The structural construction drawing of a brick and concrete office building for storey adding and transformation is designed as follows: the structural construction drawing of a brick and concrete office building for storey adding and transformation was originally a three storey brick and concrete structure, and now the fourth floor and pitched roof are added. In this design, the cast-in-place beam and slab of the fourth floor are designed as the roof without access. Drawings include: new floor plan, design description, third floor reconstruction plan, shelf plan, section, roof drainage plan, elevation, fourth floor reinforcement drawing L-13、14、QL-4、WL-1、2、 There are 12 drawings in total, including sloping roof formwork drawing and sloping roof reinforcement drawing.