HomeMy WebLinkAboutSubsurface Investigationi
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'RECEIVED POLO—o0q /
MAY 10 2019 lJ 7
• KELLER, SCHLEICHER & MacWILLIAM ENGINEERING t inTEARNG, INC.
MARTIN (772) 337-7755 P.O. BOX 78-1377, SEBASTIAN, FL 32978-1377 st.$�EBA&TdN, (772) 589-0712
PALM BEACH (561) 845-7445 www.ksmengineering.net MELBOURNE (321) 768-8488
FAX (561) 845-8876 E-Mail: KSM@KSMENGINEERING.NET ST. LUCIE (772) 229-9093
C.A.: 5693 FAX (772) 589-6469
February 6, 2019
Paul J. Pane
TRM Construction Management
1512 SE Village Green Drive
Port St. Lucie, FL 34962
Re: Lot 25, Ocean Estates Drive
Avalon Beach
Fort Pierce, Florida
KSM Project #: 190527-b
Dear Mr. Pane:
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 surface vegetation.
B. Project Description:
A 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 3,000 pounds per linear foot along the
wall foundation.
Some additional site fill will be required to reach the desired grades.
Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366
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JML-97M
KELLER, SCHLEICHER & MacWILLIAM ENGINEERING AND TESTING, INC.
MARTIN (772) 337-7755 P.O. BOX 78-1377, SEBASTIAN FL 32978-1377 SEBASTIAN (772) 589-0712
PALM BEACH (561) 845-7445 www.ksmengineering.net MELBOURNE (321) 768-8488
FAX (561) 845-8876 E-Mail: KSM@KSMENGINEERING.NET ST. LUCIE (772) 229-9093
C.A.: 5693 FAX (772) 589-6469
Lot 25, Ocean Estates Drive -2- February 6, 2019
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 soil 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.
Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366
P
Tl C! 19
IIJAVA
KELLER, SCHLEICHER & MacWILLIAM ENGINEERING AND TESTING, INC.
MARTIN (772) 337-7755 P.O. BOX 78-1377, SEBASTIAN, FL 32978-1377 SEBASTIAN (772) 589-0712
PALM BEACH (561) 845-7445 www.ksmengineering.net MELBOURNE (321) 768-8488
FAX (561) 845-8876 E-Mail: KSM@KSMENGINEERING.NET ST. LUCIE (772) 229-9093
C.A.: 5693 FAX (772) 589-6469
Lot 25, Ocean Estates Drive -3- February 6, 2019
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 and some fine-grained sand that is slightly
silty. "N" values recorded during the boring operation indicate the soil density is
generally firm to medium dense. 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. 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. Any 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.
Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366
Tie C! 11
4%i_; PAvi
KELLER, SCHLEICHER & MacWILLIAM ENGINEERING AND TESTING, INC.
MARTIN (772) 337-7755 P.O. BOX 78-1377, SEBASTIAN, FL 32978-1377 SEBASTIAN (772) 589-0712
PALM BEACH (561) 845-7445 www.ksmengineering.net MELBOURNE (321) 768-8488
FAX (561) 845-8876 E-Mail: KSMQKSMENGINEERING.NET ST. LUCIE (772) 229-9093
C.A.: 5693 FAX (772) 589-6469
Lot 25, Ocean Estates Drive -4- February 6, 2019
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 expansion or
control joints be incorporated in the slab at frequent intervals to control settlement and
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.
Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366
e
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IJAVJL
KELLER, SCHLEICHER & MacWILLIAM ENGINEERING AND TESTING, INC.
MARTIN (772) 337-7755 P.O. BOX 78-1377, SEBASTIAN FL 32978-1377 SEBASTIAN (772) 589-0712
PALM BEACH (561) 845-7445 www.ksmengineering.net MELBOURNE (321) 768-8488
FAX (561) 845-8876 E-Mail: KSM@KSMENGINEERING.NET ST. LUCIE (772) 229-9093
C.A.: 5693 ' FAX (772) 589-6469
Lot 25, Ocean Estates Drive -5- February 6, 2019
Fort Pierce, Florida
I. 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 p1ffl;ydt o be of assistance to you on this phase of your project. When we may
be , ''u h ge�f ge to you or should you have any questions, please feel free to
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JEK/jt '
E-mail to: paul@trmcorpfl.com
Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366
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1
KSM Engineering & Testing
BORING NUMBER B-1
P.O. Box 78-1377
KS]�
1►�j Sebastian, FL 32978
PAGE 1 OF 1
Tel:(772)-589-0712
Fax: (772)-589-6469
CLIENT TRM Construction Management
PROJECT NAME Lot 25, Ocean Estates Drive
PROJECT NUMBER 190527-b
PROJECT LOCATION Avalon Beach, Fort Pierce, Florida
DATE STARTED 2/1119 COMPLETED 2/1/19
GROUND ELEVATION
HOLE SIZE inches
DRILLING CONTRACTOR
GROUND WATER LEVELS:
DRILLING METHOD Split Spoon Sample
AT TIME OF DRILLING 8.00 ft
LOGGED BY SF/CH CHECKED BY JEK
AT END OF DRILLING -
NOTES See Attached Location Plan
AFTER DRILLING
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MATERIAL DESCRIPTION
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20 40 60 80
Brown Sand with Roots
Brown Sand
4-5-4
SS
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SS 4-4-6
:
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Dark Gray Sand
5
(10)
Gray Sand
5-6-8
SS
(14)
.. .............
SL
SS 8-7-8
10
m
SS
(14)
o'X Gray Sand, Slightly Silty
5-6-6
$S
(12)
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5-5-5
SS
W
N
(10)
Bottom of borehole at 14.0 feet.
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KSM Engineering & Testing
BORING NUMBER B-3
P.O. Box 78-1377
KSM Sebastian, FL 32978
PAGE 1 OF 1
Tel:(772)-589-0712
Fax:(772)-589-6469
CLIENT TRM Construction Management
PROJECT NAME Lot 25, Ocean Estates Drive
PROJECT NUMBER 190527-b
PROJECT LOCATION Avalon Beach, Fort Pierce, Florida
DATE STARTED 2/1119 COMPLETED 2/1/19
GROUND ELEVATION
HOLE SIZE inches
DRILLING CONTRACTOR
GROUND WATER LEVELS:
DRILLING METHOD Split Spoon Sample
SZ AT TIME OF DRILLING 8.33 ft
LOGGED BY SF/CH CHECKED BY JEK
AT END OF DRILLING --
NOTES See Attached Location Plan
AFTER DRILLING --
ui
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A SPT N VALUE
w
20 40 60 80
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0.0
MATERIAL DESCRIPTION
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El FINES CONTENT (%) ❑
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20 40 60 80
Brown Sand with Traces of Roots
-
::::: Brown Sand
3-3-4
:.......:.......
SS
(7)
;'::•;
536
Dark Gray Sand
5 :..••.
:.:
SS 6-8-6
(14)
.... ..: ....... :....... :....... :.......
SS 6-6-7
- Gray Sand, Slightly Silty
(13)
:.......:.......:.......:.......
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10
8-8-9
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12-10-10
...... ........ .... ... ..
(20)
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6-5-5
PSS-
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(10)
Bottom of borehole at 14.0 feet.
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KSM Engineering & Testing
BORING NUMBER B-4
P.O. Box 78-1377
/j
KS1Y1 S basstian, FL 32978
PAGE 1 OF 1
Tel:(772)-589-0712
Fax:(772)-589-6469.
CLIENT TRM Construction Management
PROJECT NAME Lot 25, Ocean Estates Drive
PROJECT NUMBER 190527-b
PROJECT LOCATION Avalon Beach, Fort Pierce, Florida
DATE STARTED 2/1/19 COMPLETED 2/1/19
GROUND ELEVATION
HOLE SIZE inches
DRILLING CONTRACTOR
GROUND WATER LEVELS:
DRILLING METHOD Split Spoon Sample
AT TIME OF DRILLING 8.08 ft
LOGGED BY SF/CH CHECKED BY JEK
AT END OF DRILLING --
NOTES See Attached Location Plan
AFTER DRILLING ---
w
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A SPT N VALUE
ar=O
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20 40 60 80
PL MC LL
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MATERIAL DESCRIPTION
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20 40 60 80
C7
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❑ FINES CONTENT (%) ❑
0
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20 40 60 80
Brown Sand with Traces of Roots
......
Brown Sand
5-5-5
:.......:.......:.......:..... ..
(10)
SS
6-7-7
(14)
5
` .::
Dark Gray Sand
SS
5-5-6
:..:.
SS
......................................
Gray and
SS
7-8-8
0
10
(16)
m
N
0
Bottom of borehole at 10.0 feet.
WITIP --
75' A,
B-2 MGM B-4
LOCATION OF TESTS
PROJECT: Lot 26, Ocean Estates Drive, Avalon'Beach, Fort Pierce, Florida
I SHEET I OF 1 IV�'Sk Aff ENGINEERING DRAWN BY: J.L.
PERMIT #: DESIGNED BY: J.K. '
"PROJECT 9: 190527-b 207
"*J,AW ANDTE�TNGSCALE: NONE
-7