Construction Physics

Construction Physics delves into the evolution and impact of construction technologies and methodologies, from historical breakthroughs to modern challenges. It explores the significance of infrastructure and development processes, the regulatory landscape, and proposes forward-thinking solutions to pressing issues such as energy strategy and environmental concerns.

Construction Technology and History Infrastructure Development Energy Production and Policy Environmental Impact and Regulation Productivity and Efficiency in Construction Public Health and Building Standards

The hottest Substack posts of Construction Physics

And their main takeaways

How Batteries Are Making the Electrical Grid More Reliable

18999 implied HN points • 19 Jun 25
🕹 Technology Energy Electronics Sustainability Renewables Infrastructure
  1. Batteries help keep the electrical grid stable by balancing the supply and demand of electricity. They can quickly charge and discharge, making it easier to match electricity use with what power plants produce.
  2. The use of batteries in places like California and Texas has grown a lot, making them a key part of the power grid. They help prevent outages and reduce electricity costs by storing cheap energy for when it's needed later.
  3. Batteries can also improve grid reliability by providing fast response to sudden changes in power demand. This is done using advanced technology that allows them to stabilize electricity flow without relying on traditional power plants.

Reading List for 06/14/25

8768 implied HN points • 14 Jun 25
🕹 Technology Robotics AI Infrastructure Energy Innovation
  1. A new executive order in the US is lifting the ban on supersonic flight over land, changing it to a noise-based standard. This could allow quieter supersonic jets to fly legally, which is a big step forward for aviation.
  2. Figure AI showcased a humanoid robot that can autonomously handle various package types efficiently. This demonstration highlights significant progress in robotic dexterity and the use of advanced AI models.
  3. There's a discussion about the data needed to train robots effectively, which is currently tough to gather. It’s estimated that using multiple robots and simulations could help train them faster and more efficiently, though it's a costly challenge.

How Common is Multiple Invention?

24636 implied HN points • 05 Jun 25
🕹 Technology Inventions Science Discovery Innovation Engineering
  1. Multiple invention happens often, with many famous inventions being created by different people at the same time. This shows that many ideas can seem obvious or inspired by similar problems.
  2. Over half of the inventions studied had some form of multiple efforts toward creation, and nearly 40% were successful near-successes. This suggests that important inventions attract a lot of creative minds.
  3. The rate of multiple invention didn't change much over time, implying that when certain conditions are right, many people are likely to think of similar solutions to the same challenges.

Can We Afford Large-scale Solar PV?

27768 implied HN points • 29 May 25
🌞 Climate & Environment Renewable Energy Solar Power Energy Storage Infrastructure Cost Analysis
  1. Solar energy can supply a significant part of electricity demand, with estimates suggesting it could meet 30-40% without needing a lot of extra infrastructure.
  2. Affordable batteries are crucial as they help balance supply and demand, not just for solar but for any energy system.
  3. If the costs of solar panels and batteries keep dropping, we might be able to meet up to 80% of electricity demand with solar, which makes the future of solar power look promising.

Reading List for 06/07/2025

11065 implied HN points • 07 Jun 25
🕹 Technology Energy Housing Infrastructure Regulations Manufacturing
  1. The US battery storage industry is facing challenges, including layoffs and rising costs from tariffs. This makes the future of battery storage uncertain.
  2. Affordable housing in the US is often expensive to build, due to complicated financing and various requirements. This leads to higher costs, despite being labeled 'affordable.'
  3. A map shows housing affordability across US counties, revealing areas where housing is expensive compared to income. Scenic areas often have high housing costs, even with low populations.
Get a weekly roundup of the best Substack posts, by hacker news affinity:

Japan and the Birth of Modern Shipbuilding

29020 implied HN points • 22 May 25
💼 Business Industry Manufacturing Economics Trade Innovation
  1. Japan learned from America's efficient shipbuilding methods used during WWII, which helped them build ships faster and cheaper after the war.
  2. Japanese shipbuilders improved their processes by incorporating prefabrication and aircraft manufacturing techniques, leading to more efficient construction.
  3. Government support and a strong desire to succeed were crucial for Japan's shipbuilding industry's growth, allowing it to become a world leader.

Reading List for 05/31/2025

8977 implied HN points • 31 May 25
🕹 Technology Energy Infrastructure Nuclear Automotive Environment
  1. Wind farms can create 'wind shadows' that harm energy production for neighboring turbines. This has led to competition among developers, often resulting in rushed planning and environmental neglect.
  2. Nuclear power could become cheaper if safety rules, like the 'As Low As Reasonably Achievable' policy, are reconsidered. Overly strict regulations can drive up costs and make nuclear energy less viable.
  3. Chinese car company BYD is cutting EV prices significantly, which is helping it gain market share. In contrast, GM is investing in traditional combustion engines due to slowing EV sales.

Reading List 05/24/25

7724 implied HN points • 24 May 25
💼 Business Remote work Infrastructure Technology Real Estate Economic Policy
  1. Tulsa is attracting remote workers by offering $10,000 to new residents, which helps local businesses and encourages tech company growth.
  2. A tornado in St. Louis caused massive damage, destroying thousands of buildings and resulting in multiple fatalities due to sirens not sounding.
  3. In Shenzhen, stolen iPhones from around the world are often broken down and sold for parts, highlighting a global issue of theft and recycling.

Energy Cheat Sheet

85601 implied HN points • 20 Dec 24
🌞 Climate & Environment Energy Systems Infrastructure Decarbonization Renewable Energy Efficiency
  1. Energy is the ability to do work, like moving or changing things. Everything we do requires energy, and we can't create or destroy it, only change its form.
  2. Most of the energy we use gets wasted, with many losses occurring during energy transformations. Only about a third of the energy consumed goes towards useful work.
  3. Hydrocarbons, like oil and gas, are easy to store and transport, but as we shift to electricity, we need better storage solutions to manage fluctuations in supply and demand.

Why Skyscrapers Became Glass Boxes

59712 implied HN points • 13 Jan 25
🪑 Design Architecture Urban planning Real Estate Construction Aesthetics
  1. Skyscrapers today are mostly glass boxes because they are cheaper and easier to build. This style lets developers create more usable space while saving on construction costs.
  2. Real estate developers play a huge role in deciding how a skyscraper looks. They focus on what will make money, often opting for simpler designs that meet tenant needs but lack ornamentation.
  3. Our interest in building design shapes what gets built. While many developers prefer beautiful designs, the market often pushes for simpler, more modern aesthetics that make financial sense.

Morris Chang and the Origins of TSMC

46767 implied HN points • 31 Dec 24
🕹 Technology Semiconductors Innovation Manufacturing Entrepreneurship History
  1. Morris Chang founded TSMC in 1985, turning it into a key player in the semiconductor industry. He saw the need for a company that could manufacture chips for others, which allowed many new companies to emerge.
  2. Chang's journey was not smooth; he faced many challenges and failures before achieving success with TSMC. Much of his early career included tough breaks, but he persevered and created something significant.
  3. TSMC's unique business model changed how semiconductor companies operated by providing manufacturing services without competing directly with clients. This innovation helped TSMC grow quickly and become vital for tech giants like Apple and Intel.

Why Is Homeowners Insurance Getting So Expensive?

35493 implied HN points • 23 Jan 25
💰 Finance Insurance Economics Real Estate Risk management Climate Impact Homeownership
  1. Homeowners insurance costs have risen a lot over the past years, with a 33% average increase between 2020 and 2023. This has made it tough for many to afford insurance, leading some to rely on state-backed options.
  2. While rising construction costs and home sizes explain part of the increase, climate change and more frequent severe weather events are likely major factors driving up insurance prices further.
  3. Interestingly, even though some types of damage have become less frequent, the cost to repair them has increased, particularly for wind, hail, and water damage, which contribute significantly to higher insurance losses.

Inside the Interconnection Queue

27559 implied HN points • 05 Feb 25
🇺🇸 U.S. Politics Energy Policy Infrastructure Renewable Energy Regulatory issues Economic Impact
  1. There are currently over 11,000 energy projects waiting to connect to the US electrical grid, with a total capacity that is nearly double what currently exists. This shows a huge demand for new power sources.
  2. The waiting time for projects has increased to over 5 years, causing delays in getting new energy infrastructure built. This bottleneck is a significant issue for the growth of renewable energy projects.
  3. Most upcoming projects are focused on renewable energy like solar, wind, and batteries, representing around 90% of planned capacity. This shift highlights a strong move towards cleaner energy across many states.

How We Got the Lithium-Ion Battery

49690 implied HN points • 29 Nov 24
🕹 Technology Energy Storage Battery technology Research & Development Electronics
  1. The lithium-ion battery is key to many modern technologies like smartphones and electric vehicles. Its high energy density and rechargeable nature make it very useful.
  2. The battery's development took many years and involved multiple researchers from around the world. Many discoveries were made by chance, not through a clear, straight path.
  3. Advancements have made lithium-ion batteries much cheaper and more efficient over time. Innovations in materials and manufacturing have helped lower costs and boost production.

How Will the Trump Tariffs Affect Construction?

17955 implied HN points • 12 Feb 25
🇺🇸 U.S. Politics Trade policy Tariffs Economic Impact Imports
  1. Tariffs on imports can greatly impact construction costs. For example, the recent 25% tariffs on materials from Canada and Mexico might lead to higher prices for building projects.
  2. A significant part of construction relies on imports, especially metals and interior components. In 2022, nearly $469 billion in construction-related imports were recorded in the U.S.
  3. Most construction materials come from various countries around the world. No single country dominates the market, showing how global trade supports the construction industry.

The Influence of Bell Labs

40086 implied HN points • 15 Nov 24
🕹 Technology Research Innovation Corporations Development Science
  1. Bell Labs was a great mix of academic and industrial research. Scientists could explore their ideas without worrying about making money right away.
  2. Many companies were inspired by Bell Labs to start their own research labs. They saw that basic research could lead to big breakthroughs, like the invention of the transistor.
  3. Over time, the research environment changed, and companies became less willing to fund long-term, unrestricted research like Bell Labs did. Now, research is often more closely tied to immediate business needs.

How China Is Like the 19th Century U.S.

38624 implied HN points • 01 Nov 24
💾 History Economic Growth Urbanization Manufacturing Cultural Change Social Dynamics
  1. Both China and the U.S. experienced rapid economic growth during their respective Gilded Ages. This growth transformed them into major manufacturing powers with urbanization and infrastructure development.
  2. As both countries industrialized, they saw a significant shift from farming to manufacturing jobs. This change created vast new opportunities for individuals and fostered a culture of ambition and entrepreneurship.
  3. In both nations, a wave of corruption and scams emerged alongside economic growth, leading to significant social and legal reforms aimed at improving conditions and regulating businesses.

What Learning by Doing Looks Like

25889 implied HN points • 12 Dec 24
🕹 Technology Engineering Innovation Research Manufacturing Energy
  1. Learning curves show that the more something is produced, the cheaper it gets. This happens because experience helps make production more efficient.
  2. The evolution of polycrystalline diamond drill bits shows that real-world experience is key to improving technology. Companies learned from failures and made better bits over time.
  3. Understanding how different bits work in different rocks was crucial for progress. Customizing the design of drill bits based on experience led to much better drilling performance.

Reading List 02/01/2025

13779 implied HN points • 01 Feb 25
🕹 Technology AI Data Centers Energy Automotive Manufacturing
  1. Coal power is declining in the US, with many plants converting to natural gas. This shift is largely due to the cheaper cost of natural gas compared to coal.
  2. India is planning to build a massive data center capable of three gigawatts. This would make it the largest data center in the world, responding to a growing demand for AI processing power.
  3. German car manufacturers are facing tough challenges as competition from Chinese automakers grows. Many companies are cutting jobs and exploring partnerships to stay competitive in the market.

Reading List 1/25/25

15032 implied HN points • 25 Jan 25
🇺🇸 U.S. Politics Executive orders Infrastructure Energy Policy Nuclear power Data Centers
  1. Trump's executive orders are focusing heavily on deregulating energy projects, especially fossil fuels, which could speed up development but also pause other renewable projects like solar and wind.
  2. There is a renewed interest in restarting nuclear plants due to rising electricity demand, with several plants now being considered for revival in the U.S.
  3. Data centers are consuming more electricity now than ever, projected to account for a significant portion of U.S. electricity usage in the coming years.

Does All Semiconductor Manufacturing Depend on Spruce Pine Quartz?

31526 implied HN points • 08 Nov 24
🕹 Technology Semiconductors Manufacturing Materials science Supply Chain
  1. Spruce Pine, North Carolina, provides a lot of the high-purity quartz used in making silicon for semiconductors. This quartz is important because it helps produce the pure silicon necessary for making chips and solar panels.
  2. While Spruce Pine quartz is significant, it isn't the only option available. There are other sources and potential substitutes, but they may not be as good or as cost-effective.
  3. The semiconductor industry is exploring new materials for crucibles and increasing the production of quartz elsewhere, which could reduce reliance on Spruce Pine in the future. This means a supply disruption wouldn't completely stop semiconductor manufacturing.

Will the China Cycle Come for Airbus and Boeing?

33196 implied HN points • 23 Oct 24
💼 Business Aerospace Manufacturing Technology Economics International Trade
  1. China has been trying to develop its own commercial aircraft industry for decades but faces many challenges. From technology theft concerns to complex manufacturing processes, it hasn't succeeded like in other industries.
  2. The C919 jet is China's latest attempt to compete with Boeing and Airbus. While it's secured a good number of orders, issues with performance and certification limits its appeal in the global market.
  3. Airbus has been more successful in China due to establishing local assembly lines. This made them more competitive compared to Boeing, which hesitated to set up operations in China.

How Good Are American Roads?

25889 implied HN points • 20 Nov 24
🇺🇸 U.S. Politics Infrastructure Transportation Policy Analysis Urban Development Public Spending
  1. US interstate roads are generally in good shape, with over 80% rated as good or very good. However, urban roads are often much worse, with many in poor condition.
  2. While American roads have decent quality, particularly interstates, there is limited data to compare them directly with roads in other countries, making it hard to draw firm conclusions.
  3. Roads in major US cities can be quite bad, especially in places like California, indicating a need for better maintenance and improvement in urban infrastructure.

Reading List 1/11/25

14614 implied HN points • 11 Jan 25
🕹 Technology Automation Infrastructure Climate Robotics Transportation
  1. The fires in Los Angeles caused massive destruction, displacing over 100,000 people and resulting in damages estimated at more than $50 billion. This highlights the growing risks of wildfires in urban areas.
  2. Self-driving tractors are advancing with new technology, allowing them to perform various farming tasks autonomously. This could help farmers manage labor shortages more effectively.
  3. Automation is not just limited to self-driving vehicles; companies like Chick-fil-A are using robots to automate tasks like lemon squeezing, improving efficiency and making jobs easier for employees.

Reading List 02/15/25

8351 implied HN points • 15 Feb 25
💼 Business Insurance Automotive Investment Infrastructure Technology
  1. California is facing a homeowners insurance crisis, with the state relying on private insurers for a bailout to support its last-resort fire insurance, leading to increased costs for homeowners.
  2. Tech companies are vastly increasing their investments in AI data centers, with major players like Microsoft and Google planning to spend over $215 billion combined this fiscal year.
  3. Tesla is seeing a decline in sales both in Europe and the US, which may be linked to public perception of Elon Musk and his influence on politics.

Reading List 01/18/25

11483 implied HN points • 18 Jan 25
🕹 Technology Space Tech Real Estate Infrastructure Transportation
  1. Real estate development plays a big role in how skyscrapers look and are built. There are great books that explain the process and thinking of developers involved in these projects.
  2. Congestion pricing in New York is improving traffic speeds significantly in a short time. People entering the zone are moving faster, helping them save time and frustration during their commutes.
  3. Some homes in Los Angeles survived wildfires due to smart design choices that included careful landscaping and construction techniques. These details can make a big difference in fire-prone areas.

Reading List 02/08/2025

7933 implied HN points • 08 Feb 25
🔬 Science Physics Engineering Technology Environment Health
  1. Ship-mounted lasers are being developed by the military to counter drone threats. These directed energy weapons may become crucial as drones are more widely used in conflicts.
  2. Santorini is experiencing a series of small earthquakes, leading to most residents evacuating. Authorities are on alert as they prepare for the possibility of a stronger quake.
  3. Ford is facing significant losses in its electric vehicle division as high costs for development and low sales numbers are piling up. The company estimates it could lose up to $5.5 billion this year on EVs.

Reading List 12/14/24

14823 implied HN points • 14 Dec 24
🕹 Technology Semiconductors Electric Vehicles Manufacturing Construction
  1. Japan is investing heavily in semiconductor manufacturing. They're trying to produce custom chips in smaller batches, which could change the industry.
  2. Electric vehicles (EVs) are becoming more reliable over time. Although they had more problems than gas cars last year, the gap is getting smaller as manufacturers improve.
  3. New drilling technologies are being explored to access geothermal energy. Some companies are looking into using methods like microwaves to create holes in the Earth without traditional drilling.

Reading List 01/04/2025

11065 implied HN points • 04 Jan 25
💼 Business Venture Capital Startup funding Infrastructure Natural resources Regulations
  1. There are maps showing natural amenities across the US, ranking places based on factors like temperature and sunshine. The West Coast and Florida score well, while the Midwest does not.
  2. Venture capital funding is shifting, with larger firms getting most of the money while smaller ones are struggling. There's a big drop in initial public offerings, making it tougher for investors.
  3. Boeing's recent struggles can be linked to its past merger with McDonnell Douglas, which seems to have affected its product development negatively.

Reading List 12/28/24

11065 implied HN points • 28 Dec 24
🕹 Technology Manufacturing Pharmaceuticals Engineering Infrastructure Aerospace
  1. China is planning to build the world's largest hydroelectric dam, which could produce a huge amount of electricity and help meet its environmental goals.
  2. Chinese manufacturing is becoming very competitive not just in cars, but also in pharmaceuticals, with Chinese companies now creating many new drugs.
  3. In manufacturing, new startups often struggle financially at first, facing a tough phase called the 'valley of death' before they start making profits.

Reading List 12/21/2024

10230 implied HN points • 21 Dec 24
🕹 Technology Energy Transportation Aerospace Policy
  1. Commercial fusion energy is making progress with a new reactor that could generate power for many homes and create jobs.
  2. Boom Technology secured $100 million to develop a supersonic airliner, but its future remains uncertain due to challenges in airplane engine development.
  3. There's growing interest in using airships for cargo transport, as they can be more efficient than ships and planes for certain distances.

Reading List 12/07/24

9395 implied HN points • 07 Dec 24
🕹 Technology Energy Battery tech Aerospace
  1. Many of the biggest cities in the U.S. are seeing strong economic growth post-COVID, with Austin being the fastest at 30%. This shows how some areas are bouncing back well after the pandemic.
  2. There are many bans on wind and solar energy projects in certain U.S. counties. This could slow down the growth of clean energy despite its importance for fighting climate change.
  3. SpaceX is breaking records with its rocket launches, planning to launch as many rockets in a year as NASA's Space Shuttle did in its entire history. This shows how quickly the space industry is advancing.

Reading List for 11/30/24

9186 implied HN points • 30 Nov 24
🌞 Climate & Environment Energy Construction Automotive Technology Environment
  1. High-rise construction is booming in Canada, with many Canadian cities leading in the number of skyscrapers being built compared to US cities.
  2. Mild hybrids, which are cars that use a small electric motor to support a gasoline engine, are becoming popular in Europe due to stricter emissions regulations.
  3. Offshore oil drilling is seeing a revival, as companies invest heavily in new technologies and seek new sources of oil in response to rising energy prices.

Reading List for 11/23/24

8977 implied HN points • 23 Nov 24
🕹 Technology Construction Automation Robotics Energy Climate
  1. Shipping disruptions can lead to huge costs, like the $89 million loss from a single incident in the Suez Canal. Overall, global shipping costs could reach around $600 million from such events.
  2. Robots that perform specific construction tasks, like roofing, are becoming more common. Companies are focusing on automating certain jobs to improve efficiency in construction projects.
  3. Fusion energy investments are rising, with over $2.5 billion put into it in 2024. Countries like China are significantly increasing their spending on fusion technology.

A Cycle of Misery: The Business of Building Commercial Aircraft

27768 implied HN points • 31 Jan 24
💼 Business Aviation Manufacturing Industry Competition Economics
  1. Developing a new commercial aircraft is incredibly expensive, with development costs exceeding billions and posing significant financial risks to companies.
  2. Aircraft manufacturers face challenges in predicting market demand and trends, with incorrect guesses leading to financial losses and potentially fatal setbacks.
  3. Given the high costs and risks involved in developing new aircraft, manufacturers often opt to revise existing models to mitigate costs, keep pilot training minimal, and maximize efficiency.

Why Is It So Hard to Build an Airport?

22131 implied HN points • 04 Mar 24
💼 Business Infrastructure Aviation Construction Economics Environmentalism
  1. Airports are crucial for global economy, with aviation contributing significantly to GDP.
  2. Building airports is notoriously difficult due to opposition from various interest groups, particularly related to noise concerns.
  3. Despite challenges in airport construction, the aviation industry has managed to adapt and accommodate increased air travel by adding runways, expanding infrastructure, and increasing passenger capacity per plane.

How I Write Posts

21087 implied HN points • 19 Feb 24
🚌 Education Writing Research Reading Editing Tools
  1. The author's writing process involves mainly two types of posts: explanation-driven and exploratory. They often write to understand complex topics themselves and then share their findings.
  2. Extensive research is a crucial part of the author's writing process. They gather information from a variety of sources like books, dissertations, and online resources.
  3. The author follows a structured approach starting from research, reading, and thinking, then moves on to compressing and structuring content, before finally drafting, editing, and posting their work.

What Progress Has There Been in Industrial Robots?

18999 implied HN points • 10 Jan 24
🕹 Technology Robotics Industrial Cost Performance Evolution
  1. Industrial robots have become more cost-effective over time, making them more accessible for various applications.
  2. Advances in industrial robots have led to significant improvements in precision and smooth, continuous motion capabilities.
  3. There has been a trend towards standard robotic architectures, with modern robots primarily consisting of robotic arms with electric drives and servo motors.