Project Packet - Laserfiche WebLink

Home Browse Search

STOA!~(') Stork Twin City Testing Corporation Materials Technology Proposed New Residence at 1635 Bohns Point Road Orono, Minnesota Stork Twin City Testing Corporation Project #TCT006405P Page 7 of 11 We recommend delaying actual footing construction for approximately three weeks after earthwork is completed. This delay is recommended to allow the fill placed to raise the site grades to allow the fill to stabilize due to water wicking up within the embankment. The actual duration of the footing construction delay should be evaluated at the time of construction by the geotechnical engineer. Upon completion of the site preparation as outlined above, the foundation should bear at frost protection depth, on the engineered fill. We recommend that the foundations be designed for a maximum net allowable soil bearing pressure of up to 2000 pounds per square foot. A factor of safety of at least 3.0 against foundation shear failure was considered in the above-recommended design bearing pressure. Based on the above recommendations, we estimate total and differential settlement should not exceed about 1 inch and ½ inch, respectively. All perimeter foundations in heated building space should be placed at a minimum depth of 42 inches below exterior grades for frost protection. Interior footings may be placed at any convenient depth below the floor slab. In unheated areas where deeper frost penetration may occur, we recommend that the foundations have a minimum soil cover of 60 inches for frost protection. 4.3 Floor Slab Recommendations All backfill placed underneath slab areas, including within utility runs, should be compacted to at least 98% of the Standard Proctor. We recommend the upper six inches of the subgrade immediately below the floor consist of pea-gravel or clean washed sand fill. The pea gravel or clean washed sand fill will help reduce capillary moisture transmission to the slab. The engineered fill recommended in Section 4.2 should be suitable material for this use. lnfonnatron and statements in this report are dertved from material, infonnation and/or specfficauons furnished by the client and exclude any expressed or implied warranties as 10 the mness of tile materfal tested or analyzed for any-particular purpose or use. This certificate or report is the confidenlial property of our client and may not be used for advertising purposes. Tills certificate or report shall not be reproduc.er:I except In full, with.Out written approval of this laboratoiy and shall be signed or otherwise approved by authorized staff members only. The recording or false, ficlllious or fraudulent statements or entries on this document may be punished as a felony under Federal staLUes including Federal Law Title 18, Cha pier 47. This document conlains technical dala whose export and re-exporVre-transfer is subject to control by the U.S. Department of Commerce under the Exp0rt Admlnlsttation Act and Ure O:port Adrninisltallon Regulations. ihe department of Commerce's prior written approval is required for the export or re-export/re-- transfer of such technical informl:ltian to any foroign person, foreign enHty or foreign organization whether in the United states or abroad. EAR·CONTROLLEO DATA.