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Home My WebLink AboutRe: soil inspections/evaluation 10/03/2003 13:10 FA% 8905889 INSTANT TESTING/ALLIED �001 Y , " �J��1,.� �D�+s:Oc�tober 3, 2003 ' I Number of pdges inCluding cover sheet. 2 70:Bruce 1�ROM.• ban Naughton znspections, City of Orono Ynstax�t Testing Company 7I25 W. X26'� Street, Suite 500 Phonc: Savage, MN 55378 F�:: 952-249W4616 Orono pho�p: (952)890-5909 866�774-•�4621 Joneses �'�: (952)890.sss3 Cell (612)865�1619 I CC' . REMARXCS: ❑ Urgent ❑ Far your review ❑ Reply ASAI' ❑ ,I'le,a.se Comment At 3490 No�.-th Shore Drive, the following revisions were made to the October 2, 2003 report.on October 3, 2003. Note they are italicized. �tern X - last li.ne elarifies groun.dwater elevations. Item 2 -Points 3 and 4 aze aclded to cla�ni�y. 7oneses : Can you or your structural engineer send something to Bruce showing that you wi]1 have a s�cuctura� floor? Cal1 if you have any questions. Thanks. Dan Nau�ton . 10/02/2003 14:48 FAX 890588� INSTANT TESTING/ALLIED C�001 / - _ I�TSTANT TE STING C4MPANY ��1 �Date:Oc�ober 2, 2003 . Number of pages including cover sheet:2 TO: Bruce FROM' Dan Naughton Ins ections Of�ice �nstant Testiung Company Ci y of Oroz�o 7]25 W. 126'� Street, Suite 500 Savage, MN 55378 Phone: ' .phone: (952)890-5909 Faz:9Sz-z49--�616 Fca: (952)890-5883 Cell (GL2)865-1619 � rr: Jo�r. �ct,��o� R,�MAItKS: � Urgent � ,For your review ❑ Reply ASAP ❑ Please Comrreent Please call if you have any ynest�ons or comments about this fax ar followiung tasks. it is good to see thiag pxogressing as they have '1`ha.nks. D�.n Naughton j '� = INSTANT TESTING C�MPANY � C07125 126`h Avenue • Savage, Minnesota 55378 Telephone: 952-890-7366 Fax;952 890-5883 Field Inspection Report Cfient Name: John Jones 8� Charlotte Family Residence @ Date of Inspections: October 1, 2003 Site Location: 3480 North Shore Drive Time: 9:0o AM 8�3:00 PM Orono, Minnesota Field Observations : (1) At the above address in Orono our site soil inspections and evaluations of the foundation soils began in August developing a design that would be acceptable considering th� high water table, the sand mixed with some silty soils and the need for stabilizing rock near the water surFace. It so happened that one of the first test pits (excavations) was in one of the weakest soil areas on site. �ased on this wet silty material an elaborate system of rock, fabric and compacted sand as proposed for the footing system. This concept was set aside when more extensive excavating and surveying revealed sounder soil at the actual foofing depths and a water table that would be 3' to 4' below the footing. (2) The key elements of the foundation system selected and installed were: 1. Stabilizing the base with 1 1/2" rock {12"to 24" deep). 2. Covering rock with sand compacted to grade. 3. Three#4 rebar in bottom 3" of concrete footing. (3) Two final inspections were conducted on October 1, 2003. In the aftemoon we were joined by Bruce from the Inspections Office in Orono_ On a joint trip around the site, one area about 4' in footing length and one foot wide was discovered to have no rock on the inside half of the footing forms. On the inside some organic clays and silty soils were uncovered by stabilizing rock_ These areas wili be conditioned to the status of the other 98% of the project before proceeding. (3) This excavation and foundafion soils system is quite suitable for construction of the proposed structure. If further information is requested or if you have any questions, please call at your convenience. R orted By: � �� /� az�3 Dani I J. aughton, P . Minnes a Registration o. 20191 Chafge codes: #701 Mobi!'¢ation:0 #612 Mileage:14S mi.(3 trips) �609 Engiheer. 4.5 hours Z00� Q3I'I'It�/9uIZS3.L �I�'ZSKI C889068 �3 8��i�T COOZ/ZO/OT 10/0�/2003 13:10 FA% 8905889 INSTANT TESTING/ALLIED C�002 . � IT � INSTANT TESTING COMPANY � C0 7125 126tl'Avenue•Savage, Minnesota 55378 7elephone:952�90-7366 Fax85Z 890-5883 Field Inspection Report Clierrt Name: John Jones 8�Charlotte Family Residence � Date of Inspections: October 1, 2003 Site Location: 3490 North Shore Drive Time: 9:00 AM 8�3:00 PM � Orono, Minnesota Field Observations : (1) At the above address in Orono our site soil inspe�tions and evaluations of the foundation soils began in August developing a design that would be acceptable considering the high water table, the�sand mixed with some silty soils and the need for stabilizing rock near the water surtace. It so happened that one of the first test pits (excavations}was in one of the weakest soil areas on site. Based on this wet silty material an elaborate system of rock, fabric and compacted sand as proposed for the footing system. This concep#was set aside when more extensive excavating and surveying r�vealed sounder soil at the actual footing depths and a water table that would be vary from 4'be/vw the foofing fop to 1'above the foofing elevation. (2) The key elements of the foundation system selected and installed were: 1. Stabilizing the base with 1 1/2" rock(12"to 24'' deep). � 2. Covering rock with sand compacted to grade. 3. Two #5 nsbar in bottom 3" of concrete footing. 4. Load bea�ng walls aie only on the perimeter, a stnrctural floor will be instaNed. (3) Two final inspections were conducted on October 1, 2003. In the aftemoon we were joined by Bruce from the Inspections Office in Orono. On a joint trip around the site, one area about 4' in footing length and one foot wide was discovered to have no rock on the inside half of the footing � forms_ On the inside some organic clays and silty soils were uncovered by stabilizing rock. These are�as will be conditioned fio the status of the other 98� of the project before proceeding. (4) This excavation and foundation seils system is quibe suitable for constru�tion of the proposed structure. If further information is �equested or if you have any questions, please call at your convenience. Reported By: � �'� Date: October 2, 2003- �aniel J_ N hton, .E. f Revised : O�toper 3, 2ooa Minnesota gistration No.20 1 N�e Italios 1, 2-3, 2-4 Charge codes: #701 Mobil¢atlon:0 #612 Mileage:146 mi.('3 fips) �Engineer. 4.5 houl's ' 11i242003 13:41 MINNETONKA � 9522494616 N0.973 D02 �1/2412003 13:02 FA� 8805883 INSTANTiTE9TING/AL�I�D �001 � I NST�NT T�STI �1+� C��1 P�f�Y I '� - � c� �125126'"Avenue�Sava�o, Minn��sota 55378 Telep�flne:B62-B80-7390 Fax:962 88�.5883 Fleld Inspectioh Report Clfent Narne: ,1ohn Janes �Charlotte Family Residence � Date of lnspect`ane: October 1, 2Q03 Site Lacatlan: 3490 North Shore Drive Ofa�o, Minn�so'� Tim�: 9:00 AM�3�DD P Fi�ld Of��e�retians : (1) At�h�above address in �rono eur site soil ittspec4ons and�v�lua4ions of th�founda�on aoil� bagan in August develaping a d�si.gn that would be ac,�eptable consldering the hlgF�water tebl�e, the sand mixed wlth �ome silty soils and�ha need for�tabili�ing r��fc near ths w�tzr surtace. It sa hepp�n�d�at nne of the fir�'t t�st pits (excavations)wa6 in dne of the weake6t soll areas on s1te. Hase�d on thfs wat silt�r materlal an e�aborate system of rock, f�briC a�d comp�c��d sand ae proposed Yor[ha foaifng system, Thls concept w�s set�side wher� more exten5lve excavet�n8 and surveying ravealed sounder soll at fh��etual footinp d�pths and a waier table that would vary fiom �'below fhe footi�g fap to 9�abeve tPr�footi�fg elewarion. (2) The key efements of tho foundatlon system salcaatea and inslalled wer�: 1. Stebiliaing tho bas�with 1 1/2" roCk(12"to 24" deep). 2. Ccverfng rock with sand compacted to �r�d�. 9, Msfalling fiMa #6�ebar In bottom 3"a�concr�te fontin�. 4.�Qad b�Aon� w�lls ar�only on the perimefar, � stivetural�oo�will b�irastalled(nata (3� 7wo fin�l inspectiona were c�nduct�d on Octobor 1, �Ap3_ In tha aRarnoQn we were joined by B�ce from th� Inspe�tlnns Office ir� Orono. Qn e Jolnt trip eround the site, one erea about d' In foafing length �nd on�foot wlde was discavered to have n� ruck an tha inaide hatf of the foo�ng forms. Orl the inside svme crggnlc clays and silly sAlls were uncovgred by st�bilizing rock. Th�se areas will �e condltioned to the statua af th�ohher 98%of'the pr+aject befor� proceeding. (4) 7his excavation and foundatlan�ails systern Is quite sutrabl�for constructlon ot the proposed stru�ture, If furtller informabon is r�quest�d Qr if you heve �n�r quastlans, p(ease call. (5) Rewisod -We did not dlreat(y talk ta the A►cFjltect ar Structurel �n�lneer an tltis ppoJe�!and th� r�a�uft wa�some communication eRors. �?ur untletstanding wa&�hat a struv�ural slab was no!n�ede�1.A typographic er►Qr I�ft�utthe word not in Para. (2�#d abave. The clean�s�ndy, soll in the footptrnt of the house a!3490 Nor�h Shcre Orive wlll ha�e a laad bear�ng capacity oP 1004 to 150o pounds per cubic foot, Re rted By, ' Date: October 2,2003 ', R�vised : O�obar 3,2�03 . Note Itellcs 1, 2-3,2� � 211d �9V.;IVOV, 21, 2003 �ni�el J, qhtc�n, P P��a� S -Alf Bold Mlnn�so pglm2ro�on No, Zp181 • Cc � I��M�.�Ir��, ', 12/10/200� 12:57 FAX 8905883 INSTANT TESTING/ALLIED f�001/001 � T � I NSTANT TESTI NG COM PANY � �O7125 126�'Avenue • Savage, Minnesota 55378 Telephone: 952-$90-7386 Fax:852 890-5883 Field Inspection Report Client Name: John Jones � Charlotte Lipa Family Residence Date of Inspection: November 28, 2003 Site Location: 3�80 No�th Sho�e Drive 3`�90 Orono, Minnesota Time: 3:00 PM cc� City of Orono - Inspectians '�r�c.� Field Observations : (1) At the above address in Orono we did a follow up site soil inspection inside the perimeter of the footings to evalua#e the expected strength vf the soils under the floor slab when the project is c�mpleted. With all interior load bearing walls and columns removed from the design before cons#ruction began, the perimeter footings are carrying most of the struetures load. The interior walls, furnishings and appliances average less than 100 pounds per square foot. The 4" concrete slab will weigh 50 pounds per square foot and the two automobiles will produce eight spot loads of 1000 pounds per square foot. The maximum bearing pressure at the building pad will be 1150 pounds per square foot. This will dissipate to approximately 165 pounds per at the 6 foot depth of the silty clayey soils_ At other sites along North Shore Drive our drill rig has encountered bearing pressures of 1300 pounds per square foot in the silty clayey soils at and below the water level. This is eight times greater than the cafculated bearing pressure at the subject site, which gives a large factor of safety and a great comfort zone for proceeding. (2) A Dynamic Cone Pentvmeter (DCP)*was applied to the interior soils on site. Explained in more detail below this device is very effective in determining the 'in place' strength of soils_ The sands to a depth of 4 feet were abserved to be sofid fill materials and the test results bear this out (3500 pounds per square foot). We were no#able to get to get deeper to the clayey silts at 6 feet as the soils were too tight and cold to allow penetration of the measuring device. � " 7he DCP Is an objective test to confrm soil st�ength. A cone at the end of a metat rod is driven into the soil by a 17.2 pound weight falling 0.5 mete�s, The resultant millim�ers per blow can be conv�rted to the cem�monly used pounds per square foot. _ � R'eported By: Date: Dec. 8, 2003 �� Daniel . Naughton, PE Minnesota Registratian No.20191