Tamil Nadu Pwd Building Practice Standard Data Book Exclusive -

| Span (m) | Beam depth (mm) | Width (mm) | Column size (mm) | |----------|----------------|------------|------------------| | 3.0 | 300 | 230 | 230 x 230 | | 4.5 | 450 | 230 | 230 x 300 | | 6.0 | 600 | 300 | 300 x 450 | | 7.5 | 750 | 300 | 300 x 600 |

One of the biggest headaches in construction is ambiguity. If a tender asks for "Earthwork Excavation," does that include the cost of transporting the soil? The Data Book clarifies this. It explicitly defines what is included in the "lead" and "lift," ensuring that contractors quote correctly and engineers check bills fairly. | Span (m) | Beam depth (mm) |

Unlike the CPWD which allows a 12mm plaster thickness for walls, the Tamil Nadu book standardizes 15mm plastering for external walls (1:5 ratio) and 12mm for internal walls (1:4 ratio). The Tamil Nadu PWD Standard Data Book (often

The Tamil Nadu PWD Standard Data Book (often abbreviated as the SD or SPD Book) is the official technical compendium published by the Building Centre & Organisation (BCO), PWD, Chennai. It is not merely a rate list; it is a catalog of construction methodologies, labor outputs, material consumption factors, and cost analysis. material consumption factors