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DESIGN RECQhfMENDATIONS General The recommendations which are presented in the following sections of this report are provided to minimize potential problems associated with these on-site soils and at the same time provide for an economic development. Any unusual or unforeseen conditions encountered during site construction should be brought to our immediate attention to assure the appropriate recommendations are initiated. Site Preparations and Grading 1. All grading should be well compacted Es 2. All grading should be compacted to at least 90 percent relative compaction. " Relative compaction refers to the in-place dry density of soil expressed as a percentage of the maximum dry density determined by test method ASTM D1.557. Optimum moisture is the water content(percentage by dry weight)corresponding to the maximum dry density. 4. Observations and soil density tests should be performed during grading to assist the contractor in obtaining the required degree of compaction and proper moisture �✓) content. Foundations The maximum allowable bearing capacity,for compacted soil;'was determined for the site, and was found to be 2500 psf(pounds per square foot). The allowable bearing capacity may be increased by 113 for seismic consideration. For a lateral resistance, use 200 psf(pounds per square foot)per foot of depth. ' z ;+ The minimum footing depth should be 12 inches below lowest undisturbed adjacent grade for the proposed foundations In addition,the general recommendations presented below should be taken into consideration during the construction of this project. I. Prior to placing concrete,the foundation excavations should be inspected by a representative of this office. The purpose of this recommendation is to verify that the bearing soils actually encountered in the footing excavations are the same as those on which our recommendations are based and to verify compliance with the above recommendations. (5)