JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. AASHTO LFD Topics available in this section include: Structural Modeling Dead Loads Live Loads Distribution of Loads Resistance Factors/Strength Capacity Reduction Factors Full Beam and Half Beam Kern Points Effective Flange Width Strand Groups Prestress Losses Derivation of Closed-Form Solution for Prestress Loss Due to Elastic Shortening Transformed Section Properties Elastic Shortening Transfer and Development Length Calculation of Strand Area and Location Allowable Stresses in Concrete Vertical Shear Horizontal Shear Reaction Moment Capacity According to the AASHTO Method Moment Capacity by Strain Compatibility Cracking Ratio Automatic Straight Strand Pattern Generation Automatic Draped Strand Pattern Generation Automatic Debonding and Critical Point Midspan Shielding Negative Moment Reinforcement Positive Restraining Moments (LFD) Camber and Deflections Detensioning Load Rating Parent topic: Theory