La sección como relato. The section drawing is the document that reveals what a building actually does with space, light, and structure. A floor plan shows you the footprint of rooms. The section tells you the story of how those rooms live — how high the ceiling rises, where light descends from, how a staircase threads between levels, where structure is exposed and where it disappears.
At MÉTODO, the section is not a technical output generated at the end of design. It is a design tool used from the beginning, because the questions it answers cannot wait.
What the Section Actually Shows
A section drawing is a vertical cut through the building. Imagine slicing a house with a plane — removing one half and looking at the exposed interior from the side. You see:
- The floor-to-ceiling height at every level and in every room
- How the roof meets the top of the wall, and what that creates in terms of light
- Where structure appears as a material element in space
- How a staircase rises and what volumes it passes through
- How a light well, atrium, or double-height space connects floors
None of this is readable in a floor plan. A floor plan at the second level shows rooms with walls and doors. It cannot show you that the ceiling of the living room below continues as the floor of a mezzanine, or that a slot in the roof draws light down a full story to the ground floor.
The section is where vertical intentions become legible.
The Section as a Design Decision, Not a Documentation Step
In conventional practice, sections are often generated late — during construction documentation, once the spatial decisions have been made in plan and elevation. This sequence produces sections that document a design already resolved elsewhere. The result is often a building with coherent floor plans and arbitrary vertical relationships.
Our process inverts this. Section studies begin in schematic design, when the massing is still fluid. The section is the tool we use to ask: how does the light get in? Where does the space expand and compress? What is the spatial experience of moving from arrival to the main living area?
The process before the style. Answering those questions in section, at the earliest stage, shapes decisions that a plan cannot capture.
Light in Section
A south-facing window placed at eye level provides horizontal light that illuminates the floor and lower walls. The same south facade with a clerestory above provides light that rakes the ceiling and upper walls, creating a completely different atmospheric quality. A skylight in plan is a small circle or rectangle. In section, it is a cone of light descending at a specific angle, hitting a specific surface at a specific hour of the day.
Daylighting strategy is section strategy. The geometry of light entry — the angle, the surface it strikes first, the depth it travels — is determined by decisions visible only in the section: window head height, ceiling slope, the depth of reveals, the placement of interior walls that might intercept or redirect light.
When we work on a Colorado project, we overlay sun angle geometry directly onto the section drawing. The winter solstice sun angle at Denver's latitude enters the section as a line. We can see immediately whether it reaches the back wall of a room, whether the overhang blocks it, and where it falls on the floor at two in the afternoon on the shortest day of the year.
Structure and Material in Section
The section also reveals the structural logic of a building. Where beams span, how load transfers from roof to foundation, where a column appears in space — these are facts about the building that the section exposes in their true relationship to the rooms they inhabit.
In our work with stone, concrete, and timber, the section is where we decide which structural elements will be visible and how they will relate to the light entering the space. A concrete beam that appears in the section as a horizontal element at ceiling height defines a zone below it. A timber post that rises through a double-height space becomes a vertical marker in the section narrative.
The sombra antes que la luz. Shadow is as much a material of the section as stone or wood. Where structure casts shadow, where deep reveals create contrast, where a solid wall turns at a corner — these are conditions designed in section.
Reading the Section with Clients
One of the most useful moments in our design process is the section review with clients. We present the section alongside a simple physical model or a digital perspective from inside the cut, so the client can orient themselves within the drawing. Once they understand that they are standing inside the building looking at its exposed interior, the section becomes readable.
Clients regularly identify spatial issues in section review that they did not notice in plan review. A ceiling that felt abstract as a height dimension becomes visceral when seen as a relationship to the room's width. A light well that appeared on the plan as a gap between rooms becomes, in section, a full-height vertical space that connects two floors with light.
Next Steps
The section drawing is not a technical formality — it is the primary instrument for designing the quality of a space. If you are evaluating a design proposal and the section studies are not part of the presentation, ask for them. They will tell you more about what the building will feel like than any rendered image.
Learn how MÉTODO builds section-driven design into every project stage at the core of our process.