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for #3 rebar and drilled .218 for ..4-20 self tapping grounding screw and galvanized or painted for protection. 1 - Pole and foundation design based on the following criteria: a) Uniform building code exposure B or C and 1.5 stability factor. b) Vertical soil pressure of 2000 pounds per square foot. BubbleLevelGround PoleMust BeVertical InAll DirectionsWithin .19 InchesAt Top (0.3.) c) Lateral soil pressure of 400 pounds per square foot. d) Concrete compressive strength of 2500 pounds per square