Nematian Jelodarb*, H. and Siasar Nejad, F. 2024. Principles Governing Construction Contracts in Construction Projects and Establishing A Relationship Between Cost and Schedule. Journal of Civil Aspects and Structural Engineering. 1, 2 (Aug. 2024), 130–136. DOI:https://doi.org/10.48314/jcase.v1i2.38.