Understanding sectional drawings - archisoup | Architecture resources and guides (2023)

Of the many views in a series of architectural plans, very few come close to being a sectional drawing. Weatherblueprints of the floor, Elevations and perspectives receive more attention. Sections play an important role in telling the complete story of a building.

Without them we would not be able to see andcommunicatehow the spaces and volumes of a building connect and come together. In this article, we'll cover all the basics of drawing sections, as well as tips and resources to improve your presentation.

What is a cutout drawing?

In short, a sectional drawing is a view that represents a vertical plane cut through part of the design. These elevations are typically represented by labeled section lines and identifiers on project floor plans, which show the location of the section plane and the direction of elevation.

We provide a selection of these labels and complete example labels in our AutoCAD modelhere.

The sections can beorthographyViews where the drawing is shown parallel and in two dimensions, or perspective views with three-dimensional depth.


Understanding sectional drawings - archisoup | Architecture resources and guides (1)

No more searching for CAD blocks!

Format your drawings with the right tools.This CAD model allows you, as a designer, to focus on what is important: the design!

(Video) How to Draw a SECTION | 3D PERSPECTIVE SECTION DRAWING TUTORIAL | Architecture Drawing Tutorial

Know more...

What is your job?

Sectional drawings help you better understand the interior parts of a building and show many important elements that would not otherwise be visible in other views.

They can show intricate details in different places.Scaleenrichgraphicswith additional information and visual cues.

Customers look at the sections to see the relationship and compartments of the interiors. Consultants review sections to help with the precise design of technical components, and builders refer to sections throughout the process.buildingto ensure that everything is built as planned.

Because they are important?

A clear set of sectional drawings is essential for those involved to understand the inner workings of a building. They play a key role in connecting elevation information and exterior elevations with floor plans and interior elevations.

some of the mostsophisticated buildingsthey are best characterized today by their cuts, as their true forms are often not visible on the external facades. Complex and dynamic layered designs use creative sectional drawings to illustrate ideas for your full enjoyment.

What should a cut show?

Sections can show the relationship between floors, walls, windows, ceilings, roofs, and other elements that cross the section plane. You can also show how items like glass,Concrete, and cladding are assembled together with joints, insulation, and connection details.

An effective section is one that illustrates information that is missing from other views. For example, it can be difficult to see the thickness of the floor slab in an elevation or the voids in a floor plan, but a sectional drawing can easily show both.

Contour lines in place are also a good indication of sloping terrain, but it can be tiring to imagine the slope of a section without visual guidance.

How to read a section

Imagine a slice of cake showing the layers of frosting and filling from the bottom to the decorative elements on top. A section drawing is very similar, with the levels and stories shown in their entirety.

Regardless of whether it is a complete section of a building or a small detail of carpentry, the principle remains the same.

Understanding sectional drawings - archisoup | Architecture resources and guides (2)

In a typical section of a building, you are likely to see a combination of floors, structural elements, and architectural features. The first step in reading is to find the cut line on the floor plans. There you can use the location of the section in the building as a guide.

After analyzing the areas intersected by the section line, you can query the views to understand which elements of the external view are displayed. After that, much of the section should make sense and you'll have a fair idea of ​​the rooms and features you're looking at.

Section types and section styles

Detail -A detail drawing refers to any isolated or enlarged view of a specific part or item that shows an additional level of detail and provides more complete descriptions of the components it contains.

A details section is often used to show how the small parts are put together. These tend to be distinguished by numerous letters and labels, and a variety of line styles and hatch patterns to distinguish materials and masses.

Understanding sectional drawings - archisoup | Architecture resources and guides (3)

Complete -Full (or typical) sections have a section line that runs completely through the building or object. They are useful for getting a complete view of the interior of a structure. These sections show a complete section of a building from top to bottom to provide an overview of the building envelope and spaces in between.

Understanding sectional drawings - archisoup | Architecture resources and guides (4)

forever -A half slice, as the name suggests, is a view in which only half of the object has been sliced, while the other half is displayed as a view. This means that only a quarter of the object is removed while the rest remains intact.

(Video) Getting the Basics - Software Architecture Introduction (part 1)

When depicted on a floor plan, half sections have a section line that typically rotates 90 degrees from the center point, creating an opening that allows you to see the interior and exterior in one view.

Understanding sectional drawings - archisoup | Architecture resources and guides (5)

Side? place -Terrain sections are a way of traversing the entire terrain along with terrain and terrain elements to show the macro relationship of all structures under development. This is more suitable for complexes that include several buildings grouped together.

You will also see many sections of construction sites for projects on steep slopes or along the beach. These views provide a useful visual guide for surveying and land classification, such as: B. Excavation work and underground spaces.

Understanding sectional drawings - archisoup | Architecture resources and guides (6)

Along -A longitudinal section is cut along the longitudinal axis of a frame. It is a complete longitudinal section showing the structure in its entirety from top to bottom. Longitudinal sections are common in architectural projects as one of the main requirements for permits and works.

Understanding sectional drawings - archisoup | Architecture resources and guides (7)

Displacement -An offset cut is a cutting plane that does not intersect in a straight line. Instead, the line has many variations as it crosses the frame to include different objects in the same view. The offsets are usually perpendicular to show different depths in the section while maintaining the same plane of view.

Understanding sectional drawings - archisoup | Architecture resources and guides (8)

perspective -Perspective cuts are mainly used for presentation purposes to illustrate ideas and convey the design to the client. These section views show 3D depth beyond the section plane to show things like space, surfaces, furniture, people, and light.

Understanding sectional drawings - archisoup | Architecture resources and guides (9)

Broke -A broken section is a reference view that has one or more parts omitted to show only essential aspects of the drawing. Rather than isolating an area as a whole, split sections use breaklines to represent continuations and omissions.

This technique is ideal for detailed views to reduce the overall size without affecting the content and information of the drawing. Walls and floors are commonly divided by fault lines due to their length and continuity.

Understanding sectional drawings - archisoup | Architecture resources and guides (10)

Little bit -Poche is a sectional display style in which section components are filled, hatched, or shaded to distinguish sectioned elements from projected surfaces. In one section, poche is most commonly used for floors, walls, and beams. Different shading patterns and opacities can be used to help distinguish different materials, structural elements, and surfaces.

Understanding sectional drawings - archisoup | Architecture resources and guides (11)

in the shade -Shadow is used as a section style to create subtle light and dark gradients on the interior walls of a section. This technique can be used to more effectively explain how natural and artificial light sources illuminate the interior of a building.

Understanding sectional drawings - archisoup | Architecture resources and guides (12)

line -A line drawing consists of pure lines without color, shading, or shadows. Line breaks can make drawings easier to scale in place because bare lines are more visible than solid colors or gradient shadows. Technical design drawings are generally created as line drawings to contain as much information as possible.

Understanding sectional drawings - archisoup | Architecture resources and guides (13)

león -Bevel cuts are made by cutting non-perpendicular planes in the building or object. These cutting lines are drawn diagonally or not along the horizontal or vertical planes of the design. Bevel cuts are often used for circular or radial designs to cover areas that are not adequately represented by cross and longitudinal cuts.

How to draw a cut

There are different approaches to creating sectional drawings depending on the materials and programs you work with, but the general process remains the same. The following steps describe the basics of creating a section from scratch and apply to both manual and digital drawings.

cut cut -The first step is to decide where to make the cut. This includes the location of the section line, the direction of the view, the rooms to be sectioned, and other important elements that you want to include in the drawing. Make sure the cut line is placed evenly on all floor plans and elevations where applicable.

Reference all relevant views:Reference the affected views to create the outline of the building and prepare the drawing with the proper measurements and scales.

Draw the internal components -Add interior walls, windows, doors, ceilings, hardware, and accessories as needed. It is advisable to collate views regularly to ensure accuracy and correctness.

Add the required graphics:Once the main components are drawn, you can add hatch patterns to cut walls, dirt, gravel, wood grain, surfaces, and insulation.

Add annotations –Annotations are a fundamental part of architecture sections. This is where you add important information with tags, legends, tags, and dimensions.

Refine Presentation -Regardless of whether the section is for layout or presentation purposes, it is always important to keep it clear and concise to ensure readability. For technical drawings, this might mean cleaning up line work and adjusting fonts for optimal readability. For the presentation, this can include adding colors and other images to make it easier to understand.

Improve your drawing skills with a course:To learn more about creating sectional drawings, here are some helpful courses that will walk you through with detailed instructions and demos:

How to improve your sectional drawings

weight lines

Lineweights are different thicknesses for displaying lines. They can be used to represent distance, foreground and background, importance, and detail.

In a section, important architectural elements can be shown with thick lines, while smaller details, such as wall patterns and vegetation, can be shown with thin lines. Intermediate elements such as doors and windows can be shown with intermediate lines.

(Video) Introduction to HL7 CDA

Line weights help add hierarchy and character, and in views like detail sections, can provide clear differentiation between different parts and materials.


Textures can add a touch of realism to sectional drawings. They can be used on things like surfaces, skies, paths, grass, and materials to make the look more realistic and attractive.

Structured sections are also easier to understand as they relate directly to the material sheet without having to read finish labels or material descriptions.

Understanding sectional drawings - archisoup | Architecture resources and guides (14)

light shade

Highlights and shadows can be added to sections to add depth and contrast between spaces. They can also help convey the different atmospheres from one room to another.

Especially in designs with single openings, cross lighting and shadows can illustrate how windows, skylights, and voids bring light inside.


partsYou can bring sections to life with an entourage of people, plants, animals, and cars. These images can be used to fill in the gaps and make them more like the finished product. They can also be used to illustrate how spaces evolve in specific situations such as events, meetings, and special occasions.


The furniture in a room gives a better idea of ​​its size and scale. This can make the area more attractive and informative, and users can imagine their own furniture and lifestyle to match the design.


Perspective can be added to a section view to show depth and interiors. A perspective section can be designed, modeled, or rendered.

This type of sections is preferred for presentations as it draws more lines inwards and exposes more interior walls and ceilings, giving the impression of a truly sectioned building.

frequent questions

What is cut in the technical drawing?

Slicing is the act of opening an object to show its internal configuration. It is made to look at an object through strategic section plans that contain important information for design or manufacturing.

Imaginary slices show internal features for reference during implementation.

What is the difference between an elevation and a section?

Elevations and sections show the vertical nature of a project, but the difference is that elevations are a view of the exterior façade, while sections are a section showing the interior.

For a building to be constructed, elevation and section are needed to effectively communicate the design and structure as a whole.

Understanding sectional drawings - archisoup | Architecture resources and guides (15)

What is the difference between a section and a detail?

A section refers to any drawing that represents a vertical sectional view of an object or building, while a detail drawing shows a specific area with additional engineering levels, labels, annotations, and information.

A detail drawing can be a floor plan, elevation, section, or any other type of view as long as it shows an enlarged or more descriptive aspect of a specific part or area.

What does section AA mean?

The terms "AA cut" refer to the first cut and the view of the cut line. Represented on the drawing by an annotation (usually a circular bubble) at the end of the section line or above a drawing title box, the designation can be AA, A, A1, or other formats depending on industry standards and the business.

Section names follow an alphabetical or numerical order (BB, CC, DD, etc.) or both to indicate the next section views for that project. They are also normally correlated to the sheet number and their order of appearance on the sheet.

What is a cross section in the drawing?

A cross section is a view created by cutting the shortest side of the building. The section plane is perpendicular to a profile and is used to represent the interior of a building in the same way. For buildings, objects, and square assemblies, a cross section can mean any section cut horizontally or vertically showing the interior.

Why should I learn sectional drawing?

You may be wondering why you need to learn how to draw sections when 3D modeling and BIM programs can create sections with just a few clicks. Is knowing how to draw sections still useful and is it an efficient use of your time?

The fact is that drawing skills are a prerequisite for more complicated forms of architectural production. With a solid foundation of design principles, you can improve your overall presentation, identify missing graphic elements, annotate and render elements correctly, and create polished sections in any medium.


Understanding sectional drawings - archisoup | Architecture resources and guides (16)

No more searching for CAD blocks!

Format your drawings with the right tools.This CAD model allows you, as a designer, to focus on what is important: the design!

Know more...

(Video) Order Your Base with the MAIN BUS - Factorio 0.18 Tutorial/Guide/How-to

In sum

Architectural design is a holistic process and the interior of a building is just as important as the exterior. Sectional drawings provide a unique view of the building and provide essential information about the rooms and structure.

They can be used for persuasive presentations or detailed construction drawings and serve as a valuable addition to all kinds of projects.


How do you read a section drawing? ›

A section drawing or sectional drawing is a 2D drawing of your home as if it has been sliced in two vertically. It gives a view from inside your home - like a sideways on x-ray or an internal elevation. Sections show details about your home that might not be visible in the floor plan view.

What should be included in a section drawing? ›

The section reveals simultaneously its interior and exterior profiles, the interior space and the material, membrane or wall that separates interior from exterior, providing a view of the object that is not usually seen.

What is the purpose of sections drawings? ›

Architectural drawings use section views to reveal the interior details of walls, ceilings, floors, and other elements of the building structure. Sectional drawings are multi-view technical drawings that contain special views of a part or parts, which reveal interior features.

What are the types of section drawing? ›

There are a number of different types of sectional views that can be drawn. A few of the more common ones are: full sections, half sections, broken sections, rotated or revolved sections, removed sections, offset sections, and assembly sections.

What are the three principles of sectioning? ›

Rule 1: A section lined area is always completely bounded by a visible outline. Rule 2: The section lines in all areas should be parallel. Section lines shown in opposite directions indicate a different part. Rule 3: All the visible edges behind the cutting plane should be shown.

What are the two types of section drawings? ›

6 Types of sectional views
  • Full sections. ...
  • Half sections or views. ...
  • Offset sections or views. ...
  • Broken out sections or broken views. ...
  • Revolving sections or view. ...
  • Removed sections.
1 Jul 2020

What are the four rules of sectioning? ›

Rules of Sectioning

Rule 2: The section lines in all areas should be parallel. Section lines shown in opposite directions indicate a different part. Rule 3: All the visible edges behind the cutting plane should be shown. Rule 4: Hidden features should be omitted in all areas of a section view.

What is a section in architectural drawing? ›

What is a section? In reference to architectural drawing, the term section typically describes a cut through the body of a building, perpendicular to the horizon line. A section drawing is one that shows a vertical cut transecting, typically along a primary axis, an object or building.

How do you draw a section line in a plan? ›

You draw a section line by specifying a start point, an endpoint, a length, and a height for the section. You can specify additional points between the start point and the endpoint to create jogs in the section. The section line acts as a cutting plane, slicing a section from the building model.

What are the importance of architectural drawings? ›

Architecture drawings are important for several reasons: They help owners and project planners understand how a building will look and function when it's finished. They give necessary information and instructions so the construction crew can build the structure.

What are the different types of sections? ›

Examples of different Section Types and how to use them
  • Headline.
  • Row section.
  • Columns section.
  • Buttons section.
  • Grid section.
  • Side-by-Side section.
  • Tabs section.
  • News section.
8 Aug 2022

Why sectional view are used in drawing? ›

A section view is a view used on a drawing to show an area or hidden part of an object by cutting away or removing some of that object.

What is a full section drawing? ›

A 'section drawing', 'section' or 'sectional drawing' shows a view of a structure as though it had been sliced in half or cut along another imaginary plane.

Why do designers use sectional drawings? ›

Sectional views are an aspect of orthographic drawing. A designer can use this technique to show the interior of a design. For example, the 'magnetic force torch', shown below. This is a modern rechargeable torch and it is important for the manufacturer to be able to see the internal parts.

What are the 4 types of drawing? ›

Types of drawing
  • Caricature drawing. Caricature drawings are images that depict their subjects in oversimplified or overdramatized manners. ...
  • Cartoon drawing. ...
  • Figure drawing. ...
  • Gesture drawing. ...
  • Line drawing. ...
  • Perspective drawing. ...
  • Photorealism. ...
  • Pointillism.

What are the 6 major types of drawings? ›

Top 10 most common types of Construction drawings use regularly in construction industries.
  • Block Plan. ...
  • Architectural Drawings. ...
  • Production Drawings. ...
  • Structural Drawings. ...
  • Electrical drawings. ...
  • Plumbing Drawings. ...
  • HVAC Drawings. ...
  • Firefighting Drawings.
17 Apr 2021

What are the 3 basic categories of drawing? ›

Types of Drawing

They can be broken down into three different types: realistic, symbolic, and expressive modes of drawing.

What is the purpose of a section line? ›

A section line is used in land plotting as the means of showing a viewer the distinct property line between two separated land plots.

Which sectional view is the most common? ›

If the imaginary cutting plane passes through the entire object, splitting the drawn object in two with the interior of the object revealed, this is called a "full section." A full section is the most widely-used sectional view.

What sectioning means? ›

What does sectioning mean? If you are sectioned, this means that you are kept in hospital under the Mental Health Act 1983. There are different types of sections, each with different rules to keep you in hospital. The length of time that you can be kept in hospital depends on which section you are detained under.

What are the 5 stages of drawing? ›

The Stages of Drawing
  • 12 Months: Random Marks and Scribbles.
  • 2 Years: Controlled Scribbles.
  • 3 Years: Basic Shapes.
  • 4 Years: Patterns and 'Tadpole' People.
  • 5 Years: Pictures and Portraits.
  • 6 Years: Drawings Represent Interests and Experience.
17 Nov 2022

What objects must not be sectioned? ›

In addition to thin structural features, parts not sectioned also include standard mechanical elements such as shafts, bolts, screws, nuts, rivets, keys, pins, bearings, and gear teeth.

What is the difference between a sectional view and a detailed sectional view in a drawing? ›

When you use the section-detail view, it will create a detail view. This is a section, but the view is being placed under details, not under sections. It may not seem like a big difference, but it has to do were the plans are being stored, and what you are wanting to do with these views.

How do you draw a section in Archaeology? ›

In order to draw a section

Section drawings are done to scale. They record the vertical cross section through archaeological features/deposits. Presenting, an accurate profile of a cut feature or elevation and the relative depth.

What are the 3 important elements of architecture? ›

Writing near the end of the first century B.C.E., Roman architect Vitruvius Pollio identified three elements necessary for a well-designed building: firmitas, utilitas, and venustas.

What is the most important in architectural drawing? ›

Floor Plan (Top View)

The Floor plan is the most important architectural drawing in any of the drawings set. As a top view, it shows the arrangement of spaces or the “ parti” as a map. It demonstrates the space organizing thoughts or ideas of an architect's complete outer design.

What is the main purpose of architectural planning? ›

The primary purpose of an architectural master plan is narrowing down the style and aesthetic of the project. Since master planning involves developing a framework for the entire structure, it also defines every last detail. Typically, architects work with their team outlining the design scope of the project.

What is section in design? ›

In terms of design, the term 'section' typically refers to a view of a structure as though it has been sliced in half or cut along another imaginary plane, which is generally, but not always a vertical plane. This is represented as a 'section drawing' or 'sectional drawing'.

What is sectional plan? ›

sectional plans means the proposed plan of extension to be approved by the Surveyor- General, which is described as a sectional plan and which shows the building in the scheme as divided into two or more sections and common property and which complies with section 5 of the Sectional Titles Act, No.

How do you draw a sectioning line? ›

You draw a section line by specifying a start point, an endpoint, a length, and a height for the section. You can specify additional points between the start point and the endpoint to create jogs in the section. The section line acts as a cutting plane, slicing a section from the building model.

How do you draw a section in Autocad Architecture? ›

To Create a Section in the Current Drawing
  1. On the Quick Access toolbar, click Project Navigator.
  2. Click the Views tab.
  3. Select the view drawing in which you want to place the section callout, right-click, and click Open.
  4. On the Tool Palettes, click (Properties), and click Document.
  5. Click the Callouts palette.
16 Feb 2021

What are section lines in architecture? ›

A section is a vertical cut through a space. Sections describe the relationship between spaces and different levels. The position of the section cut line is important, as this will need to show the most useful information about the space it is cutting through.

What is a sectional drawing? ›

A 'section drawing', 'section' or 'sectional drawing' shows a view of a structure as though it had been sliced in half or cut along another imaginary plane.

What is section plan in Autocad? ›

A section represents a building model as if the model were cut vertically or horizontally to show interior detail. You can create two-dimensional (2D) or three-dimensional (3D) section objects, or a live section view of the model.

How do you plot points on shape? ›

To sketch points, select the point sketch tool from the toolbar, and then click on the location where you want the points to be laid out. Note that you are able to apply many of the same sketch constraints that you can to other sketch entities.

What are the types of section in architecture? ›

In comparison to plan types, which are distinguished by their spatial consequences, section types are usually identified by the scale of their cut: site sections, building sections, wall sections, detail sections.


1. I created the same portfolio in 3 different styles! InDesign Tutorial
(Show It Better)
2. How I draw faces || pt.1 facial structure, planes, and basic anatomy
3. 3 Ways to Design in Scale on iPad for architects
(Henry Gao)
4. How I Memorized ALL Anatomy
(Dr. Cellini)
5. Build Billionaire Swimming Pool for Jungle Residence Villa House
(Jungle Survival)
6. Learn Adobe InDesign in 9 MINUTES! | Formatting, Tools, Layout, Text Etc. | 2020 Beginner Basics
(LYH Studio)


Top Articles
Latest Posts
Article information

Author: Allyn Kozey

Last Updated: 10/10/2023

Views: 5271

Rating: 4.2 / 5 (63 voted)

Reviews: 86% of readers found this page helpful

Author information

Name: Allyn Kozey

Birthday: 1993-12-21

Address: Suite 454 40343 Larson Union, Port Melia, TX 16164

Phone: +2456904400762

Job: Investor Administrator

Hobby: Sketching, Puzzles, Pet, Mountaineering, Skydiving, Dowsing, Sports

Introduction: My name is Allyn Kozey, I am a outstanding, colorful, adventurous, encouraging, zealous, tender, helpful person who loves writing and wants to share my knowledge and understanding with you.