ISO 7172:1988 pdf download.Furniture — Tables — Determination of stability.
Introduction
This International Standard is one of a series being prepared on the strength, durability and stability of furniture. The series currently consists of the following:
ISO 7170, Furniture — Storage units — Determination of strength and durability.
ISO 7171. Furniture — Storage units — Determination of stability.
ISO 7172. Furniture — Tab/es — Determination of stability.
ISO 7173, Furniture — Chairs and stools — Determination of
strength and durability.
ISO 7174-1, Furniture — Chairs — Determination of stability — Part 1: Upright chairs and stools.
ISO 7174 2, Furniture — Chairs — Determination of stability — Part 2: Chairs with tilting or reclining mechanism.
ISO 8019, Furniture — Tab/es — Determination of strength and durability.
1 Scope and field of application
This International Standard describes methods for determining the stability of all kinds of tables, except tables permanently attached to the structure of the building.
The test results are only valid for the article tested. When the test results are intended to be applied to other similar articles the test specimen should be representative of the production model.
In the case of designs not catered for in the test procedures the test should be carried out as far as possible as described and a list made of the deviations from the test procedure.
4 General test requirements
For tables with extension leaves, etc., carry Out the test at the least stable edge position, which may be at the centre of the extension leaf edge. If moie than one aeranyeineiit of the extension leaf is possible, the least stable one shaH be chosen.
For tables with non-rectangular tops, tables with pedestal-type supports, etc., follow the scime procedure in principle. Hnwvr, th least stahlc edge position for the vertical force and horizontal force shall be found by trial and error.
Test tables having extra leaves both with and without these extra leaves, and in all different positions.
5 Stability with vertical force
Position the table on the floor with stops against the legs along one long side of the table.
Tighten any assembly fittings.
Apply a vertical force at the centre of the tabletop along the long side that is placed against the stops and with its centre of gravity 50 mm from the outer edge of the tabletop (see the figure)
Increase the force up to any specified value or until at least one of the legs on the opposite side of the table lifts from the floor Record the force, in newtons, to the nearest whole number.ISO 7172:1988 pdf download.