Highlights this week: πŸ‘·β™‚οΈ $1T infrastructure bill breakdown, ⚑️7,000 talks on C++ and Rust, πŸ’°TSMC’s 77M metric tons of water, and πŸ’° a $550M early-stage deep-tech fund.

πŸ‘©πŸ”§ Featured job: Simplexity Product Development is hiring a Senior Electrical Design Engineer. See more roles in the Interesting Jobs section below!

πŸ”— Last week’s most-clicked link: A Paper proposing a simple external circuit to be added to each node on a communication bus to make protocols like I2C and SPI more robust for aerospace applications.

$1T Infrastructure Bill β€” the breakdown

What’s happening: Over the weekend, Congress passed the Bipartisan Infrastructure Deal (Infrastructure Investment and Jobs Act), a once-in-a-generation investment in America’s infrastructure and competitiveness.

‍Some background: This Bipartisan Infrastructure Deal will rebuild America’s roads, bridges and rails, expand access to clean drinking water, ensure every American has access to high-speed internet, and more. Combined with the President’s Build Back Framework, it will add on average 1.5 million jobs per year for the next 10 years.

Let’s break it down:

🚰 $55B to expand access to clean water and eliminate lead service lines. Today, nearly 10M American households and 400,000 schools lack safe drinking water.

πŸ›° $65B investment in broadband infrastructure deployment to ensure every American has access to reliable high-speed internet. Today, more than 30M Americans live without access to high-speed internet.

πŸŒ‰ $110B to repair thousands of roads and bridges, and support projects to reduce traffic fatalities (which killed more than 20,000 people in 1H 2021).

🚌 $90B to modernize transit, replacing thousands of deficient transit vehicles with clean, zero emission vehicles, and improve accessibility for the elderly and people with disabilities. Today, America has a multibillion-dollar repair backlog, including more than 24,000 buses, 5,000 rail cars, and 200 stations.

🚒 $42B ($17B to port infrastructure, and $25B to airports) to address repair and maintenance backlogs, reduce congestion and emissions, and drive electrification and other low-carbon technologies.

πŸš… $66B to eliminate Amtrack maintenance backlog, modernize the Northeast Corridor, and bring world-class rail service to much of the US.

⚑️ $7.5B to build out a national network of 500,000+ EV chargers to accelerate the adoption of EVs, reduce emissions, improve air quality, and create good-paying jobs across the country.

πŸ”Œ $65B to upgrade power infrastructure, building thousands of miles of new, resilient transmission lines. Power outages cost the US economy up to $70B annually.

πŸ”₯ $50B to protect against droughts, heat, floods, and wildfires, along with a major investment in weatherization. Last year, the US faced 22 extreme weather and climate-related disasters with losses reaching $100B.πŸ—‘ $21B to clean up Superfund and brownfield sites, reclaim abandoned mine land and cap orphaned oil and gas wells.

How will it be paid for?

Some big sources:

🦠 $200B in repurposed, unused funds originally intended for coronavirus relief

πŸ₯ $50B from delaying a Trump-era rule on Medicare rebates

πŸ“„ $50B from certain states returning unused unemployment insurance supplemental funds.

πŸ‘Ύ $30B from applying information-reporting requirements for cryptocurrency

πŸ’° $60B from economic growth spurred by the spending

πŸ“‘ $87B from past and future sales of wireless spectrum space.

‍Dive Deeper:

A fantastic breakdown of how construction costs in the US compare to the rest of the world. One interesting fact: GDP per capita is 82,000 USD in Switzerland, vs 3893 in Indonesia, a 20x difference.

‍Project details for the $2B Capital Beltway High Occupancy Toll that shows the sheer magnitude of public-private partnerships. 14 miles, 6 lanes. Flour+Transurban (private co's) design, build, operate, and maintain the toll for 75 years. In exchange, they are paid in toll revenue.

Analog Deep-Dive: TSMC water consumption up 80% over the past 5 years 🚰

We publish deep-dives covering engineering topics, history, and companies each week! Read last week’s GlobalFoundries thread on twitter.

Interesting Links πŸ”—:

Caltrans has a Highway Design Manual. This section on bicycle transportation design (lanes, paths, routes) is particularly interesting. To provide cyclists adequate space to see and react to the unexpected, the minimum stopping sight distance based on design speed is 125 feet for 20 miles per hour, and 230 feet for 30 miles per hour.

In case you missed it, watch the OpenTapeOut open-source IC design conference on YouTube.

A (timeless) application note on linear vs switching DC-DC voltage regulators, and the tradeoffs to consider when selecting one for different applications.

‍The Goddamn Airplane on the Goddamn Treadmill. xkcd's fantastic response to the classic thought experiment: Imagine a 747 is sitting on a conveyor belt, as wide and long as a runway. The conveyor belt is designed to exactly match the speed of the wheels, moving in the opposite direction. Can the plane take off?

‍A curated list of nearly 7,000 talks about C++, Rust, embedded, and related subjects.

In the United States, general aviation piston-driven aircraft are now the largest source of lead emitted to the atmosphere.

A thorough antenna selection guide from Texas Instruments, and what parameters to consider (and how) for various PCB, chip, wire, and other antennas.

Interesting Jobs πŸ‘©πŸ”§:

One Interesting Picture πŸ“Έ: cofferdams used in bridge-building

One Interesting Tweet 🐦: softshell turtle? 🐒