This document contains information about the design of reinforced concrete footings, including: - Unit 5 of a course covers limit state design of footings such as wall footings, axially loaded rectangular pads, and combined rectangular footings. - Sample problems and their answers related to footing design are provided, covering topics like soil bearing capacity, minimum depth, and steel distribution. - Factors to consider in footing design include soil properties, structure type and loads, settlement, and cost. Footing types like trapezoidal and combined are discussed.