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U <br />2. The casing pipe must be installed: :at least 5.5 feet <br />below bottom of -tie - <br />3. jacking pit location must be at least 30.00 feet from <br />centerline of near track for pit:down to 20 feet below <br />grade. The pit will be protected with adequate <br />sheeting, bulkheads, and sidOwalls to protect the <br />Railway's roadbed. Barricades and lights will be set <br />around the pit for protection.. <br />C. Casing pipe Specifications are as follows`r <br />1. Casing pipe shall have a minimum diamater of 2.0 inches <br />and size 2.0 through B:o inch diameters must be gal- <br />vanized and stands=d weight isTk Specifications A53, <br />Grade B. Thread coupling is allowed. <br />2. Casing pipe 6:.0 and S.0 inch diameters may be used <br />complying with C-3. <br />3. Casing pipe shallbe in accordance with current ASTM <br />Specification A139 and be protected by a: black <br />bituminous coat=ing for PROTECTt0.v AGAINST CORR08T09. <br />Wall thickness shall be as follows <br />DIAMETER TFiICKNEsS' <br />Cinches) (nches1 <br />6 - <br />16 <br />1/4 <br />18 -- <br />20 <br />5/16 <br />22 - <br />24 <br />3/8 <br />26 - <br />28 <br />7/16 <br />30 - <br />34 <br />1/2.1 <br />36 - <br />38 <br />9f16 <br />40 - <br />4.8 <br />5/8 <br />52 - <br />56 <br />1;3 f 16 <br />60 - <br />66 <br />3/4 <br />72 - <br />T8 <br />13/16 <br />84 - <br />19.0 <br />7/$ <br />96 - <br />1Q2 <br />15/16 <br />108 - <br />114_ <br />1 <br />120 <br />1-0 <br />4. All casing pipe joints will be welded in accordance <br />with alsc Specifications, Section All jaiit <br />.. <br />welds will be ,full penetration. <br />S. At no time will :Construct.ion interfere- with the normal <br />=:r and :saf;a- operation of the- Rail�iay- No cc�nst�et on, <br />manpover, or equipmentwill enter the rij, of way <br />r' Beyond :safety ala`arance- limits of 20..1 feet `from the <br />centerline -of. near track:. <br />2 <br />