M&E system

Mechanical and electrical systems are referred to as M&E systems. It stands for Electromechanical and Terminology. Nowadays, M&E systems are often built in buildings, workplaces, apartment blocks, etc. to assist the electromechanical system run more flexibly and smoothly, and they are regarded as an indispensable part.

When there are two parts created and mechanical in a construction project, the M&E system accounts for around 40 - 60% of the total architecture. Drive efficiency with an M&E firm system can reach 70-80%.

The M&E system is an essential part of every public building. This system is required in buildings for lighting operations, ovens, fans, elevators, etc. Buildings have many electromechanical systems that are related to the building's plans, aims, and goals, as well as interior elements. Systems with appropriate electrical power are installed in industrial, residential, and commercial structures to assure various uses.


What items does the M&E system in the building include?

Commonly, the M&E systems in buildings are separated into four major categories, which include:

  • Plumbing and Sanitary (P&S): water supply and drainage systems, and chemicals and sanitary equipment.
  • HVAC (Heating, Ventilation, and Air Conditioning): an air conditioning system.
  • Electrical: The electrical system is made up of both heavy and light electricity.
  • Fire Alarm & Fire Fighting: A system that prevents and fights fires.
  • The Mechanical segment, for instance, comprises machinery such as fire protection systems, water supply and drainage systems, chemicals and sanitation systems, ventilation and air conditioning systems, and LPG gas and compressed air systems.

The Electrical segment will cover electricity-related  such as power source, distribution, lighting, light electricity, heavy electricity, & control.


M&E design standards

What are some M&E system design and installation standards?QCVN 12:2014 National technical standards for home and building electrical systems.

QCVN 05:2008/BXD Life and health safety in housing and the public.

QCVN QTD-08:2010/BCT Technical regulation of low voltage electricity 
2006  The Electrical Equipment Regulations

TCVN 9206:2012 (replacing TCVN 27:1995) Design requirements for the installation of electrical equipment in homes and public construction.

TCVN 9207:2012 (replacing TCVN 25: 1995) Design requirements for the construction of electrical transmission lines in homes and public construction.

TCVN 9208:2012 Cable and wire construction in industrial work.

TCVN 394: 2007 Electrical safety element of the standard for the development and installation of electrical equipment in construction activities. 

TCVN 7447-1:2004 Building electrical installations - Part 1: Basic principles, assessment of general characteristics, definitions.

TCVN 7447-5-51:2004 Building electrical systems - Part 5-51: Electrical equipment selection and setup - General Rules

TCVN 7447-5-53:2005 Building electrical installations - Part 5-53: Electrical equipment selection and setup - Isolated, switching, and control

TCVN 7447-5-54:2005 Structure electrical installations - Part 5-55: Electrical equipment selection and installation - Underground cable systems, protective wires, and protection bonding electrical wires

11 BC -18-2006 Regulation on electrical equipment – Part I: General regulations.

11 BC -19-2006 Regulation on electrical equipment – Part II: Electrical transmission systems.

11 TCN -20-2006 Part III: Distribution equipment and substations of the Electrical Equipment Regulation.

11 BC -21-2006 Code of Electrical Equipment – Part IV: Protection and Automatic.

Furthermore, each part of the M&E electrical system has its own set of standards. Customers can contact VietPhatGroup for assistance and a response as soon as feasible."


Details of the electrical part of the M&E . system

What is electricity in the M&E system? The electrical system, which contains heavy and light electricity, is the major source of electricity for the buildings.

High-voltage electricity

What is heavy electricity in the M&E system? This is the electricity power supply that is important in the electromechanical system's construction drawings, specifically:

  • The main source  provision system: places where medium voltage cabinets ,lines, transformers, automated voltage regulation systems, RMU, and intermediate relays.
  • The distribution cabinet system : The major source of power for industry and lighting.
    Lighting system for personal daily demands.
  • Socket system: Located throughout the building to satisfy the demand for energy for electrical devices.
  • Emergency lighting system: Also defined as exit and emergency lights, and they assist people escape in the case of a construction accident.
  • The lightning protection system:  includes a lightning rod and a grounding pile to ward off heavy rain and lightning strikes.

Light electricity

What is Light Electricity (ELV) in an M&E system? This is a high-tech electrical system served for users's demands and benefit. Although it makes a little contribution (around 10-20%), it affects the total quality of the project, specifically:

  • Network and internet system: This is a computer network system that connects to the world to serve their demands for educational, entertainment, work,....
  • Telephone system: Has a limited range of uses in buildings, businesses, organisations, .... for internal communication.
  • Surveillance security cameras: These are an essential part of ensuring the security, stability, and safety of people and property.

Public Communications: Make integration a success by swapping the world's channels via telephone operators.


Details of ventilation and air conditioning systems

The ventilation system (HVAC) is a type of exchange of quality air sources in a specific space. The major goal is to remove extraneous factors from the air,such as temperature, moisture, bacteria, fragrance, smoking, dust, and CO2. In today's workplaces, the ventilation system is primarily

  • Mechanical ventilation: The turbines rotate the air by converting electricity to mechanical energy. This form of system is frequently found in electronic devices such as blowers, air conditioners, air purifiers, ...
  • Natural ventilation: This system will help to filter the air in a specific region based on the changes in air pressure. The basic types can be mentioned, such as skylights, ventilation doors, ...
  • Ventilation and air conditioning systems

To ensure ventilation & air conditioning systems are both well-activated, we need to cover some of the design standards:

  • QCVN 09: 2005 Energy-efficient constructions.
  • QCVN 09: 2013 Energy-efficient constructions.
  • TCVN 5687: 2010 Ventilation, air conditioning, and heating - Design requirements
  • TCVN 306:2004 Homes and public buildings — microclimate parameters
  • TCVN 7830:2012 Ductless air conditioner -- energy efficiency.
  • TCVN 232:1999 Ventilation, air conditioning and cooling systems —  Manufracting , setup and acceptance.

Details of water supply and drainage system

A water supply and drainage system is a set of processes that includes collecting water, conveying , processing , and transferring it to suitable objects."" The water supply and drainage system may be classified depending on features such as: service subject, method of use, sources of water, range of supply,etc.

System of water supply and drainage

Water supply and drainage system construction methods must contain the following criteria:

  • TCVN 33: 2006 Water supply – Pipeline networks and structures – Design standards.
  • QCVN 14:2008/BTNMT Domestic sewage technical regulation on a national scale
  • TCVN 4513:1988 System internal water supply - Standards design.
  • TCVN 4519-1988 Internal drainage systems of homes and constructions - construction range and acceptance
  • TCVN 4474:1987 Internal drainage – Design standards.
  • TCVN 51: 2008 Drainage – external networks and buildings – design standards.
  • Regulations of water supply and drainage systems for homes and buildings, issued in conjunction with Decision No. 47/1999/QD-BXD on December 21, 1999.
  • TCVN 4037:2012 Water supply - Terms and Definitions
  • TCVN 4038:2012 Drainage – Terms and definitions.
  • TCVN 7957:2008 External networks and structures - Design standards

Fire protection system

The fire protection system is the solution to prevent and intervene in fire accidents. This system is made up of two main parts:

Fire prevention system: It helps in the immediate detection of fire and explosive dangers inside the observation range.

Fire suppression system: The modern system mostly includes three forms: water, foam, and gas.

Depending on the cause of the fire, the most suitable form will be used to extinguish it.

The fire protection system

To guarantee that the system works well, customers have to ensure the following specific standards:

  • The Law on Fire Prevention and Suppression was passed by the National Assembly of the Socialist Republic of Vietnam, term X, at 9th meeting on June 29, 2001.
  • TCVN 3256:1989 Fire safety -- General requirements.
  • TCVN 3255:1986 Explosion safety -- General requirements
  • TCVN 4878:2009 Fire protection - Fire classification
  • TCVN 2622:1995 Fire prevention and extinguishing for homes and constructions – Design requirements.
  • TCVN 5738:2001 – Fire alarm system with technical requirements.
  • QCVN 06:2010/BXD - National technical regulation on fire safety for homes and constructions.
  • TCVN 2622:1995 – Fire prevention and suppression for houses and constructions – design requirements.
  • TCVN 3890:2009 – Fire prevention & suppression  vehicle for homes and constructions – equip, setup, audit and maintenance.
  • TCVN 6160: 1996 – Fire prevention & suppression for landmarks – design requirements.
  • TCVN 6161:1996 - Fire prevention & suppression  for both residential and commercial buildings.
  • TCVN 7336:2003 - Fire suppression  system - Automatic sprinkler system - Requirements for design and installation