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Home My WebLink AboutSoils Engineer Report 3321-803-0013-000-420201219Florida's Leading Engineering Source Environmental •Geoteohnical-Construction Materials Testing - Thresho ltl and Special Inspections • Plan Review & Code Compliance February 20, 2020 Eddy and Connie Beland 2204 Greenfield Road Ayr, ON, Canada NOB 1E0 Subject: Report of Soil Exploration Single -Story Residence and Pool 7964 Plantation Lakes Drive, Port St. Lucie, Florida GFA Project No. 20-8433.00 Dear Mr. and Mrs. Beland: GFA International, Inc. (GFA) performed four (4) auger borings with Hand Cone Penetrometer (HCP) testing at the above referenced property on February 18, 2020 at the approximate locations illustrated on the attached Test Location Plan. The subsurface exploration activities were performed in accordance with Chapter 18 of the 2017 Florida Building Code, Sixth Edition and applicable ASTM standards. Detailed information for the subsurface conditions encountered in the borings are contained on the attached log of boring records. Based on the test results, the soils upon which the referenced residence will be founded are capable of providing a maximum allowable bearing capacity of 2,500 psf subject to the limitations noted herein. We recommend that the footings bear at a depth of at least 12 inches below finish grade measured from the lowest adjacent grade. We also recommend a minimum footing width of 18 inches for spread footings and 16 inches for monolithic footings, but not less than 8 inches more than the width of the imposed wall. This report does not state or imply that the foundation soils at the bearing level will remain in the original condition in which they were found during the subsurface exploration activities. Exposure to the environment may weaken the foundation soils at the bearing level if the foundation excavations remain open for an extended period, or if the foundation soils are exposed to rainfall. Consequently, it is recommended that the excavations for wall and column footings be performed to final grade and foundation concrete be placed as soon as practicable to reduce the potential for deterioration of the bearing soils. The geology of the site as mapped on the USDA Soil Survey website consists of Wabasso sand, 0 to 2 percent slopes (48). These are sandy soils and organic soils are not Indicated. In addition, unsuitable bearing materials were not observed in the boreholes, and only normal site preparation should be required for construction. GFA estimates that that a variable thickness of fill will be required to attain design grade. The 2 feet of soils below existing grade, below the bottom of all new footing excavations and slabs, and all fill material should be compacted to at least 95 percent of the modified Proctor (ASTM D 1557) maximum dry density prior to placement of foundation concrete. 607 NW Commodity Cove • Port St. Lucie, Florida 34986 • (772) 9243575 • (772) 924-3580 (fax) - www.teamgfa.com THROUGHOUT FLORIDA Single -Story Residence and Pool 7964 Plantation Lakes Drive, Port St. Lucie, Florida GFA Project No. 20-8433.00 February 20, 2020 Page 2 During site preparation, foundations and the below grade remains of any structures that are within the footprint of the addition and garage should be removed. Similarly, utility lines within the limits of the proposed construction should also be removed or properly abandoned so that they will not adversely impact new overlying structures. GFA should be provided the opportunity to review the final foundation design plans and specifications to determine whether GFA's recommendations have been properly interpreted, communicated, and implemented. If GFA is not afforded the opportunity to participate in construction related aspects of foundation installation as recommended in this report or any report addendum, GFA cannot accept responsibility for the interpretation of our recommendations made in this report or in a report addendum for foundation performance. We appreciate the opportunity to be of service to you during this phase of the project and look forward to a continued association. Please contact the undersigned if you have any questions or comments, or if we may further assist you as your plans proceed. Respectfully Submitted, GFA INTERNATIONAL, INC. Florida Certificate of Authorization No. 4930 John Digitally signed by John Kent Kent Date: 2020.02.20 14:59:35-05'00' John Kent, P.E. Senior Project Engineer Florida Registration No. 63218 This Item has been digitally signed and sealed by John Kent. P.E. on the data adiacent to the seal. Printed copies of this document am not considerod signed and sealed and the signaWn mwt be "rilled on any electronic copies. Attachments: Test Location Plan Auger Boring Logs Notes Related to Boring Records Distribution: Eddy and Connie Beland Erik Soderstrom, E.I. Geotechnical Department Manager GFP I wee•~ Ca�dsEaaChas� �" Ufa, �•wr'+•' +�'Q,r'�• .., ,� ' `�" 'K•�n.eSt� y"x �crvt^''�r* •..475 ri ; GFA International, Inc. LOG OF BORING AB-1 607 NW Commodity Cove PAGE 1 OF 1 Port Saint Lude, Florida 34986 (772) 924-3575 CLIENT NT Eddy and Connie Beland PROJECT NAME Single -Story Residence PROJECT NUMBER 20.8433.00 PROJECT LOCATION 7964 Plantation Lakes Drive, Port St. Lucie, FL DATE STARTED 21'18120 COMPLETED 211BI20 LATITUDE LONGITUDE DRILLING CONTRACTOR GFA International Inc. GROUND WATER LEVELS: DRILLING METHOD Auger Boring -VAT TIME OF DRILLING 6.3 ft DRILLER ES AT END OF — NOTES AFTER DRILLING — WF w R iR = �z wz z t�S v a�� MATERIAL DESCRIPTION arZZp z$pW tZ Za�� iz wV OU 80 80 60 70 at GFA International, Inc. LOG OF BORING AB-2 607 NW Commodity Cove PAGE 1 OF 1 Port Saint Lucie, Florida 34986 q,. (772) 924-3575 CLIENT Eddy and Connie Beland PROJECT NAME Single -Story Residence PROJECT NUMBER 20-8433.00 PROJECT LOCATION 7964 Plantation Lakes Drive, Port St. Lucie, FL DATE STARTED 2118120 COMPLETED 2/15120 LATITUDE LONGITUDE DRILLING CONTRACTOR GFA International Inc. GROUND WATER LEVELS: DRILLING METHOD Auger Boring �7 AT TIME OF DRIW NG 6.30 ft DRILLER ES AT END OF — NOTES AFTER DRILLING — y S yr iR � V� i ygvocal SK�rr $r o� _� MATERIAL DESCRIPTION ur a: LL�r Z =z to O`. v" iV V O xW Z a 0 Grey fine sand, some roots (SP) 80 60 3 H 40 3 1 • • s'S 70 Greyorange clayey fine sand (SC) i 0 8 Bo 5.0 3 80 ffi as 70 Grey si8y fine sand ISM) 'a 7.5 60 ' a LL 60 a tx 3 ;rc 6 inn 80 Bottom of borehole at 10.0 feet. GFAInternational, Inc. LOG OF BORING AB-3 607 NW Commodity Cove PAGE 1 OF 1 Port Saint Lucie, Florida 34986 (772) 924-3575 CLIENT Eddy and Connie Betand PROJECT NAME Single -Story Residence PROJECT NUMBER 20-8433.00 PROJECT LOCATION 7964 Plantation Lakes Drive, Port St. Lucie, FL DATE STARTED 2/1820 COMPLETED 2118/20 LATITUDE LONGITUDE DRILLING CONTRACTOR GFA Intemational Inc. GROUND WATER LEVELS: DRILLING METHOD Auger Borina V_AT TIME OF DRILLING 6.30 ft i DRILLER ES AT END OF -- NOTES AFTER DRILLING — WF Wx U F W �$' V CF yaZ wF H iw 9�j MATERIAL DESCRIPTION LLw uWlc�cai ❑vivV �J S V 0U S 3 0.0 y Grey floe send (SP) 30 60 2.5 60 Light brown dayey fine sand (SC) z � 70 y w 8 80 5.0 s.0 Light brown fine sand with day (SPSC) W 80 o E so 'a 7.5 60 s r LL 60 FS C W 40 0 tionom or Dorenoee at ium feet. GFA International, Inc. LOG OF BORING AB-4 607 NW Commodity Cove PAGE 1 OF 1 Port Saint Lucie, Florida 34986 (772) 924-3575 �• CLIENT Eddy and Connie Boland PROJECT NAME Single -Story Residence PROJECT NUMBER 2D-8433.00 PROJECT LOCATION 7964 Plantation Lakes Drive, Port St. Lucie, FL DATE STARTED 2/18120 COMPLETED 2/18/20 LATITUDE LONGITUDE DRILLING CONTRACTOR GFA International Inc. GROUND WATER LEVELS: DRILLING METHOD Auger Boring -VAT TIME OF DRILLING 6.20 ft DRILLER ES AT END OF — NOTES AFTER DRILLING — � W WZ i W z� W yz5' MATERIAL DESCRIPTION ii WU CU ov�Vv C7J No eSjYL W a 0.0 Tan fine sand, some roots (SP) 5 80 L 7_Y J so 3 2.5 40 3.5 70 Light broom clayey fine sand (SC) 80 5.0 s s W 80 Light brown silty clayey fine sand (SCSM) a � 70 ui S 7.5 70 n w <6 O LL 3 70 F�q S T. 80 10-0 Bottom of borehole at 10.0 feet. NOTES RELATED TO BORING RECORDS AND GENERALIZED SUBSURFACE PROFILES 1. Groundwater levels (if encountered) were recorded either during or following the boring completion on the date indicated. Fluctuations in groundwater levels are common - see the report text for a discussion. 2. The boring locations were identified in the field by estimated distances and offsets from existing reference marks and/or other site landmarks. 3. The completed boreholes were backfilled to adjacent site grade using drilling spoils and patched with asphalt cold mix in pavement areas. 4. The Log of Boring records represent our interpretation of soil conditions based on visual classification of the soil samples recovered from the borings. 5. The Log of Boring records are subject to the limitations, conclusions, and recommendations presented in the report text. 6. The Standard Penetration Test (SPT) N-values contained on the Log of Boring records refer to the total blow counts of a 140-pound drop hammer falling 30 inches required to drive a split -barrel sampler a total distance of 12 inches into soil strata at specific depth intervals. 7. The Hand Cone Penetrometer (HCP) values contained on Log of Boring records and the Cone Penetration Test (CPT) values contained on the Cone Penetration Sounding logs refer to the cone tip resistance recorded when pushing the cone tip into the soil strata at specific depth intervals. 8. The soil and/or rock strata interfaces shown on the Log of Boring records are approximate and may vary from those shown on the logs. The soil and/or rock descriptions shown on the Log of Boring records refer to conditions at the specific location tested. Soil/rock conditions may vary between test locations. 9. Relative density for coarse -grained soils (sands/gravels) and consistency for fine-grained soils (silfs/clays) are described as follows: Coarse Grained Soils (Sands and Gravels) Fine Grained Soils (Silts and Clays) SPT N-Value HCP Value (kg/Cmz) CPT Value (tsf) Relative Density SPT N-Value HCP Value (kg/Cmz) CPT Value (tsf) Consistency 0-4 0-16 0-20 Very Loose 0-2 0-20 0-3 Very Soft 5-10 17-36 21-40 Loose 3-4 21-35 4-6 Soft 11-30 37-116 41-120 Med. Dense 5-6 >35 7-12 Firm 31-50 117-196 121-200 Dense 9-15 13-25 Stiff >50 > 196 >200 Very Dense 16-30 26-50 Very Stiff >30 >50 Hard 10. Grain size descriptions are as follows: Description Particle Size Limits Boulderr than 12 inches Cobble 3 to 12 inches Coarse Gravel 74 to 3 inches Fine Gravel No. 4 sieve to /4 inch Coarse Sand No. 10 to No. 4 sieve Medium Sand No. 40 to No. 10 sieve Fine Sand No. 200 to No. 40 sieve Fines(Sift/Clay) Smaller than No. 200 sieve 11. Definitions for modifiers used in soil/rock descriptions: Proportion Modifier Approximate Root Diameter Modifier <5 Trace Less than /sx' Fine roots 5%to 12% Little 1/32'to 1/4" Small roots 12% to 30% Some 1/4" to 1" Medium roots 30% to 50% And I Greater than 1" Large roots Organic Soils: Soils containing vegetative tissue in various stages of decomposition having a fibrous to amorphous texture. Usually having a dark brown to black color and an organic odor. Organic Content Modifiers: <25%: Slightly to Highly Organic; 25% to 75%: Muck >75%: Peat 6[p