IS 6313:2000 (Part 3) is the Indian Standard (BIS) for anti-termite measures in buildings, part 3: treatment for existing buildings. This standard provides a code of practice for applying anti-termite measures to existing buildings. It details the methods for inspecting termite infestation and carrying out treatment by creating a chemical barrier in the soil, treating voids in masonry, and addressing infested woodwork.
Code of Practice for Anti-termite Measures in Buildings, Part 3: Treatment for Existing Buildings
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Minimum Clearance (Suspended Floor) | 500 mm from underside of joists to ground. | 400 mm minimum clearance for general access. | AS 3660.1-2014 |
| Exposed Slab Edge for Inspection | Suggests a 750 mm wide concrete apron around the periphery for plinth protection. | A minimum of 75 mm of the vertical face of the slab edge must be left exposed for inspection. | AS 3660.1-2014 |
| Concrete Slab Barrier Specification | Recommends a 'dense, homogeneous' concrete slab (M20 or higher for RCC) but does not specify a minimum thickness for termite proofing. | Minimum 100 mm thickness, 20 MPa strength, and steel reinforcement to control shrinkage cracking. | AS 3660.1-2014 |
| Protection of Pipe Penetrations | Seal gaps around pipes with cement mortar (1:3) or coal tar pitch. | Requires use of proprietary termite-resistant collars or sealants specifically tested for termite resistance. | AS 3660.1-2014 |
| Use of Termite-Resistant Wood | Recommends using heartwood of naturally resistant species listed in IS 3384 or preservative-treated wood. | Permits use of naturally termite-resistant wood (e.g., Redwood) or pressure-preservative treated wood complying with AWPA standards as a protection method. | IRC 2021 (R318.1) |
| Stainless Steel Mesh Barrier Aperture | Not specified; manufactured physical barriers are not detailed. | Max. aperture of 0.66 mm × 0.45 mm for protection against Coptotermes species. | AS 3660.1-2014 |