ISO 7170-2021 pdf – Furniture — Storage units — Determination of strength and durability

ISO 7170-2021 pdf – Furniture — Storage units — Determination of strength and durability.
1 Scope This International Standard specifies test methods for determining the strength and durability of storage units that are fully assembled and ready for use, including their movable and non-movable parts. The tests consist of the application, to various parts of the unit, of loads, forces and velocities simulating normal functional use, as well as misuse, that might reasonably be expected to occur. With the exception of the sustained load tests in Clause 6, the tests are designed to evaluate properties without regard to materials, design/construction or manufacturing processes. The test results are only valid for the unit/component tested. These results may be used to represent the performance of production models provided that the tested model is representative of the production model. Tests carried out according to this International 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. The strength and durability tests do not assess the structure of the building, e.g. the strength of wall hanging cabinets includes only the cabinet and the parts used for the attachment. The wall and the attachment into the wall are not included. Assessment of ageing and degradation is not included. This International Standard specifies test methods only. It does not specify requirements. These should be specified in a requirements document. If this is not available, suggested loads and cycles can be found in Annex A. Annex B describes two apparatuses used for slam-shut and slam-open tests of extension elements. 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.
4 General test conditions 4.1 Preliminary preparation The unit(s)/component(s) shall be tested as delivered. The unit(s)/component(s) shall be assembled and/or configured according to the instructions supplied with it. The most adverse configuration shall be used for each test. For testing a range of related models, only worst case(s) need to be tested. If mounting or assembly instructions are not supplied, the mounting or assembly method shall be recorded in the test report. Fittings shall be tightened before testing and shall not be re-tightened unless specifically required in the manufacturer’s instructions. If the configuration must be changed to produce the worst-case conditions, this shall be recorded in the test report. Combination of tests may be necessary to cover the properties of multifunction components; e.g. a receding door shall be tested as a sliding door and as a pivoted door. For furniture that includes hygroscopic materials, at least one week in normal indoor conditions shall have elapsed between manufacturing (or assembly) and testing. Except for the test for deflection of shelves (see below), the tests shall be carried out in indoor ambient conditions at a temperature between and . If during a test, the temperature is outside the to range, the maximum and/or minimum temperature shall be recorded in the test report.
The test for deflection of shelves, except metal, stone and glass shelves, shall be carried out at a relative humidity (RH) of to . If during a test, the relative humidity is outside this range, the maximum and/or minimum shall be recorded in the test report. NOTE The to range and the corresponding wood moisture content is representative of average indoor conditions in Europe, USA and Canada. Other relative humidities may be appropriate in other parts of the world. In the case of designs not addressed in the test procedures, the test shall be carried out as far as possible as described, and deviations from the test procedure recorded in the test report. Before beginning the testing, visually inspect the unit thoroughly. Record any defects so that they are not assumed to have been caused by the tests. Carry out measurements if specified. During testing, the unit shall be placed on the floor and levelled, unless otherwise specified.