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BOEING EVERETT SECTION 34 11 10 <br /> NEW RAIL SPUR TRACKWORK-GENERAL REOUIREMENTS <br /> WORK ORDER 10•305 <br /> 27. Subgrade-The finished embankment or excavalion below the level of sub-bal'ast. <br /> 28 Superelevation- In curved track,the amount that the outside rail is raised abo.e the inside <br /> rail. The inside rail elevation is maintair�ed at the PGL top of rail profile. <br /> 29 Switch, Double Tongue - A wheel ilange dellecting device consisting essentially ot lwo <br /> movable switch tongues, <br /> 30. Switch, Point oi- The tip oi the tapered end ot a swilch point rail; the end of e switch rail <br /> farthesl(rom the frog. <br /> 31. Switch Poinl, Swilch Rail -The machined movable poinl rail of a splK switch. <br /> 32 Switch, Split -The common type ol lrack switch consisting of two planed swilch point reils <br /> and their associated stock rails and hardware. <br /> 33 Switch, Tongue-A switch piece device consisting of a movable tongue, designed tor use <br /> with another tongue device. <br /> 34. Switch, Undercut -A switch in which the stock rails are undercul to mate with or nest lhe <br /> switch rails so lhat the actual point of the switch rail head does not protrude beyond the <br /> originat outline of the stock rail's head ouUine,commonly called a Sampson switch poinl <br /> 35. Top of Rail(T/R)-That portion o1 the running rail that follows the PGL. Tap of reil elevelion is <br /> measured at Ihe cenlerline of the rail. <br /> 36 Tle or Cross tie-PoAion oi lrack structure placed in baliast perpendicular to rail to hold lrack <br /> gauge and rail alignmenL Ties may be made ot limber or concrele. <br /> 3Z Track, Ballasted-Track cnnstruded o(ballast,crossties,tie plates, raiis and fastenings. <br /> 38 Track, Embedded - Track designed for joint usage with roadway vehicle traffic, wRh rails <br /> embedded in reinforced concrele Irack slab. <br /> 39 Track, Spur-Track where reil road cars are left tor loading and unloading. Spurs are also <br /> used sometimes for railroad car storage. <br /> 40 Track Foot - Unit of ineasuremenl(or all types of track conslruction; measured along the <br /> centerline of treck. <br /> 41 Track, Primary-A revenue sernce lrack designated by route name and direclion. <br /> 42 Turnoul-A track arrangement consisting of a switch,frog,stak rails,closure reils,and guard <br /> ratls enabling rail vehlcles to be diverted irom one track to another. <br /> 43 Turnout Number-The number corresponding to the number ol the trog used in a Wrnout. <br /> 44 Working Drewings —Contractor prepared drawings to convey workplan iniormation for the <br /> installalion of ihe component part of the lrackworks andlor structures. <br /> Permit Se� 34 71 10-3 <br /> Seplemher 23 2011 <br />