Level 2 Construction and the Built Environment WJEC

This subject is broken down into 25 topics in 5 modules:

  1. Safety and Security in Construction 5 topics
  2. Sustainable Construction 5 topics
  3. Science and Materials in Construction 5 topics
  4. Construction Technology and Design 5 topics
  5. Construction and Civil Engineering Management 5 topics
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  • 5
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  • 25
    topics
  • 9,247
    words of revision content
  • 1+
    hours of audio lessons

This page was last modified on 28 September 2024.

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Construction and the Built Environment

Safety and Security in Construction

Legislation

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Legislation

What is Legislation?

  • Legislation refers to the laws or acts passed by a governing body.
  • In construction, numerous pieces of legislation exist that aim to ensure safety and security on worksites.
  • It is essential for anyone involved in construction to understand and adhere to these laws.

Common Legislation in the Construction Industry

Health and Safety at Work Act (1974)

  • This is a fundamental piece of legislation that establishes general duties for employers, employees, and others in the workplace.
  • It requires employers to ensure, so far as is reasonably practicable, the health, safety and welfare of all their employees.
  • This ranges from providing safe plants and systems, to ensuring the maintenance of safe access and exits.

Construction (Design and Management) Regulations (CDM 2015)

  • This legislation is specific to the construction industry and outlines the management of health, safety and welfare.
  • It places specific responsibilities on clients, including those who work on their behalf, such as designers and contractors.
  • Key obligations include appointing competent professionals, providing information, and ensuring adequate arrangements for managing the project.

The Management of Health and Safety at Work Regulations (1999)

  • Imposes a duty on employers to assess risks to the health and safety of their employees.
  • This includes identifying any hazards, deciding who might be harmed, and how, and evaluating risks and deciding on precautions.
  • Employers should review their assessment and update as necessary, especially if significant changes in the workplace occur.

Personal Protective Equipment at Work Regulations (1992)

  • Requires employers to provide appropriate Personal Protective Equipment (PPE) to employees who may be exposed to a risk to their health or safety while at work.
  • PPE must be properly assessed before use to ensure it is suitable, and must be maintained and stored properly.
  • Staff should also receive training on how to use PPE correctly.

Roles and Responsibilities

  • Everyone in the construction industry, from employers and supervisors to workers, has a role to play in ensuring health and safety.
  • Employers must make sure that work is planned, organised, performed, maintained, and revised as necessary so that it is carried out in a way that ensures, so far as is reasonably practicable, that it is without risk to health.
  • Employees must take reasonable care of their own health and safety and that of others who may be affected by their actions.
  • Everyone should report any situation which may pose a serious and imminent danger and they have the right to stop work in an unsafe situation.

Course material for Construction and the Built Environment, module Safety and Security in Construction, topic Legislation

Construction and the Built Environment

Science and Materials in Construction

Acoustics and sound insulation

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Acoustics and sound insulation

Acoustics in Construction

  • Acoustics refer to the properties or qualities of a room or building that determine how sound is transmitted in it.
  • The main goal in acoustic design is to manage how sound behaves in a building.
  • When designing a space, consideration must be made for both unwanted noise (noise isolation) and desired sound (like evenly distributed music in a concert hall).
  • Sound absorption refers to the process by which sound waves are absorbed and mitigated by a surface, preventing echo.
  • Soundproofing is the process of preventing the passage of sound between two spaces.
  • Knowledge of acoustics is necessary when designing spaces such as concert halls, movie theatres, libraries, schools, or office spaces.
  • Acoustic considerations may also be important in residential construction, especially in multi-dwelling units such as flats, where sound can transmit between walls and floors.

Sound Insulation Materials

  • Materials with high density and mass tend to be good at soundproofing, as they reduce the amount of noise that can pass through them.
  • Traditional construction materials such as brick and concrete have good sound insulation properties.
  • Drywall or gypsum board is a common lightweight interior material with reasonable sound insulation properties.
  • Insulating foams and fibres, such as mineral wool or acoustic foam, can absorb sound and be used in walls and ceilings to reduce noise transmission.
  • Acoustic panels made from sound-absorbing materials can be used within a room to control echo and reverberation.
  • Mass loaded vinyl (MLV) is a thin but dense material that is highly effective at reducing airborne noise.
  • Using double glazing, which involves using two panels of glass with a gap in between, can greatly reduce noise coming through windows.
  • Cavity wall construction can provide excellent sound insulation because the cavity interrupts the path of the sound waves.
  • Carpeting and soft furnishings can absorb sound within a room and reduce the level of reverberation and echo.

Measuring Sound Insulation

  • Sound insulation is measured in decibels (dB), which is a way of quantifying the loudness of sound.
  • The effectiveness of sound insulation is often expressed in terms of a sound reduction index or a single number rating system like the Sound Transmission Class (STC) rating in the United States.
  • Higher STC ratings or Sound Reduction Index values indicate better sound insulation performance.

Course material for Construction and the Built Environment, module Science and Materials in Construction, topic Acoustics and sound insulation

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