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Home My WebLink AboutB3-541 ENG RPT.PDFC TAWBA COUNTY BUILDING INSPECTION DEPARTMENT P.O. Box 389 Newton, NC 28658 PHONE #: 828-465-8399 FAX #: 828-465-8962 SUBGRADE VERIFICATION FORM FOR SOLE USE OF CATAWBA COUNTY BUILDING INSPECTION DEPARTMENT CHECK AS APPROPRIATE: RESIDUAL SOILS E]STRUCTURAL FILLS Approx. depth. - Date: October 25, 2003 Project Information: Project Name: Subdivision: Parcel Number: Street Address: Building Permit Builder / General Contractor Company Name: Address: Phone Number: Soil Engineering Company Name: Address: Phone Number: Project Manager Project Number: Basement Addition Hidden Creek Estates 371009056136 3971 Seaver Court, Hickory, NC BLD2003-00541 Mr. Robin Cockwill 3971 Seaver Court, Hickory, NC 28602 (828) 294-0559 Froehling & Robertson, Inc. 910 Tate Boulevard, SE, Suite 101 Hickory, NC 28602 (828) 324-4081 Michael W. Sloan, PE E77-036T Allowable Bearing Pressure 2,000 * psf Personnel from our firm have verified the bearing capacity of soils intended to support the structure noted above. Where appropriate, we have monitored proofrolling of residual soil prior to fill placement, conducted laboratory proctor and field density tests on fill soil, and/or conducted Dynamic Cone Penetrometer tests on subgrade soils. This work was performed in accordance with accepted engineering practice as required by the North Carolina State Building Code Residential Building Code 2002 Edition (IRC) and the North Carolina State Building Code (IBCXA%%I"1' CA/VRO��Ar�rri See attached report. s EAL _ _0/ 7 7 • rrrd ,� L ,�g'177Ya70391�dR Signature/Seal of Licensed Professional Engineer Representing the Soil Engineering Company SINCE FROEHLING & ROBERTSON, INC. GEOTECHNICAL • ENVIRONMENTAL • MATERIALS ENGINEERS • LABORATORIES "OVER ONE HUNDRED YEARS OF SERVICE" ® 910 TATE BOULEVARD, SE/SUITE 101/HICKORY, NC 28601 1881 TELEPHONE: 828-324-4081/FAX: 828-324-6770 EMAIL: WWW.FANDR.COM DAILY REPORT Client: Mr. Robin Cockwill 3971 Seaver Court Hickory, NC 28602 Project: Permit No. BLD2003-00541 Hidden Creek Estates Hickory, NC F&R Project Number E77-036T Date: 10/25/03 Technician: Michael Sloan Mr. Sloan traveled to the site at the request of the client to perform a subgrade evaluation of the last section of the rear wall basement footing. The client was in the process of constructing a new basement under an existing home. Only an approximate 30-foot long section of the rear wall remained to be constructed. Reportedly the Building Inspection Department had recommended that the subgrade for this section of the foundation and the slab subgrade be evaluated for bearing capacity. Mr. Cockwill had removed the washed stone from the slab area in about 5 random locations in order to evaluate the slab subgrade. The stone varied in thickness from about 10 to 18 inches. The new basement wall foundation is being constructed on the ground surface by forming a 20- inch wide concrete footing on the surface of residual subgrade. A portion of this section of the basement will support 2 stories and consist of wood frame construction. Minimum footing width for this type of construction and 2,000 pounds per square foot (psf) bearing soils is 16 inches. The foundation is actually being constructed for subgrade soils of 1,500 psf bearing capacity (19 inches in width). F&R had previously conducted a subgrade evaluation in July on a portion of the foundation subgrade by manual probing, hand angering, and Dynamic Cone Penetrometer (DCP) testing. Today, the evaluation was conducted in a similar manner by probing and hand augering the slab subgrade and the remaining foundation section located from about midway of the rear wall to the left corner (facing basement from back yard). Mr. Cockwill was informed that the residual slab and foundation subgrade bearing soils should provide 2,000 psf bearing capacity, based on the probing and previous DCP test results. Also, should the bearing surface become wet for any reason prior to concrete placement, the subgrade should be re-evaluated by F&R to verify the soil bearing conditions. Respectfully Submitted, `IIIM11,,1 FROEHLING & ROBE �1JA Qllkgo�i'',.,� �FES3 �••.;y9 Mich el W. Sloan, P.E = SEAL 0 57 6 Branch ManagerZOi59� t HEADQUARTERS: 3015 DUMBARTON ROAD •' Gj:75, • • TELEPHONE (804) 264-2701 . PA /�qP sir ram. nA,CW BRANCHES: ASHEVILLE, NC • BALTIMORE, MD'f�O�lA�4(� JJ JJle- CHESAPEAKE, VA CROZET, VA • FAYETTEVILLE. NC • FREDERICKSBURG, VA • GREENVILLE, SC SINCE FROEHLING & ROBERTSON, INC. GEOTECHNICAL + ENVIRONMENTAL • MATERIALS ENGINEERS • LABORATORIES "OVER ONE HUNDRED YEARS OF SERVICE" ® 910 TATE BOULEVARD, SE/SUITE 101/HICKORY, NC 28601 1881 TELEPHONE: 828-324-4081/FAX: 828-324-6770 EMAIL: WWW.FANDR.COM DAILY REPORT Client: Mr. Robin Cockwill 3971 Seaver Court Hickory, NC 28602 Project: Permit No. BLD2003-00541 Hidden Creek Estates Hickory, NC F&R Project Number E77-036T Date: 10/27/03 Technician: Michael Sloan Mr. Sloan traveled to the site at the request of the client to re-evaluate the subgrade for the last section of the rear wall basement footing. The client requested the re-evaluation as recommended during our previous site visit due to rain this past weekend. Today, the evaluation was conducted by probing and hand augering the remaining foundation section located from about midway of the rear wall to the left corner (facing basement from back yard). A soft area of about 5 feet in length was detected beginning about 5 feet right of the left corner. Mr. Cockwill was on site and was shown the area. It was recommended to over - excavate this area 6 inches and backfill with washed stone. Mr. Sloan returned later in the afternoon to verify that the over -excavation was performed. Based on the repairs made and evaluation conducted earlier, the subgrade should provide 2,000 psf bearing capacity. Respectfully Submitted, FROEHLING & ROBERTSON, INC. Michael W. Sloan, P.E. Branch Manager HEADQUARTERS: 3015 DUMBARTON ROAD • BOX 27524 • RICHMOND, VA 23261-7524 TELEPHONE (804) 264-2701 • FAX (804) 264-1202 • www.FandR.com BRANCHES: ASHEVILLE, NC • BALTIMORE. MD • CHARLOTTE, NC • CHESAPEAKE. VA CROZET. VA • FAVFTTFVII I F KW coanc ❑irveoi nr,,,, _ .-.,..,, ,,..