making engineering simple https://allthingsengineered.com My WordPress Blog Thu, 07 Dec 2023 03:14:01 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.2 https://allthingsengineered.com/wp-content/uploads/2023/05/LogoMakr-3Xdxlx-150x150.png making engineering simple https://allthingsengineered.com 32 32 Professional Development Tips for Civil Engineering Students https://allthingsengineered.com/professional-development-tips-for-civil-engineering-students/?utm_source=rss&utm_medium=rss&utm_campaign=professional-development-tips-for-civil-engineering-students https://allthingsengineered.com/professional-development-tips-for-civil-engineering-students/#respond Thu, 07 Dec 2023 03:14:00 +0000 https://allthingsengineered.com/?p=956 Embarking on a journey in civil engineering is akin to stepping onto a dynamic and ever-evolving construction site. The terrain may be challenging but the rewards are substantial. As a civil engineering student, the significance of continuous professional development cannot be overstated. In this blog post, I will explore the importance of ongoing learning and …

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Embarking on a journey in civil engineering is akin to stepping onto a dynamic and ever-evolving construction site. The terrain may be challenging but the rewards are substantial. As a civil engineering student, the significance of continuous professional development cannot be overstated. In this blog post, I will explore the importance of ongoing learning and offer valuable tips to help you chart your course toward success in the field.

1. Embrace a Lifelong Learning Mindset

In the fast-paced world of civil engineering, the learning curve doesn’t end when you get your diploma. Technology, materials and methodologies evolve and staying relevant requires a commitment to continuous learning. Make it a habit to seek out new information whether through industry publications, online course or attending conferences.

2. Networking: Your Professional Superpower

Building a robust professional network is key to opening doors in the civil engineering industry. Attend industry events, join professional organizations and connect with experienced engineers. Networking not only exposes you to diverse perspectives but also provides invaluable mentorship opportunities that can guide your career trajectory.

3. Stay Informed About Industry Trends

The landscape of civil engineering is constantly shifting with emerging technologies and new trends. Stay ahead of the curve by keeping yourself informed about the latest developments in sustainable construction, smart infrastructure and innovative materials. Subscribing to industry publications and participating in webinars can be effective ways to stay informed.

4. Develop Soft Skills:

While technical proficiency is vital, don’t underestimate the power of soft skills. Effective communication, teamwork plus leadership are essential in the collaborative world of civil engineering. Hone your ability to convey complex ideas clearly as this is the only way to bring in others into your ideas, collaborate with diverse teams and remember to always lead with empathy.

5. Pursue Internships and Co-op Opportunities:

Real-world experience is an invaluable teacher. Seek internships and co-op opportunities to gain hands-on experience in the field. This not only enhances your technical skills but also exposes you to the practical aspects of project management, client interactions and on-site problem-solving. Personally in my first year I went in as a laborer and window cleaner for the summer to get my first dose of experience.

6. Invest in Certifications

Certifications can be a powerful addition to your resume demonstrating specialized expertise in a particular area of civil engineering. Explore certifications relevant to your interests, such as LEED certification for sustainable design or project management certifications for those aspiring to lead projects. Take other certificates in emerging new technologies and trends as this will keep you as an invaluable member to any team you work with.

7. Set Clear Career Goals

Having a roadmap for your career can provide direction and motivation. Set short-term and long-term goals whether it’s obtaining a specific certification, leading a project or even reaching a managerial position. Regularly reassess and adjust your goals based on your evolving interests and the demands of the industry.

8. Seek Feedback and Learn from Mistakes:

Constructive feedback is a valuable tool for personal and professional growth. Embrace feedback, learn from your mistakes without getting defensive and view challenges as opportunities to refine your skills. The ability to adapt and learn from setbacks is a hallmark of successful engineers or any other professionals for that matter.

In conclusion, the path to success in civil engineering is marked by a commitment to continuous learning, building a strong network and developing a diverse skill set. Embrace the ever-evolving nature of the field and remember that your journey is as important as your destination. By adopting a proactive approach to professional development, you’ll not only thrive in your career but also contribute to the advancement of the dynamic world of civil engineering.

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THE MODERN SOIL STABILIZATION LANDSCAPE https://allthingsengineered.com/the-modern-soil-stabilization-landscape/?utm_source=rss&utm_medium=rss&utm_campaign=the-modern-soil-stabilization-landscape https://allthingsengineered.com/the-modern-soil-stabilization-landscape/#respond Wed, 11 Oct 2023 13:44:24 +0000 https://allthingsengineered.com/?p=939 Soil stabilization is an indispensable step in many construction projects ensuring a solid foundation for structures to stand the test of time. Over the years, a myriad of stabilization methods have emerged each tailored to specific soil conditions and project requirements. As the civil engineering domain evolves, blending traditional and contemporary soil stabilization techniques offers …

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Soil stabilization is an indispensable step in many construction projects ensuring a solid foundation for structures to stand the test of time. Over the years, a myriad of stabilization methods have emerged each tailored to specific soil conditions and project requirements. As the civil engineering domain evolves, blending traditional and contemporary soil stabilization techniques offers a promising route to innovative and sustainable construction solutions.

IN-SITU STABILIZATION

In-situ stabilization champions on-site soil improvement by injecting stabilizing agents like cement and lime directly into the soil without relocating it. This method is pivotal for both deep and shallow foundations as well as contaminated sites. Design mix planning is crucial to ascertain the engineering properties of stabilized soil ensuring it meets the stability and settlement analyses criteria essential for the supported structure (Keller Inc.).

A notable offshoot of in-situ stabilization is the Deep Mixing Method which delves into larger depth soil stabilization. It entails injecting a wet or dry binder into the ground and blending it with in-situ soft soils using mechanical or rotary mixing tools. The resultant stabilized soil mass harmonizes with the natural soil facilitating effective load distribution between them (EuroSoilStab, 2002). This technique is adaptable with different patterns like single, block, panel or stabilized grid patterns depending on the application. This in turn ensures a cohesive interaction between the stabilized and natural soil masses.

EX-SITU STABILIZATION

In comparison, ex-situ stabilization requires the relocation of soils from their original position to another place for amendment often seen in dredging operations within river channels and ports. This method aims at either amending contaminated sediments to reduce toxicity or maintaining navigational channels for vessels (US EPA, 2004). Offsite sediment treatment occurs in Confined Disposal Facilities (CDF) after which it can be used or disposed at designated sites. Planning for ex-situ stabilization entails considerations like removal methods, transportation means, treatment location availability and disposal or reuse demands (Miller and Miller, 2007; PIANC, 2009)​.

Ex-situ stabilization showcases a structured approach, catering to different geotechnical challenges. Treatment methods within CDF can vary based on sediment nature and water content, offering a comprehensive solution for soil stabilization challenges.

POLYMERS, ELECTROKINETICS AND GEOSYNTHETICS

The transition from traditional methods has seen the rise of innovative techniques like the use of polymers, electrokinetic stabilization and the application of geosynthetics. These modern methods address a range of soil stabilization needs from enhancing shear strength to controlling erosion and improving drainage.

BIOLOGICAL SOIL STABILIZATION

Biological soil stabilization involves employing microorganisms and vegetation even though the latter is more popular. Vegetation will significantly decrease soil erosion increasing the stability of the soil. This is also partly because root traits like their architectural and morphological qualities will play an important role in both the physical and chemical properties of soil. It also fosters local ecosystems embodying a harmonious blend of engineering and nature.

NANOTECHNOLOGY AND BEYOND

The infusion of nanotechnology with traditional stabilization materials opens new avenues. By manipulating soil properties at a microscopic level, it augments the load-bearing capacity of the soil by increasing the geotechnical properties of the soil heralding a new era of robust and resilient structures. It has been proven that adding just 1% of nano soil will double the compressive strength of natural soil and increase the liquidity and plasticity further improving the geotechnical properties

Soil stabilization with its broad spectrum of methods, epitomizes the dynamic and evolving landscape of civil engineering. As research advances and technologies burgeon, the domain is set to unveil novel, efficient and sustainable soil stabilization methodologies. This narrative underscores the value of both time-tested techniques and modern innovations each playing a pivotal role in shaping the infrastructural marvels of tomorrow.

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THE ETHICS AND RESPONSIBILITIES OF CIVIL ENGINEERS https://allthingsengineered.com/the-ethics-and-responsibilities-of-civil-engineers/?utm_source=rss&utm_medium=rss&utm_campaign=the-ethics-and-responsibilities-of-civil-engineers https://allthingsengineered.com/the-ethics-and-responsibilities-of-civil-engineers/#respond Mon, 02 Oct 2023 14:36:59 +0000 https://allthingsengineered.com/?p=933 In the vast realm of civil engineering, where the echo of the hammer resonates with societal progress, the underpinning ethos goes beyond mere construction. The UK’s civil engineering landscape enriched by historical and contemporary marvels is a testament to a profound ethical framework. Central to this moral infrastructure are the guidelines from reputable entities such …

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In the vast realm of civil engineering, where the echo of the hammer resonates with societal progress, the underpinning ethos goes beyond mere construction. The UK’s civil engineering landscape enriched by historical and contemporary marvels is a testament to a profound ethical framework. Central to this moral infrastructure are the guidelines from reputable entities such as the Engineering Council, Royal Academy of Engineering and the Institution of Civil Engineers (ICE). 

The UK’s civil engineering ethos is primarily represented by the Statement of Ethical Principles, a collaborative brainchild of the Engineering Council and the Royal Academy of Engineering. This statement, embodying four fundamental principles—honesty and integrity, respect for life, law, the environment and public good, accuracy and rigor and leadership and communication—serves as the moral compass for the engineering community. These principles resonate well with the global ethics of civil engineering, forming a framework that ensures the profession remains trustworthy, sustainable, and beneficial to the public. 

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Further enriching this ethical landscape is ICE’s ‘Say No’ Ethics Toolkit, a pragmatic guide for engineers facing ethical dilemmas particularly those veering towards bribery accusations. The toolkit offers a structured approach to ethical decision-making, elucidating when to say no, how to say no, and the recourse when saying no isn’t feasible. Available both as a webpage and an app, this toolkit transcends the theoretical ethos offering a hands-on approach to upholding moral integrity in practical scenarios. 

Diving deeper into the ethical conundrum, ICE also presents a series of business ethics scenarios, showcasing real-world dilemmas across diverse topics like corruption, environment, health and safety, tendering and more. These scenarios, beyond just highlighting the problems, prompt engineers to introspect on the legality, professional conduct, stakeholder consideration and the broader perception of their actions. The final litmus test—how would one feel if their actions were headlines in tomorrow’s newspaper—reflects the magnitude of ethical considerations in civil engineering. 

Moreover, ICE emphasizes not only individual ethical conduct but propagates a culture of collective ethical awareness. It encourages discussions on ethical issues within project meetings and organizing workshops to debate case studies, thereby fostering a culture of moral mindfulness. The dissemination of ethical awareness transcends to non-ICE members too, underlining the multi-disciplinary nature of engineering projects. 

The ethical conversation does not end here. The dialogue is extended to the broader community through various initiatives. Engineers are urged to share best practices by giving presentations on ethical practice and the ICE Code of Professional Conduct during company lunches or at professional gatherings. This active dissemination of ethical knowledge amplifies the ethos of moral conduct within and beyond the engineering community. 

Intertwining the guidelines from the Engineering Council, Royal Academy of Engineering and the practical tool from ICE creates a robust ethical framework for the UK’s civil engineering sector. This amalgam not only elevates the moral fabric of the engineering community but also amplifies the trust and respect within the societal-engineering interface. 

The essence of civil engineering is not just in the towering structures but in the unseen ethical pillars that uphold them. The UK’s civil engineering ethics, embedded in a rich tradition of moral guidelines and practical tools is a beacon of moral integrity. It’s about maneuvering through the complex moral maze with a clear ethical vision ensuring every brick laid and every beam placed resonates with the profound responsibility engineers hold towards society and the environment. 

In a world where headlines are often dominated by a lot of ethical lapses, the UK engineering sector still stands as a sterling example of moral robustness. The ethical guidelines together with practical tools like the say no tool kit discussed earlier foster a culture where ethics is not just a checklist but a living breathing ethos guiding every decision, project and interaction in the engineering world. This blueprint has thus created a sector that encompasses trust, integrity and societal values elevating the skyline not only in height but in moral stature as well. 

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RECYCLING IN CONSTRUCTION: ASUSTAINABLE BLUEPRINT  https://allthingsengineered.com/recycling-in-construction-asustainable-blueprint/?utm_source=rss&utm_medium=rss&utm_campaign=recycling-in-construction-asustainable-blueprint https://allthingsengineered.com/recycling-in-construction-asustainable-blueprint/#respond Thu, 28 Sep 2023 00:30:17 +0000 https://allthingsengineered.com/?p=923 Historically, the construction sector has been a significant consumer of raw materials and in turn produced a lot of waste. Today that same sector is at the forefront of a green revolution as there is a pressing need to adopt sustainable construction practices with the increased construction and demolition (C&D) waste being produced. This article …

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Historically, the construction sector has been a significant consumer of raw materials and in turn produced a lot of waste. Today that same sector is at the forefront of a green revolution as there is a pressing need to adopt sustainable construction practices with the increased construction and demolition (C&D) waste being produced. This article will delve into the importance of recycling, the challenges faced and the potential innovative solutions. 

Understanding C&D Waste 

C&D waste encompasses the debris generated from various construction and demolition projects, from private homes to international airports. In 2018, the US alone produced a staggering 600 million tons of C&D waste and in that same year the UK produced 202.8 million tons. Because of this, the construction industry is looking for more eco-friendly construction methods to reduce its environmental footprint. 

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Why Recycle in Construction? 

Environmental Conservation: Recycling diverts waste from landfills reducing environmental degradation. It also minimizes the need to extract new raw materials, conserving natural resources and energy. 

Economic Benefits: Recycled materials are often cheaper, reducing costs associated with raw material extraction, processing, and transportation. Moreover, reusing materials can save on disposal costs and even generate revenue. 

Championing the Circular Economy: Recycling exemplifies the circular economy in action. It ensures materials are continually cycled back into the economy, reducing waste, and promoting sustainability. 

Energy Efficiency. Using recycled materials partly or entirely will reduce energy consumption overall. This is because the energy required to re-use them is far lower than that which would be needed to process new ones all the way from harvesting raw materials to transporting the finished product on site. 

Challenges in C&D Recycling 

While a sizable portion of C&D waste is recycled, a large amount still ends up in landfills. Traditional demolition practices often lead to mixed rubble making material extraction challenging, this in turn makes extraction of useful materials complicated. Even with organized deconstruction, materials must be meticulously sorted and separated into distinct categories for effective recycling. Contamination is another issue where materials like wood or plastic mix with concrete meant for recycling. The broad range of materials in C&D from concrete, wood, asphalt, glass, plastics, metals and even whole fixtures like windows further complicates the recycling process.  

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The Merits of Recycled Building Materials 

Recycled building materials are products repurposed from previous constructions including bricks, steel, timber and even entire elements like windows. They can also be products manufactured from waste such as recycled plastic bricks or concrete made from waste steel dust. These materials are both eco-friendly and cost effective plus they can be high performing. 

Examples of Recycled Building Materials

Cement: Recycled cement is mixed with aggregates and water to produce concrete suitable for various applications. 

Topsoil: Excavated soil from construction sites can be processed to create nutrient-rich soil ideal for landscaping. 

Recycled Aggregates: Aggregates can be repurposed for various construction needs, from concrete production to road foundations. 

Recycled steel. Steel is one of the most recycled materials in the world. It can be used in place of new steel to save energy and resources. 

Recycled glass. Crushed glass can be used for countertops, flooring and even as aggregate in concrete saving even more resources. 

Benefits of Using Recycled Building Materials 

Waste Reduction: The construction industry is inherently wasteful. Reclaiming materials reduces reliance on unsustainable disposal methods. 

Energy Efficiency: Processing reclaimed materials consumes less energy than harvesting or manufacturing new ones. 

Emission Reduction: Using recycled materials reduces greenhouse gas emissions, crucial for a sector responsible for a significant carbon footprint. 

Cost Savings: Recycled materials are often more affordable, debunking the myth that sustainable practices are always more expensive. 

The Road Ahead 

To increase recycling in construction, proper organization is necessary. Clear communication with recycling companies ensures appropriate containers are available for material separation from the project’s onset. This will make recycling easier as separation of recyclable materials is the hardest part in the process. More so, conscientious building design that allows for easy disassembly can facilitate effective material reuse at the end of a building’s life. 

In conclusion, recycling in construction is not just an eco-friendly choice; it is a comprehensive approach that intertwines economic, environmental and societal benefits. As the industry continues to evolve, recycling will undoubtedly be at the heart of sustainable construction practices. 

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SITE DRAINAGE AND WATER MANAGEMENT https://allthingsengineered.com/site-drainage-and-water-management/?utm_source=rss&utm_medium=rss&utm_campaign=site-drainage-and-water-management https://allthingsengineered.com/site-drainage-and-water-management/#respond Tue, 15 Aug 2023 20:24:51 +0000 https://allthingsengineered.com/?p=917 Water management is a cornerstone of sustainable construction. Whether you’re embarking on a self-build or overseeing a large-scale development, understanding the intricacies of drainage systems is paramount. Let’s dive into the world of mains drainage and on-site drainage, examining their pros, cons, and applications. Understanding Drainage Systems Drainage systems are intricate networks designed to manage …

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Water management is a cornerstone of sustainable construction. Whether you’re embarking on a self-build or overseeing a large-scale development, understanding the intricacies of drainage systems is paramount. Let’s dive into the world of mains drainage and on-site drainage, examining their pros, cons, and applications.

Understanding Drainage Systems

Drainage systems are intricate networks designed to manage both foul water and rainwater or surface runoff. Internally, a myriad of small waste pipes from sinks, basins, showers, and toilets converges into a soil stack. This stack then channels the waste either towards public sewers or an on-site tank.

Above-ground waste pipes, known as soil and vent systems, are typically installed by plumbers. These systems need proper venting above roof level to prevent foul odors from permeating the house. Below ground these networks, managed by groundworkers, connect to either mains drainage or on-site systems.

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Mains Drainages

Mains drainage is typically overseen by a district’s water company. Connecting to this system often involves accessing main drains, usually located under streets. While this can be a costly endeavor especially if roadworks are required, it’s often more economical than on-site alternatives.

However, challenges arise when the main drains are located at a higher elevation than the site. In such cases, a lifting station equipped with a macerator pump becomes necessary. This system collects waste and pumps it uphill into the mains drainage.

On-site Drainage: An Alternative.

For those in rural areas or those facing prohibitive mains connection costs, on-site drainage systems like septic tanks or sewage treatment plants are viable alternatives. These systems however require land and regulatory permissions. Below are some of the onsite options;

– Cesspit: A basic tank with no outlets, typically emptied periodically by a lorry which makes it less economical.

– Septic Tank: Separates solids from liquids with the latter flowing into a drainage field. The solids would have to be emptied but this happens way less than in cesspits. Modern installations however adhere to higher environmental standards.

– Sewage Treatment Plant: Electrically powered systems that treat waste more effectively than septic tanks, producing cleaner liquid waste.

– Reed Bed: Often part of a sewage treatment setup, especially in areas with poor soil drainage. Bacteria within the reed bed digest sewage and purify the water.

 Cost Implications

On-site drainage systems, while offering autonomy, come with their own set of costs. Initial installation can hover around £15,000, with ongoing costs for maintenance, tank emptying, and electricity for certain models.

Managing Surface Water

Rainwater, unlike foul water, doesn’t require treatment. It can be directed into underground soakaways or nearby watercourses. Modern regulations necessitate thorough assessments to ensure adequate drainage capacity, preventing flooding during severe storms. Additionally, permeable paving might be mandated to mitigate flash flooding.

 Rainwater Harvesting: A Sustainable Approach

Instead of merely directing rainwater into soakaways, one can harness it for household use through rainwater harvesting. This system involves collecting rainwater in an underground tank, filtering it, and then using it for non-potable purposes like flushing toilets, laundry, and gardening.

 Conclusion

Whether you opt for mains drainage or an on-site system, understanding the intricacies of each is crucial. While mains drainage offers convenience, on-site systems provide more autonomy. Regardless of the choice, ensuring effective water management is key to a sustainable, eco-friendly future.

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Overcoming Nature’s Challenges: The Remarkable Rion-Antirion Bridge” https://allthingsengineered.com/overcoming-natures-challenges-the-remarkable-rion-antirion-bridge/?utm_source=rss&utm_medium=rss&utm_campaign=overcoming-natures-challenges-the-remarkable-rion-antirion-bridge https://allthingsengineered.com/overcoming-natures-challenges-the-remarkable-rion-antirion-bridge/#respond Mon, 19 Jun 2023 14:55:15 +0000 https://allthingsengineered.com/?p=905 The Rion-Antirion Bridge is one of my favourite structures. It’s an awe-inspiring construction project that leaves you mesmerised by its magnificence. Its engineering, especially considering the time of its construction, is mind-boggling. Built-in 1999, the Rion-Antirion Bridge spans the Gulf of Corinth near Patras, connecting the town of Rio on the Peloponnese peninsula to Antirion …

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The Rion-Antirion Bridge is one of my favourite structures. It’s an awe-inspiring construction project that leaves you mesmerised by its magnificence. Its engineering, especially considering the time of its construction, is mind-boggling. Built-in 1999, the Rion-Antirion Bridge spans the Gulf of Corinth near Patras, connecting the town of Rio on the Peloponnese peninsula to Antirion on mainland Greece. It’s not the structure that makes it an incredible feat of engineering; it’s the challenging conditions under which it was built. This article will explore how engineers overcame impossible challenges using ingenuity, innovative design, and cutting-edge technology to make this bridge possible.

Challenges:

The area presented several problems, including high-speed winds, deep water (with the bridge crossing waters up to 65m deep), and, most importantly, seismic activity. Constructing a bridge in one of the world’s most seismic-affected areas seemed daunting and pretty much impossible. To address these challenges, engineers had to consider multiple factors, such as:

Foundation concepts: Various foundation concepts were examined to ensure stability and prevent the sinking or failure of the bridge’s foundations.

Span type: The choice between suspension and cable-stayed spans had to be carefully evaluated, considering both economic feasibility and technical soundness.

Seismic activity: The seismic activity in the area caused additional problems that needed to be addressed:

  • Soil liquefaction. This means the soil would temporarily lose its strength and start acting like a liquid when an earthquake happens, potentially sinking the bridge or failing its foundations.
  • Ground shaking. The ground shaking would cause the bridge to start moving in ways it wasn’t designed to do, potentially leading to collapse.
  • Ground displacement. Earthquakes can cause the ground to move in various ways, including sideways and vertical uplifts. These movements had to be accounted for in the design of the bridge.

 

Design and Overcoming Challenges:        

Overcoming these challenges required innovative approaches and the use of cutting-edge technology. Here are some of the solutions that were implemented:


Stable foundation: Due to the deep water and unstable seabed, engineers drove piles 60 meters into the seabed. These piles provided a sound foundation for the bridge and could withstand lateral movement. Topping the piles with a 3-meter-thick layer of gravel allowed the piers to sit and move freely without toppling over.


Suspension system: Four concrete piers placed at the seabed, ranging in height from 48m to 63.5m, are connected by 386 cables. This arrangement gives the bridge its distinct look and has become a symbol of modern-day Greece. The bridge deck is suspended from these cables, allowing it to move freely with the forces of nature without exerting additional loads on the structure. The piers were designed to be flexible, swaying with the motion of earthquakes as they are not directly connected to the piles below them. In 2006, external dampers were installed near the bottom of the anchorage to improve the behaviour of the cables, increasing the overall damping of the cable system.


Viscous dampers: The hanging bridge deck posed a new challenge – the possibility of colliding with the pylons during excessive movement. To address this, engineers installed viscous dampers, the largest in the world at the time, at the pylon locations and transition piers. These dampers limit lateral displacements between the deck and the pylons, dissipating significant energy during seismic activity. They come into action only when the fuse restrainer parallel to them is triggered, which occurs at a magnitude of 10,500 KN during intense seismic activity. This design choice was made considering the frequent strong winds and low-level earthquakes experienced in the Gulf of Corinth, preventing excessive lateral movement of the bridge deck and ensuring its usability.

In conclusion, the Rion-Antirion Bridge is a testament to human innovation and engineering ingenuity. Despite seeming impossible, it was achieved by pushing the boundaries of engineering. Today, it symbolizes Greece’s progress and serves as a reminder of what can be accomplished when engineering challenges are overcome.

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ENGINEERING DISASTERS AND WHAT WE LEARNED FROM THEM https://allthingsengineered.com/engineering-disasters-and-what-we-learned-from-them/?utm_source=rss&utm_medium=rss&utm_campaign=engineering-disasters-and-what-we-learned-from-them https://allthingsengineered.com/engineering-disasters-and-what-we-learned-from-them/#respond Tue, 13 Jun 2023 23:43:02 +0000 https://allthingsengineered.com/?p=879 Over the years, just like aviation, engineering has had its fair share of mishaps, learning, and refinement. Through this journey come errors and unpredicted failures in structures, leading to some catastrophic failures – some so brutal, their consequences have been felt for years. Today, we will explore some of history’s greatest engineering mishaps and the …

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Over the years, just like aviation, engineering has had its fair share of mishaps, learning, and refinement. Through this journey come errors and unpredicted failures in structures, leading to some catastrophic failures – some so brutal, their consequences have been felt for years. Today, we will explore some of history’s greatest engineering mishaps and the effects they had immediately and on the engineering sector as a whole:

1. Chernobyl, 1989: The nuclear catastrophe

 It is impossible to look back in history and not talk about Chernobyl. An engineering tragedy so big  its consequences are still felt to this day. On the 26th of April 1986, during an ill-fated safety test simulating a power outage, the Chernobyl nuclear power plant exploded. This set off a chain of events that would eventually lead to thousands of deaths over the years even though only 31 were directly attributed to the event. During testing of the RBMK-reactor, a major flaw in its design was neglected; it had a positive void coefficient. This meant that as the cooling water boiled off, creating bubbles, the reactor’s power output increased too. Workers had to add some control rods that had initially been taken out to control the reaction, but the rods then displaced the coolant (water) momentarily increasing the reaction rate in the core. This led to an uncontrollable power surge resulting in two explosions in succession. This led to the death of about 31 workers instantly and over the next few weeks, over 115000 people living in areas near the site were also evacuated by authorities. These explosions released radioactive material equivalent to 500 Hiroshima bombs into the environment and the event led to a lot of changes in both nuclear reactor designs and overall safety procedures and policies, serving as a reminder of the potential dangers associated with nuclear energy if safety precautions are ignored.

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2. Tacoma Narrows Bridge, 1940: the swaying Giant

When you talk about disasters, everyone typically thinks of loss of lives. The Tacoma Bridge disaster didn’t involve human casualties, yet it’s one of the most studied engineering failures in history. Originally built in 1940, the Tacoma Bridge stretched from the city of Tacoma to the Kitsap Peninsula in Washington State. It was opened to the public on July 1, 1940, and shortly after it was noticed that it buckled and swayed noticeably in windy conditions. Four months later, it was hit by winds traveling at 42mph which caused it to sway dramatically, leading to its collapse. Fortunately, no lives were lost in the event other than a dog that got stranded in a car on the bridge. Further investigations found that the bridge collapsed because of a phenomenon known as “aeroelastic flutter”, a kind of resonance which wasn’t well known back then. It means the frequency of the winds simply matched the natural frequency of the bridge causing the oscillations of the bridge to grow larger and larger until it buckled and broke. This event was a turning point in engineering, providing valuable insights into the importance of considering all environmental factors and the dynamic forces that act on them over time.

3. South Fork Dam, 1889: Ignoring the Basics

Initially built in 1853, the South Fork Dam disaster is a clear example of what happens when proper engineering practices and maintenance are ignored. The dam meant to hold back Lake Conemaugh collapsed releasing over 20 million tonnes of water into Johnstown killing over 2,200 people in the process. The catastrophe was caused by negligent maintenance and modifications by a fishing and hunting club which lowered the dam to make way for a road, and also removed discharge pipes to prevent fish from escaping. This compromised the structural integrity of the dam which caused for its breach when heavy rains came. The other reason was inadequate spillways, which were insufficient and mostly blocked by debris. The disaster had a profound effect on the engineering process of dams, bringing into account things like regulatory oversight over structures like these preventing the public from making any kind of changes to them. It also highlighted the need for proper maintenance and design which led to better protocols for the entire process. Lastly, risk assessments became necessary considering worst-case scenarios and how they should be dealt with.

Artist’s conception of the South Fork Dam failing or giving way on the afternoon, about 3:15 pm, of May 31, 1889.

NPS/Harpers Ferry Center

4. Hyatt Regency Walkway Collapse: A lesson in communication and Ethics

Considered one of the worst civil engineering disasters in US history, the Hyatt Regency walkway disaster was nothing short of catastrophic. It all started during construction when the steel manufacturer proposed a switch in the design of the steel rods that were supposed to run from the second floor to the ceiling for support. The steel manufacturer thought the design was flawed as the steel rods would have to be screw-threaded to hold the fourth-floor walkway in place, so the contractor suggested using a set of rods that would connect the fourth-floor walkway to the ceiling, and a separate set that would connect the second floor to the fourth-floor walkway. This change doubled the load on the fourth-floor walkway connectors, and since there was a tea party in the atrium on the day of the event with people walking constantly on both walkways above, disaster was inevitable. The second and fourth-floor walkways collapsed into the atrium below, killing over 114 people and leaving about 200 more injured. The Hyatt Regency walkway collapse demonstrated what happens when the communication and approval process is not followed, as some of the modifications were later reported to have been confirmed over the phone rather than checking documentations and recalculating the designs. The disaster also served as a reminder on engineering ethics stressing that no matter what happens, engineers must always put the safety of the public first and should speak up if they see something that could jeopardize this. Lastly, the collapse led to changes in building code and regulations, particularly the importance of independent inspection during the construction phase to ensure structural integrity of structures.

Image: DTR/Wikimedia Commons

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SUSTAINABLE ENGINEERING: WHAT IT MEANS AND WHY IT MATTERS https://allthingsengineered.com/sustainable-engineering-what-it-means-and-why-it-matters/?utm_source=rss&utm_medium=rss&utm_campaign=sustainable-engineering-what-it-means-and-why-it-matters https://allthingsengineered.com/sustainable-engineering-what-it-means-and-why-it-matters/#respond Thu, 08 Jun 2023 22:41:32 +0000 https://allthingsengineered.com/?p=873 Sustainable engineering involves creating solutions that harmonize with the environment and conserve natural resources. As engineers, we bear the responsibility to design infrastructure and products that will serve us for generations without undermining the well-being of our planet. Because let’s face it, a world devoid of fresh air, clean water, and a thriving ecosystem isn’t …

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Sustainable engineering involves creating solutions that harmonize with the environment and conserve natural resources. As engineers, we bear the responsibility to design infrastructure and products that will serve us for generations without undermining the well-being of our planet. Because let’s face it, a world devoid of fresh air, clean water, and a thriving ecosystem isn’t desirable for anyone.

The Shift in Engineering Approach

Sustainable engineering necessitates a holistic approach. It calls for collaboration across various fields and demands careful consideration of a project’s entire lifecycle. Engineers must be proactive and thorough, identifying and mitigating risks associated with new technologies and processes. Sustainability should be a priority from a project’s inception, as about eighty percent of a product’s environmental impact is determined during the development process. Key areas of focus in sustainability include

  • Transportation
  • Food production and preservation
  • Housing and shelter
  • Waste disposal and management
  • Pollution reduction
  • Water supplies
  • Energy development and consumption
  • Restoring natural resource environments
  • Improvements in industrial processes

The Challenges and the Way Forward

Admittedly, sustainable engineering has its share of challenges. The upfront costs of building sustainable structures can be steep due to the demand for specialized expertise. Then, there’s the complexity of interdependent systems that make it tough to pinpoint the most effective practices. Public awareness and acceptance is also a major hindrance in the use of sustainable practices as the public still don’t understand some of the new sustainable methods and materials and are therefore still opposed to them. However, our focus should be beyond these immediate hurdles. We must continue working towards the long-term benefits – think improved health and minimized environmental footprint, efficient use of energy, resilience to climate change, economic efficiency and preservation for future generations.

As Dr. Helen Meese, a chattered mechanical engineer says. “Sustainable design is no longer simply focused on reduce, recycle, and re-use or repurpose. Today, sustainable design is about adding value, designing products that bring societal benefits and solving environmental challenges that are also viable for businesses to implement. Engineers must have the mindset to develop innovative solutions.”

Sustainability is not a destination but a journey and as long as engineers continue to monitor, learn and improve sustainable systems, a better future for all is guaranteed.

OPTIMISTIC FOR THE FUTURE

Emerging technologies, such as Artificial Intelligence, are becoming our allies in this endeavour. These innovations are instrumental in helping us analyse massive datasets and develop ground-breaking solutions. There has also been massive developments in the energy space with things like electric cars, pumped hydro storage, tidal wave energy and so on which have substantially cut the environmental impact of traditional energy.

In Conclusion

Our shared journey towards sustainability is neither brief nor simple, yet the promise it holds for our future is worth every step. It’s a promise of healthier lives, robust economies, and a preserved natural world for the generations yet to come. Every challenge we encounter is a call for innovation, an opportunity to learn, and a step forward in our collective journey.

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THE EVOLUTION OF CITIES: THE RISE OF SMART CITIES AND THEIR CORE PRINCIPLES https://allthingsengineered.com/the-evolution-of-cities-the-rise-of-smart-cities-and-their-core-principles/?utm_source=rss&utm_medium=rss&utm_campaign=the-evolution-of-cities-the-rise-of-smart-cities-and-their-core-principles https://allthingsengineered.com/the-evolution-of-cities-the-rise-of-smart-cities-and-their-core-principles/#respond Thu, 08 Jun 2023 01:43:28 +0000 https://allthingsengineered.com/?p=855 Imagine a world where your morning commute is free of traffic, you don’t have to worry about crime, and the air you breathe is as clear as the countryside. Think of highly efficient waste management, a sophisticated transport system, and even real-time health monitoring; it sounds like a scene out of a minority report doesn’t …

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Imagine a world where your morning commute is free of traffic, you don’t have to worry about crime, and the air you breathe is as clear as the countryside. Think of highly efficient waste management, a sophisticated transport system, and even real-time health monitoring; it sounds like a scene out of a minority report doesn’t it? What if I told you that this is a rapidly approaching reality, especially with the advancement in AI and data collection? According to the world bank, it is estimated that about 56% of the world’s population lives in cities, and it will only increase to more than 70% by 2050. This doesn’t come without its complications however, from overcrowding to strain on infrastructure and public services which is why smart cities are no longer a luxury but a fast becoming necessity . The concept of smart cities has existed for a while now, but is it really going to revolutionize how we work and live our day-to-day lives as some have claimed? Let’s delve into the fascinating world of smart cities and find out!

           

In order to transform a city into a smarter version of itself, there would have to be a strategic blend of technological innovation, collaboration between governments and private sectors, policy changes and above all a hefty amount of investment. When all these work in perfect unison, the main features of a smart city would emerge. Let’s delve into some of these critical prerequisites:

  1. Internet of things (IoT). This is the backbone of any smart city as it links the physical infrastructure to the digital world using sensors, cameras, mobile tracking and algorithms allowing them to work together for a perfect collection and analysis of data which in turn makes the city more efficient. This was seen when London introduced a smart parking project called smartpark which allowed drivers to easily locate free parking spaces quickly cutting down traffic significantly.
  • Sustainability. Environmental consideration in regard to the increasing impact that large cities have on the ecological quality of urban areas. Another major pillar for smarter cities is to prevent further environmental degradation which is achieved through energy effective buildings, renewable energy resources, use of sustainable materials and better planning to facilitate walking and cycling further reducing the need for automobiles.
  • Public safety and security. A smart city must be able to cater for a wide range of needs for its residents and security is one of the most important. Surveillance cameras, predictive policing algorithms and disaster management which relies on real-time data and effective response systems are some of the possible ways to curb crime in smart cities.
  • Big Data and data analytics. In order to make sense of all the data being collected from the smart city. These in turn help city and public service planners to make informed decisions while also being able to predict possible future outcomes of different setups or scenarios.
  • Smart infrastructure. Infrastructure that is able to make use of IoT and big data to optimize its performance to improve efficiency and possibly cut down on the environmental impacts. This can be transportation, energy systems or buildings that can be optimised. It should be noted that this can only be practical with the presence of high-speed internet access which will lubricate the connectivity of the systems while enabling for the residents’ participation in a digital society.
  • Innovation. Innovation means that a smart city should strive for new and better technologies to further improve the quality of its core components and deliver better services while reducing its environmental impacts. Technology is, therefore, a significant aspect of a smarter city.

Conclusion

            As evidenced by Amsterdam’s ambitious Smart City project, the futuristic vision of smart cities is no longer confined to theoretical concepts or tech conventions. Amsterdam’s holistic strategy has not only made it possible for residents to sell surplus energy generated by their solar panels, but it has also pioneered a circular economy ecosystem that champions regenerative resource utilization. This isn’t just an urban revolution—it’s a testament to human ingenuity and our collective drive for a sustainable future. This tangible reality is gradually reshaping our urban landscapes, revealing a brave new world of smart cities that we’re excited to see flourish.

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