- Structural analysis is an important topic in civil engineering optional subject as it involves the study of various methods to analyze and design structures.
- It carries more marks as it forms the basis for understanding the behavior of structures under different loads and conditions.
- Topics such as determinate and indeterminate structures, bending moment and shear force diagrams, influence lines, and structural stability are included in this subject.


- Building materials and construction is another significant topic in civil engineering optional subject.
- It carries more marks as it covers the study of various materials used in construction such as cement, aggregates, bricks, timber, steel, and concrete.
- Topics like properties of materials, their uses, construction techniques, and quality control measures are included in this subject.


- Geotechnical engineering deals with the study of soil mechanics and its application in civil engineering.
- It carries more marks as it involves the understanding of soil properties, soil classification, bearing capacity, compaction, and slope stability.
- Topics such as soil exploration, foundation design, earth pressure theories, and soil improvement techniques are included in this subject.


- Environmental engineering is an important topic in civil engineering optional subject as it focuses on the preservation and protection of the environment.
- It carries more marks as it covers topics like water supply and wastewater treatment, air pollution control, solid waste management, and environmental impact assessment.
- The knowledge of environmental laws, regulations, and sustainable development practices is also required in this subject.


- Transportation engineering deals with the planning, design, and maintenance of transportation systems.
- It carries more marks as it includes topics like highway engineering, traffic engineering, transportation planning, and railway engineering.
- Knowledge of geometric design, pavement design, traffic flow analysis, and transportation infrastructure management is required in this subject.


- Water resources engineering focuses on the management and utilization of water resources for various purposes.
- It carries more marks as it covers topics like hydrology, irrigation engineering, dam engineering, and water supply systems.
- Understanding of rainfall-runoff modeling, water distribution networks, groundwater hydrology, and flood control measures is required in this subject.

Overall, these topics mentioned above carry more marks in the civil engineering optional subject as they cover the fundamental concepts and applications in the field of civil engineering.