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Engineering office services

An overview of what engineering offices provide: architectural, structural, sanitary and electrical drawings, why each matters, what they contain and the requirements they must meet.

About this service

Procedure last checked: 07/2023

Architectural design

Architectural drawings play an important part in designing and constructing any building. They act as a road map that sets out every aspect of the building, from its exterior to the finest interior details. The quality of the architectural drawings is a key factor in the project's success and in achieving the desired results.

Why the architectural drawings engineering offices must provide matter

  • Visualisation and communication: architectural drawings help everyone picture the finished building and make communication easier between all the parties to the project, including the owner, the designer and the contractor.
  • Effective design: architectural drawings are used to design a building that meets users' needs effectively, taking aesthetic, functional and environmental factors into account.
  • Smooth execution: accurate, detailed architectural drawings help the construction project run smoothly and effectively, avoiding errors and delays.
  • Cost: architectural drawings help control construction costs by setting out all the materials and labour the project needs.
  • Legal compliance: architectural drawings help ensure the building complies with all the laws and regulations in force.

Quality of architectural drawings

  • Accuracy: architectural drawings must be accurate and clear, and must include all the details needed to carry out the project.
  • Integration: architectural drawings must be coordinated with all the building's other engineering drawings, such as the structural, electrical and mechanical drawings.
  • Clarity: architectural drawings must be clear and easy for contractors and workers to understand.
  • Compliance with standards: architectural drawings must comply with all the standards and regulations in force.
  • Aesthetics: architectural drawings must take aesthetic factors into account and produce a harmonious, attractive building.

Structural design

Structural drawings are essential engineering documents used to design and construct a building's supporting structure. They help ensure the building is safe and durable, and they play an important part in the various stages of construction, from design through to execution and maintenance.

Why the structural drawings engineering offices must provide matter

  • Ensuring safety: structural drawings help keep the building and its occupants safe by setting out the loads the supporting structure can bear and designing it to suit those loads.
  • Effective design: structural drawings help design an effective supporting structure that meets the building's needs and ensures its durability.
  • Smooth execution: structural drawings help the construction project run smoothly and effectively, avoiding errors and delays.
  • Maintenance and upgrades: structural drawings make it easier and more effective to maintain and upgrade the building's structure.
  • Obtaining permits: structural drawings are essential for obtaining building permits from the competent authorities.

What structural drawings contain

  • Foundation drawings: these show the type of foundations to be used for the building and how they will be constructed.
  • Column and wall drawings: these show the position of all the columns and walls in the building, their dimensions and the building materials used to construct them.
  • Roof drawings: these show the type of roofs to be used for the building and how they will be constructed.
  • Detail drawings: these show the finer construction details, such as the connections between columns and walls and how the concrete is reinforced.

Requirements for structural drawings

  • Accuracy: structural drawings must be accurate and clear, and must include all the details needed to carry out the project.
  • Compliance with standards: structural drawings must comply with all the standards and regulations in force.
  • Clarity: structural drawings must be clear and easy for contractors and workers to understand.
  • Integration: structural drawings must be coordinated with all the building's other engineering drawings.

Sanitary drawings

A building's sanitary drawings play an important part in keeping its occupants safe and healthy, and in making its drainage and water supply systems work effectively. These drawings are essential engineering documents used to set out and design all the components of the building's sanitary system, including:

  • Drainage networks: all the pipes and fittings used to carry waste water from the building to the public sewer network.
  • Water supply networks: all the pipes and fittings used to supply the building with clean water.
  • Sanitary facilities: all the sanitary fittings, such as basins, toilets and baths.
  • Ventilation systems: all the components used to ventilate the building properly.

Why sanitary drawings matter

  • Ensuring safety and health: sanitary drawings help keep the building's occupants safe and healthy by preventing the spread of infectious diseases and limiting the risks of fire and flooding.
  • Effective design: sanitary drawings help design an effective sanitary system that meets the building's needs and uses resources such as water and energy efficiently.
  • Smooth execution: sanitary drawings help the construction project run smoothly and effectively, avoiding errors and delays.
  • Maintenance and upgrades: sanitary drawings make it easier and more effective to maintain and upgrade the building's sanitary system.
  • Obtaining permits: sanitary drawings are essential for obtaining building permits from the competent authorities.

Requirements for sanitary drawings

  • Accuracy: sanitary drawings must be accurate and clear, and must include all the details needed to carry out the project.
  • Compliance with standards: sanitary drawings must comply with all the standards and regulations in force.
  • Clarity: sanitary drawings must be clear and easy for contractors and workers to understand.
  • Integration: sanitary drawings must be coordinated with all the building's other engineering drawings.

Electrical drawings

Electrical drawings are essential engineering documents used to design and install a building's electrical supply systems. They help ensure these systems are safe, efficient and effective, and they play an important part in the various stages of construction, from design through to execution and maintenance.

Why electrical drawings matter

  • Ensuring safety: electrical drawings help keep people and property safe by setting out the position of all the electrical components and how to connect them safely.
  • Effective design: electrical drawings help design an effective electrical system that meets the building's power needs and uses energy efficiently.
  • Smooth execution: electrical drawings help the construction project run smoothly and effectively, avoiding errors and delays.
  • Maintenance and upgrades: electrical drawings make it easier and more effective to maintain and upgrade the building's electrical system.
  • Obtaining permits: electrical drawings are essential for obtaining building permits from the competent authorities.

What electrical drawings contain

  • Site drawings: these show the position of all the components of the electrical system, including transformers, distribution boards, switches and sockets.
  • Circuit drawings: these show how all the components of the electrical system are connected, including wires and cables.
  • Lighting drawings: these show the position of all the light fittings, their type and how they are connected.
  • Control system drawings: these show how the electrical control systems work, such as lighting and security systems.

Requirements for electrical drawings

  • Accuracy: electrical drawings must be accurate and clear, and must include all the details needed to carry out the project.
  • Compliance with standards: electrical drawings must comply with all the standards and regulations in force.
  • Clarity: electrical drawings must be clear and easy for contractors and workers to understand.
  • Integration: electrical drawings must be coordinated with all the building's other engineering drawings.
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