PUBLIC REVIEW DRAFT DRAFT UGANDA STANDARD  
  DUS DEAS  1017 -4 
First   Edition  
2019-mm-dd 
 
 Reference number  
DUS DEAS  1017 -4: 2019 
© UNBS 2019 
   
Sanitary appliances (vitreous china) — Part 4: Squatting pans 
 
 PUBLIC REVIEW DRAFTDUS DEAS 1017-4: 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  
 PUBLIC REVIEW DRAFTDUS DEAS 1017-4 : 2019 
© UNBS  2019 - All rights reserved                iii 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 1017-4: 2019, Sanitary appliances (vitreous china) — Part 4 : 
Squatting pans , is identical with and has been reproduced from an East African Standard, DEAS 1017-4 : 
2019, Sanitary appliances (vitreous china) — Part 4 : Squatting pans , 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." 
 
 
 
 
  PUBLIC REVIEW DRAFT
 DEAS 1017 -4:2019  
ICS 91.140.70  
 
© EA C 2019                                                                                                                              First  Edition 2019  
 EAST AFRICAN STANDARD 
Sanitary appliances (vitreous china) — Specification — Part 4: Squatting 
pans 
EAST AFRICAN COMMUNITY PUBLIC REVIEW DRAFTPUBLIC REVIEW DRAFTDEAS 1017-4:2019 
ii © EAC 2019  – All rights reserved  
 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. PUBLIC REVIEW DRAFTDEAS 1017-4:2019 
© EAC 2019  – All rights reserved  iii 
 Contents Page 
Foreword ............................................................................................................................................................ iv 
1 Scope ...................................................................................................................................................... 1  
2 Normative references ............................................................................................................................ 1  
3 Terms and definitions ........................................................................................................................... 1  
4 General requirements ........................................................................................................................... 1  
4.1 Performance requirements ................................................................................................................... 1  
4.2 Dimensions and tolerances .................................................................................................................. 2  
5 Construction .......................................................................................................................................... 3  
6 Finish ...................................................................................................................................................... 4  
7 Tests ....................................................................................................................................................... 4  
7.1 Flushing tests ........................................................................................................................................ 4  
7.1.1  Toilet paper test ..................................................................................................................................... 4  
7.1.2  Smudge test ........................................................................................................................................... 4  
7.1.3  Water holding capacity test .................................................................................................................. 4  
7.1.4  Saw Dust Test ........................................................................................................................................ 4  
7.1.5  Splash test ............................................................................................................................................. 5  
7.1.6  Ball test ................................................................................................................................................... 5  
7.1.7  Load bearing test ................................................................................................................................... 5  
7.1.8  Water renewal test ................................................................................................................................. 5  
7.1.9  Visual examination test ......................................................................................................................... 5  
8 Sampling process, inspection and lot inspection ............................................................................. 5  
9 Marking ................................................................................................................................................... 5  
Bibliography ........................................................................................................................................................ 6  
 PUBLIC REVIEW DRAFTDEAS 1017-4:2019 
iv © EAC 2019  – All rights reserved  
 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. 
 PUBLIC REVIEW DRAFTDRAFT EAST AFRICAN STANDARD  DEAS 1017 -4:2019  
 
© EAC 2019  – All rights reserved  1 
 Sanitary appliances (vitreous chin a) — Specification — Part 4: 
Squatting pans 
1 Scope  
This Draft East Africa Standard specifies the requirements for dimensions, construction, materials, and 
performance for vitreous China squatting water closet pans. 
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 (vitreous china) — Part 1: General requirements 
DEAS 1017-2:2019 , Sanitary appliances (vitreous china) — Part 2: Wash down water closets — 
Specifications 
DEAS 1017-6:2019 , Sanitary appliances (vitreous china) — Part 6: Flushing cisterns — Specifications 
EAS 355 , Toilet paper — Specifications 
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 material, glazing, defects, minimum thickness and tolerances shall 
conform to DEAS 1017-1:2019. 
4.1 Performance requirements 
4.1.1  Squatting pans shall pass all the flush tests as given in clause 7 of this standard.  
4.1.2  Traps for Squatting pans should be designe d to minimize the risk of blockage and should prevent the 
leakage of contaminated water and foul air into the building.  
4.1.3   Squatting pans including their traps conforming to the requirements in clause 4, shall be deemed to 
be durable under normal operating conditions.  PUBLIC REVIEW DRAFTDEAS 1017-4:2019 
2 © EAC 2019  – All rights reserved  
 4.2 Dimensions and tolerances 
4.2.1  The functional and connecting dimensions of S and P traps shall conform to those given in Tables 1 
4.2.2 Squatting pans shall comply with the dimensions shown in Table 1 as indicated in Figure 1 and shall be 
subjected to the tolerances permitted: 
Table 1 — Dimensions of squatting pans and traps  
Description  Code letterin g 
Figure 1  Dimensions (mm)  
Integral trap  Non-integral trap  
Height  A 320 ± 20  280 ± 20  
Overall length  B 600 min.  475 min.  
Width of pan C 265 min.  
310 max.  265 min.  
310 max.  
External diameter of outlet of 
pans  D 110 max.  110 max.  
Internal diameter of flush inlet 
socket  E 50 m  50 min.  
Length of squatting plate  F 230 min.  230 min.  
Width of squatting plate  G 100 min.  100 min.  
Depth o f flush inlet socket  H 25 min.  25 min.  
Depth of water seal  I 50 ± 5  50 ± 5  
Clearance below tip of plate  J 75 min.  75 min.  
External diameter of outlet of 
the trap  K — 110 max.  
Internal length  L 400 ± 10   PUBLIC REVIEW DRAFTDEAS 1017-4:2019 
© EAC 2019  – All rights reserved  3 
 Figure 1 a) — Squatting WC pan (integral trap) 
 
 
Figure 1 b) — Squatting WC pan (non-integral trap)  
5 Construction 
5.1 General 
The WC pan shall be of one-piece construction. Each pan shall have an integral flushing rim.  The inside of 
the bottom of the pan shall be designed with a minimum slope of 250 from the front towards the outlet to 
enable easy and quick disposal while flushing.  The pan shall be provided with a trapped outlet. The designed 
flushing surface shall be smooth and regularly glazed to enable cleaning and prevent accumulation of 
PUBLIC REVIEW DRAFTDEAS 1017-4:2019 
4 © EAC 2019  – All rights reserved  
 excrement The squatting pan shall comply with the dimensions shown in Table 1 and indicated in Figure 1 
and shall be subject to the tolerances permitted 
5.2 Each pan shall have either S or P trap with or without gas vent. 
6 Finish 
The inside of the pan shall be glazed uniform and smooth in order to ensure an efficient flush. 
7 Tests 
7.1 Flushing tests 
Tests for squatting pans shall be done in accordance with requirements given in 7.1.1, 7.1.2, 7.1.3, 7.1.4 
7.1.5 , 7.1.6, 7.1.7, 7.1.8 and 7.1.9. For carrying out these tests, a flushing cistern conforming to DEAS 1017-
6:2019 shall be fixed such that the height between the top of closet pan and bottom of the cistern is 1 250 
mm, minimum for high level and 700 mm, minimum for low level and the closet pan is connected with cistern 
by a 40 mm outer diameter pipe. 
7.1.1 Toilet paper test 
The pan shall be filled with water to its nominal water seal level and charged with six pieces of EAS 355 toilet 
paper . 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 thrice out of four times. 
7.1.2 Smudge test 
The whole of the interior surface of the pan to 40 mm below the flushing rim shall be smudged with quartz 
power of contrasting colour passing through 1.18 mm sieve and shall then be flushed, carefully observing the 
surface of the pan during the flushing. Immediately after the flushing, there shall be no smudge left on the pan. 
7.1.3  Water holding capacity test 
The pan, when sealed at the outlet and vent (if fitted) with watertight 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 pan as installed. 
7.1.4 Saw Dust Test 
7.1.4.1 Specification of the saw dust 
20 g of dry sawdust test sifted through 2 mm sieve. 
7.1.4.2 Procedure 
Set up the pan, cistern or flush valve and flush pipe (if required) as specified by the manufacturer. Charge the 
pan with water to its designed water seal level. Fully wet the entire internal surface of the pan below the rim. 
Sprinkle 20 g of fine dry sawdust of above specification on the inside of the pan between the normal water 
level and the flushing rim as completely and evenly as possible. Then flush the pan. 
The sprinkle saw dust should be cleaned below 40 mm of rim of pan. PUBLIC REVIEW DRAFTDEAS 1017-4:2019 
© EAC 2019  – All rights reserved  5 
 7.1.5  Splash t est 
Set up pan, cistern or flush valve and flush pipe (if required) as specified by the manufacturer. Charge the pan 
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 discharge the squatting pan. 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 rime onto the floor. Up to 10 isolated droplets shall not be the cause for 
rejection. 
7.1.6  Ball test 
7.1.6.1 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. 
7.1.6.2 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. 
7.1.7  Load bearing test 
The water closet shall be fixed in a stable arrangement on the floor with proper screw. A load of 400
5
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. 
7.1.8  Water renewal test 
Place one millimetre normal potassium permanganate solution in the trap and mix thoroughly by stirring and 
flush the pan/suit. The trace of colour shall be cleared completely by the second flush for each test.  
7.1.9  Visual examination test 
When examined visually from a distance of 0.6 m, the surface of the WC pan shall not show, to the unaided 
eye, blemishes or defects covered in DEAS 1017-1:2019. 
8 Sampling process, inspection and lot inspection 
The recommended method of sampling, process inspection and lot inspection shall be the same for water 
closets as given in DEAS 1 017-2:2019. 
9 Marking 
Each piece of squatting pan shall be legibly and indelibly marked at a suitable place with the following: 
a) name or trade mark of the manufacturer, and 
b) batch/lot number. PUBLIC REVIEW DRAFTDEAS 1017-4:2019 
6 © EAC 2019  – All rights reserved  
 Bibliography 
[1] IS 2556-2:2004, Vitreous Sanitary appliances (vitreous china) — Specification part 3 Specific 
requirements of squatting pans 
[2] IS 2556-7:2004, Vitreous sanitary appliances (vitreous china) — Specification: Part 7 — Specific 
requirements of accessories for sanitary appliances 
[3] KS 1024-2:2010, Vitreous china water closet pans — Specification — Part 2: Vitreous china squatting 
washdown water closet pans 
 PUBLIC REVIEW DRAFTDEAS 1017 -4:2019    
 
© EAC 2019  – All rights reserved