39/3334–6FE Reference Handbook 10.4 · Ethics · Professional Practice

Handbook formula

Standard of Care and Professional Liability

Engineers are judged against the ordinary standard of care of reasonably prudent peers — not perfection. Liability follows duty, breach, causation, and damages. Contract claims and tort claims are distinct; limitation-of-liability clauses are construed strictly.

Obligation to the client/public
Failure to meet the standard of care

Step-by-step solved example

A design meets code but a reasonably careful PE would have flagged a known local soil risk. Is that a breach?

  1. 1. Standard

    Code is a minimum, not the whole standard of care. Local practice and known hazards count.

  2. 2. Conclusion

    Yes — a peer would have investigated, so a jury can find breach even with a code-compliant drawing.

Answer: Yes: code compliance ≠ automatic satisfaction of the standard of care

10 practice questions

0/10 correct

1.Negligence needs

2.Standard of care is

3.A limitation-of-liability clause

4.Privity of contract

5.Errors-and-omissions insurance covers

6.Shop drawings stamped without review

7.Betterment (owner would have paid for the omitted beam anyway)

8.Expert testimony on standard of care

9.A PE who follows the owner’s illegal instruction

10.Statute of repose vs limitation