AS/NZS 4387.4-1996.Domestic kitchen assemblies – Methods of test – Determination of the strength of worktops and bottom surfaces.
I SCOPE This Standard sets out the procedure for determining the strength of worktops and bottom surfaces of kitchen units.
2 PRINCIPLE The storage parts of the unit to he tested are fully loaded with weights and a load is applied to the workop or Fxttom surface to determine the strength of that corn ponent.
3 APPARATUS The following apparatus is required:
(a) Weights—to provide a load that will not reinforce the unit or redistribute the load.
e.g. metal bars or lead shot in bags.
NOTE: If metal bars are used the front row shall he aligned with the front edge of ihe surface. If lead shot in bags is used, the bags should be divided into small compartments to prevent the contenis moving during testing.
(b) Mcaiis of applying a force — 1 (XM) N.
(c) Loading pad—75 mm x 75 mm having a smooth hard surface and a 5 mm edge radius.
4 PROCEDURE The procedure is as follows:
(a) Load all thc storage paris of the units with the appropriate mass as spcciflcd in Table 1.
(b) Select the position on the worktop or bottom surface most likely to fail.
NOTE: If there are several such positions select up Wa maxjmum of three positions.
(c) Place the loading pad on the selected position(s) and vertically apply a 10(X) N force, 10 times.
(d) A unit or component shall record a pass if, at the completion of the test, none of the
following defects affects the strength or function of the unit or component:
(I) Fracturing of any member, joint or component.
(ii) Any loosening of joints intended to he rigid.
(iii) Deformation or wear of any component.
(iv) Loosening of any components fixed to the unit.
5 TEST REPORT The lollowing shall be reported.
(a) Reference to this Joint Australian/New Zealand Standard (i.e. AS/NZS 4387.4).
(h) A detailed description of the unit or component tested. including the manufacturer’s product reference.
(C) The method of test and the test level to which the unit or component has been tested.
(d) Details of any defects observed before the test.
(C) Details of any defects observed after the test affecting the strength or function of the unit or component. for example—
(I) fracturing of any member, joint or component:
(ii) permanent loosening of joints intended to be rigid, shown by hand pressure applied to suitable members:
(iii) deformation or wear of any component that will essentially affect its function:
(iv) loosening of any means of fixing components to the articles:
(v) moveahie parts that do not open or close freely, or catches that do not operate smoothly: or
(vi) any other damage that may cause damage or snag clothing.
(f) If required. the magnitude of any non-standard forces used.