EN 1335

EN 1335-1:2000 Office furniture – Office work chair – Part 1: Dimensions – Determination of dimensions
It specifies dimensions of three types of chairs as well as test methods for their determination.

EN 1335-2:2009 Office furniture – Office work chair – Part 2: Safety requirements
This part of EN 1335 specifies the mechanical safety requirements for office work chairs. The requirements are based upon use for 8 h a day by persons weighing up to 110 kg. For more severe conditions of use, increased requirements will be necessary.

EN 1335-3:2009 Office furniture – Office work chair – Part 3: Test methods
This European Standard specifies mechanical test methods for determining the stability, strength and durability of office work chairs. This European Standard does not specify type approval tests for chair components. The tests are designed to be applied to an article of furniture that is fully assembled and ready for use. The tests consist of the application, to various parts of the item, of forces simulating normal functional use, as well as misuse that might reasonably be expected to occur. The tests are designed to evaluate properties without regard to materials, design/construction or manufacturing processes. The test results are only valid for the article tested. When the test results are intended to be applied to other similar articles, it is important that the test specimen be representative of the production model. Tests carried out according to this standard are intended to demonstrate the ability of the item to give satisfactory service in its intended environment. The tests have been developed for units/components that have not been in use. However, when properly justified, they may be used for fault investigation. Assessment of ageing and degradation is not included. The tests are not intended to assess the durability of upholstery, i.e. filling materials and covers.

Office work chairs can be assessed according to these standards.

Types of furniture testing