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DRAFT UGANDA STANDARD

DUS DEAS 1017-2

First Edition 2019-mm-dd

Reference number DUS DEAS 1017-2: 2019

© UNBS 2019

Sanitary appliances (vitreous china) — Part 2: Wash down water closets

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DUS DEAS 1017-2: 2019

ii © UNBS 2019 - All rights reserved

Compliance with this standard does not, of itself confer immunity from legal obligations

A Uganda Standard does not purport to include all necessary provisions of a contract. Users are responsible for its correct application

© UNBS 2019

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written permission from UNBS.

Requests for permission to reproduce this document should be addressed to

The Executive Director Uganda National Bureau of Standards P.O. Box 6329 Kampala Uganda Tel: +256 417 333 250/1/2 Fax: +256 414 286 123 E-mail: info@unbs.go.ug Web: www.unbs.go.ug

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National foreword

Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and Cooperatives established under Cap 327, of the Laws of Uganda, as amended. UNBS is mandated to co-ordinate the elaboration of standards and is

(a) a member of International Organisation for Standardisation (ISO) and

(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and

(c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO).

The work of preparing Uganda Standards is carried out through Technical Committees. A Technical Committee is established to deliberate on standards in a given field or area and consists of representatives of consumers, traders, academicians, manufacturers, government and other stakeholders.

Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the general public for comments. The committee reviews the comments before recommending the draft standards for approval and declaration as Uganda Standards by the National Standards Council.

This Draft Uganda Standard, DUS DEAS 1017-2: 2019, Sanitary appliances (vitreous china) — Part 2: Wash down water closets, is identical with and has been reproduced from an East African Standard, DEAS 1017-2: 2019, Sanitary appliances (vitreous china) — Part 2: Wash down water closets, and is being proposed for adoption as a Uganda Standard.

The committee responsible for this document is Technical Committee UNBS/TC 4, Mechanical engineering and metallurgy.

Wherever the words, “East African Standard " appear, they should be replaced by "Uganda Standard."

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DEAS 1017-2:2019

ICS 91.140.70

© EAC 2019 First Edition 2019

DRAFT EAST AFRICAN STANDARD

Sanitary appliances (Vitreous china) — Specification — Part 2: Wash down water closets

EAST AFRICAN COMMUNITY

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Copyright notice

This EAC document is copyright-protected by EAC. While the reproduction of this document by participants in the EAC standards development process is permitted without prior permission from EAC, neither this document nor any extract from it may be reproduced, stored or transmitted in any form for any other purpose without prior written permission from EAC.

Requests for permission to reproduce this document for the purpose of selling it should be addressed as shown below or to EAC’s member body in the country of the requester:

© East African Community 2019 — All rights reserved East African Community P.O. Box 1096, Arusha Tanzania Tel: + 255 27 2162100 Fax: + 255 27 2162190 E-mail: eac@eachq.org

Web: www.eac-quality.net

Reproduction for sales purposes may be subject to royalty payments or a licensing agreement. Violators may be prosecuted.

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Contents Page

Foreword ............................................................................................................................................................ iv

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

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

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

4 General requirements ........................................................................................................................... 1

5 Traps ....................................................................................................................................................... 1

6 Dimensions ............................................................................................................................................ 3

7 Construction and finish ........................................................................................................................ 3 8 Tests ....................................................................................................................................................... 3 8.1 General ................................................................................................................................................... 3 8.2 Flush tests .............................................................................................................................................. 4 8.2.1 Toilet paper test ..................................................................................................................................... 4 8.2.2 Smudge test ........................................................................................................................................... 4 8.2.3 Ball test ................................................................................................................................................... 4 8.3 Holding capacity test ............................................................................................................................ 4 8.4 Load bearing test ................................................................................................................................... 4 8.5 Saw dust test ......................................................................................................................................... 4 8.5.1 Specification of the saw dust ............................................................................................................... 4 8.5.2 Procedure ............................................................................................................................................... 4 8.6 Splash test ............................................................................................................................................. 5

9 Sampling process and inspection ....................................................................................................... 5 9.1 Visual inspection ................................................................................................................................... 5 9.2 Dimensional, construction and performance tests ........................................................................... 5

10 Marking ................................................................................................................................................... 6

Bibliography ........................................................................................................................................................ 7

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Foreword

Development of the East African Standards has been necessitated by the need for harmonizing requirements governing quality of products and services in the East African Community. It is envisaged that through harmonized standardization, trade barriers that are encountered when goods and services are exchanged within the Community will be removed.

The Community has established an East African Standards Committee (EASC) mandated to develop and issue East African Standards (EAS). The Committee is composed of representatives of the National Standards Bodies in Partner States, together with the representatives from the public and private sector organizations in the community.

East African Standards are developed through Technical Committees that are representative of key stakeholders including government, academia, consumer groups, private sector and other interested parties. Draft East African Standards are circulated to stakeholders through the National Standards Bodies in the Partner States. The comments received are discussed and incorporated before finalization of standards, in accordance with the Principles and procedures for development of East African Standards. XXXXXX.

East African Standards are subject to review, to keep pace with technological advances. Users of the East African Standards are therefore expected to ensure that they always have the latest versions of the standards

they are implementing.

The committee responsible for this document is Technical Committee EASC/TC 037, Utensils, cutlery, Sanitary wares and fittings and domestic hardware.

Attention is drawn to the possibility that some of the elements of this document may be subject of patent rights. EAC shall not be held responsible for identifying any or all such patent rights.

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DRAFT EAST AFRICAN STANDARD DEAS 1017-2:2019

© EAC 2019 – All rights reserved 1

Sanitary appliances (Vitreous china) — Specifications — Part 2: Wash

down water closets

1 Scope

This Draft East African standard covers the requirements for construction, dimensions and tolerances, finish and marking for vitreous wash down water closets.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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.

DEAS 1017-1:2019, Vitreous sanitary appliances — General requirements

EAS 355, Toilet paper – Specification

3 Terms and definitions

For the purposes of this document, the terms and definitions given in DEAS 1017-1:2019 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http://www.iso.org/obp

4 General requirements

The general requirements relating to materials, manufacture, glazing, defects, minimum thickness, performance and methods of tests shall conform to DEAS 1017-1:2019.

5 Traps

Pedestal pans shall have either a "P" trap or an "S" trap, as required, and wall-mounted pans shall have a "P" trap. The angle of the outlet shall be the relevant of the values for Ф given in figure 1 or figure 2.

The trap shall be large enough to allow a sphere of diameter 65 mm ± 1 mm to pass through it.

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Type A pan (with seat fixing holes) Section X - X (pan with straight "P" trap)

Figure 1 — Type A (pedestal) water-closet pan

Table 1 — Dimensions of type A (pedestal) water-closet pan

Figure 2 — Type B (wall-mounted) water-closet pan

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Table 2 — Dimensions of type B (wall-mounted) water-closet pan

6 Dimensions

The dimensions of pans shall conform to the values given in the relevant Figure 1 or Figure 2.

7 Construction and finish

7.1 Water closet shall be of one-piece construction. Each water closet shall be provided with not less than two floor fixing holes having a minimum diameter of 6.5 mm and shall have an integral flushing rim of suitable type. It shall also have an inlet or supply horn, for connecting the flushing pipe, of dimensions conforming to E in Table 2. The flushing rim may be box rim or open rim type. In case of box rim, adequate number of holes and slots shall be provided. The flushing rim and the inlet shall be of the self-draining type and a weep-hole shall be provided at the flushing inlet of the water closet.

7.2 Each water closet shall have an integral trap with either S or P outlet.

7.3 Where required, each water closet shall have anti-siphonage vent horn on the outlet side of the trap, with dimension conforming to those given in Figure 1 and on either right or left hand or centre as specified at an angle of 45° (see Figure 1) and invert of vent hole not below the central line of the outlet.

7.4 Water closets shall be supplied with appropriate connectors required to connect the outlet to the drainage system.

7.5 The anti-siphonage vent where required shall be provided in the special connector.

7.6 Inside surface of water closet and trap shall be uniform and smooth in order to ensure an efficient flush.

8 Tests

8.1 General

The water closet shall satisfy the requirements of tests prescribed in 8.2, 8.3, 8.4, 8.5, 8.6, 8.7 and 8.8. These tests shall be conducted by connecting the water closet to a low level cistern. A cistern shall be fixed such that the height between the top of the water closet and the bottom of the cistern shall not be more than 300 mm and the water closet shall be connected to the cistern by 40 mm normal diameter flushing pipe. These tests shall be carried out by using the flushing cistern of the capacity with which the appliance is to be used.

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8.2 Flush tests

8.2.1 Toilet paper test

The water closet shall be filled with water to its normal water seal level and charged with six pieces of loosely crumpled toilet paper conforming to EAS 355. It shall then be flushed. This test shall be repeated four times and the pan shall discharge the full charge of the paper at least three out of four times.

8.2.2 Smudge test

The whole of the interior surface of water closet to 40 mm below the flushing rim shall be smudged with quartz powder of contrasting colour passing through 1.18 mm sieve and shall then be flushed observing carefully the surface of the water closet during the flushing. Immediately after the flushing, there shall be no smudge left on the bowl.

8.2.3 Ball test

8.2.3.1 Single ball test

The ball shall be made of non-absorbent material. The relative density of the ball shall be between 1.075 and 1.080. The diameter of the ball shall be 43 + 0.5 mm. Place the ball into the water closet to be tested and then flush the water closet. The ball shall be discharged in the normal manner.

8.2.3.2 Fifty ball test

Fifty balls of non-absorbent material, having a mass each of 3.7 + 0.1 g, and a diameter of 20 + 0.1 mm shall be dropped into the water closet bowl and flushed. Repeat the test five times. A minimum of 85 % of all balls should be flushed out in the five tests.

8.3 Holding capacity test

The water closet when sealed at the outlet and vent (if fitted) with water-tight seal shall be capable of holding not less than 10 l of water between the normal water level and the highest possible water level of the water closet as installed.

8.4 Load bearing test

The water closet shall be fixed in a stable arrangement on the floor with proper screw. A load of 4005

0

kg or a

force of 4.05 kN shall be applied for period of one hour by placing it on a wooden beam with a cross section of 100 mm x 100 mm positioned across the centre of the opening of the top surface of the water closet. There shall be no damage or defect which shall occur to the water closet.

8.5 Saw dust test

8.5.1 Specification of the saw dust

20 g of dry saw dust test sifted through 2 mm sieve

8.5.2 Procedure

Set up the water closet, cistern or flush valve and flush pipe (if required) as specified by the manufacturer. Charge the water closet with water to its designed water seal level. Fully wet the entire internal surface of the water closet below the rim. Sprinkle 20 g of fine dry saw dust of above specification on the inside of the water closet between the normal water level and the flushing rim as completely and evenly as possible. Then flush the water closet. The sprinkle saw dust shall be cleaned below 40 mm of rim of water closet.

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8.6 Splash test

Set up the water closet, cistern or flush valve and flush pipe (if required) as specified by the manufacturer. Charge the water closet with coloured water to its design water seal level. Ensure that the floor area is cleaned and dry where the splash test to be carried out. Activate the flush valve or cistern to the discharge the water closet. Observe and record whether flushing water splashed over rim onto the floor.

Repeat the test 5 times. Record whether the flushing water splash over the rim onto the floor. Up to 10 isolated droplets shall not be the cause for rejection.

9 Sampling process and inspection

9.1 Visual inspection

The number of water closets to be selected from a lot shall be in accordance with Table 3. While taking samples from the lot, approximately, equal number of water closets shall be randomly taken for each size so as to constitute the requisite sample size. Each water closet in the sample shall be subjected to visual inspection. A water closet failing in one or more of these requirements shall be considered as defective.

Table 3 — Scale of sampling and acceptance criteria for finish and marking inspection

Lot size Sample size

Permissible number of defective water closets

≤25 8 0

26-50 13 0

51-90 20 1

91-150 32 2

151-280 50 3

281-500 80 5

501-1200 125 7

The lot shall be considered as conforming to the visual requirements if the number of defectives found in the sample does not exceed the corresponding permissible number of defective water closets given in Table 3

9.2 Dimensional, construction and performance tests

The number of water closets shall be selected at random from a lot having been found satisfactory according to 9.1 in accordance with Table 4.

Table 4 — Scale of sampling and acceptance criteria for dimensional, construction and performance tests

Lot size Sample size Permissible number of defective water closets

≤90 5 0

91-150 8 0

151-500 13 0

501-1200 20 1

The lot shall be considered as conforming to these requirements if the number of defectives do not exceed the permissible number of defective water closets given in Table 4.

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10 Marking

Each piece of water closet shall be legibly and indelibly marked at a suitable place with the following information:

a) name or trade-mark of the manufacturer, and

b) batch/lot number.

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Bibliography

[1] IS 2556-2:2004, Vitreous Sanitary Appliances (Vitreous China) — Part 2: Specific Requirements of Wash-down Water Closets

[2] IS 9140:1996, Methods for sampling of vitreous and fire clay sanitary appliances

[3] SANS 497:2011, Glazed ceramic sanitary ware

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