Extended Joint Floors: Concepts, Systems & Material Choices – This presentation provides an overview of extended joint slabs primarily used on industrial warehouse floors. An overview of the stresses that must be controlled in order to extend joints will be discussed. Two case studies of extended joints will be presented; one of which is the Twin Cities metro area. Learning Objectives: 1. Address the reasons why joints are extended. 2. Explain how shrinkage and thermal stresses have an impact on joint spacing. 3. Review the families of technology associated with extended joints. 4. Define joint widening and how this can impact slab performance.