IS 6313:2000 (Part 2) is the Indian Standard (BIS) for anti-termite measures in buildings, part 2: pre-constructional chemical treatment measures. This standard provides guidelines for the chemical treatment of soil during the pre-construction phase to protect buildings from subterranean termites. It outlines the specific chemicals, their concentrations, and the detailed procedures for application at various stages like foundation excavation, backfilling, and flooring. The objective is to create a continuous chemical barrier around and under the building structure.
Code of Practice for Anti-Termite Measures in Buildings, Part 2: Pre-constructional Chemical Treatment Measures
| 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 |