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<br /> <br /> 11 Parsons-1-01 <br /> <br /> <br />8.0 CONSTRUCTION CONSIDERATIONS <br />Based on our field exploration program, earthwork can be performed with conventional <br />construction equipment. <br />8.1 TEMPORARY DEWATERING <br />Groundwater was not encountered within our exploratory boring. Based on the anticipated <br />excavation depths, it is unlikely that dewatering will be required during construction. <br />8.2 CONSTRUCTION SLOPES <br />The temporary excavation side walls may be cut vertically to a maximum height of 3 feet. <br />Surcharge loads should be kept away from the top of temporary excavations a horizontal <br />distance equal to at least one-half the depth of excavation. Surface drainage should be <br />controlled along the top of temporary excavations to preclude wetting of the soils and erosion <br />of the excavation faces. <br />Where space permits, and providing that adjacent facilities are adequately supported, open <br />excavations may be considered. In general, unsupported slopes for temporary construction <br />excavations should not be expected to stand at an inclination steeper than 1:1 <br />(horizontal:vertical). The temporary excavation side walls may be cut vertically to a height of <br />3 feet and then laid back at a 1:1 slope ratio above a height of 3 feet. <br />Surcharge loads should be kept away from the top of temporary excavations a horizontal <br />distance equal to at least one-half the depth of excavation. Surface drainage should be <br />controlled along the top of temporary excavations to preclude wetting of the soils and erosion <br />of the excavation faces. Even with the implementation of the above recommendations, <br />sloughing of the surface of the temporary excavations may still occur, and workmen should be <br />adequately protected from such sloughing. <br />8.3 POST INVESTIGATION SERVICES <br />Final project plans and specifications should be reviewed prior to construction to confirm that <br />the full intent of the recommendations presented herein have been applied to design and <br />construction. Following review of plans and specifications, observation should be performed <br />by the geotechnical engineer during construction to document that foundation elements are