G/TBT/N/MEX/319  
 
7 September 2016  
(16-4753) Page: 1/2 
Committee on Technical Barriers to Trade  Original: Spanish  
 
  NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6.  
 
1. Notifying Member:  MEXICO  
If applicable, name of local government involved (Articles 3.2 and 7.2):   
2. Agency responsible:  Secretaría de Comunicaciones y Trans portes (Ministry of 
Communications and Transport ) 
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of  agency or authority designated to handle comments 
regarding the notification shall be indicated if differ ent from above:   
Comité Consultivo Nacional de Normalización de Transporte Terrestre  (National Advisory 
Committee on Standardization for Land Transport)  
Calzada de las Bombas No. 411 , piso 11  
Ciudad de México, Distrito Federal  
Website:  http://www.sct.gob.mx/transporte -y-medicina -preventiva/autotransporte -
 federal/comite -consultivo -nacional -de-norm alizacion -de-transporte -terrestre/  
or 
Dirección General de Normas  (General Directorate of Standards ) 
Subsecretaría de Competitividad y Normativid ad (Under -Secretariat for Competitiveness 
and Standardization ) 
Secretaría de Economía  (Ministry of the Economy ) 
Av. Puente de Tecamachalco Núm. 6  
Col. Lomas d e Tecamachalco, Sección Fuentes  
Naucalpan de Juárez, C.P. 53950, Estado de México  
Tel.:  (+52) 55 5229-6100, Ext. 43244  
Email:  sofia.pacheco@economia.gob.m x and/or normasomc@economia.gob.mx  
3. Notified under Article 2.9.2 [ X], 2.10.1 [  ], 5.6.2 [  ], 5.7.1 [  ], other:   
4. Products covered (HS or CCCN where applicable, otherwise na tional tariff 
heading.  ICS numbers may be provided in addition, where applicable):  Sleepers 
(cross -ties) of wood  (tariff heading 4406)  
5. Title, number of pages and language(s) of the notified document:  PROY -NOM-056-
SCT2-2015, "Para durmientes de madera" (Draft Mexican Official Standard PROY -NOM-
056-SCT2-2015: "Wooden s leepers ") (20 pages , in Spanish ) 
6. Description of content:  The notified draft Mexican Official Standard establishes  the 
characteristics and  properties  of and impregnation process for impre gnated wooden 
sleepers intended for use  in the Mexican railway transport system  and the delivery 
conditions to be met by the suppliers of such products. It seeks  to ensure  that sleepers 
maintain  track gauge , transmit  loads and forces  from rail  to ballast , and have a long 
service life  under  optimal conditions .  
The draft Standard sets out the  conditions  and processes applicable to impregnated 
wooden sleepers  (manufacture , impregna tion, inspec tion, approval  and shipment)  to 
ensure that such products  meet the strength and durability requirements for  use in the G/TBT/N/ MEX/319  
 
- 2 - 
 
  Mexican railway system . 
The specifications laid down in this draft Standard apply to all  domestically produced or 
imported impregnated wooden sleepers  intended for use in  the different types of  track in 
the Mexican railway system . 
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Establishment of the  minimum values  for the physico -mechanical properties , 
impregnatio n requirements , permissible defects and limit s applicabl e to wooden sleepers , 
as well as other provisions governing the installation of such sleepers  in track in the 
Mexican railway system . 
8. Relevant documents:   
 Mexican Standard NMX-C-410-ONNCCE -2000: Industria de la Construcción  - 
Vivienda de Madera  - Reten ción y Penetración de Sustancias Preservadoras en 
Madera  - Métodos de prueba  (Construction industry - Wooden housing  – Retention 
and penetration of wood preservatives  - Test methods ); 
 Mexican Standard NMX-C-178-ONNCCE -2001: Industria de la Construcción  - 
Preservadores para Madera  - Clasificación y Requisitos  (Construction industry - Wood 
preservatives  - Classification and requirements ); 
 Mexican Standard NMX-C-419-ONNCCE -2001: Industria de la Construcción  -
Preservación de maderas  - Terminología  (Construction  industry - Wood preservation  
- Terminology );  
 Mexican Standard NMX-C-443-ONNCCE -2006: Industria de la Construcción  – Madera  
- Contenido de Humedad de la Madera  - Métodos de Prueba  (Construction industry – 
Wood - Moisture content of wood - Test methods ); 
 Mexican Standard NMX-Z-12/1-1987: Muestreo para la inspección por atributos. 
Parte 1: Información general y aplicaciones  (Sampling for inspection by attributes. 
Part 1: General information and application ); 
 Mexican Standard NMX -Z-12/2-1987:  Muestreo para la  inspección por atribu tos. 
Parte 2: Métodos de muestreo, tablas y gráficas  (Sampling for inspection by 
attributes. Part 2: Sampling procedures, tables and graphs ); 
 Mexican Standard NMX-Z-12/3-1987: Muestreo para la inspección por atributo. Parte 
3: Regla d e cálculo para la determinación de planes de muestreo  (Sampling for 
inspection by attributes. Part 3: Calculation rule for determining sampling plans ).  
9. Proposed date of adoption:  The notified draft Mexican Official Standard will be adopted 
upon its pu blication in the Official Journal as a final standard.  
Proposed date of entry into force: The notified draft Mexican Official Standard will enter 
into force 60 calendar days after publication in the Official Journal , whereupon  Mexican 
Official Standard  NOM-056-SCT2-2000 "Wooden s leepers ", published in the Official Journal  
on 2 May 2001, will be withdrawn.  
10. Final date for comments:  60 calendar days after publication in the Official Journal 
(2 September 2016)  
11. Texts available from:  National enquiry p oint [ X] or address, telephone and fax 
numbers  and email and website addresses, if available , of other body:   
Secretaría de Economía  
Subsecretaría de Competitividad y Normatividad  
Dirección General de Normas  
Tel.: (+52) 55 5729 -9100, Ext. 432 17 
Fax: (+52) 55 5520 -9715 
Email:  normasomc@economia.gob.mx  and/or sofia.pacheco@economia.gob.mx   
Website:  http:// www.economia -noms.gob.mx/?P=144  
 http://www.dof.gob.mx/nota_detalle.php?codigo=5450950&fecha=02/09/2016  
 https://members.wto.org/crnattachments/2016/TBT/MEX/16_3692_00_s.pdf