ISO/DIS 7170

Furniture -- Storage units -- Test methods for the determination of strength and durability

Ameublement -- Meubles de rangement -- Méthodes d'essai pour la détermination de la résistance et de la durabilité

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 7170
ISO/TC 136 Secretariat: UNI
Voting begins on: Voting terminates on:
2016-06-16 2016-09-07
Furniture — Storage units — Test methods for the
determination of strength and durability

Ameublement — Éléments de rangement — Détermination de la résistance et de la durabilité

ICS: 97.140
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ISO/DIS 7170:2016(E)
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ISO/DIS 7170:2016(E)
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ii © ISO 2016 – All rights reserved
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ISO/DIS 7170:2016(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General test conditions .................................................................................................................................................................................. 3

4.1 Preliminary preparation ................................................................................................................................................................. 3

4.2 Application of forces .......................................................................................................................................................................... 4

4.3 Tolerances ................................................................................................................................................................................................... 4

4.4 Prevention of movement during test ................................................................................................................................... 4

4.5 Loading .......................................................................................................................................................................................................... 4

5 Test equipment and apparatus .............................................................................................................................................................. 4

5.1 Floor surface ............................................................................................................................................................................................. 5

5.2 Wall surface................................................................................................................................................................................................ 5

5.3 Stops ................................................................................................................................................................................................................. 5

5.4 Loading pad ............................................................................................................................................................................................... 5

5.5 Apparatus for slam shut/open of extension elements ......................................................................................... 5

5.6 Masses ............................................................................................................................................................................................................ 5

5.7 Glass marbles ........................................................................................................................................................................................... 5

5.8 Loads for filing pockets .................................................................................................................................................................... 5

5.9 Steel impact plates ............................................................................................................................................................................... 5

5.10 Obstacles for castor durability tests ..................................................................................................................................... 6

6 Test procedures for non-movable parts ....................................................................................................................................... 6

6.1 Shelves ............................................................................................................................................................................................................ 6

6.1.1 General...................................................................................................................................................................................... 6

6.1.2 Shelf retention test – horizontal outward force .................................................................................... 6

6.1.3 Shelf retention test – vertical downward force ..................................................................................... 6

6.1.4 Deflection of shelves ..................................................................................................................................................... 6

6.1.5 Strength of shelf supports ........................................................................................................................................ 7

6.2 Tops and bottoms ................................................................................................................................................................................. 7

6.2.1 Sustained load test for tops and bottoms ................................................................................................... 7

6.2.2 Static load test for tops and bottoms .............................................................................................................. 8

6.3 Clothes rails and supports............................................................................................................................................................. 8

6.3.1 Strength of supports ..................................................................................................................................................... 8

6.3.2 Strength of clothes rails ............................................................................................................................................. 9

6.4 Strength of the structure ................................................................................................................................................................ 9

6.4.1 Test for structure and underframe ................................................................................................................... 9

6.4.2 Drop test ...............................................................................................................................................................................11

6.4.3 Tests for units with castors or wheels ........................................................................................................12

7 Test procedures for movable parts ................................................................................................................................................12

7.1 Pivoted doors .........................................................................................................................................................................................12

7.1.1 General...................................................................................................................................................................................12

7.1.2 Strength of pivoted – Vertical load of pivoted doors ......................................................................12

7.1.3 Horizontal load of pivoted doors ....................................................................................................................13

7.1.4 Slam shut of pivoted doors ...................................................................................................................................13

7.1.5 Durability of pivoted doors ..................................................................................................................................14

7.2 Sliding doors and horizontal roll fronts .........................................................................................................................15

7.2.1 General...................................................................................................................................................................................15

7.2.2 Slam shut/open of sliding doors and horizontal roll fronts ....................................................15

7.2.3 Durability of sliding doors and horizontal roll fronts ...................................................................15

7.3 Flaps ..............................................................................................................................................................................................................16

7.3.1 Strength of bottom-hinged flaps .....................................................................................................................16

7.3.2 Durability of flaps .........................................................................................................................................................16

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ISO/DIS 7170:2016(E)

7.3.3 Drop test for horizontally top-hinged doors/flaps ..........................................................................17

7.4 Vertical roll fronts ..............................................................................................................................................................................17

7.4.1 Slam shut/open of vertical roll fronts ........................................................................................................17

7.4.2 Durability of vertical roll fronts .......................................................................................................................18

7.5 Extension elements ..........................................................................................................................................................................18

7.5.1 General...................................................................................................................................................................................18

7.5.2 Strength of extension elements ........................................................................................................................18

7.5.3 Durability of extension elements ....................................................................................................................19

7.5.4 Slam shut and open of extension elements ............................................................................................20

7.5.5 Displacement of extension elements ...........................................................................................................21

7.5.6 Interlock test ....................................................................................................................................................................21

7.6 Locking and latching mechanism test ..............................................................................................................................22

7.6.1 General...................................................................................................................................................................................22

7.6.2 Strength test for locking and latching mechanisms for extension elements ............22

7.6.3 Locking and latching mechanisms for doors, flaps and roll fronts ....................................22

7.6.4 Locking and latching mechanism durability test ..............................................................................22

8 Trays ...............................................................................................................................................................................................................................22

8.1 General ........................................................................................................................................................................................................22

8.2 Sustained load test for trays .....................................................................................................................................................22

8.3 Drop test for trays .............................................................................................................................................................................22

9 Coat hooks – Strength of coat hooks ..............................................................................................................................................23

10 Units mounted to the building or other structure ..........................................................................................................24

10.1 Units not supported by the floor ..........................................................................................................................................24

10.1.1 General...................................................................................................................................................................................24

10.1.2 Movable parts, shelf supports, tops and bottoms .............................................................................24

10.1.3 Overload ...............................................................................................................................................................................24

10.1.4 Dislodgement test ........................................................................................................................................................25

10.2 Units supported by the floor ....................................................................................................................................................25

11 Test report ................................................................................................................................................................................................................25

Annex A (informative) Guidance for the choice of loads, cycles, etc. for storage furniture

strength and durability tests ................................................................................................................................................................27

Annex B (normative) Apparatus for slam-shut/open test of extension elements .............................................32

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ISO/DIS 7170:2016(E)
Foreword

This document is a proposal for the revision of ISO 7170. It is based upon the European Standard

EN 16122.

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International

Standards adopted by the technical committees are circulated to the member bodies for voting.

Publication as an International Standard requires approval by at least 75 % of the member bodies

casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 7170 was prepared by Technical Committee ISO/TC 136, Furniture.

This second edition cancels and replaces the first edition (ISO 7170:2005), which has been technically

revised.
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DRAFT INTERNATIONAL STANDARD ISO/DIS 7170:2016(E)
Furniture — Storage units — Test methods for the
determination of strength and durability
1 Scope

This International Standard specifies test methods for the 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

bespecified 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.

ISO 7619-2:2010, Rubber, vulcanized or thermoplastic — Determination of indentation hardness — Part 2:

IRHD pocket meter method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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ISO/DIS 7170:2016(E)
3.1
catch device

device which keeps or pulls a component in place but does not require a second action in order to

release it
EXAMPLE A magnetic catch or a self-closing-mechanism.
3.2
clear height

unobstructed height above the top of the bottom surface, or the structure of the unit

Note 1 to entry: For example, the top of the extension element below and the lower edge of the extension element

above. See Figure 1.
Key
1 structure of the unit
2 clear height H
Figure 1 — Clear height
3.3
damper mechanism
mechanism which gently brings the component to a stop
3.4
extension element
components that can be pulled out and pushed in
EXAMPLE Drawers, suspended pocket files, keyboard trays.
3.5
flap
horizontally hinged door, which opens upwards or downwards
3.6
free standing unit
unit not intended to be attached to a load bearing structure
3.7
interlock
device which restrains the opening of more than one extension element at a time
3.8
latching mechanism

mechanism which retains an extension element or a door in the closed position and which requires a

second action to release it and may require a key or a combination in order to activate it

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ISO/DIS 7170:2016(E)
3.9
locking mechanism

mechanism that limits access to the interior of a unit or a storage element and that requires a key or a

combination in order to activate it or to make it possible to activate it
3.10
stay
hardware component usually used to hold a flap or door in the open position
3.11
top hanging unit
unit intended to be entirely supported by the ceiling
3.12
wall-, panel- and screen-hanging unit
unit intended to be supported by a wall, panel or screen
3.13
tray

storage element that is designed, under normal use, to be removed from the storage unit and used

independently
3.14
levelling device

adjustable device intended to keep the item of furniture perpendicular to the floor

EXAMPLE Adjustable feet or similar.
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. Unless otherwise stated, the most adverse

configuration shall be used for each test. 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 needs to be changed in order to produce the worst-case conditions, this shall be

recorded in the test report.

Levelling devices shall be set as near as possible to 5 mm from the fully open position while ensuring

the unit is perpendicular to the floor.

A combination of tests may be necessary to cover the properties of multifunction components; e.g. a

receding door shall be tested both as a sliding door and as a pivoted door.

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.

Except for the deflection of shelves (see below), the tests shall be carried out in indoor ambient

conditions at a temperature between 15 °C and 25 °C. If during a test the temperature is outside of the

range of 15 °C to 25 °C, the maximum and/or minimum temperature shall be recorded in the test report.

The test for deflection of shelves (6.1.4), except metal, stone and glass shelves, shall be carried out at

a relative humidity of 45 % to 55 %. If during a test the relative humidity is outside this range, the

maximum and/or minimum shall be recorded in the test report.

If a test cannot be carried out as specified, e.g. because a loading pad cannot be used for the application

of a force due to the design of a product, the test shall be carried out as closely as possible to that

specified.
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ISO/DIS 7170:2016(E)

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.

It is not necessary that all tests be carried out on the same unit, but all tests specified for a particular

component shall be carried out on the same component.
4.2 Application of forces

The test forces in the static load tests shall be applied sufficiently slowly to ensure that negligible

dynamic force is applied. Unless otherwise specified, each specified force shall be maintained for not

less than 10 s and not more than 15 s.

The test forces in durability tests shall be applied at a rate to ensure that excessive heating does not

occur. Unless otherwise specified, each test force shall be maintained for (2 ± 1) s.

The forces may be replaced by masses. The relationship 10 N = 1 kg shall be used.

4.3 Tolerances

Unless otherwise stated, the following tolerances are applicable to the test equipment:

— Forces: ± 5 % of the nominal force;
— Velocities: ± 5 % of the nominal velocity;
— Masses: ± 1 % of the nominal mass;
— Dimensions: ± 1 mm of the nominal dimension;
— Angles: ± 2° of the nominal angle.

The accuracy for the positioning of loading pads and impact plates shall be ± 5 mm.

NOTE For the purposes of uncertainty measurement, test results are not considered to be adversely affected

when the above tolerances are met.
4.4 Prevention of movement during test

If a freestanding unit tends to overbalance during the tests specified in Clauses 6 and 7, load the unit

until this tendency stops, unless otherwise specified.

If a freestanding unit tends to slide during the tests specified in Clauses 6 and 7, with the exception of

subclauses 6.4.2 and 6.4.3, the unit shall be restrained by stops (5.3).
4.5 Loading

Unless otherwise specified, all storage components, which are not subject to testing, shall be uniformly

loaded with the specified load(s).
5 Test equipment and apparatus

Unless otherwise specified, the tests may be applied by any suitable device, because results are

dependent only upon correctly applied forces and not on the apparatus.

The equipment shall not inhibit deformation of the unit/component, i.e. it shall be able to move so that

it can follow the deformation of the unit/component during testing, so that the loads are always applied

at the specified points and in the specified directions.
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ISO/DIS 7170:2016(E)
5.1 Floor surface
A rigid, horizontal and flat surface.

For the strength of structure and underframe (6.4.1), the surface shall be smooth high-pressure plastics

laminate.

For the drop test (6.4.2), the floor shall be faced with a 3 mm thick layer of rubber with a hardness of

(85 ± 10) IRHD according to ISO 7619-2:2010.
5.2 Wall surface
Rigid, vertical and flat
5.3 Stops

Devices to prevent the article from sliding but not tilting, not higher than 12 mm, except in cases where

the design of the unit necessitates the use of higher stops, in which case the lowest stop that will prevent

the item from moving shall be used.
5.4 Loading pad

A rigid disc 100 mm in diameter, with a flat face and a 12 mm front edge blend radius.

Where space prevents the use of a 100 mm diameter loading pad, a 50 mm diameter loading pad with

similar properties may be used.
5.5 Apparatus for slam shut/open of extension elements

Two examples for suitable apparatus as well as calibration instructions are given in Annex B.

5.6 Masses

Masses shall be designed so that they do not reinforce the structure or re-distribute the stresses.

NOTE For the deflection of shelves (6.1.4), steel masses with a length of 85 mm, a width of 50 mm, a thickness

of 30 mm and a mass of 1 000 g are suitable.
5.7 Glass marbles
Solid glass with 10 mm to 15 mm diameter

They shall be in a flexible bag large enough to allow them to move in the bag during the test.

5.8 Loads for filing pockets

Suspended filing pockets shall be loaded with typing paper or an equivalent alternative as shown in

Figure 18.
5.9 Steel impact plates

200 mm in length, with one surface faced with a 3 mm thick layer of rubber with a hardness of (85

...