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Practical Engineering tests what keeps windows warm and safe
Grady Hillhouse's heat experiments and hammer tests reveal why a transparent wall needs so much hidden engineering.
YouTube channel
Practical Engineering
@practicalengineeringchannel · The channel on YouTube
Website: practical.engineering
In short
On YouTube, Practical Engineering has 4,840,000 subscribers and 575,859,900 views in all, as of November 11, 2026. In the last 7 days it gained 1,554,100 views. Its most watched video of the last 30 days is "Whatever Happened to Fire Escapes?", with 1,091,838 views. By YouTube subscribers it is No. 619 of the 5,393 channels on Trari, and No. 17 of 87 in category "Science and experiments". On Instagram, @practicalengineering has 21,460 followers. The account gained 51 followers in the last 7 days.
YouTube: The numbers today
subscribers
4,840,000
no significant change in the last 7 days
no significant change in the last month
no significant change in the last month
total views
575,859,900
▲ 1,554,100 in the last 7 days
▲ 5,122,650 in the last 30 days
▲ 5,122,650 in the last 30 days
views a day (current pace)
57,434
on a typical day: 167,263
Videos on the channel
254
1 uploaded in the last 7 days
Last upload
yesterday
November 10, 2026
Views per subscriber
118
a new long video usually gets 1,162,266 views
Next milestone
5,000,000 subscribers
160,000 subscribers to go
Instagram: The numbers today
@practicalengineering · The account on Instagram
Followers
21,460
▲ 11 a day, on average over the last 2 days
▲ 51 in the last 7 days
▲ 51 in the last 7 days
Posts
469
Views per Reel
8,919
usually, by 14 recent Reels
Likes per post
181
usually, by 15 recent posts
0.84% of followers
0.84% of followers
Place on Instagram
| Among all channels on Trari | In the category Science and experiments | |
|---|---|---|
| By Instagram followers | 2,199 of 2,442 | 39 of 43 |
Ranked among the channels whose Instagram account is on Trari.
Instagram followers: Science and experiments
Latest posts
Tap a post to see it here
| Post | Type | Posted | Views | Likes | Comments |
|---|---|---|---|---|---|
| I've been working toward this day for more than two years. My new book is… | Photo | July 7, 2026 | - | 160 | 17 |
| I partnered with city.of.sanantoniotx , sanantonioriver , freesenichols , and… | Reel | January 7, 2025 | 9,609 | 362 | 11 |
| What’s the deal with base plates? New video on YouTube today. | Reel | December 3, 2024 | 10,326 | 326 | 6 |
| Ever wondered which power plant your electricity comes from? The answer is… | Reel | November 19, 2024 | 6,026 | 157 | 0 |
| Why are cooling towers shaped like that? New video on YouTube today. | Reel | November 5, 2024 | 8,230 | 300 | 2 |
| The wild story of the Taum Sauk reservoir failure and rebuilding. On YouTube… | Reel | October 15, 2024 | 18,461 | 181 | 6 |
| Have you heard that the world is running out of sand? New video on YouTube. | Reel | October 1, 2024 | 5,376 | 157 | 0 |
| What’s a SCADA system and how can one be hacked? On YouTube today. | Reel | September 17, 2024 | 4,420 | 115 | 0 |
Of the 15 latest posts: 14 Reels and 1 photo.
As of November 11, 2026
Follower, post, like, comment and view counts in this part are Instagram's. The changes and the "usually" figures are Trari's own calculations.
YouTube: What happened lately
November 10, 2026 passed 1M views The Grid That Doubles the Strength of the Ground The video passed 1,000,000 views.
This week on the channel +828K views this week
Practical Engineering asks where the fire escapes went
Grady Hillhouse traces the shift from outdoor iron stairs to protected interior exits, with a detour through some unlikely patents.
This week on the channel +1.3M views this week
Practical Engineering cuts into the mechanics of pressure regulation
Grady Hillhouse opens up an everyday device he describes as a Victorian-era mechanical computer.
The video drawing the most views now
My First Mistake as an Engineer
- Video published
- November 10, 2026
- Video views so far
- 163,256
- Video views, pace per day
- 213,853
- Views in its first 14 hours
- 163,256
Similar channels
YouTube: Position on Trari and in the category
| Among all channels on Trari | In the category Science and experiments | |
|---|---|---|
| By subscribers | 619 of 5,393 | 17 of 87 |
| By views gained this week | 2,202 of 5,274 | 29 of 87 |
| By views gained in the last 30 days | 2,482 of 5,043 | 35 of 81 |
The ranking by views counts only channels whose weekly number is available.
- The channel's share of the category
- 0.3% of all views the category's channels gained this week
Subscribers in the category Science and experiments
Views gained this week in the category Science and experiments
YouTube and Instagram: Subscribers and followers, last 30 days
Growth in percent since November 4, 2026, so both lines start from the same point
- YouTube · 4,840,000 subscribers 0% (0)
- Instagram · 21,460 followers +0.24% (+51)
From November 4, 2026 to November 11, 2026: on YouTube from 4,840,000 to 4,840,000 subscribers (0%), on Instagram from 21,409 to 21,460 followers (+0.24%).
YouTube rounds a large channel's subscriber count, so its line moves in steps.
The numbers by day
| Day | Subscribers (YouTube) | Followers (Instagram) |
|---|---|---|
| November 11, 2026 | 4,840,000 | 21,460 |
| November 10, 2026 | 4,840,000 | - |
| November 9, 2026 | 4,840,000 | 21,438 |
| November 8, 2026 | 4,840,000 | - |
| November 7, 2026 | 4,840,000 | 21,419 |
| November 6, 2026 | 4,840,000 | - |
| November 5, 2026 | 4,840,000 | 21,408 |
| November 4, 2026 | 4,840,000 | 21,409 |
YouTube: Total views, last 30 days
October 13, 2026: 570,873,012 views → November 11, 2026: 575,859,900 views · average: 171,961 views a day
YouTube: The channel's latest videos
The last 15 videos uploaded to the channel, with today's numbers. Click a video to play it here.
| Video | Uploaded | Length | Views | Per day | First day | Likes | Comments |
|---|---|---|---|---|---|---|---|
 My First Mistake as an Engineer | November 10, 2026 | 7:49 | 163,256 | 213,853 | 163,256 (14 hours) | 5,832 | 345 |
 Windows Are Absurd | November 3, 2026 | 24:29 | 966,223 | 29,713 | 466,245 | 23,690 | 1,276 |
 Whatever Happened to Fire Escapes? | October 20, 2026 | 18:07 | 1,091,838 | 10,129 | 474,506 | 21,347 | 965 |
 The Hidden Engineering of Pressure Regulators | October 6, 2026 | 16:34 | 1,974,478 | 3,869 | - | 29,647 | 873 |
 Every US Electrical Outlet Explained | September 15, 2026 | 21:33 | 1,562,745 | 1,874 | - | 29,459 | 2,666 |
 Stopping the Unstoppable | September 1, 2026 | 15:46 | 5,589,768 | 5,699 | - | 61,423 | 2,974 |
 Are Beavers Actually Good at Dams? | August 18, 2026 | 19:15 | 1,350,622 | 1,012 | - | 35,639 | 1,941 |
 The Grid That Doubles the Strength of the Ground | August 4, 2026 | 18:28 | 1,002,355 | 1,815 | - | 34,249 | 1,229 |
 What's Under Your Feet in New York City? | July 21, 2026 | 22:32 | 857,123 | 790 | - | 28,559 | 1,220 |
 The Mind-Blowing Flaw That Flooded New Orleans | July 7, 2026 | 24:34 | 2,034,739 | 812 | - | 54,518 | 3,089 |
 Bridge Demolition is Complicated | June 16, 2026 | 17:56 | 589,353 | 275 | - | 26,082 | 1,006 |
 Why Roads Get Washboards | June 2, 2026 | 17:54 | 3,390,366 | 974 | - | 81,753 | 4,746 |
 Fixing the Most Dangerous Dam in the World | May 19, 2026 | 22:23 | 687,967 | 298 | - | 27,055 | 1,143 |
 The Physics Behind the Thumb Trick | May 5, 2026 | 17:43 | 1,068,993 | 142 | - | 31,234 | 1,686 |
 The Wild Story of the Teton Dam Failure | April 21, 2026 | 19:23 | 1,232,695 | 248 | - | 35,031 | 1,208 |
Audience engagement
- likes per 1,000 views
- 22.3 in the category: 30.2
- comments per 1,000 views
- 1.1 in the category: 1.1
- short vs long
- 0 short (up to 3 minutes), 15 long
average views per long video: 1,570,834
YouTube: Most watched videos (not Shorts)
| Video | Uploaded | Length | Views |
|---|---|---|---|
 The Bizarre Paths of Groundwater Around Structures | June 7, 2022 | 14:02 | 14,265,666 |
 How Do Sinkholes Form? | June 28, 2017 | 6:41 | 13,281,162 |
 The Hidden Engineering of Landfills | September 3, 2024 | 17:04 | 11,948,307 |
 Why Concrete Needs Reinforcement | April 25, 2018 | 8:11 | 11,521,693 |
 The Wild Story of the Taum Sauk Dam Failure | October 15, 2024 | 20:10 | 11,453,167 |
YouTube: Most watched Shorts
| Video | Uploaded | Length | Views |
|---|---|---|---|
 Name That Infrastructure (Ep. 16) #shorts | October 25, 2022 | 0:58 | 3,204,540 |
 Name That Infrastructure (Ep. 7) #shorts | June 14, 2022 | 1:00 | 2,105,530 |
 Name That Infrastructure (Ep. 11) #shorts | August 9, 2022 | 1:00 | 970,286 |
 Name That Infrastructure (Ep. 4) #shorts | May 10, 2022 | 1:00 | 830,954 |
 Name That Infrastructure (Ep. 13) #shorts | September 14, 2022 | 1:00 | 775,400 |
YouTube: What happened on the channel in the last 30 days
The days when the channel's numbers left the ordinary.
- MilestoneThe Grid That Doubles the Strength of the Ground The video passed 1,000,000 views.
- Views jumpThe whole channel ran that day at 560,274 views a day, 4 times a normal day (140,807).
- MilestoneWhatever Happened to Fire Escapes? The video passed 1,000,000 views.
- Views jumpThe whole channel ran that day at 803,763 views a day, 4.4 times a normal day (180,729).
Data source: Trari Social News, Trari Traffic Trends and Ranking Platform, Google YouTube, Meta Instagram
Subscriber, view, like and comment counts are YouTube's. Rates, usual days, rankings, comparisons and categories are Trari's own calculations.
Stories
A video worth knowing
Practical Engineering tests what keeps windows warm and safe
Grady Hillhouse's heat experiments and hammer tests reveal why a transparent wall needs so much hidden engineering.
This week on the channel +828K views this week
Practical Engineering asks where the fire escapes went
Grady Hillhouse traces the shift from outdoor iron stairs to protected interior exits, with a detour through some unlikely patents.
This week on the channel +1.3M views this week
Practical Engineering cuts into the mechanics of pressure regulation
Grady Hillhouse opens up an everyday device he describes as a Victorian-era mechanical computer.
This week on the channel
Practical Engineering's 'Stopping the Unstoppable' still leads at 27 days
No new video went up, and a two-week-old guide to American outlets is running almost level with it, while a spring video about washboard ro…