Matheus Pereira

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Back to Basics: Natural Ventilation and its Use in Different Contexts

Automation is everywhere around us - our homes, furniture, offices, cars, and even our clothing; we have become so accustomed to being surrounded by automated systems that we have forgotten what life was like without them. And while automation has noticeably improved the quality of interior spaces with solutions like purified air and temperature control, nothing compares to the natural cool breeze of mother nature.

But just like everything else in architecture, there is no one size fits all; what works in Tanzania cannot work in Switzerland or Colombia. This is due to several reasons, such as the difference in wind direction, average temperature, spatial needs, and environmental restrictions (or lack thereof). In this article, we take a look at natural ventilation in all its forms, and how architects have employed this passive solution in different contexts. 

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Architecture Classics: Crematorium at Vila Alpina / Ivone Macedo Arantes

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The Jayme Augusto Lopes Crematorium, popularly known as Crematorium of Vila Alpina, is located in Jardim Avelino, on the east side of the city of São Paulo. It was designed by architect Ivone Macedo Arantes - at the time an employee of the Cemetery Department of the City of São Paulo - and was inaugurated in 1974. It is considered to be the first crematorium in Brazil and Latin America and one of the largest in the world.

Cross Ventilation, the Chimney Effect and Other Concepts of Natural Ventilation

Cross Ventilation, the Chimney Effect and Other Concepts of Natural Ventilation - Sustainability
Sarah Kubitschek Hospital Salvador / João Filgueiras Lima. Image © Nelson Kon

Nothing is more rational than using the wind, a natural, free, renewable and healthy resource, to improve the thermal comfort of our projects. The awareness of the finiteness of the resources and the demand for the reduction in the energy consumption has removed air-conditioning systems as the protagonist of any project. Architects and engineers are turning to this more passive system to improve thermal comfort. It is evident that there are extreme climates in which there is no escape, or else the use of artificial systems, but in a large part of the terrestrial surface it is possible to provide a pleasant flow of air through the environments by means of passive systems, especially if the actions are considered during the project stage.

This is a highly complex theme, but we have approached some of the concepts exemplifying them with built projects. A series of ventilation systems can help in the projects: natural cross ventilation, natural induced ventilation, chimney effect and evaporative cooling, which combined with the correct use of constructive elements allows improvement in thermal comfort and decrease in energy consumption.

How to Minimize Harmful Effects of Formaldehyde Gas Indoors

As people are spending more and more time inside their homes, offices, and other closed areas, it is important to ensure that these spaces are safe and healthy environments, especially indoor areas designed for children and seniors. In recent years, several of the materials that shape the spaces we inhabit and directly influence the quality of the air we breathe have increasingly used a potentially dangerous chemical compound. This compound is called formaldehyde.

Factors that Transform a Workplace into a Happy Place

It is truly odd how we always find ourselves in a bad mood at work and our productivity keeps decreasing as the week passes by. To be fair, we can’t keep blaming our colleagues, clients, or Monday for our rough day; sometimes it’s the chair we are sitting on, the fluorescent lighting above our computer, or the constant “chugging” sound of the printer near the desk.

Other than the fact that people spend about 70-80% of their time indoors, almost 9 hours of their day are being spent at work; and studies have indicated that the environmental quality of an office has short and long term effects on the comfort, health, and productivity of the people occupying it. While research on the comfort conditions of workplaces is still relatively minimal, we have put together a list of factors that have proved to be highly influential on the comfort of individuals in workplaces.

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How Artificial Lighting can Improve (or Worsen) Architecture

Of the varying aspects of architectural and interior design, lighting is one element that can visually enhance or destroy a space. This influence stems from the wide range of artificial lighting designed for the most widely differing tasks, environments, and purposes, including internal and even external spaces such as facades and landscape projects. Think of two environments with the same dimensions and layout. Suppose that in the first, only one point of light was applied - a general, unspecified point of light in this case - while in the second a light project was performed considering the use of space and valuing certain aspects of the architectural design. Undoubtedly, the second option is a more pleasant space. In the same way, poor lighting design can ruin an environment. But how is it possible to achieve these different results?

In a previous article, we already showed how to calculate the correct light intensity required for each environment. Here, we compile a list of some of the key types of lighting systems.

What Do The Cracks in Concrete Structures Mean?

Cracks, which could be classified according to their thickness as fissures or fractures, are serious problems in the construction industry that can negatively affect aesthetics, durability and, most importantly, the structural characteristics of a project. They can happen anywhere, but occur especially in walls, beams, columns, and slabs, and usually, are caused by strains not considered in the design.

Infographic: The Evolution of Glass

Glass is so present in our lives that it’s very difficult to think about the amount of work, experimentation and technologies behind each panel or glass object. It’s also impossible to separate innovations from modern architectural projects –from architects such as Mies Van der Rohe and Le Corbusier– from the advances of the glass industry.

We’re following the history of glass, from Mesopotamian artifacts to technological glasses, and we invite you to travel with us.

Key Elements of Landscape Design: Spatial Planning and Tree Layouts

Just like the architectural elements that make up built space - floor, walls and ceilings - natural elements are also capable of creating spaces in large-, medium- and small-scale areas, in places like public and residential gardens.

According to Brazilian landscape architect Benedito Abbud, "Landscaping is the only artistic expression in which the five senses of the human being participate. While architecture, painting, sculpture and other visual arts use and abuse only the vision, landscaping also involves smell, hearing, taste and touch, providing a rich sensory experience by adding the most diverse and complete perceptual experiences. The more a garden can sharpen all the senses, the better it fulfills its role. " [1]

Below we list some of the key elements of landscape planning and design. See the principles and learn why you should never randomize the placement trees!

How Inverted King Post Trusses Allow for Large, Elegant Open Spaces

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SEBRAE Headquarters / gruposp + Luciano Margotto. Image © Nelson Kon

Inverted king post trusses are made of steel bars and cables used to reduce bending, deformation, and a trusses’ height. In other words, they are a collection of continuous beams (steel or wood) and steel cables that are positioned under the beam, supported by an upright king post. Although slender, they are suited for large spans and have small sections.

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Systems to Incorporate Natural Lighting in Your Projects

There is nothing more rational than taking advantage of natural lighting as a guarantee to improve the spatial quality of buildings, as well as saving energy. The awareness of the finitude of natural resources and the demands for reducing energy consumption has increasingly diminished the prominence of artificial lighting systems, forcing architects to seek more efficient design solutions. With this goal in mind, different operations have been adopted to capture natural light.

These systems can also guarantee excellent spatial properties if projected correctly. Below we have gathered five essential systems for zenithal lighting.

Steel Frame and Timber Frame: The Benefits of Dry Construction Systems

You have to consider many factors when designing an architectural project in order to ensure quality and value. The construction technique is in most cases the first item to be evaluated, because it is the one factor that properly materializes the proposed design and determines the efficiency of the project in terms of time, costs, labor, finishes and final quality.

Tensile Structures: How Do They Work and What Are the Different Types?

Historically inspired by some of the first man-made shelters—such as the black tents first developed using camel leather by the nomads of the Sahara Desert, Saudi Arabia, and Iran, as well as the structures used by Native American tribes—tensile structures offer a range of positive benefits compared to other structural models.

Tensile structure is the term usually used to refer to the construction of roofs using a membrane held in place on steel cables. Their main characteristics are the way in which they work under stress tensile, their ease of pre-fabrication, their ability to cover large spans, and their malleability. This structural system calls for a small amount of material thanks to the use of thin canvases, which when stretched using steel cables, create surfaces capable of overcoming the forces imposed upon them.

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