DRAFT UGANDA STANDARD  
 
  DUS 627  
Second  Edition  
2021 
 
 
 Reference number  
DUS 627:20 21 
© UNBS 20 21 
  
Footwear — Test methods for heels — Determination of Pull off 
strength for ladies’ shoe heels  
 DUS 627:20 21 
ii © UNBS 20 21 – All right s 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 202 1  
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
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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: unbs@infocom.co.ug  
 DUS 627 :2021 
© UNBS 20 20 – All rights reserved  iii 
 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 member of International Organisation for Standardisation (ISO) and  
a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
the Natio nal 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 consi sts of key stakeholders 
including government, academia, consumer groups, private sector and other interested parties.  
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.  
The committee responsible for this document is Technical Committee UNBS/TC 7, Textiles, Leather, Pape r 
and related products, Subcommittee SC 2, Leather and related products.  
This second edition cancels and replaces the first edition ( US 627:2007), which has been revised:  
The title has been changed from “Pull off strength for ladies’ shoe heels — Specifica tion” to Footwear — Test 
methods for heels — Determination of Pull off strength for ladies’ shoe heels ” 
 DRAFT UGANDA STANDARD  DUS 627:20 21 
 
© UNBS 20 21 – All rights reserved                  1 
 Footwear — Test methods for heels — Determination of Pull off 
strength for ladies’ shoe heels  
1 Scope  
This draft Uganda Standard specifies a method fo r the determination of the pull off strength for ladies ’ shoe 
heels.  
2 Normative References  
There are no normative references in this document.  
3 Terms and definitions  
ISO and IEC maintain terminological databases for use in standardization at the followin g addresses:  
— ISO Online browsing platform: available at http://www.iso.org/obp  
No terms and definitions are listed in this document.  
4 Apparatus  
Tensile -strength testing machine  fitted with vice grips and set to move at a uniform rate of traverse 100 
mm/min 
5 Preparation of test samples  
Take one pair of shoes from the batch to be tested. Cut the back part of the upper to facilitate clamping in the 
vice grips, but without weakening the heel and waist area.  
6 Procedure  
Clamp the heel firmly in one grip of the tensile -strength testing machine and the back part of the shoe in the 
other grip. Set the machine in motion and record the force required to pull the heel off the shoe.  
7 Evaluation  
Calculate the mean from two test samples and report this as the pull o ff strength.  
 
  
2 © UNBS 20 21 – All right s reserved  
 Bibliography  
US 627:2006,  Pull off strength for ladies shoe heels   
© UNBS 20 20 – All rights reserved  iii 
   
4 © UNBS 20 21 – All right s reserved  
 Certification marking  
Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards 
(UNBS) Certification Mark shown in the figure below.  
The use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made 
thereunder. This mark can be used only by those licensed under the certification mark scheme operated by 
the Uganda National Bureau of Standards and in conjun ction with the relevant Uganda Standard. The 
presence of this mark on a product or in relation to a product is an assurance that the goods comply with the 
requirements of that standard under a system of supervision, control and testing in accordance with t he 
certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are 
continually checked by UNBS for conformity to that standard.  
Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 DUS 627:20 21   
 
ICS nn.nnn. nn 
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© UNBS 20 21 – All rights reserved