5 Enduring Building Materials for Lasting Structures

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Around 10,000 years ago, humans began making significant changes to their way of life. Gradually transitioning away from a nomadic existence, they began staying in one place for longer durations. This shift was likely due to the end of the last ice age, which led to more abundant resources. Humans no longer needed to travel great distances to find food, so they settled where resources were plentiful. As time passed, this more stationary lifestyle brought new challenges. Instead of seeking caves or constructing temporary shelters from animal skins for weather protection, humans sought out more durable materials to build lasting homes [source: Castleden].

Throughout history, humans have used a diverse range of materials, which reflect our ongoing pursuit to create enduring structures that address our evolving needs. The progression of architecture confronts these challenges, shaping cultural expectations of how buildings should appear and function.

In the following pages, we'll explore five materials that humans have depended on to construct homes, halls, temples, and various other types of buildings. These materials are still in use today, and understanding them will help us trace the journey from simple mud huts and tents to towering skyscrapers capable of sheltering thousands.

First, let's examine the highly versatile building material that both humans and termites have relied on for centuries: wood.

5. Wood

Wood is an excellent construction material with many advantages. It can serve as the primary material, as seen in log cabin construction, or it can be combined with other materials to act as a decorative feature or support structure. Compared to stone, wood is lightweight, and once it has been properly seasoned to remove moisture, it becomes quite strong. Additionally, wood can be easily cut to the desired length.

Wood does have some drawbacks. It eventually deteriorates and is susceptible to moisture-related issues like dry rot, as well as attacks by pests such as termites. Fire also poses a significant risk.

Despite these weaknesses, wooden buildings can endure for an impressively long time. The oldest wooden structure still standing today is the Horyu-ji temple in Japan, which was constructed in the 8th century [source: CWC].

Next, let’s explore how working with mud can be an effective approach when crafting bricks.

4. Brick

Typically made from clay, brick has been a key material in numerous ancient landmarks, such as the Roman aqueducts, the Pantheon, and the Great Wall of China. The Sumerians were the first to craft bricks, and it’s believed that their earliest bricks were rough, uneven, sun-dried blocks likely formed from silt deposited after floods [source: Britannica].

The silt would dry into a solid form and was then extracted, broken into pieces, and used to construct the walls of huts and other buildings. Over time, molds were developed to produce uniform bricks that could be easily stacked to form smooth walls with precise corners.

This method of brickmaking is still in practice today and works particularly well in arid regions. However, excessive rainfall can undo all the hard work, turning those sturdy walls back into mud. The solution is firing the bricks in high heat, making them strong, weather-resistant, fireproof, easy to produce, and simple to work with.

Next, we’ll explore another ancient building material: stone.

3. Stone

Stone is a remarkable material known for its durability, though it presents challenges in quarrying and transportation, and has limitations when it comes to tension and stress. When resources are available for precise excavation and cutting, stone becomes an incredibly strong and valuable natural material. Unlike brick, it can be stacked without mortar, bearing heavy vertical loads. Stone resists deformation, stands up well to the elements, endures fire, and helps maintain stable interior conditions. With so many remarkable stone structures, it's unfortunate that modern construction often uses stone more for decorative purposes than as a building material itself.

In today's construction, more cost-effective and efficient materials have taken the place of stone, including decorative stone veneers. It might seem surprising, but steel, wood, and concrete constructions often feature just a thin layer of decorative stone to meet modern budgets and standards. Newer synthetic materials even replicate the appearance of stone in lighter, cheaper versions, making the use of veneers unnecessary.

Stone remains popular for its aesthetic appeal, and it’s unlikely to ever be completely phased out. From the earliest Stone Age, when early humans used rocks to weigh down their tent flaps, stone has been part of human design. As a decorative element, it’s sure to remain in our architecture for many years to come.

Next, we turn to another essential building material: concrete.

Concrete is a composite material made from a blend of aggregates such as stones and sand, mixed with a binding agent like cement and water. Once combined, the mixture is allowed to set, harden, and solidify. This versatile material can be shaped directly on-site or poured into molds, where it cures and can later be transported.

Although concrete has existed for centuries, it was only in 1860 that its full potential was recognized. That year, it was discovered that reinforcing concrete could significantly improve its tensile strength—the amount of force it could endure—leading to its widespread adoption.

Reinforced concrete can be molded into various shapes by incorporating steel rods, known as rebar, into the concrete while it’s being poured. This reinforcement makes concrete ideal for applications such as walls, beams, slabs, foundations, and frames. The combination of relatively low-cost concrete and metal reinforcements creates a material that is flexible, durable, and cost-efficient.

Advancements in the 20th century have enhanced the role of reinforced concrete in modern construction. Pre-cast concrete, manufactured under controlled conditions, offers improved water resistance and reduced expansion and contraction. Pre-stressed concrete, created by embedding stretched steel strands within the material as it hardens, further boosts its tensile strength and ability to resist downward forces.

Now, let’s move on to explore how steel is not just used for reinforcing concrete but also plays a significant role in modern construction techniques.

1. Iron and Steel

As humanity began to build vertically instead of horizontally, the need for stronger materials to support taller structures became clear. Tall buildings put significant pressure on their load-bearing walls, so a sturdy framework was required to distribute that weight effectively.

Here, we see that steel serves a dual purpose in construction. It can either be incorporated into concrete for added support or serve as a standalone foundation. Steel is easy to prefab, making installation quick and simple. It can be welded, bolted, or riveted into place and is highly recyclable, which aligns with modern green building practices. Steel's affordability has made it a common choice for commercial buildings, and it's beginning to be used more in residential construction as well.

The development of steel technology, which enables the design and construction of taller buildings, has revolutionized architecture and opened up new possibilities for creative solutions to construction challenges.

On the following page, you'll find a wealth of additional information regarding building practices and architectural concepts.