IS 4990 : 2024

What this standard covers

This standard covers the requirements of plywood for concrete shuttering and form work.

Scope, quoted from IS 4990 : 2011 — the 2011 edition in the public archive, not the current IS 4990 : 2024. Read the full standard

The BIS registry lists the current edition as IS 4990 : 2024. The publicly archived copy quoted here is the 2011 edition, so wording and requirements may have changed since. Check the official BIS listing for what is in force.

Requirements and tests, as the standard names them

• 7.2 Size
• 7.3 Thickness
• 7.4 Tolerances
• 10.1.1 Moisture Content
• 10.1.2 Glue Adhesion in Dry State
• 10.1.3 Resistance to Water Test
• 10.1.5 Mycological Test
• 10.1.6 Tensile Strength
• 10.1.7 Static Bending Strength
• 10.1.8 Wet Bending Strength
• 10.1.9 Retention of Preservative
• 11.1 General Requirements
• 11.2 Specific Requirements

Sub-clause names as printed under the headings “DIMENSIONS AND TOLERANCES”, “TESTS”, “ADDITIONAL REQUIREMENTS FOR ECO-MARK” in IS 4990 : 2011 (the 2011 archived edition; BIS lists 2024 as current). Values and limits are deliberately not reproduced here — read them in the standard itself.

How the standard is organised

• 4 TYPES
• 5 MATERIALS
• 6 MANUFACTURE
• 7 DIMENSIONS AND TOLERANCES
• 8 WORKMANSHIP AND FINISH
• 9 SAMPLING
• 10 TESTS
• 11 ADDITIONAL REQUIREMENTS FOR ECO-MARK
• 13 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER

Test methods it refers to

• IS 1734

Edition history (per the BIS registry)

• IS 4990 : 2024 — current edition (last reviewed by BIS 2024-04-02)
• IS 4990 : 2011 — withdrawn by BIS

Where this standard is used on NirmanDost

Materials market

Also cited in the Materials Market rate library and SKU sheets.