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1. AI1 threaded fitt:ings on U.L. labFled tanks shall be of a <br />material of construction consistent with the requirements of <br />the U.L. Label. All fittings to be supplied with cast iron <br />plugs. <br />2. All threaded fittings are 4" in diameter and shall be half <br />couplings, reducers are to be used for smaller sizes where <br />required. <br />3. 5trength - NPT Fittings shall withstand a minimum of 150 foot - <br />gounds of Tork and 1,000 pounds bending each with 2:1 safety <br />factor. <br />F. Liftinq Lugs - Provide lifting luqs on tank. Lugs shall be capable <br />of withstanding weight of tank with a safety factor of 3 to 1. <br />PART III INSTALLATIGN <br />3.01 Installation and testing <br />A. Tank sha.ll be tested and installed according to the current <br />manufacturer's installation instructions provided with the <br />tank. <br />B. Ballast Backfill Material - Shall be naturally rounded agyregate <br />1/4" nominal size, rar.ging from 1/8" to 3/4" diameter, c2ear_ <br />and free of foreign materials. <br />TS-3 <br />