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Home My WebLink AboutKSM ENGINEERING & TESTING&%LJAV& 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 April 12, 2018 Perry Belanger 64 Aqua Ra Drive Hutchinson Island Jensen Beach, FL 34957 SCANNED BY St Lucie County Re: 64 Aqua Ra Drive Hutchinson Island Jensen Beach, Florida KSM Project #: 181275-b Dear Mr. Belanger: RECEIVED APR 18 2018 ST. Lucie 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 canal front site was fairly flat with an existing single family residence. B. Project Description: A single family rear addition and front covered carport 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 1,500 pounds per linear foot along the wall foundation and less than 15 kips for individual column footings. ' n: v� ,�;;�� , �•.,� •r rte,� `i:. fit. r Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366 Z%1jAVA 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 64 Aqua Ra Drive -2- April 12, 2018 Jensen Beach, 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 two (2) Standard Penetration Test borings (SPT), in the proposed construction area. The SPT borings were terminated at depths of 10 to 12 feet below grade. The locations of the borings are indicated on the attached boring Location Plan. 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 A% L-3iva 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 64 Aqua,Ra Drive -3- April 12, 2018 Jensen Beach, 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 fine-grained sand that is slightly silty/clayed. "N" values recorded during the boring operation indicate the soil density is generally loose 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. Typical Site Preparation: The proposed -addition areas, plus a minimum margin of three feet (if possible), beyond the proposed construction shall be stripped and grubbed of surface debris, including vegetation, roots and organic matter. Any stumps shall be removed entirely. The addition areas 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 addition 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 6 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. This is important due to the loose soils found in the test borings. Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366 TIP C 1 t A% IIIJiva 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 64 Aqua Ra Drive -4- April 12, 2018 Jensen Beach, Florida G. Foundation: Provided that our recommendations for site preparation are followed, the proposed additions may be supported on conventional concrete, steel reinforced footings designed for an allowable soil bearing pressure of 2,000 pounds per square foot, or less. With the foundation properly designed and the site properly prepared, we anticipate total settlements less than 1/2 of an inch and differential settlements of less than 1/4 of an inch. The majority of the settlement should occur during construction. H. 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 our office. m Ronald G. Keller, P.E.: 37293 / SI Lic. No.: 860 / Julie E. Keller, P.E.: 68366 KSM Engineering & lwg low BORING NUMBER B-1 KSM P.O. Box 78-1377 PAGE 1 OF 1 Sebastian, FL 32978 Tel: (772)-589-0712 Fax:(772)-589-6469 CLIENT Perry Belanger PROJECT NAME 64 Aqua Ra Drive, Hutchinson Island PROJECT NUMBER 181275-b PROJECT LOCATION Jensen Beach, Florida DATE STARTED 4/10/18 COMPLETED 4/10/18 GROUND ELEVATION HOLE SIZE inches DRILLING CONTRACTOR GROUND WATER LEVELS: DRILLING METHOD Split Spoon Sample �Z AT TIME OF DRILLING 2.50 ft LOGGED BY MS/SF/NV CHECKED BY JEK AT END OF DRILLING -- NOTES See Attached Location Plan AFTER DRILLING --- W o A SPT N VALUE A v >- W } w w 20 40 60 80 ~ p? Q n z 0 LL P�0 oo p MATERIAL DESCRIPTION > CCi O Of —10 > w w Y " 20 40 60 80 Z U z VO ElFINES CONTENT (%) ❑ Q W Of 0 20 40 60 80 Light Brown Sand SS 5-7-8 .: SZ Gray Sand, Slightly Silty SS 10-12-12 :.....:. :. (24) 5 ;.:•.. TT SS 7-6-5 Brown Sand ;.:. SS 2-1-2 (3) .. .... .... .... ... c9 10 :: • : •:: 2-4-8 :....... :...... ro (12) iss ..... ....... ....... . 12-17-25 ....... :...... ........ :....... ....... . (42) W Bottom of borehole at 12.0 feet. w U) �c 0 O O m Lu w J LL Y W J K W L 1 0 o_ m r2 •r N n 0 ro g z z T co 0 J a x m 2 U W F- O W C7 „ KSM Engineering & Wng BORING NUMBER B-2 P.O. Box 78-1377 KSM Sebastian, FL 32978 PAGE 1 OF 1 Tel: (772)-589-0712 Fax: (772)-589-6469 CLIENT Perry Belanger PROJECT NAME 64 Aqua Ra Drive, Hutchinson Island PROJECT NUMBER 181275-b PROJECT LOCATION Jensen Beach, Florida DATE STARTED 4/10/18 COMPLETED 4/10/18 GROUND ELEVATION HOLE SIZE inches DRILLING CONTRACTOR GROUND WATER LEVELS: DRILLING METHOD Split Spoon Sample AT TIME OF DRILLING -- LOGGED BY MS/SF/NV CHECKED BY JEK AT END OF DRILLING -- NOTES See Attached Location Plan AFTER DRILLING -- o ♦ SPT N VALUE U EL Z. 20 40 60 80 a=O O MATERIAL DESCRIPTION �m -1 g _ wo > �zD O Z)¢ �� w w ~� Z a PL MC LL I--�—I W„ a- = W O - m O > U ” } " 20 40 60 80 O < z � U z Oa o FINES CONTENT (%) El FINES 0 20 40 60 80 Brown Sand :. SS 3-3-3 Grayish Brown Sand, Slightly Clayed with Slight Traces of 2-3-3 Organics SS (6) 5 :.•. o•..' 223 SS:....... :....... :....... ....... Brown Sand SS 3-4-4 :...• . (8) :..............:.......:....... .. SS 7-14-24 :..... .......... :....... :....... 10 :. (38) m Bottom of borehole at 10.0 feet. Lo N ro K w w co 2 w Y_ U U O ro E6 W J LL 2 co Y K W 7 W U co Y ro 0 O ro M �r H ❑ ca U ❑ W ro ro F- ❑ _ CL ro z U FW- O W r i; S TT. I; L is ' i 7 x. avvr: ..v-rn.s. B-7 ' � t � M1 t 1k1k1Y Al � 4 d: rq 3 i` r LOCATION OF TESTS PROJECT: 64 Aqua Ra Drive, Hutchinson Island, Jensen Beach, Florida SHEET 1 OF 1 - ,PSk °ENGINEERING DRAWN BY: J.L PERMIT #: PROJECT #: 181275-b ,L1,17,AVL AN Q TtS.TI N G DESIGNED BY: J. K. DATE: 20180412 SCALE: NONE