ISO/DIS 7173-2014 pdf free.Furniture – Seating – Test methods for the determination of strength and durability.
ISO/DIS 7173 specifies test methods for the determination of strength and durability of the structure of all types of seating without regard to use, materials, design/construction or manufacturing process.
This International Standard does not apply to children’s highchairs. table mounted chairs and bath seats.
Test methods for the assessment of ageing, degradation. ergonomics and electrical functions are not included.
The test methods are not intended to assess the durability of upholstery materials, such as upholstery filling materials and upholstery covers.
This International Standard does not include any requirements. Requirements for different end uses can be found in other Standards.
2 Normative references
The following referenced documents are indispensable for the application of this document, For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 7619-2:2010, Rubber, vulcanized or thermoplastic — Determination of indentation hardness Part 2:
IRHO pocket meter method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
structure
load bearing parts of furniture such as the frame, seat, back and arm supports and suspension
3.2 leg rest extension of the seat area intended to support the legs of the user
Note 1 to entry: A leg rest might or might not be permanently attached to the structure of the item of seating.
3.3 foot rest part intended to support the feet of the user and which assists the user getting on or oft an item of seating
Note 1 to entry: A toot rest might or might not be permanently attached to the structure of the item of seating.
4 General test condition
4.1 Preliminary preparation
The furniture shall be tested as delivered. Knock•down furniture shall be assembled according to the instructions supplied. If the instructions allow the furniture to be assembled or combined in different ways, the most adverse combination shall be used for each test. Knock-down fittings shall be tightened before testing. Further tightening shall not take place unless specifically required by the manufacturer.
For seating that is designed to be fixed to the structure of a building. the unit shall be mounted according to the manufacturer’s instructions to a structure representative of the service installation. This structure shall be sufficiently strong and stiff to eliminate the possibility of it affecting the results of the test.
Unless otherwise specified by the manufacturer, the sample for test shall be stored in indoor ambient conditions for at least 24 h immediately prior to testing.
The tests shall be carried out at indoor ambient conditions. However, if during a test the temperature is outside the range 15°C to 25°C, the maximum and/or minimum temperature shall be recorded in the test report.
4.2 Application of forces
The test forces in durability and static load tests shall be applied sufficiently slowly to ensure that negligible dynamic load is applied. The forces In durability tests shall be applied sufficiently slowly to ensure that kinetic heating does not occur.
Unless otherwise stated, static forces shall be maintained for (10 ± 2) s. Unless otherwise stated, durability forces shall be maintained for (2 ± 1) S.
The forces may be replaced by masses. The relationship 10 N = 1 kg shall be used.ISO/DIS 7173 pdf free download.