Reinforced concrete material properties, the ACI 318 strength design method and strain-based φ factors, flexural design of beams and one-way slabs, shear design and stirrup spacing, column axial-moment interaction, and reinforcement development length and detailing.
Reinforced concrete pairs a material that is strong in compression but essentially negligible in tension with steel reinforcement that carries the tension concrete cannot, and the entire ACI 318 strength design method is built around that division of labor. This module works through the method the way an engineer actually applies it: how f'c and fy define the composite section, how the strength reduction factor φ is calibrated by strain-based failure mode rather than assigned as one blanket number, and how that same logic carries through flexure, shear, columns, and detailing.
By the end of this module you should be able to explain why a column's capacity is checked against a full axial load-moment interaction diagram rather than a single number, and why a reinforcing bar cannot simply be cut off wherever the calculated moment diagram says the required steel drops to zero. Module 6's steel design content mirrors this module's limit-state and strength-reduction-factor logic from the steel side of the same LRFD framework.