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Types of Rail Joints

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Tongue and Groove Joint

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This type of joint features interlocking rail ends, resembling the tongue and groove technique in woodworking, improving the joint's stability.

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Staggered Joint

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Staggered joints have rail ends that are offset on opposite sides of the track to help distribute the load and reduce wear.

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Fishplate Joint

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A fishplate joint involves bolting two fishplates to the rails on either side of the joint, providing a flexible and temporary connection.

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Protected Joint

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Protected joints have extra reinforcements, like tie plates or braces, to increase the stability and lifespan of the joint.

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Welded Joint

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Welded joints fuse the rail ends together to create a continuous rail, which eliminates the joint gap and helps in providing a smoother ride.

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Oblique Joint

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An oblique joint is cut at an oblique angle, with a design focus on reducing the rail end battering and improving the smoothness of the joint.

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Joggled Fishplate Joint

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This joint uses fishplates that are joggled or offset to hold the ends of rails tightly together, used in repair or when the rail end is damaged.

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Suspended Joint

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Suspended joints have the rail ends supported by a sleeper that does not directly support the joint, allowing for some vertical play.

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Expansion Joint

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Expansion joints allow for thermal expansion and contraction of rails, ensuring that track integrity is maintained under temperature variations.

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Bolted Joint

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Bolted joints connect the rail sections using bolts, and are a basic form of rail joint, but are less secure than welded joints.

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Compromise Joint

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A compromise joint connects rails of different sizes or profiles to each other, and is useful when transitioning between rail sections.

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Square Joint

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A square joint has rail ends cut square and often uses fishplates to connect. It's a basic joint type but prone to impact and wear.

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Step Joint

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Step joints involve connecting rail ends that overlap at different heights to transfer loads more efficiently between rail sections.

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Angle Joint

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Angle joints have the rails cut at an angle to each other and are jointed using fishplates, offering a compromise between square and staggered joints.

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Insulated Joint

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Insulated joints are non-conductive and used to interrupt the electrical current flow in rails, often for signaling or track circuit isolation.

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