There are 3 drawings in total, which are the construction drawings of a plant. The drawings include: roof beam system layout, roof reinforcement drawing, beam L1 reinforcement drawing, beam L2 reinforcement drawing, beam L3 reinforcement drawing, beam L4 reinforcement drawing, lintel reinforcement drawing, plant column reinforcement drawing, foundation layout and reinforcement drawing, ground beam reinforcement drawing, plant longitudinal section reinforcement drawing, etc.