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  1. sngengtip

    Expansion joint for electrical duct bank and vault.

    SlideRuleEra: Thanks for the recommendation. We have used similar method. I am looking for some kinda of coupling joints such that the vaults wall will not be damaged. We have 3 circuits of high voltage, underground transmission and distribution conduits, some are encased in concrete duct...
  2. sngengtip

    Expansion joint for electrical duct bank and vault.

    I am looking for design guidance/details on expansion joints that can be used at intersection of concrete duct and electrical vault to prevent severing the conduits due to differential settlement during an earthquake. Any recommendations are very much appreciated.

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