The primary ethical responsibility of civil engineers is to ensure the safety and welfare of the public. This means designing and constructing structures that are safe and functional, and taking into account the potential impact of their work on the environment and society.

Impartiality is the ethical principle that engineers should avoid conflicts of interest. This means that they should not allow their personal or financial interests to influence their professional judgment.

Civil engineers may face a variety of ethical dilemmas in their practice, including choosing between using cheaper but less sustainable materials or more expensive but more sustainable materials, deciding whether to accept bribes from contractors, and choosing between working on projects that will benefit wealthy clients or projects that will benefit disadvantaged communities.

Honesty is the ethical principle that engineers should be honest and truthful in their professional dealings. This means that they should not lie, cheat, or mislead their clients, colleagues, or the public.

Sustainable design practices that civil engineers can adopt include using recycled materials in construction, designing buildings to be energy-efficient, and using renewable energy sources to power infrastructure.

Respect is the ethical principle that engineers should respect the rights and interests of others. This means that they should treat others with dignity and consideration, and avoid causing harm to them.

Social responsibilities that civil engineers have include volunteering their time to help build affordable housing, donating money to charities that support engineering education, and mentoring young engineers.

Accountability is the ethical principle that engineers should be accountable for their actions. This means that they should be willing to take responsibility for their mistakes and learn from them.

Ethical issues that civil engineers may face when working on a construction project include deciding whether to use cheaper materials that may compromise the safety of the structure, choosing between hiring qualified workers or using cheaper but less experienced labor, and deciding whether to pay workers a fair wage or a lower wage to save money.

Social responsibility is the ethical principle that engineers should strive to improve the quality of life for all people. This means that they should consider the social and environmental impacts of their work and take steps to minimize negative impacts.

Sustainable construction practices that civil engineers can adopt include using recycled materials in construction, designing buildings to be energy-efficient, and using renewable energy sources to power infrastructure.

Justice is the ethical principle that engineers should be fair and just in their dealings with others. This means that they should treat everyone equally and avoid discrimination.

Ethical issues that civil engineers may face when working on a transportation project include deciding whether to build a new highway through a sensitive environmental area, choosing between building a new road or improving existing public transportation, and deciding whether to charge tolls on a new highway or make it free to use.

Professionalism is the ethical principle that engineers should be committed to excellence in their work. This means that they should strive to produce high-quality work and maintain a high level of professional conduct.

Ethical issues that civil engineers may face when working on a water resources project include deciding whether to build a new dam that will displace local communities, choosing between building a new reservoir or implementing water conservation measures, and deciding whether to discharge wastewater into a river or treat it before discharge.