Twin Tie Plates

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Twin Tie Plates are used for frogs, guard rails, and behind the heel of switches. They are produced to standard AREMA designs and are very versatile. The slotted hole allows them to ˜t almost any rail section. Their use in pairs, side by side on the same tie, allows them to adapt to different tie spacings, frog angles, etc. The standard AREMA thickness is 3/4 inches , but a 5/8 inches thickness is common for industrial trackwork. Two typical applications are shown below.#1#2#1#2#1#2#1#2#1#2#1#2#1#2#1#2#1#1#1#1#1#1#1#1#1#1#1#1 Note: Square Spike Holes (or Hooks) Must Always be on Outside of RailApplication of Twin Tie Plates No. 1 & No. 2 Behind the Heel of a SwitchApplication of Twin Tie Plates No. 1 & No. 2 on Bolted Rigid FrogNote: Twin Tie Plate No. 2 (or Type LR) to be used on Heel of Frog onlyWhere it is Possible to Spike Between RailsSwitch PointSwitch PointTWIN TIE PLATES Hook Twin Tie Plates are manufactured per AREMA plan 241. Hook twin tie plates generally come with three types of hooks: Low – Type L, Low Reverse – Type LR, and High – Type H. Type H plates do not have the slotted hole and have a higher hook designed to ˜t over the base of a manganese frog. If the hook of a hook twin tie plate interferes with a joint bar, the hook can be cut off or bent to a vertical position.L 2 inches 4-7/8 inches 3 inches 1 inches 3/4 inches 1 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 1 inches 14° 3/4 inches 3/4 inches 3/4 inches 3/4 inches 4 inches H 3/4 inches 1 inches 14°HL 2 inches 4-7/8 inches 2-1/8 inches 1 inches 3/4 inches 1-3/8 inches 1-3/8 inches 4 inches 1 inches Mark L and HMark LR 3/4 inches 4 inches 4 inches 4 inches 3/4 inches 2 feet – 0-1/2 inches 2 feet – 0-1/2 inches 2 feet -6 inches 3/4 inches 2 inches 4-3/4 inches 2-1/2 inches 3/4 inches 2 inches 4-3/4 inches 2- 1/2 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 2 inches 4-3/4 inches 1-3/4 inches 3/4 inches 3/4 inches Type 1 TWIN TIE PLATESHook Twin Tie Plates are manufactured per AREMA plan 241. Mark L H Wt. (lbs.) L23 23 inches 9/16 inches 18.8 L27 27 inches 9/16 inches 22.2 L31 31 inches 9/16 inches 25.6 H23 23 inches 15/16 inches 19.1 H27 27 inches 15/16 inches 22.5 H31 31 inches 15/16 inches 25.9 LR23 23 inches 9/16 inches 18.8 LR27 27 inches 9/16 inches 22.2 LR31 31 inches 9/16 inches 25.6 Flat Twin Tie Plates aremanufactured as shown. Weight (lbs.) Type 5/8 inches thick 3/4 inches thick No. 1 16.9 20.3 No. 2 16.9 20.3 No. 3 20.8 24.9 Type 2 3/4 inches 4 inches 4 inches 4 inches 3/4 inches 2 feet – 0-1/2 inches 2 feet – 0-1/2 inches 2 feet -6 inches 3/4 inches 2 inches 4-3/4 inches 2-1/2 inches 3/4 inches 2 inches 4-3/4 inches 2- 1/2 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 2 inches 4-3/4 inches 1-3/4 inches 3/4 inches 3/4 inches Type 3 3/4 inches 4 inches 4 inches 4 inches 3/4 inches 2 feet – 0-1/2 inches 2 feet – 0-1/2 inches 2 feet -6 inches 3/4 inches 2 inches 4-3/4 inches 2-1/2 inches 3/4 inches 2 inches 4-3/4 inches 2- 1/2 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 2 inches 4-3/4 inches 1-3/4 inches 3/4 inches 3/4 inches Hook Twin Tie PlatesFlat Twin Tie PlatesL 2 inches 4-7/8 inches 3 inches 1 inches 3/4 inches 1 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 3/4 inches 1 inches 14° 3/4 inches 3/4 inches 3/4 inches 3/4 inches 4 inches H 3/4 inches 1 inches 14°HL 2 inches 4-7/8 inches 2-1/8 inches 1 inches 3/4 inches 1-3/8 inches 1-3/8 inches 4 inches 1 inches