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<br />R403.1.7 Grounding Electrodes. <br /> When concrete reinforcing bars are installed in concrete footings, the <br />following requirements shall be met to provide for a grounding electrode system: <br />1.Uncoated No.4 reinforcing bar installed not less than 3 inches from the bottom of the <br /> footing and not less than 20 feet in length encased with a minimum of 2 inches of <br /> concrete. <br />2. An uncoated No. 4 reinforcing bar stubbed up at least 12 inches above the floor plate <br /> line and tightly attached to the reinforcing bar located in the footing. The spliced lap of <br /> the stubbed up bar to the footing bar shall be a minimum of 12 inches. <br /> <br /> <br />555 Court St. NE ~ P.O. Box 14500 ~ Salem, Oregon 97309-5036 ~ Phone (503) 588-5147 ~ Fax (503) 588-7948 <br /> <br />Page 2 of 2 <br />