The section as relato — the section as story — is the organizing idea behind how we make design decisions in MÉTODO. A plan tells you where rooms are. A section tells you how a building feels: ceiling height at the entrance, the compression before an open living space, the angle of afternoon light across a concrete wall. Those are not decoration. They are sequence.
What a Section Reveals That a Plan Cannot
A floor plan is a horizontal cut. It answers: what is next to what? A section is a vertical cut. It answers: what is above what, and what does that produce?
In a section you can read:
- The relationship between floor height and window head height, which determines how deep light travels into a room
- The compression of a low corridor before a tall living space — which makes the tall space feel taller
- The structural logic: where loads transfer, where voids open without support, where a cantilevered roof creates shade without a column
- The thermal stack: how warm air rises and exits, how cool air enters at low points
These are not technical minutiae. They are the primary ingredients of spatial experience. A room can have beautiful materials and poor section — it will feel wrong and the client will not know why.
The Section as Decision Tool
In MÉTODO, we draw sections before plans are resolved. This is a deliberate sequence. Plan layout is flexible — rooms can shift laterally. Section geometry is structural. If you fix a flat roof and then decide you want clerestory light above the kitchen, you are changing the structure, the ceiling, and the roofline simultaneously.
We use what we call the matriz de opciones — a comparison of alternatives — applied to section decisions. For a single residence, typical section alternatives might include:
| Option | Roof Form | Ceiling at Living | Light Entry |
|---|---|---|---|
| A | Flat + clerestory | 3.8 m with high side window | North clerestory, indirect |
| B | Mono-slope toward patio | 2.4 m rising to 4.2 m | South glazing, direct winter sun |
| C | Dual pitch | Consistent 3.2 m | East and west ends, controlled |
Each option has thermal consequences, structural costs, and spatial character. Presenting these as a table or as paired section drawings means the client decides by comparing, not by reacting to a single image that was pre-selected for them.
Light Enters Through the Section
Asoleamiento — the study of sun movement across a site and building — is a section problem, not a plan problem. The plan shows where windows are. The section shows what angle light arrives at, how far it penetrates, and at what time of day.
A south-facing window at floor level reads differently in section from a south-facing clerestory. The floor window brings morning light low across the floor. The clerestory brings afternoon light deep into the interior, reaching the north wall. Both are south-facing. Their spatial effects are opposite.
For climate-responsive design, the section controls solar gain in winter and shading in summer by resolving roof overhang depth against the sun's altitude angle. This calculation belongs on the section drawing. It cannot be done in plan.
The Relationship Between Section and Structure
Structure is a section conversation. Columns, beams, walls, and slabs all exist in vertical relationships that the plan only hints at. A cantilevered roof appears in plan as a line. In section, it reveals span, depth, and the transfer of load to the wall below.
When we evaluate structural options in schematic design, we do it in section. Concrete frame versus steel moment frame versus load-bearing stone wall: each option changes the section geometry, the ceiling thickness, and the visual character of interior surfaces.
This is why the section arrives before the structure is specified. If you specify structure first and then try to draw the section you want, you will be working against what you have already decided.
Reading a Section With a Client
Most clients have never been taught to read a section drawing. In MÉTODO, we spend time in early meetings teaching this skill — not because clients should become architects, but because section literacy allows them to make real decisions.
We use two techniques:
First, we annotate the section with the human figure at eye level. Scale becomes legible. A 3.5 meter ceiling is abstract; the figure standing beneath it is not.
Second, we draw the sun path onto the section. We mark where light enters at 10 in the morning on the winter solstice, and where the same window provides shade in July. The client can then evaluate whether the proposed geometry serves how they actually use the space.
The section is not a drawing architects make to explain their decisions. It is the drawing where decisions are made.
Próximos pasos
Understanding how a section works is the first step toward understanding whether your architect is resolving the right problems before construction begins. If early design meetings are focused exclusively on floor plans and renderings, key decisions may be left to the construction phase — when reversing them is expensive.
Conoce el método de MÉTODO to learn how we structure the design process from site analysis through construction documentation.