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<br />7. STEEL PIPE LINER <br /> <br />All equipment, labor, and materials to install approximately 244 lineal feet of 5.3' internal diameter steel pipe <br />final liner. The pipe will be installed in 5 tunnel sedions as identified below: <br /> <br />Station 23+97 to 24+03 <br />Station 32 + 12 to 33 + 58 <br />Station 38 + 16 to 38 + 25 <br />Station 38 + 45 to 38 + 58 <br />Station 52 + 73 to 53 + 33 <br /> <br />Square Timber <br />Square Timber <br />Square Timber <br />Square Timber <br />Steel Set Canopy <br /> <br />The work includes installing the pipe, control of water, constructing temporary bulkheads, filling the annuius <br />with cellular concrete, contact grouting between the pipe and cellular concrete, conventional void grouting <br />approximately 5' above the existing support (square timber and steel ribs) including required hole drilling, and <br />construction of shotcrete transitions and aprons. The work will include approximately 210 yards' of cellular <br />concrete, 200 yards' of conventional grout, and 20 yards' of shotcrete. <br /> <br />This item shall be paid for on the following basis: <br /> <br />A. 5.3' Diameter Steel Pipe: Per lineal foot installed and accepted by the Engineer. <br /> <br />B. Cellular Concrete in Annulus: Per cubic yard placed and accepted by the Engineer. <br /> <br />C. Conventional Void Grouting: <br /> <br />Per hook.up, which shall be defined as making all connections to pumps and grout <br />mixers required and for drilling of all holes required in order to inject grout under a <br />specified pressure into a particular grout hole approved by the Engineer. <br /> <br />Per sack of cement injected into grout holes and accepted by the Engineer. <br /> <br />D. Shotcrete Transitions and Aprons: Per cubic yard placed and accepted by the Engineer. This <br />item shall be measured per neat dimensions shown on plans. ' <br /> <br />8. SHOTCRETE AND ROCK BOLTS <br /> <br />All equipment, labor, and materials to install approximately 255 lineal feet of pattern rock bolts and placing a 3" <br />nominal layer of shotcrete from approximately spring line to spring line in various areas between Stations 20+00 <br />and 52+ n. The work includes installing approximately 210.6' long rock bolts with associated nuts, bearing <br />plates, 80 mine straps, and placing approximately 60 yards' of shotcrete. <br /> <br />This item shall be paid for on the following basis: <br /> <br />A. Rock Bolts and All Accessories: Per rock bolt installed and accepted by the Engineer. <br /> <br />B. Mine Straps: \ler mine strap installed and accepted by the Engineer. <br /> <br />C. Shotcrete: Per cubic yard placed and accepted by the Engineer. This item will be measured by <br />taking the area covered multiplied by the 3" neat design thickness. <br /> <br /> <br />Section 01025 - Page 3 of 7 <br />