A comprehensive guide to accompany the Intermediate Sub-Contract (ICSub), Intermediate Sub-Contract with sub-contractor’s design (ICSub/D), and Intermediate Named Sub-Contract (ICSub/NAM), featuring an explanation of sub-contracting under IC and ICD, the Sub-Contract Agreement (Recitals, Articles, Sub-Contract Particulars, Attestation,) and Sub-Contract Conditions (Sections, Clauses and Schedules).