steel clothes lockers - Specification
1984 Edition

IS 3314 (1984) governs steel clothing lockers with hinged doors, specifying various locker models such as single-tier, two-tier, and three-tier designs. Common dimensions include heights of approximately 1800 mm for single-tier, 900 mm for two-tier, and 600 mm for three-tier lockers, with typical widths and depths around 450 mm. These sizes may slightly differ depending on manufacturers but adhere to IS guidelines to ensure usability and ergonomics.

Locker components such as partitions and shelves must be made from mild steel sheets with a minimum thickness of 0.8 mm, featuring flanged joints with at least 15 mm flange width for strength. Doors are also constructed from mild steel sheets, minimum thickness 0.8 mm, with double return bent edges measuring at least 12 mm deep and 10 mm wide. Ventilation is provided via two louvered vents per door unless otherwise specified.

IS 3314 mandates the use of gas welding (IS 1323-1966), arc welding (IS 816-1969), and spot welding (IS 819-1957) for assembling steel lockers. Corresponding electrodes include gas welding filler rods as per IS 1278-1973, covered electrodes for arc welding compliant with IS 814 (Part 2)-1974, and spot welding electrodes aligned with IS 4972-1968. These standards ensure weld quality and compatibility with steel locker materials.

IS 3314 requires mild steel parts to undergo pickling followed immediately by phosphating treatment conforming to Class C of IS 3618-1966, with application procedures as per IS 6005-1970. Surface filling uses putty compliant with IS 110-1968, and primer coatings utilize aluminium red oxide primer per IS 5660-1970. Finishing paints and enamels follow relevant IS paint standards. The coated panels must pass corrosion resistance tests (IS 101-1964 Clause 18) and adhesion/flexibility tests (IS 101-1964 Clause 16) to confirm durability and resistance to cracking or detachment.

Optional accessories include coat hooks made of mild steel or aluminum with ball-point ends, finished by nickel or chromium plating (IS 1068-1968) or anodizing for aluminum, mounted centrally beneath the shelf. Number plates are polished aluminum with black numerals fixed atop the locker doors. Hanging rods can be mild steel tubular pipes (IS 7138-1973) or aluminum pipes, typically 20 mm in diameter with a minimum 1.6 mm wall thickness, finished suitably and mounted using brackets to facilitate garment hanging.

To ensure longevity and surface integrity, IS 3314 specifies the flexibility and adhesion test on mild steel specimens sized 150 x 50 mm with 0.315 mm thickness, per IS 101-1964 Clause 16, requiring no damage or cracking under 10x magnification. Pressure tests on 0.315 mm thick steel plates are conducted as per Clause 15.2 of IS 101:1964, ensuring no metal surface exposure occurs. Corrosion resistance is validated with condensation tests on 150 x 100 mm, 1.25 mm thick panels per IS 101-1964 Clause 18, requiring absence of corrosion signs after testing.

Purchasers should specify the type of locker (e.g., single-tier or multi-tier), the sequence for numbering lockers, the desired finish color, the construction and finishing methods if alternatives exist, and corner style preferences such as rounded or sharp corners. Optional accessory requirements like coat hooks, number plates, and hanging rods should also be indicated to ensure the manufactured lockers match the buyer’s specifications and comply with marking requirements.