DRAFT UGANDA STANDARD  
  DUS 1970 -3 
First  Edition  
2021 -mm-dd 
 
 
 Reference number  
DUS 1970 -3: 2021  
© UNBS 2021   
  
Textile s — Garments — Part 3: Trousers  and shorts  
 
 
 
 DUS 1970 -3: 2021  
ii © UNBS 2021  – 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 2021  
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permission from UNBS.  
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Uganda National Bureau of Standards  
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Uganda  
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 DUS 1970 -3:2021  
© UNBS 2021  – 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 i s mandated to co -
ordinate the elaboration of standards and is  
(a) a member of International Organisation for Standardisation (ISO) ;  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards ; and  
(c) the National Enquiry Point on TBT  Agreem ent 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 key stakeholders 
includi ng 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 315, Textiles and related 
products . 
 DRAFT UGANDA STANDARD  DUS 1970 -3: 2021  
 
© UNBS 2021 – All rights reserved  1 
 Textiles — Garments  — Part 3: Trousers  and shorts  
1 Scope   
This Draft Uganda Standard  specifies specific requirements  and test methods for trouse rs and shorts  
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.  
US ISO 139 , Textiles — Standard atmospheres f or conditioning and testing  
US ISO 3801, Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area  
US ISO 9 073-1, Textiles — Test methods for nonwovens — Part 1: Determination of mass per unit area  
US ISO 12945 -1, Textiles — Determination of fabric propensity to surface fuzzing and to pilling — Part 1: 
Pilling box method  
US ISO 12947 -1, Textiles — Determination of the abrasion resistance of fabrics by the Martindale method — 
Part 1: Martindale abrasion testing apparatus  
US ISO 13934 -1, Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force and 
elongation at maximum force using the strip method  
US ISO 13938 -2, Textiles — Bursting properties of fabrics — Part 2: Pneumatic method for determination of 
bursting strength and bursting distension  
3 Terms and definitions   
For the purposes of this document, the following terms and definitions 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  
3.1  
trousers  
outer garment covering the body from the waist to the ankles, with equal separate parts for each leg  
3.2  
shorts  
garment worn over the pelvic area, circling the waist and splitting to co ver the upper part of the legs, 
sometimes extending down to the knees but not covering the entire length of the leg  DUS 1970 -3: 2021  
2 © UNBS 2021  – All rights reserved  
 4 Requirements  
4.1 General  requirement s 
The trouser s and shorts  shall comply with the requirements specified in DUS 1970 -1. 
4.2 Specific req uirements  
4.2.1  Physical and c hemical requirements  
The trousers  and shorts or the fabric used for the manufacture of trousers  and shorts shall conform to the 
requirements given in Table 1.  
Table 1 — Specific  requirements of fabric used to manufa cture trous ers 
Parameter  Requirement  Test method  
Mass per unit area, g/m2, min. 190 US ISO 3801 or ISO 
9073 -1 
Breaking strength, N, 
min. Warp direction  600 US ISO 13934 -1 
Weft direction  400 
Tear strength (for both directions), N, min. 25 US ISO 13937 -1 
Burstin g strength  (knitted) , kPa, min. 200 US ISO 13938 -2 
Abrasion (2000 rubs), min. No noticeable wear  US ISO 12947 -1   
Piling resistance (After 5 h of test), min. 4 US ISO 12945 -1 
 
4.2.2  Size designation and dimensions  
4.2.2 .1 A typical shape of trousers  is shown in Figure.1.  
 DUS  1970 -3: 202 1 
© UNBS 2021 – All rights reserved  3 
 Figure 1 — A typical shape of trousers  
Where;  
A- Waist circumference / waist girth  
B- Seat circumference /hip girth  
C- Inseam length /inside leg length  
D- Outseam length /outside leg length  
4.2.2.2  The dimensions of trousers of d ifferent sizes and d esigns should  conform to the requirements of 
Table 2 and Table 3 when measured by the method specified in Annex A . Unless otherwise, dimensions 
should be agreed upon between the purchaser and the manufacturer.  
NOTE  The dimensions/sizes given in Table 2 and  Table 3 are for guiding the manufacturer.  
Table 2 — Dimensions of men’s and boys’  trousers  and shorts  
Size designation  Waist girth,  
cm Hip girth,  
cm 
24 60 84 
26 65 89 
28 70 94 
30 75 99 
32 80 104 
34 85 109 
36 90 114 
38 95 119 
40 100 124 
42 105 129 
44 110 134 
46 115 139 
48 120 144 
50 125 149 
52 130 154 
54 135 159 
56 140 164 
58 145 169 
60 150 174 
NOTE  These dimensions are based on the British sizing system. An 
equivalent of the British sizing chart may be considered . 
 
 DUS 1970 -3: 2021  
4 © UNBS 2021  – All rights reserved  
 Table 3 — Dimension s of women ’s and girls’  trousers  and shorts  
Size designation  Low waist,  
cm Hip, 
cm 
XXS (4)  74 86 
XS (6)  78 90 
S (8)  82 94 
M (10)  86 98 
L (12)  90 102 
XL (14)  94 106 
XXL (16)  98 110 
NOTE  These dimensions are based on the British sizing system. An 
equivalent of the British sizing chart may be considered . 
 
4.2.3  Seams and stitches  
The trousers  and shorts shall be assembled with lock/chain stitches regulated at not less than 4 stitches per 
cm. 
4.2.4  Hems  
The bottoms of the regular trousers  and shorts  may be hemmed. The hem shall be sewn in place with a slip -
stitch or hemming stitch for turned under or seam binding finishes and a blind stitch for overcast finishes. The 
completed hem shall be inconspicuous from the outside and the raw edges finished secure ly without bulk.  
4.2.5  Securing belt loops  
If the trousers are provided with belt loops, the ends of loops shall be reinforced with three rows of stitches or 
securely stitched.  
4.2.6  Buttons and buttonholes  
4.2.6.1 The buttons shall be stitched with not le ss than 12 stitches through each pair of hole when sewn 
by machine or 11 stitches of single thread and five stitches of double thread when sewn on by hand. The 
thread shall be wound round the sttches six times when single threads or three times when using double 
threads to form a neck. All ends shall be securely fastnened.  
Note  In case of button stitching by machine, the winding of thread around the button to form a neck is not possible.  
4.2.6.2 The number of stitches on buttonholes shall be not less than 8  per cm when stitching is carried 
out manually and not less than 9 per cm when stitched on machine. Buttonholes shall be bartacked with not 
less than 5 stitches or fish tailed and shall be cleanly cut. All ends of threads shall be securely fastened. The 
length of the buttonhole shall be 0.3 cm greater than the diameter plus the thickness of the button.  
4.2.7  Outlet allowance  
An outlet allowance of 4 cm in addition to the seam allowance shall be provided at the back seat seam near 
the waistline.  DUS  1970 -3: 202 1 
© UNBS 2021 – All rights reserved  5 
 Annex  A 
(normative)  
 
Determination of dimensions of trousers  and shorts  
A.1 Principle  
Lay a pair  of trousers  or shorts on a flat table removing any curls and without stretching, take t he 
measurements from one  end to the other using a steel rule. Repeat the procedure for other specimens in the 
laboratory sample.  
A.2 Apparatus  
A.2.1  Flat table  
A.2.2  Steel rule, accuracy of at least 1 mm  
A.2.3  Calculator  
A.3 Sampling  
From a l aboratory sample, take one pair  of trousers  or shorts and subject it to conditioning prior to tes ting. 
A.4 Conditioning  
Condition the specimen in accordance with US ISO 139.   
A.5 Procedure  
Take each pair of trousers  or shorts constituting the test sample. Lay it flat on a table. Remove by hand all 
creases and wrinkles without distorting it. Measure co rrect to the nearest 0.5 cm the dimensions given in 
Table 2  and Table 3 . 
Repeat the procedure for any other specimen that may be required in the laboratory sample.  
A.6 Calculation and expression of results  
Take the average of the individual measurements  and double the result t o obtain the dimensions  
 DUS  1970 -3: 202 1 
© UNBS 2021 – All rights reserved  7 
 Bibliography  
DKS 559 -1:2019, Men’s and boys’ trousers — Specification — Part 1: Making up requirements   
8 © UNBS 2021  – All rights 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 schem e operated by 
the Uganda National Bureau of Standards and in conjunction 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 unde r a system of supervision, control and testing in accordance with the 
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 te rms and conditions of licensing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 DUS 1970 -3: 202 1   
 
ICS 61.020  
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