PhD in Civil Engineering- Multi-Hazard Risk Assessment and Mitigation in New York United States | Columbia University

The basic requirement for admission as a graduate student is the bachelor's degree received from an institution of acceptable standing. Ordinarily, the applicant will have majored in the field in which graduate study is intended, but in certain programs preparation in a related field of engineering or science is acceptable. The applicant will be admitted only if the undergraduate record shows promise of productive and effective graduate work.

The Master of Science (MS) degree is required for admission into the PhD and EngScD degree programs. A student who holds an appropriate bachelor's degree in engineering may apply for admission to either the MS only or MS leading to PhD program.
The following materials must accompany the online application for on-campus graduate programs-
Transcripts from every post-secondary institution attended
Three recommendation letters
Official Graduate Record Examination (GRE) General Test Scores
Personal statement
Resume or Curriculum Vitae
Publications (optional)
An interview may be requested

There are no minimum test score requirements to apply for admission consideration. However, it may be necessary to improve your English proficiency if you score:

TOEFL internet-based test - 99 or lower.
IELTS - 6.5 or lower.