2005-P08673 - new house - Laserfiche WebLink

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�EC-15-2004 09 :54 AM H. M. BOWER S28 T24 4643 P. 05 t925 L�keriew Terrea,Oronn MN � —5— debris and bouiders(3"+)prior to structure or fill placement. Hased upon soil boring results, this would app�ar to reyuire exc�vation depths/elevations as faUows: p�R�ll . Elev Boring 1 10' 1003'/z± Boring 2 9' 1004'/4±(water at 7�/2') Boring 3 5' 1008`/z± Boring� 12' 1000`!z (water at 7'la) Boring 5 4'/; 1009'/,± Variations are possible at other locations in the building pad �rea. This correction invatves not only the old fill and organic soil but, at three borin� locations, 2'-3..5' of overly 4oft clay just below in the northwest porti.on. It is clear that, to minimize cost and di�iculty, the proposed residence should�e located as far s�utheast as poss�ble. The dif�icuity here is that the available uplsnd building area is more restricted. Some wetland �illing, alteration and/or replacement may be required. Also,there is an existing power service lit�e running aeross the southeast portioc�of the site. At two of the locations, the excavations will be below groundwater, but it may eontrollable by mere sumping. The�xcavation contractor should decide for himself the nature and extend of dewatering necessaty. The resulting void area shauld then refiEied with n led (base of exeavation ins�cted and doeumented, f ll compacted and tested) up to . footing and slab levels. It should again be emphasized, however, that the estimated depths af excavation of unsuitable soil given abc�ve are preliminary estinnates based upan random test Incations. These should be considered preliminary estimates only, tc� be vetified by actual excavations. In fact,for construction quantity purposes,a small amount of additional estimated excavation depth shoutd be added to that given in the logs to conseroa�ively allow for variations and far inadvertent over-excavaiions which are impossible to avoid when power machinery is employed far the purpose. Altemative foundation p�ssi�il�ties are fiuther discus4ed in#4 below. Excavated organic material,uncontrailed fill,soft clay soil,wet unstabie soil or other soi] contaminated with topsoil, vegetation, etc, should be disposed of oi�site, or in landscaping ar�as, where the bearing of weight will not be required. There app�ars to be no opportunity to saivage soil from the excavation for re-us� as controlled fill as ail samples reeover� to date is contaminated with organic snil �r is actually organic xn nature. Most likely, ihe earthwork contractor will import�ill for use as controlled fill. Refer to subsequent gections for more detsiled and specific recomrnendations fnr site correcfiion reearnrnendations for each structural component and for foundation�Itematives. 3. F n For purposes of proposcd construction, foundations and fill to support foundations must . rest upon a�nd over mineral(non-organic) soils of adequat� b�aring value. For single family residences, x bearing capacity of 2Q00 pounds �r square foot (ps� is usually targeted, although most residence.g actually bear much less. This analysis ofsoil for foundation pwposes is based upon a likely design eonfigur�tion and location and the estim�ted �rades assumed abvve. If there is arry significant deviation