library furniture and fittings, Part 1: Timber
1978 Edition

According to Clause 2.5, timber used must comply with IS 13622:1993, which classifies Indian timber suitable for furniture and cabinets. Teak wood is specifically designated for key parts such as outer sides, uprights, and shelves with an 18 mm thickness, while display shelves use teak frames with 5 mm teak plywood. Intermediate shelves are made from 12 mm commercial plywood. Moisture content must adhere to IS 287:1973 standards. Additionally, if Medium Density Fibreboard (MDF) is used, it should meet IS 12406:1988 requirements. ECO Mark certification is encouraged to promote eco-friendly products.

IS 1829 Part 1 specifies that double-faced unit book racks should measure 2200 mm in height, 2000 mm in width, and 450 mm in depth; single-faced racks have the same height and width but 300 mm depth. Shelf spacing is generally set at 350 mm center-to-center. Plank thicknesses are a minimum of 25 mm for fixed and adjustable planks and 35 mm for uprights. Tolerances require that rectangular surfaces maintain a maximum diagonal difference of ±8 mm to ensure uniformity and structural integrity.

The standard outlines ergonomic criteria including a seat height of 430 mm from the floor, a minimum internal width between armrests of 460 mm, armrest height at 200 mm above the seat, and armrest setback of 75 mm from the front edge of the seat. The backrest is to be contoured for comfort without restricting movement. These specifications ensure proper posture support and user comfort during extended library use.

Catalogue card cabinets are constructed mainly from 20 mm thick teak wood planks for sides, back, bottom, and top. The front is divided into six vertical columns by intermediate planks that are 20 mm thick and 100 mm wide, connected by cross bearers measuring 20 mm thick by 25 mm wide. Shelves are made from 25 mm thick teak wood, with some components up to 40 mm thick. Finishes include brass label holders sized 75 mm by 25 mm on the bottom of boxes and flat brass hooks and eyes for securing lids. Locking mechanisms must secure at least two adjacent columns, and optional pull-out slides may be incorporated.

The standard mandates that timber for ECO Mark certified products be sourced only from non-natural forests such as industrial or social forestry plantations and shade trees from tea or coffee estates, per Clause 2.5.1 referencing IS 13622:1993. Medium Density Fibreboard used must conform to IS 12406:1988 for ECO Mark eligibility. Manufacturers need to obtain environmental clearances from State Pollution Control Boards under the Water (Prevention and Control of Pollution) Act 1974 and Air (Prevention and Control of Pollution) Act 1981, along with authorization under the Environment (Protection) Act 1986 if applicable. Documentary proof, including certificates or declarations, must be submitted to BIS during ECO Mark certification. Product labeling must also comply with the criteria outlined in Clause 18.2.