IS 3761:1983 is the Indian Standard (BIS) for metal side racks (adjustable type) - specification. This standard specifies the requirements for materials, dimensions, manufacture, and finish of adjustable metal side racks typically used for storage in offices, libraries, and institutions.
Metal Side Racks (Adjustable Type) - Specification
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Shelf Deflection Limit (under load) | Shall not exceed 1/180 of the span | L/200 for shelf beams (recommended); stricter limits for automated systems | FEM 10.2.06 |
| Material Specification (Uprights) | Mild steel sheet (e.g., 2.5 mm thick for heavy-duty) conforming to IS 2062 | Performance-based; designer selects steel grade (e.g., S275) and thickness based on structural calculations to meet strength and serviceability requirements | FEM 10.2.06 |
| Load Test | Apply 1.5 times the specified load for 24 hours and check for permanent set. | Conduct multiple tests: Proof Load Test (to a factor of functional load) and Ultimate Strength Test (to failure) to verify safety margins. | ANSI/BIFMA X5.9-2019 |
| Standard Heights | 1950 mm, 2250 mm | Not specified in design standards; determined by the manufacturer based on design calculations and market requirements. | FEM 10.2.06 / General Practice |
| Finish | Stove enamelling or synthetic enamel paint over a phosphate coating. | Chemically stable baked polyester powder coating; no volatile organic compounds (VOCs). | BS EN 16893:2018 |
| Design Methodology | Implicit working stress design through prescriptive dimensions and a simple load test. | Limit State Design (LSD) with partial safety factors for loads (γf) and material resistances (γm). | AS 4084:2023 |