Geotechnical Evaluation Report - Laserfiche WebLink

Home Browse Search

Kraus-Anderson Realty Company Project BL-11-01014 March 18, 2011 Page 17 E.3. Pavement Subgrade Proof-Roll We recommend that proof-rolling of the pavement subgrades be observed by a geotechnical engineer to determine if the results of the procedure meet project specifications,or delineate the extent of additional pavement subgrade preparation work. E.4. Equipment Support The recommendations included in the report may not be applicable to equipment used for the construction and maintenance of this project. Subgrade conditions in areas where it is intended to support shoring, scaffolding, cranes, pumps, lifts and other construction equipment should be evaluated prior to mobilization to determine if the exposed materials are suitable for equipment support, or if some form of subgrade improvement should first be performed. Consideration should be given to the affect that loads applied by such equipment may have on structures they bear on or surcharge- including pavements, buried utilities, below-grade walls, etc.We would be pleased to assist you in this evaluation. F. Procedures F.1. Borings The standard penetration test(SPT) borings performed in 2011 were drilled with a core and auger drill rig equipped with 3 1/4-inch hollow-stem augers.The borings were performed in general accordance with ASTM D 1586. SPT samples were taken at 2 1/2-foot intervals to a depth of 15 feet,then at 5-foot intervals to termination.Actual sample intervals and corresponding depths are shown on the Boring Logs in the Appendix. F.2. Material Classification and Testing F.2.a. Visual and Manual Classification The geologic materials encountered were visually and manually classified in general accordance with ASTM Test Method D 2488.A chart explaining the classification system is provided in the Appendix. Samples were sealed in jars and returned to our facility for review and storage. BRAUN I NTE BTEC