The standard delineates specifications for wooden shelving racks, covering both adjustable and fixed designs. It addresses material selection, dimensional criteria, construction techniques, finishing methods, and performance benchmarks to ensure durability, safety, and environmental compliance for commercial and residential applications.
Overview
The standard delineates specifications for wooden shelving racks, covering both adjustable and fixed designs. It addresses material selection, dimensional criteria, construction techniques, finishing methods, and performance benchmarks to ensure durability, safety, and environmental compliance for commercial and residential applications.
Audience
Contents
Structure
This section outlines the specifications for wooden shelving racks, including materials, finishing, and dimensional tolerances. Timber species must comply with plantation timber standards under IS 13622:1993 for ECO Mark eligibility. MDF used must adhere to IS 12406:1988. Paints and coatings are required to meet applicable Indian Standards for air-drying and baking finishes. Dimensional allowances and tolerances are detailed, ensuring sustainable timber use and quality finishes.
Annex A lists key referenced Indian Standards relevant to materials, adhesives, finishes, and structural components. Important standards include IS 287 for timber moisture content, IS 303 for plywood specifications, IS 401 on timber preservation, IS 4835 for adhesives, and IS 5807 covering finish testing methods. Marking requirements for manufacturers are specified, ensuring traceability and quality compliance.
Details on acceptable timber species per IS 13622:1993, moisture limits per IS 287:1973, plywood per IS 303:1989, particle boards (IS 3087), blockboards (IS 1659), and adhesives (IS 5807, IS 849) are provided. Finishes must conform to IS 2338 and preservation treatments per IS 401. All materials are subject to Bureau of Indian Standards quality control.
Shelving rack heights range from 900 to 4800 mm in 300 mm increments with an additional 75 mm clearance. Width is fixed at 900 mm, and depths include 300, 400, 500, and 600 mm options. Dimensional tolerances allow ±5 mm variation, with rectangularity controlled by a maximum 8 mm difference in diagonal lengths. Minimum 10 mm clearance is maintained around recesses.
Adhesives conform to IS 849 (casein glue) and IS 4835 (synthetic resin). Joinery follows IS 3845 guidelines, with back panels fixed by half-lap or double half-lap joints secured with glue and screws. Timber selection adheres to IS 399, seasoning to IS 287, quality grading to IS 1331, and preservation treatment to IS 401 for concealed or less durable wood parts.
Assembly requires joining components with glue and screws under pressure; pilot holes must be pre-drilled before screw insertion, and screws should be coated with glue for enhanced bonding. Surface finishes must comply with relevant standards for air-drying or baking. Knocked-down units should be supplied with complete fixing instructions for rapid assembly.
Finishes may include waxing, French polishing, or painting in accordance with IS 2338. Paint types such as clear lacquers, melamine resin, and polyurethane are applied following manufacturers’ directions. Performance testing includes resistance to liquids and oils as per IS 5807 Parts 3 and 4, ensuring durability and appearance retention.
Finished surfaces are subject to impact, cross-cut, and scrape tests according to IS 5807 Part 6, with required ratings ensuring robustness. Resistance to liquid marking is tested per IS 5807 Part 4 with minimum acceptable ratings. Compliance guarantees longevity and quality of surface finishes.
For ECO Mark certification, timber species must come exclusively from non-natural forests, such as industrial plantations or estate shade trees, per IS 13622. MDF and particle boards must meet IS 12406 and IS 3087 standards respectively. Manufacturers are required to submit proof of compliance to BIS to qualify for the environmental mark.
All wooden shelving racks must bear manufacturer identification marks as per Clause 10.1 to ensure traceability. Finishes and adhesives must conform to IS 2338 and IS 5807 standards. Moisture content control follows IS 287. These requirements support quality assurance and regulatory compliance under BIS licensing.
Frequently Asked
As per the standard, permitted materials include wood particle boards compliant with IS 3087:1985, which may be single or three-layer flat pressed using BWR adhesives for baked finishes. Plywood must meet IS 303:1975 standards with BWR, WWR, or CWR grades for air-drying finishes and BWR only for baking finishes, with a minimum Type B grade. Blockboards conforming to IS 1659:1979 are allowed, with Grade 1 or 2 for air-drying and Grade 1 for oven drying. Shelf supports use aluminium alloy or mild steel brackets and timber cleats of specified minimum dimensions.
Adjustable shelving incorporates bracket recesses or metal strips with holes spaced every 50 mm on the sides, supporting shelves at all four corners with aluminium alloy or mild steel brackets sized at least 30x30x3 mm, and timber cleats of minimum 50x25 mm for support. Fixed shelving racks use wood screws of minimum 20 mm length to secure shelves rigidly with at least 300 mm vertical spacing, mounted on metal brackets or timber cleats. This distinction ensures both adaptability and strength according to design requirements.
Shelving racks must have heights ranging from 900 mm to 4800 mm in 300 mm increments, plus a 75 mm clearance allowance. Width is fixed at 900 mm, and depth options include 300, 400, 500, and 600 mm. Dimensional tolerance for overall measurements is ±5 mm, while rectangularity is controlled with a maximum diagonal difference of 8 mm. Clearances of at least 10 mm are required around recesses. Brackets and timber cleats must meet minimum size specifications to ensure secure shelf support.
While the standard does not explicitly list performance tests for finishes on shelving racks, it recommends using BWR grade plywood finished with air-drying paints, enamel, or varnishes. Industry practice suggests finishes should undergo adhesion, water resistance, and abrasion testing according to IS 101 or equivalent standards to verify durability, moisture protection, and wear resistance, ensuring the finish maintains integrity during typical use.
To qualify for ECO Mark under this standard, timber must be sourced exclusively from non-natural forests, such as industrial or social forestry plantations or estate shade trees, complying with IS 13622:1993. MDF must meet IS 12406:1988 requirements specific to ECO Mark, and particle boards must conform to IS 3087:1985. Manufacturers must provide documentary evidence to BIS demonstrating adherence to these environmental criteria, enabling the product to bear the BIS Standard Mark and ECO Mark label.
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