IS 7288:1992 is the Indian Standard (BIS) for design and construction of masonry structures for irrigation and drainage. This code provides guidelines for the design and construction of masonry structures used in irrigation and drainage systems. It covers material specifications, design considerations like stability and permissible stresses, and construction practices for assets such as canals, regulators, and aqueducts.
Provides guidelines for the design and construction of masonry structures used in irrigation and drainage works.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Design Philosophy | Working Stress Method (Allowable Stress Design) | Limit State Design / Strength Design | EN 1996-1-1 / ACI 530 |
| Basic Compressive Stress (Example) | 1.10 N/mm² (For 10 N/mm² brick strength & 1:3 cement mortar) | ~2.0 N/mm² (Design strength 'fd' derived from characteristic strength 'fk' and partial safety factors) | EN 1996-1-1 |
| Mortar for Severe Exposure | Prescribed mix, typically 1:3 or 1:4 (Cement:Sand). | Performance-based, e.g., Mortar Class M6 or M12 for exposure class MX3.2/MX4. | EN 1996-2 |
| Minimum Curing Period for Mortar | Continuous wet curing for at least 10 days. | Protect from rapid drying for 24-72 hours; less emphasis on continuous wet curing. | ACI 530.1 / TMS 602 |
| Nominal Mortar Joint Thickness (Brickwork) | 10 mm | 10 mm (or 3/8 inch ≈ 9.5 mm) | EN 1996-2 / ACI 530.1 |
| Factor of Safety against Overturning | 1.5 (when reservoir is full), 1.2 (when empty with seismic/wind) | Not explicitly stated as a single factor; achieved by applying partial factors to stabilizing (e.g., 0.9) and destabilizing (e.g., 1.5) actions in Limit State Design. | EN 1990 (Basis of structural design) |