1. Professor, Dept. of Urban and Rural Construction, Agricultural Univ. of Hebei, Baoding 071001, China (corresponding author).
2. Professor, Dept. of Engineering Technology and Surveying Engineering, New Mexico State Univ., Las Cruces, NM 88003.
3. Professor, Dept. of Urban and Rural Construction, Agricultural Univ. of Hebei, Baoding 071001, China.
4. Assistant Engineer, Anyang Architectural Design and Research Institute, Anyang 455000, China.
5. Master Degree Candidate, Dept. of Urban and Rural Construction, Agricultural Univ. of Hebei, Baoding 071001, China.