1. Postdoctoral, Dept. of Civil and Environmental Engineering, Colorado State Univ., Fort Collins, CO 80523; Faculty Member, Dept. of Civil and Environmental Engineering, Universitas Gadjah Mada, Yogyakarta 55284, Indonesia (corresponding author). ORCID: .
2. Professor, Dept. of Civil and Environmental Engineering, Colorado State Univ., Fort Collins, CO 80523.