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Geotechnical Engineering Investigation Page 21 of 24 New Residential Subdivision 2706 Pock Lane Stockton, CA 95205 March 30, 2021 CTE Job # 25-1097G below. Based on our previous experience on similar sites we have assumed traffic indices (TI's) of 5.0 and 6.0 for any potential proposed parking and drive isle areas. The pavement design is based on California Department of Transportation (CalTrans) Highway Design Manual and on anticipated traffic indices as indicated below. If these assumptions are incorrect, this office should be contacted to obtain further pavement recommendations. TABLE 5.9 RECOMMENDED PAVEMENT SECTIONS Asphalt Pavements Traffic Area Assumed Preliminary AC Class II PCC Pavements*,On 8"of Class 2 Traffic Subgrade Thickness Aggregate Base Subgrade Materials(inches) Index "R"-Value inches Thickness inches Moderate Truck 12 Loading and 6.0 50 3.5 4 6.0 Drive Areas Parking and light Auto 5.0 50 3.0 4 6.0 Drive Areas *Concrete should have a modulus of rupture of at least 600 psi Concrete pavements could be reinforced with nominal rebar, such as minimum#4 bars spaced no greater than 24 inches, on center, both ways, placed at above mid-slab height, but with proper concrete cover. Alternatively, concrete pavements can be unreinforced provided they are constructed with expansion/contraction and/or construction joints spaced no greater than 24 times the pavement thickness, both ways, in nearly square patterns, and are detailed in general accordance with ACI Guidelines. Doweling of concrete pavements at critical pathways is also recommended. Asphalt paved areas should be designed, constructed, and maintained in accordance with the recommendations of the Asphalt Institute, or other widely recognized authority. Concrete paved areas should be designed and constructed in accordance with the recommendations of the American Concrete Institute or other widely recognized authority, particularly with regard to thickened edges,joints, and drainage. The Standard Specifications for Public Works construction ("Greenbook") or Caltrans Standard Specifications may be referenced for pavement materials specifications.