The is the primary technical and contractual guide published by the Ministry of Works in Tanzania to ensure uniform quality in road and highway engineering. Developed in collaboration with the Norwegian Public Roads Administration (NPRA) , it provides standardized definitions for over 1,150 terms and sets rigorous benchmarks for materials and workmanship. Key Structural Series
: Guidelines for clearing, grubbing, and the classification of excavation for payment. standard specification for roadworks 2000 tanzania pdf
Before 2000, Tanzania relied on a patchwork of colonial-era British standards and ad-hoc local amendments. The rapid deterioration of roads in the 1980s and 1990s highlighted the need for a unified, locally-relevant code. The Government of Tanzania, with financial and technical assistance from the World Bank and the African Development Bank, consolidated existing norms into a single volume. The is the primary technical and contractual guide
| Original 2000 Clause | 2025 Practice | |----------------------|----------------| | Clay liners allowed for low-fill embankments | Discouraged due to shrink-swell issues in regions like Mbeya | | Manual camber checking | Digital terrain models and stringless paving accepted | | Diesel-powered compaction | Low-carbon electric rollers now optional on donor projects | | Single surface dressing for rural roads | Double dressing or Otta seal preferred for 10-year design life | Before 2000, Tanzania relied on a patchwork of