The IS 4116:1988 standard outlines the specifications for adjustable wooden shelving cabinets with hinged doors, including details on materials, dimensions, construction, finishes, and performance criteria. It serves as a guideline for manufacturers, designers, and quality assurance professionals in India to ensure the cabinets meet Indian standards and environmental guidelines such as the ECO Mark.
Overview
The IS 4116:1988 standard outlines the specifications for adjustable wooden shelving cabinets with hinged doors, including details on materials, dimensions, construction, finishes, and performance criteria. It serves as a guideline for manufacturers, designers, and quality assurance professionals in India to ensure the cabinets meet Indian standards and environmental guidelines such as the ECO Mark.
Audience
Contents
Structure
This section defines the overall dimensions and installation clearances for adjustable wooden shelving cabinets, including specific sizes for small and large models, minimum space allowances for recess installation, and finishing requirements compliant with relevant Indian standards.
Details the material standards applicable to various components such as plywood, paints, and finishes, highlighting conformity to IS codes like IS 303 and IS 5807, and specifying requirements for dimensions and surface resistance.
Specifies the precise dimensions for small and large cabinets, including height, width, and depth, along with tolerance limits for manufacturing and required clearances for proper installation.
Covers construction guidelines including fabrication methods, assembly options such as knocked down supplies, material specifications, and finishing performance requirements.
Describes acceptable types of joinery like spline-miter and interlocked miter joints, adhesive standards per IS codes, door thickness and fixing methods, and back panel attachment techniques.
Specifies accessory options including hanging rods and mirrors, their materials and dimensions, as well as assembly requirements such as pilot hole drilling, glue application, and screw fixation.
Defines the maximum uniform loads for shelves based on size, overall cabinet dimensions, installation clearances, and instructions for safe usage within specified limits.
Outlines finishing specifications including smoothness, uniformity, minimum dry film thickness, resistance to chipping and flaking, and conformance to IS 5807 for liquid resistance.
Details the testing standards for finish quality, including colour agreement, surface defect absence, minimum dry film thickness, and resistance to marking by liquids as per relevant IS standards.
Lists the environmental standards for ECO Mark certification, including approved timber species from non-natural forests, MDF and particle board compliance, and documentation and clearances required from manufacturers.
Describes packaging standards ensuring safe transport and assembly, including knocked down supply options, component preparation, and provision of fixing instructions.
Explains the use of the BIS Standard Mark, related quality assurance procedures, surface resistance tests to ensure marking durability, and licensing conditions under the BIS Act.
Specifies the details the purchaser must provide when ordering, such as lock and locker needs, number of adjustable shelves, finish colour, alternative construction or finish preferences, and instructions for knocked down supply.
Frequently Asked
IS 4116:1988 permits the use of various wood and wood-derived materials including seasoned solid wood species recommended in IS 399-1963, with moisture content aligned to climatic zones per IS 287-1973 and specifications in IS 1331-1977. Non-durable wood parts or sapwood must be preservative-treated following IS 401-1982. Plywood should comply with IS 303-1975, with specific grades like BWR, WWR, and CWR allowed for air-drying finishes and only BWR for oven-drying. Medium Density Fibreboard (MDF) must meet IS 12406:1988 standards, with Interior Grade IGSB for air-dried finishes and Exterior Grade EGSB for oven-dried. Blockboards and particle boards must adhere to their respective IS standards as referenced in IS 4116. This ensures durability, proper finish compatibility, and environmental compliance including optional ECO Mark certification.
According to IS 4116, shelving cabinets come in two sizes: small with dimensions 1280 mm (height) x 760 mm (width) x 430 mm (depth), and large with 1980 mm x 910 mm x 480 mm respectively. Dimensional tolerances for all overall measurements are ±5 mm. Installation requires minimum clearances of 20 mm at the top, 10 mm on each side, and depth clearance equal to the door thickness if doors cover the entire width. Shelf, top, and bottom thicknesses are generally 20 mm ±1 mm, with thicker shelves or central supports recommended for heavier loads. These specifications ensure proper fit, structural integrity, and functionality.
Per IS 4116, shelf brackets should be fabricated from metal sheets at least 1.6 mm thick or from solid wood reinforced with dowel pins, ensuring secure support of shelves. Cupboard sides must feature recesses or metal strips with holes spaced at 50 mm intervals vertically to allow for easy internal adjustment of shelf height. Shelves need to be supported securely at all four corners. This design facilitates stability, flexibility, and convenient repositioning of shelves within the cabinet framework.
IS 4116 requires surface finishes to undergo resistance testing against dry heat following IS 5807 (Part 1)-1975, with a minimum qualifying average rating of 7 on the IS 5807 scale. Additionally, visual inspections ensure workmanship quality, verifying that surfaces are free from stains, warping, or other defects. Plywood used must conform to IS 303-1975 and be suitable for the intended finish type. These tests ensure the finish's durability and aesthetic integrity under heat exposure.
For ECO Mark certification under IS 4116, timber must be sourced exclusively from species listed in IS 13622:1993 originating from non-natural forest sources such as industrial or social forestry plantations and shade trees from tea and coffee estates. Medium Density Fibreboard (MDF) must comply with IS 12406:1988, and plywood must meet IS 303:1989 standards applicable to ECO Mark products. Manufacturers are required to obtain environmental clearance certificates from the State Pollution Control Board under the Water and Air Pollution Acts and provide authorization under the Environment Protection Act, if applicable. Proper documentation including certificates or declarations must be submitted to BIS as part of the ECO Mark application process, ensuring sustainable sourcing and environmental compliance.
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