Water is the primary enemy of road longevity. This section details the design and construction of drainage systems to protect the road asset.

Specifications for clearing, earthworks, and drainage structures.

Large swathes of Tanzania, particularly in the northern and central regions, feature highly expansive clay soils. The 2000 specifications mandate specific stabilization techniques—such as lime or cement modification—or substantial subgrade replacement (pioneer layers) to prevent seasonal swelling and shrinkage from cracking the pavement. Plasticity Index (PI) Tolerances

Projects funded by the World Bank or AfDB frequently host the SSRW 2000 as part of tender documentation. Search for “TANROADS tender documents Tanzania” – the specification is usually appended as Section A of the Works Contract.

Official copies are typically managed by the Tanzania Bureau of Standards (TBS) , though technical summaries and project-specific excerpts are often available through TANROADS procurement portals for bidding contractors. Tanzania Standard Road Works 2000 | PDF - Scribd

The SSRW 2000 is not merely a theoretical guideline; it directly governs procurement and construction. For example, in tender documents for projects like the construction of the Jangwani Bridge, clarifications explicitly refer to the SSRW 2000 to adjust Bill of Quantities (BOQ) items and confirm measurement standards. It also provides detailed clauses on complex issues such as and temporary borrow pits , requiring contractors to follow specific legal and administrative procedures under Sections 3400 and Clause 1214.

The document was prepared by a dedicated working group under the supervision of a steering committee comprising key figures from the Ministry of Works, including the Director of Trunk Roads (Mr. J.L. Ngumbulu), the Director of Rural Roads, and the Acting Chief Engineers for both Trunk and Rural Roads. The collaborative effort aimed to harmonize local practices with international best practices, primarily drawing from British Standards (BS) and other recognized international specifications.

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– Contains over 1,150 definitions for construction terms, general requirements, and the contractor's site establishment obligations. Series 2000: Drainage

The document is organized into seven primary "Series," each covering a distinct phase or component of road construction: Tanzania Standard Road Works 2000 | PDF - Scribd

: Standardizes terminology, testing methods, and measurement metrics nationwide.

Technical requirements for concrete pipe culverts, box culverts, and structural plate arches.

Search for “Standard Drawings for Roadworks Tanzania 2002” – a separate PDF. The 2000 spec references these drawings for pipe bedding, kerb details, and steel reinforcement.

The Standard Specification for Roadworks 2000 Tanzania PDF covers several key components, including: