Drawings and Surveys
Drawings and Surveys
Embedded Files
Planning drawings and surveys are essential in the design and construction process. They provide detailed information about a site, helping designers, architects, and engineers understand the land, its features, and how a proposed building or structure will fit within it. These drawings follow specific industry standards and layouts to ensure accuracy and clear communication.
Different types of plans and surveys are used to show key details, such as location plans, site plans, and floor plans (including electrical and plumbing layers), as well as topographical, underground, drainage, and feature surveys. Each type provides vital information that helps ensure a design is safe, functional, and suitable for the chosen site.
Scale
Scale
Scale drawings enable us to represent large objects (like houses) and small objects (like screws) clearly on paper.
Scale refers to dividing or multiplying an object's dimensions by the same factor to make it fit the page.
1:1 – Full-Size2:1 – Double the Size1:2 – Half the Size
Scale refers to dividing or multiplying an object's dimensions by the same factor to make it fit the page.
1:1 – Full-Size2:1 – Double the Size1:2 – Half the Size
Three things influence the scale:
Three things influence the scale:
📄
The size of the paper
🏢
The size of the object
🔍
The amount of detail you wish to show
Location Plans
Location Plans
The location plan is the first drawing you need. It shows where the new building will go with everything else around it.
This plan helps builders figure out how to layout the new building and is required by local government officials who decide if the project can move forward.
Scale: 1:1250 or 1:2500
This plan helps builders figure out how to layout the new building and is required by local government officials who decide if the project can move forward.
Scale: 1:1250 or 1:2500
What kinds of professions use location plans?
What kinds of professions use location plans?
Architects
Conservation Bodies
Town Planners
What is shown on a location plan?
What is shown on a location plan?
- Neighbouring plots
- Plot numbers
- Pavements, roads, footpaths, railways and bridges
- Rivers, woodlands, parks and fields
- Contours show slope in the land
- Street names and plot (house) numbers
- A north-direction arrow and drawing scale
Site Plan
Site Plan
A site plan is a detailed architectural drawing that illustrates the property's location and layout, including any new buildings or structures' boundaries, shape, and positioning. This is a crucial reference for builders, enabling them to determine the construction area accurately, plan the excavation of trenches for drainage systems, and strategically place manholes for effective water management. Additionally, a site plan often includes essential details such as access points, landscaping elements, and utility connections, ensuring that all aspects of the project are clearly outlined for efficient and precise implementation.
Scale: 1:200
Scale: 1:200
What kinds of professions use location plans?
What kinds of professions use location plans?
Architects
Landscape Architects
Construction Trades
What is shown on a site plan?
What is shown on a site plan?
- Proposed building with the property boundaries
- Size and position of the building
- Position of drainage
- Landscape elements
- Gas, electrical and water supplies
- Contours show the slope in the land
- Trees (existing, proposed, and to be removed)
- North Symbol to show the direction the building is facing
- Size of the building and site to scale
Floor Plan
Floor Plan
A floor plan is a blueprint for a building. It shows what the building looks like from above. A floor plan is a sectional view, with the roof and a few layers of bricks removed to see the layout inside. A floor plan is a critical design tool that clearly and precisely represents how spaces will function together. It also includes dimensions, furniture placement, and key features, providing architects, builders, and clients with a comprehensive understanding of the building's functionality and flow before construction begins.
Scale: 1:50
Scale: 1:50
What kinds of professions use location plans?
What kinds of professions use location plans?
Construction Trades
End Users
Interior Designers
What is shown on a floor plan?
What is shown on a floor plan?
- Arrangement of rooms
- Position of windows and doors
- Internal and External walls
- Dimensions of each room
- Layout of water pipes
- Electrical sockets and switches
More detailed floor plans show the layout of kitchens and bathrooms, as these rooms have fixtures and appliances.
Electrical Layers
Electrical Layers
Electrical CAD operators produce electrical drawings to show the electrical requirements of a building or site. These drawings provide essential information, including power supply, lighting circuits, data and communication cabling, and the locations of sockets, switches, distribution boards, and any other fixed electrical systems (such as alarms, ventilation, or extractor fans). Electrical information may be presented on a floor plan, showing where each feature is positioned within the building, or as a wiring diagram, which shows the detailed connections and circuit relationships between components. To ensure clarity and consistency, electrical drawings use a standard set of symbols, allowing anyone familiar with industry conventions to read and interpret the information accurately.
Plumbing Layers
Plumbing Layers
Plumbing drawings are technical drawings that show how fresh water enters a building and how waste water leaves it. These drawings outline the layout of pipes, fixtures, appliances, vents, drains, and supply lines, helping designers and engineers understand how the plumbing system is organised within the building. Like electrical drawings, plumbing drawings make use of a standard set of symbols to ensure accuracy, consistency, and clear communication across all plans. This allows anyone reading the drawing to interpret the plumbing layout correctly and understand how the system functions.
Services Layers
Services Layers
Services layers refer to the different building systems that are included on floor plans to show how essential services are arranged throughout a structure. These layers can include things like electrical systems, plumbing, heating and ventilation (HVAC), data and communication cabling, gas supply, fire safety systems, and any other fixed building services. In CAD drawings, each service is usually placed on its own layer, allowing designers, engineers, and contractors to switch layers on or off to view information clearly without clutter. Using layers helps avoid confusion, makes coordination between different trades easier, and ensures that no services clash or overlap in ways that would cause issues on-site.
Drainage Survey
Drainage Survey
Drainage surveys identify, locate and record the condition and layout of drainage systems around a site. They provide detailed information on pipes, manholes, gullies, stormwater systems, foul water networks, and other underground features.
What is included in a drainage survey?
What is included in a drainage survey?
- Tables listing the condition, depth, size and location of drainage components
- Drawings and diagrams showing the layout and flow direction of the system
- Camera footage and images showing the internal condition of pipe networks
- Analysis of water flow, flood risk, flood plains and connections to nearby waterways
Who uses drainage surveys and why?
Who uses drainage surveys and why?
Civil Engineers
Use drainage surveys to design safe, efficient drainage systems, plan upgrades, and ensure water flow and capacity meet legal requirements. Architects
Refer to drainage surveys to position buildings correctly, avoid underground clashes, and ensure the site layout works with existing water systems. Town Planners and Conservation bodies
Use the information to assess whether a proposed development is suitable for the area, particularly in relation to flood risk, environmental impact, and planning permission. Surveyors
Carry out the surveys and provide accurate records to support design decisions and ensure compliance with building regulations. Construction Teams
Rely on drainage drawings and data to safely excavate, install or modify storm water and foul water systems during the build.
Use drainage surveys to design safe, efficient drainage systems, plan upgrades, and ensure water flow and capacity meet legal requirements. Architects
Refer to drainage surveys to position buildings correctly, avoid underground clashes, and ensure the site layout works with existing water systems. Town Planners and Conservation bodies
Use the information to assess whether a proposed development is suitable for the area, particularly in relation to flood risk, environmental impact, and planning permission. Surveyors
Carry out the surveys and provide accurate records to support design decisions and ensure compliance with building regulations. Construction Teams
Rely on drainage drawings and data to safely excavate, install or modify storm water and foul water systems during the build.
Feature Survey
Feature Survey
Feature surveys record the existing features on a site, neighbouring properties and the surrounding street. They provide detailed information needed when modifying or developing land or buildings.
What is included in a feature survey?
What is included in a feature survey?
- Existing buildings and structures
- Boundary features such as fences and walls
- Utility services (gas, electricity, water)
- Drains and manholes
- Trees, vegetation and natural features
- Hard landscaping such as paving, steps, paths, seating and lighting
Who uses feature surveys and why?
Who uses feature surveys and why?
Architects
Use feature surveys to plan building placement, ensure designs fit the surroundings, and take existing structures, access routes and natural features into account.Landscape Architects
Rely on feature surveys to design outdoor spaces, working with existing paving, planting, lighting and land features.Civil Engineers
Use the survey to understand site constraints, plan drainage, assess utility connections and coordinate engineering solutions.Town Planners
Refer to feature surveys when reviewing planning applications to check that developments respect boundaries, services, access and environmental features.Construction Teams
Use the information to prepare the site, avoid damaging utilities or trees, and ensure work is carried out in the correct locations.Surveyors
Create feature surveys to record accurate, up-to-date information for safe and compliant design and construction.
Use feature surveys to plan building placement, ensure designs fit the surroundings, and take existing structures, access routes and natural features into account.Landscape Architects
Rely on feature surveys to design outdoor spaces, working with existing paving, planting, lighting and land features.Civil Engineers
Use the survey to understand site constraints, plan drainage, assess utility connections and coordinate engineering solutions.Town Planners
Refer to feature surveys when reviewing planning applications to check that developments respect boundaries, services, access and environmental features.Construction Teams
Use the information to prepare the site, avoid damaging utilities or trees, and ensure work is carried out in the correct locations.Surveyors
Create feature surveys to record accurate, up-to-date information for safe and compliant design and construction.
Topographical Survey
Topographical Survey
A topographical survey is a detailed mapping survey that records the shape and layout of the land. It includes measurements of ground levels and the position of both natural and man-made features. Surveyors use specialist tools such as GPS, total stations, and laser scanners to collect accurate data about the site.
What is included in a topographical survey?
What is included in a topographical survey?
A topographical survey provides information on:
- Contours/land levels – rises, slopes and changes in height
- Natural features – trees, rocks, embankments, hills, waterways
- Man-made features – buildings, walls, fences, paths, poles, boundaries
- Ground shape – how the land is formed and where elevations or dips occur
- Positions and heights of essential objects on the site
Who uses topographical surveys and why?
Who uses topographical surveys and why?
Civil Engineers
Rely on the survey to plan foundations, drainage, road layouts, retaining walls and earthworks based on accurate ground conditions. Landscape Architects
Use the information to design outdoor spaces that work with slopes, natural contours and existing land features. Town Planners and Conservation bodies
Check topographical surveys when reviewing planning proposals to assess issues like flood risk, suitability of the land and the impact on the environment.Construction Teams
Use the data when preparing the site, managing excavation, setting building levels and ensuring accurate positioning of structures.Surveyors
Carry out the survey and supply accurate data needed to start the design and construction process.
Rely on the survey to plan foundations, drainage, road layouts, retaining walls and earthworks based on accurate ground conditions. Landscape Architects
Use the information to design outdoor spaces that work with slopes, natural contours and existing land features. Town Planners and Conservation bodies
Check topographical surveys when reviewing planning proposals to assess issues like flood risk, suitability of the land and the impact on the environment.Construction Teams
Use the data when preparing the site, managing excavation, setting building levels and ensuring accurate positioning of structures.Surveyors
Carry out the survey and supply accurate data needed to start the design and construction process.
Underground Survey
Underground Survey
Underground surveys are carried out to provide a clear understanding of what lies beneath the surface of a site. They help identify buried services, utilities, hazards, and ground conditions, all of which are essential for safe and accurate planning in construction and civil engineering projects.
What is included in a underground survey?
What is included in a underground survey?
- Buried utilities and services (gas, electricity, water, telecommunications)
- Geology and soil composition
- Depth and type of bedrock
- Previous land use (e.g. industrial use, landfill, contaminated ground)
- Water table level
- Mining reports showing past excavations, mine shafts or unstable ground
Who uses underground surveys and why?
Who uses underground surveys and why?
Civil Engineers
Use the data to design foundations, drainage, and groundworks safely, ensuring structures are built on reliable and stable ground.Architects
Check underground conditions to decide on building placement and to avoid clashes with buried utilities.Town Planners
Consider the survey results when assessing planning applications, especially where land stability or contamination may be an issue.Construction Teams
Use underground survey information to avoid damaging utilities, prevent accidents, and plan safe excavation.Conservation bodies Assess previous land use, contamination risks and water table levels to ensure environmental safety.Surveyors
Conduct underground surveys to provide accurate and essential information for early design and planning stages.
Use the data to design foundations, drainage, and groundworks safely, ensuring structures are built on reliable and stable ground.Architects
Check underground conditions to decide on building placement and to avoid clashes with buried utilities.Town Planners
Consider the survey results when assessing planning applications, especially where land stability or contamination may be an issue.Construction Teams
Use underground survey information to avoid damaging utilities, prevent accidents, and plan safe excavation.Conservation bodies Assess previous land use, contamination risks and water table levels to ensure environmental safety.Surveyors
Conduct underground surveys to provide accurate and essential information for early design and planning stages.
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