Laserfiche WebLink
A TRUE COPY <br /> E <br /> f` <br /> 6. All casing pipe installations where the diameter is <br /> greater than 48 inches will require a preconstruction <br /> E: conference at the project site.-- <br /> 7. Preconstruction arrangements will be made with the <br /> office Chief Engineer at least one week prior to <br /> construction. A Railway inspector must be present <br /> during the entire construction of the casing pipe. <br /> The inspector will have complete authority over the <br /> project on the Railway's right of way. <br /> Z' <br /> S. All costs to provide inspection will be borne by the <br /> lessee. <br /> D. Tunnel liner requirements are as follows: <br /> n <br /> I. Alla applicable pp preceding sections will govern tunnel <br /> liner usage proposals. <br /> a _ <br /> 2. Tunnel liner plate will be 12 Pi, galvanized, and all <br /> bolts and nuts will be galvanized. <br /> 3. Live load will be based on E-80 Railway Loading using <br /> applicable formulae and computations performed by a <br /> registered professional engineer. The computation <br /> results will accompany the plans for review by the <br /> Office of the Chief Engineer. <br /> { 4. Grout holes will be provided at 10 foot intervals along <br /> the roof and sides. <br /> S. The tunnel liner jacking shield will protect 180 degrees <br /> Of the upper section and material removed to allow for <br /> a minimum 1:1 slope with a minimum 2.0 feet of <br /> undisturbed soil supporting the overburden. <br /> 6. The tunnel line installation will progress with <br /> sufficient manpower and supervision for around the <br /> clock construction until the liner is completed. <br /> E. Carrier pipeline specifications are as follows: <br /> 1. Reinforced Concrete Pipe <br /> a. Materials: Modified bell and spigot or tongue <br /> and groove in accordance with current ASTM <br /> Specification C76 Class IV for Railway <br /> strength pipe or current specification for <br /> Prestressed concrete pipe. <br /> J' <br /> 3 <br />