2009-00635 - addn/remode/repair - Laserfiche WebLink

Home Browse Search

� �TO(�I�; Stork Twin City Testing Corporation Materials Technology Proposed Addition at Residence 965 Edgewood Hills Road Page 6 of 9 Orono, Minnesota Stork Twin City Testing Corporation Project #3106831 The recommended depth of suitable soil is approximate and may vary between borings. Contingency should be put in the project budget for excavations that extend below anticipated subcut depths. The actual excavation depth should be determined in the field at the time of construction. Test pitting should be performed by the contractor in the presence of a geotechnical engineer or their representative in order to help verify depths of subcuts. The excavation bottoms should be observed by the geotechnical engineer to document the exposed soil conditions. Where the excavation extends below bottom footing elevation if applicable, we recommend providing lateral oversize equal to the depth of fill required to attain bottom of footing elevation (i.e. 1 V:1 H lateral oversize). This oversizing is necessary to support the lateral loads exerted by the footings through the fill system. An illustration of this oversizing is provided in the Appendix. After the recommended excavation, engineered fill should be placed to attain final grades. Below foundations and floor slabs, the engineered fill should be compacted to at least 95% of the Standard Proctor maximum dry density (ASTM D 698). The moisture content of the engineered fill should be maintained within 3% below and the optimum as determined by the Standard Proctor test. Fill compacted with heavy, self-propelled compaction equipment should be placed in lifts not exceeding 12 inches in loose thickness. Fill compacted with hand-operated compaction equipment should be placed in lifts not exceeding 6 inches in loose thickness. We recommend positive surface drainage should be maintained so water is not allowed to pond on site and promote soil disturbance. If soil becomes disturbed, additional excavation may be required. This agreement shall be governed exclusively by the general terms and conditions of sale and performance of testing services by Stork Twin City Testing,Inc.a North Carolina business corporation("TCT")dd.02/04/2001. In no event shall Stork Twin City Testing,Inc.be liable for any consequential,special or indirect loss or any damages above the cost of the work. Payment is due within 30 days of invoice.