WisDOT Bridge Manual Chapter 18 – Concrete Slab Structures July 2021 18-1 Table of Contents 18.1 Introduction ...................................................................................................................... 4 18.1.1 General..................................................................................................................... 4 18.1.2 Limitations ................................................................................................................ 4 18.2 Specifications, Material Properties and Structure Type .................................................... 5 18.2.1 Specifications ........................................................................................................... 5 18.2.2 Material Properties ................................................................................................... 5 18.2.3 Structure Type and Slab Depth................................................................................. 5 18.3 Limit States Design Method ............................................................................................. 9 18.3.1 Design and Rating Requirements ............................................................................. 9 18.3.2 LRFD Requirements ................................................................................................. 9 18.3.2.1 General ............................................................................................................. 9 18.3.2.2 Statewide Policy................................................................................................ 9 18.3.3 Strength Limit State ................................................................................................ 10 18.3.3.1 Factored Loads ............................................................................................... 10 18.3.3.2 Factored Resistance ....................................................................................... 11 18.3.3.2.1 Moment Capacity .................................................................................... 11 18.3.3.2.2 Shear Capacity ........................................................................................ 13 18.3.3.2.3 Uplift Check ............................................................................................. 13 18.3.3.2.4 Tensile Capacity – Longitudinal Reinforcement ....................................... 13 18.3.4 Service Limit State.................................................................................................. 14 18.3.4.1 Factored Loads ............................................................................................... 14 18.3.4.2 Factored Resistance ....................................................................................... 14 18.3.4.2.1 Crack Control Criteria .............................................................................. 15 18.3.4.2.2 Live Load Deflection Criteria.................................................................... 15 18.3.4.2.3 Dead Load Deflection (Camber) Criteria .................................................. 15 18.3.5 Fatigue Limit State.................................................................................................. 16 18.3.5.1 Factored Loads (Stress Range) ..................................................................... 16 18.3.5.2 Factored Resistance ....................................................................................... 17 18.3.5.2.1 Fatigue Stress Range .............................................................................. 17 18.4 Concrete Slab Design Procedure ................................................................................... 18 18.4.1 Trial Slab Depth ...................................................................................................... 18 18.4.2 Dead Loads (DC, DW) ........................................................................................... 18
Chapter 18 – Concrete Slab Structures
Apr 28, 2023
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