture migration
from the underlying soil resulting in dampness of the slab.
I. Pool (If Constructed):
Based on the existing soil conditions, a pool can be designed and constructed using an
allowable soil bearing pressure of 2,500 pounds per square foot.
When excavating the pool, if any organic soil or soft material is encountered, these
materials/soils should be removed and replaced with 3/" stones so the subgrade
becomes firm below the pool bottom.
Backfill material behind the pool shell shall consist of clean granular sand with less than
10 percent "fines" passing the U.S. No. 200 sieve. Place backfill material in loose lifts of
12 inches in thickness and compact each lift to no less than 95 percent of its modified
dry Proctor value (ASTM D 1557).
Proudly Serving Florida since 1990
Headquarters: IV C L At ENGINEERING Mailing:
11345 U.S. Highway 1 P.O. Box 78-1377
Orlando:Sebastian, FL.32958 &VA AND TESTING Phone:Sebastian,772 589 0712
723 Progress Way C.A.#5693
Sanford, FL. 32771 KSMengineering.net
10527 Oakbridge Court -5- August 24, 2020
Fort Pierce, Florida
J. Closure:
This report has been prepared in accordance with generally accepted soil and
foundation engineering practices based on the results of the test borings and the
assumed loading conditions. No warranties, either expressed or implied, are intended
or made. This report does not reflect any variations which may occur between the
borings. If variations appear evident during the course of construction, it would be
necessary to re-evaluate the recommendations of this project.
Environmental conditions, wetland delineation, water quality, and municipal
requirements are not a part of this report.
We are pleased to be of assistance to you on this phase of your project. When we may
be of further service to .you or should you have any questions, please feel free to
contact us.
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E-mail to: apatton@pattonconst.com
Proudly Serving Florida since 1990
KSM Engineering&Testing BORING NUMBER B-1
KSM P.O.Box 78-1377
Sebastian, FL 32978 PAGE 1 OF 1
Tel:(772)-589-0712
Fax:(772)-589-6469
CLIENT Patton Construction PROJECT NAME 10527 Oakbridge Court
PROJECT NUMBER 203962-b PROJECT LOCATION Fort Pierce, Florida
DATE STARTED 8/21/20 COMPLETED 8/21/20 GROUND ELEVATION HOLE SIZE inches
DRILLING CONTRACTOR GROUND WATER LEVELS:
DRILLING METHOD Split Spoon Sample �Z AT TIME OF DRILLING 3.08 ft
LOGGED BY MS/MH CHECKED BY JEK AT END OF DRILLING ---
NOTES See Attached Location Plan AFTER DRILLING -
W o A SPT N VALUE
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<O MATERIAL DESCRIPTION >C7 O ¢ W w z a �—�
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C�7 <z W U z 0 W El CONTENT(%)❑
0 20 40 60 80
Gray Sand with Some Roots
Dark Brown Sand SS 5-6-7
Gray Sand,Slightly Clayed (13)
GraySand,Slightly Silt
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9 y y SS 10-10-11
(21) ...... .......:.......:.......:.......
5
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Brownish Gray Sand,Slightly Clayed 7-7-7
SS
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SS 5-6-7
(13)
... ...................................
10 SS 4-4-4
(8) :.......:.......:.......:.......
SS 2-1-2
a. (3) :.......:.......:.......
:.......
Dark Brown Clayed Sand
N Light GrayClayedSand SS 2-2-2 :.....••••••••••:•••••••••••••••
(4)
Bottom of borehole at 14.0 feet.
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KSM Engineering&Testing BORING NUMBER B-2
KSM P.O. Box 78 1377
Sebastian,FL 32978 PAGE 1 OF 1
Tel:(772)-589-0712
Fax:(772)-589-6469
CLIENT Patton Construction PROJECT NAME 10527 Oakbridge Court
PROJECT NUMBER 203962-b PROJECT LOCATION Fort Pierce, Florida
DATE STARTED 8/21/20 COMPLETED 8/21/20 GROUND ELEVATION HOLE SIZE inches
DRILLING CONTRACTOR GROUND WATER LEVELS:
DRILLING METHOD Split Spoon Sample AT TIME OF DRILLING 3.00 ft
LOGGED BY MS/MH CHECKED BY JEK AT END OF DRILLING --
NOTES See Attached Location Plan AFTER DRILLING ---
w o z ♦SPT N VALUE
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0 20 40 60 80
Gray Sand with Some Roots
Dark Brown Sand SS 5-5-7
Gray Sand,Slightly Clayed
(12)
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Gray Sand,Slightly Silty 7-8-10
SS
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SS 6-6-7
Brownish Gray Sand,Slightly Clayed
(13) :.......:.......:.......:.......
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(10) .. ...:.......:.......:.......:.......
5-5 4 :.......:.......:.......:.......
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Bottom of borehole at 10.0 feet.
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KSM Engineering&Testing BORING NUMBER B-3
KSM P.O.Box 78-1377
Sebastian, FL 32978 PAGE 1 OF 1
Tel:(772)-589-0712
Fax:(772)-589-6469
CLIENT Patton Construction PROJECT NAME 10527 Oakbridge Court
PROJECT NUMBER 203962-b PROJECT LOCATION Fort Pierce,Florida
DATE STARTED 8/21/20 COMPLETED 8/21/20 GROUND ELEVATION HOLE SIZE inches
DRILLING CONTRACTOR GROUND WATER LEVELS:
DRILLING METHOD Split Spoon Sample �Z AT TIME OF DRILLING 3.17 ft
LOGGED BY MS/MH CHECKED BY JEK AT END OF DRILLING ---
NOTES See Attached Location Plan AFTER DRILLING ---
w o A SPT N VALUE A
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Gray Sand with Some Roots
Dark Brown Sand
SS 6-5-7
Gray Sand,Slightly Clayed SS 9-10-11
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(21) ..............:.......:.......:....
5 Gray Sand,Slightly Silty
..... ..............................
Brownish Gray Sand,Slightly Clayed SS 8-7-7
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SS 6-7-6
(13)
10 SS 5-4-4
(8) .. ...:.......:..............:.......
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KSM Engineering&Testing BORING NUMBER B-4
KSM P.O.Box 78-1377
PAGE 1 OF 1
Sebastian, FL 32978
Tel:(772)-589-0712
Fax:(772)-589-6469
CLIENT Patton Construction PROJECT NAME 10527 Oakbridge Court
PROJECT NUMBER 203962-b PROJECT LOCATION Fort Pierce,Florida
DATE STARTED 8/21/20 COMPLETED 8/21/20 GROUND ELEVATION HOLE SIZE inches
DRILLING CONTRACTOR GROUND WATER LEVELS:
DRILLING METHOD Split Spoon Sample Q AT TIME OF DRILLING 3.08 ft
LOGGED BY MS/MH CHECKED BY JEK AT END OF DRILLING --
NOTES See Attached Location Plan AFTER DRILLING ---
W o ♦SPT N VALUE
U _ (n,W w 20 40 60 80
a =O ~m wo 0z—j H� ~� PL MC LL
W v ¢O MATERIAL DESCRIPTION >C1 O Q W w z Q I0 �
o a 5 O- m O> Y" 20 40 60 80
C7 <z W U? p W El CONTENT(%)El
0 1 20 40 60 80
Gray Sand with Some Roots
Dark Brown Sand 6-7-9
SS
(16) ..... .:.......:.......:.......:.......
Gray Sand,Slightly Clayed '
Gray Sand,Slightly Silty SS 6-6-5
5
.............................
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Brownish Gray Sand,Slightly Clayed SS 7-7-6
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Bottom of borehole at 10.0 feet.
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B-�
B-1 B-2
- - LOCATION OF SOIL BORINGS
PROJECT: 10527 Oakbridge Court,Fort Pierce,Florida
SHEET IOF 1 ENGI.NEERIN� DRAWN BY: J.L.
PERMIT#: DESIGNED BY: J.K.
PROJECT#: 203962-b t;P-,LVL AND TESTING- SDATE: 202008
CALE: NONE 25
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