This chapter presents a comprehensive treatment of chute design for the feeding and transfer of bulk solids, with emphasis on rapid, thin stream flow conditions typical of modern high capacity conveying systems. Fundamental concepts of boundary friction, cohesion, adhesion, and wear are introduced to explain their influence on flow behaviour, build up, and blockage. Classical mechanics-based chute flow models are developed for straight, curved, converging, and inverted chute geometries, including expressions for equivalent friction, continuity, and equations of motion. Analytical and approximate solutions are presented to predict stream velocity, thickness, and conditions for self cleaning flow. The chapter also examines abrasive and impact wear mechanisms, granular jump phenomena, and the interaction between chute geometry and conveyor belt wear at feed points. Worked examples illustrate the influence of drop height, chute curvature, and profile selection on flow performance and wear. While acknowledging the widespread use of numerical simulation methods such as DEM, the chapter emphasises the continuing importance of classical theory as a sound basis for effective and robust chute design.