HomeMy WebLinkAboutLetterKEL-LER, SCHLEICHER & MacWILLIAM ENGINEERING AND TESTING, INC.
MARTIN (772) 337-7755 PO. BOX 78-1377, SEBASTIAN, FL 32978-137'i SEBASnAN (772) 569-0712
PALM BEACH (561) 845-7445 MELBOURNE (321) 768-8488
FAX 561) 845-8876 www.ksmengineering.net ST. LUCIE (772) 229-9093
( E-Mail: KSM�KSMENGINEERING.NET
C.A.: 5693 FAX (772) 589-6469
April 18, 2019
Paul J. Pane
TRM Construction Management
1512 SE Village Green Drive
Port St. Lucie, FL 34952
Re: Lot 6, Ocean Estates Drive
Avalon Beach
Fort Pierce, Florida
KSM Project #: 191534-b
Dear Mr. Pane:
JAN 2 9 2020
ST. Lucie County, Permitting
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 and cleared.
B. Project Description:
A two-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 may be required to reach the desired grades.
Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366
Tip C!IL:
"*;2 XVjL
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 6, Ocean Estates Drive -2- April 18, 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 three (3) 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
AN, �411AVA,
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) 768-8 488
FAX (561) 845-8876 E-Mal: KSMOKSMENGINEERING.NET ST. LUCIE (772) 229-9093
C.A.: 5693 FAX (772) 589-6469
Lot 6, Ocean Estates Drive -3- April 18, 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 soils consist mostly of fine-grained sand and
some fine-grained sand that is slightly silty or slightly clayed. Some traces of hardpan
were encountered in the borings- "N" values recorded during the boring operation
indicate the soil density is generally medium dense to dense. Please refer to the soil
boring logs for speck 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:
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
KELLER, SCHLEICHER & MacWILLIAP.4 ENGINEERING AND TESTING, INC.
MARTIN (772) 337-7755 P.O. BOX 78-1377, SEBASTIAN, FL 32978-1377 SEBASTIAN (772) 58"712
PALM BEACH (561) 845-7445 www.ksmengineering.net MELBOURNE (321) 768-0488
FAX (561) 845-8876 E-Mail: KSM@KSMENGINEERING.NET ST. LUCIE (772) 229-9093
C.A.: 5693 FAX (772) 589-6469
Lot 6, Ocean Estates Drive -4- April 18, 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 % 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 residence.
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
&%lJwa
KELLER, SCHLEICHER & MacWILL1AM ENGINEERING AND TESTING, INC.
MARTIN (772) 337-7755 P.O. BOX 78-1377, SEBASTIAN, FL 32978-1377 SEBASTIAN (772) 589-0712
PALM BEACH (561) M-7445 www.ksmengineering.net MELBOURNE (321) 768-8488
FAX (561) 845-8876 E-Mail: KSM@KSMENGINEERING.NEr ST. LUCIE (772) M-9093
C.A.: 5693 FAX (772) 589-6469
Lot 6, Ocean Estates Drive -5- April 18, 2019
Fort Pierce, Florida
1)
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 pleased to be of assistance to you on this phase of your project. When we may
be ofWrtherlseiyice to you or should you have any questions, please feel free to
co
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E-mail to: paul@trmcorpfl.com
Ronald G. Keller, P.E.: 37293 / S1 Lip. No.: 860 / Julie E. Keller, P.E.: 68366
KSMEngineering sTesting, _�'
_--30RING NUMBER B-1
P 0. Box 78-1377
PAGE 1 OF 1
11S S bastian, FL 32976
- • Tel: (772)-589-0712
Fax:(772)-589-6469
CLIENT TRM Construction Management
PROJECT NAME Lot 6. Ocean Estates Drive
PROJECT NUMBER 191534-b
PROJECT LOCATION Avalon Beach, Fort Pierce, Florida
DATE STARTED 4117/19 COMPLETED 4117/19
GROUND ELEVATION
HOLE SIZE inches
DRILLING CONTRACTOR
GROUND WATER LEVELS:
DRILLING METHOD Split Spoon Sample
VATTIME OF DRILLING 6.67 ft
LOGGED BY SF/AH CHECKED BY JEK
AT END OF DRIWNG —
NOTES See Attached Location Plan
AFTER DRILLING —
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Sebastian, FL 32978
PAGE 1 OF 1
• Tel'(772)-589-0712
Fax: (772)-569.6169
CdENT TRM Construction Management
PROJECT NAME Lot 6. Ocean Estates Drive
PROJECT NUMBER 191534-b
PROJECT LOCATION Avalon Beach, Fort Pierce, Florida
DATE STARTED 4/17/19 COMPLETED 4117119
GROUND ELEVATION
HOLE SIZE inches
DRILLING CONTRACTOR
GROUNDWATER LEVELS:
DRILLING METHOD _ Split Spoon Sample
V ATTIME OF DRILLING 6.75 R
LOGGED BY SF/AH CHECKED BY JEK
AT END OF DRILLING —
NOTES See Attached Location Plan
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NUMBER B-3
78-1377
_,30RING
Kl71Vl S basstian, FL 978
PAGE 1 OF 1
• • Tel: (772)•589-0712
Fax: (772)589-6469
Cl-i JNT TRM Construction Management
PROJECT NAME Lot 6. Ocean Estates Drive
PROJECT NUMBER 191534-b
PROJECT LOCATION Avalon Beach, Fort Pierce, Florida
DATE STARTED 4117119 COMPLETED 4117/19
GROUND ELEVATION
HOLE SIZE inches
DRILLING CONTRACTOR
GROUND WATER LEVELS:
DRILLING METHOD Sold Sown Sample
QATTIME OF DRILLING 6.67111
LOGGED BY SF/AH CHECKED BY JEK
AT END OF DRIWNG —
NOTFS See Attached Location Plan
AFTER DRILLING —
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