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Home My WebLink AboutRe: foundation findings for remodel ., , � ; , � s t��,x , ' r, �` ��f_�.; M ':15itsv�:��,'� �,'s3�,j�r� G ' �en�ineers 6st tlro job dorre N;�ht 5201 E.R'►ver Road,Suite 308 Minneapolis,MN 5542I-I027 Phone:763.57I.2500 Fax: 763.571.1I68 February 29, 2008 Revised 2-29-OS Oak Hill Incorporated 14317 McGinty Road West Wayzata, MN 55391 Attention: Ton� Zie�ler Subject: Proposed Residenc�RemodelJAddition-Foundatian Findings Ulteig Pr�ject No.: 2�L1528 To Whom It May Concern: The purpose of this letter is to report the findings of a structural engineering review of the existing foundation for the praposed add'ztionjremod�t of the residence under cc�nstructic�n located in Or�no, MN. ASSIGNMENT Ulteig Engineers has been retained to provide a structural en�ineering review af ehe proposed remodel for the residence located in Qrono, MN, as ciirected by Tom Ziegler, of the Oak Hill Incarparated. BACKGROUND Tam Ziegler of Oak Hill Incorporated is proposing to remodel an existing, single-family structure. The construction consists of a complete rebuild to the existing foundativn line to match the ccirrent house footprint zvith crn additianal level ai�ove the existing top floor elevation. An attaclted garuge with fiving space abave zvill be added to the rear of the existing house. Tom Ziegler wishes to have a structural engineering review�f the praposed remodel, along with recomznendations Eor any required repair work. i , Minneapolis, MN•Detroit Lakes, MN•Fargv, ND•Bismarck, ND•Sioux Falls, SD www.ulteig.com i , I ` Proposed Remodel of Existing itesidenoe Ulteig Project No.207.1528 314/20� Page 2 DES� IPTION The existing building is a two-story, single-family reside�nce with a concrete block foundarion wall, cast-in-place conczete sirip foo#ing around the perlmei�ex, and wood framed superstn�cture. The exisnng faundation£ooiprinfi is approximatety 2b'-p" by 30'-0". The basecnent has a slab-on-grade concrete floar. There is an exisEing wood beam and mlumn line supported by existing spread £ootings below each column. OBSERVATIQATS AN�CQ�V�,A�iENTS 1. The #oliowing in#ormation was obtained thro�zgh a sitc inspec#ian on December 4, 2bQ7 by Dan Sargeant, PE and Nick Hanson af Ulteig: a. The existing foundaHon walls were constructed of 6-inch high by 24inch long concrete masonry blocks. It was assumed that the block extended 12-inches deep, but could not be veri£ied at the riume of inspection. The rrvva[ls measured 79 inches in height from the top of slab to the top o#ja�st bearing. The walls showed minor signs af cracking in various spots around the perimeter. A �/4' wide vertical crack could be s�en at the front wall, approxinnately 3'-0" in from each of the side wa[ls. b. A new point ]oad will be indu�ed at the front wall approximate�y 3'-0" in frozn each side wail. The point loads will suppar# the new second floor framing and roof trusses spanning 2fi'-0" each at the front o#tE�e house. c. The exis#ing wvood framed superstructure will be li#ted off the existing foundahon and the fop three courses wilt be removed. One cours� of 6" concrete �tock witl be a�tded zvith grout and anchor I�otts instalIed. A new har�d framed zvaIt, b�others, u?idI be c4rrstraccted orr top of fhe new btock. �"he neu>height of the basement wuils witl be �ryproximately 5'-4". As required by the Cit� of Orono, the existing basement u�iI[he rnmpleteIy t�ackfilIed. The contracotor wilI plr�ce a new sIav-on-grade as the rrew f rst-leve! floor. A�I recornrnendations for bu�[I and compnction shou[d be foltozved as described in n soil boring reporE frorn .r4rnerican Engineering&Testing's report dated February 11,2QU8. � d. Sections o£ the �iasement floor slab were removed allowing for the concrete strip foo�ing to be inspected. The footing appeared eo be approximai�ly 8- � inches deep. The strip foaEing was appmximately 4 to 5-inches beyond the concrere blo�k foundation watl on the inside. e. The soit appeared Eo be fairly silty in nature, and the watex table was observed to be at th� faoting elevation. Tlie soi! is described in AET`s report as ; 1 i ; ; � � Proposed Remodel of E�acisting Residence Ulteig Project AFo.207.]528 314/Z00� Page 3 ciayey-sand to siity-sand zuith an at�owaUte bearing capacity of 2,OUQ pounds pPr square joot. The water tab[e is reported to F�e reiafively high and itarctuates frorn�ear to year with the varying lake leuets. These stutements a�pear to be in order zoith Lliteig's obserrmtiotrs. F. The existing 9 Y�"deep by 5 �/a" wide wood beam and 5�!a" square column line appeared to be in good condition. A portion af the concrete basement siab had also been removed near a column and there appeared to be a concrete footing below this column. g. The existing basement floor consisted of a concrete stab-an-grade. M'rnor cracks could be seen thraughout the slab area in various lacations. Several lacations of the slab (1ad b�en removed ta alt�w for footing inspections to be compieted. h. The existing grade was measured fmm the exterior of the house to be down �pproximateiy 3'-0" #mm the top course af block around the entire p�rimeter of the hous�. The contractor is proposing to modify th� Iandscape to better drain the property. �'he height of the urtbalan�ed�tt witt be raised to approximatety T'-0' of unbatanceri frll from the new fIoor herghc to aid in the new drarnage af tlre property. STR_UCTUILAt A11i�;LYS�S 2. A structural engineerin�anaiysis was completed and the#ollowing il�ms are notedr a. 'Fhe proposed concrete rnasonry foundation wall will require each o.f the existing cores to be sotidly grouted. The solidly grouted foundahon wall wiil be structuratly adequate to support the new �ropased verHcal loads. The conkractor is tv Field verify the exis�ing foundation masonry wat�s are 12- inches wide. b. The concreie masanry foundation wal[s, with sol�d]y groufied coxes, will be structurally adequate to support the new tateral Eoads induc�d by the grade. The placemerrt of backfilI irr the existing basernent space sliould retfeve some she�5 at the existing foundation ura[! hy red�ccing the wa!! height and arnbatanced fi11 height � around the perimeter. Care shoutd be taken by thc corstructor zvlzen bac�Ilrng and � compacting the fill nof induce nezv stresses on the}'oundation. The conhactor is - responsihle for shorirrg the existing foundation waIls during demo of the existing fleor above as required. An increase in the grade of 1'-0" above fhe existing grade is aliouled to allvw for improued drainage. The contractor shnlI prnvide a minimum of � � � Prapased�temodel of Existing Residence Ulteig Pmject No.207.1528 3l4J200Q Page 4 7��r diarneter ancl�or boIts r�t 72" on-center spacing minimum per the Code aiong the yerimeter of the existing foundation faotprir�f. b. The new bearing poinfs alang the front wall at approximately 3'-Q" in from the exterior wails will require (�)-£uIt height #4 vertical reinfvrcing bar to be piaced in each of the thre� cores directly beneath the bearing studs. The top full course of existing znascmry to remain is to consist of a bond beam with (2)#4 rein#orcing bars running a minimum vE 3'-0" zn each directian from the bearing paint. c. The exishng strip foating witl be structuralty adequate to support the new laads as described above without underpinning or oversizing. The contractc�r is to #ield verify the existing foundation masonry walls are 12-inchea wide, ar►d the sfxip footing exte�ds a minimum o£ 4-inches on each side of the faundation walI. �. Duc to the heigltt of the wafer faUle trt this area, iE is recornt�rended tkat the slrrh-on- grade haue a uapor tetarder and granuiar material Uelow to better rmprove the �erformance and lifrspan of tlze new siaU-art grade floor. P$.O�SSIONAt OPI�„ION 3. It is our professional engineering opinion that the proposed remodel wil� be adequately supported by the existing Eoundahon pravided �he proposed mod.ifications are made to the existing foundation wall. The overat� condition of the structure is very gocxi cansidexing its age. It should be expected that the existing Eoundatian will set#le under tihe new loading coriditions and soiI backfilling introduced from the remod�l/addition. Refer t�o AET's soi! boring report for rnare detailed analysis regarding settletrrent issues and reeommendations. GE1tTERAt 4_ The in€ormation, observations, and opinians stated ir► this report are based on an � inspecfion made by Dan Sargeant, PE and Nick Hanson. The inspe�tiom m�sisbed o# a visual walk-through of the basement level observing exposed elements and those accessible without the removat of Einished materials. � 5. The observaEions and opinions expressed in this report are based on our professional engineering judgment and professi�nal practice, as well as the visual inspecfion. Notify the engineer immediaFely if field condi.tions vary from those described in Ehe repor�. � � i I � Proposed Kemodel of Existing Residence Ulteig Project No.247.1b28 2/29/2008 Page 5 inspecHon. Notify the engzneer immediately if field conditions vary fmm thosc desc�ribed in the report. 6. AIl work sha�I be done in acmrdance WF�I E�'liS document, standard industty practi�e, and the requiremenEs of the Code. 7. No other engineering was performed or requested for this project. If you have any qu�stions,please contact me. Sincerely, ,I�Iteig En ' �1'S I heceby ces�tify that this plan,spocit�catfon or report was ,+��.r � �e�epared by rae or euder my direct saperrision and tt�at I Dan Sa�rgeant,PE am a duly ticensed professional e�gineer under the laws of tbe Statc of ta. (�gh) � .� Dan Sargeant Minnesote RegFstration No.2(8t7 Date• 3-'S-o$ � � � t ; � ; ; > } s : 3 z �, i�� °7C".�t+j r� ��"�gR�1�. � � ' � . � � y .? ��,, � � a , .��-. � ,.� v . "� 5201 E.River Road February 29,2008 Suite 308 Minneapokis,MN 55421 Tom Ziegler rei 763-571-2500 2264 Shad ood Road F�763-571•I168 5'N' ,�,��g�� Orono,MN 55391 Subject: Engineer's Recommendation Deax Tom, The purpose of this letter is to offer recommendation for the possible drainage issues that may occur between your proposed building and the building at 225b Shadywood Road. It is my professional opiniort that the draintile shown on a survey dated january 25,2008 will work with some additional measures. The additional measures are as follows; -Add draintile leaders to pick up water from downspouts. This will prevent the inundation of this area due to rainwater direcfily from roof drainage. The leaders can be solid 4" draintile. This shaIl be a separate draintiie system from perforated draintile installed on praperty line. -Add area drain on ttie south end near the 24"walnut tree. This will serve two purposes;help prevent surface drainage from"ponding"in this area and provide an access to the draintile for cIeaning purposes, should it be needed. -As discussed on the phone,if the 24" walnut is rernoved,it should be repiaced with trees or shrubs that have a large evapotranspiration rate. A local nursery wiil have some suggestions. -The draintile ruru�iung along the properiy Iine should have the following properties. The trench should big a m;nim�n of 18"wide(typical b�bcat bucket width)and 24"deep. The ixench shall have a non-woven geotextile fabric inshalled. The cLraintile shall be 4"perforated with sock ta prevent sedimentation. The draintile shall be laid in the bottom of the txench az�d pea gravel shall fs1l the trench to withixi 4"of the final grade. The geotextile fabric sha11 covex the top of the pea gravel. 4" of native topsoil shall be placed over the geotextile fabric. (See schematic drawing) - Wheze draintile daylights to grade,a guard of soxne sort shall be installed to prevent"critters"from entering. It is my professional opinion that this will eliminate fihe possibility of a drainage problem between the two homes where the grade is limited. I hereby certify that this pXan,speci#ications or report was prepared by me or under my direct supervision and tttat I am a duly Registered Engineer under the laws of the State of Minnesota. Best Regazds, .�,� �� . Brian D.Robideau,P.E. MN Registxation#43382 . � . PROJECT NO. 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REPORT 2/29/08) / 1 DP ---------------------------i-----------i DAYLITE DRAIN 1 4" DRAIN TILE i i DP � ,,\ � AREA DRAIN r- �owNSPour � � � i i i i i � W ? j � � � � � � . . . . � . . . � J ' 1 j F- � I � Z n � � � I � � 2264 Shadywood Road ; � � � ' a i r � i tl� m � � i � i i i i � i i i pP i I � I j DOWNSPOUT � . i i i i DP i i I . I � � � � I I 1 �--------------- 4��PVC DRAIN TILE-------� � -----------�-------- � ------------------- -i � DAYLITE DRAIN . �O� �.��. � ��`� � �� CITY of ORONO � � ��t��y�� `� � r�, � �Fr MunicipalOffices � { �,`� �'�� G Street Address: Mailin Address: �,9 �� i� ,¢, B jt'Egg� 2750 Kelley Parkway P.O. Box 66 Orono, MN 55356 Crystal Bay, MN 55323-0066 March 10, 2008 Tom and Kathy Ziegler 14317 McGinty Road Wayzata MN 55391 SUBJECT: Zoning Application#08-3338 Dear Tom and Kathy: We are still waiting for the revised grading plan so the variance can go back to Council for final approval. I forwarded the draintile information that was with the building permit application to the City Engineer. He indicates you should provide a revised grading plan with the draintile installation shown on the proposed grading plan. Please call me at 952-249-4623 should you have any questions. Sincexel �'�j _/' v yn Turner ty Planner Telephone(952)249-4600 • Fax(952)249-4616 www.ci.omno.mn.us �� City of Orono � .;, � 2750 Kelley Parkway �"'�"� � P.O. Box 66 a ��' �• � �,, a��'v ti Crysta/Bay, MN 55323 � ,��`-1��w�,��,�~ (952) 249-4600 EBHD � Fax: (952) 249-4616 Date: March 14, 2008 To: Darren Amundsen From: Evelyn Turner 952-249-4623 eturner@ci.orono.mn.us Subject: Review of Revised Revised Grading Plan 08-3338 Tom and Kathy Ziegler 2264 Shadywood Road - Setback Variances Please review the enclosed grading plan. The application is waiting to go back to Council for final approval. I think Jean Olson from Soren Mattick's office emailed Tom a copy of the utility easement document so the legal description could be revised. Could so find out where that's at? ' 2335 Highway 36 W St.Paul,MN 55113 Te1651•636-4600 Fax 651•636-1311 www.bonestroo.com March 26, zoo8 �Bonestroo Ms. Evelyn Turner Planner City of Orono Post Office Box 66 Crystal Bay, MN 55323 Re: 2264 Shadywood Road File No. 000139-08000-1 Plat No.08-3338 Dear Evelyn: We have reviewed the revised grading plan dated 3-20-08, including draintile invert elevations, for the proposed home reconstruction. We have the following comments with regards to engineering matters: • As noted in our previous comment letter dated March 18, 2008, the City should obtain a revised utility easement over the sanitary sewer. • The information regarding the proposed draintile appears to be acceptable. If you have any questions please call me at(651) 604-4863. Yours very truly, Bonestroo ...--- -'� /�� Tom Kellogg