The document discusses three case studies of failed construction projects and identifies reasons for their failures such as lack of proper inspection, use of substandard materials and workmanship, inadequate design, and failure to follow engineering specifications. Specifically, it examines a collapsed building in Khed that did not use vibrators or proper concrete mixes, an overhead water tank project in Uttar Pradesh with issues in planning, materials, and maintenance, and a building in Boston that experienced collapse due to subcontracting without proper oversight and removing shoring too soon.