Answers.Body: <p>In the 60s, Lego did produce a separate system for architectural modelling called <a href="http://brickfetish.com/timeline/1963.html" rel="noreferrer">Modulex</a> which used a 1:1 ratio 5mm cube as its basic brick. It wasn't successful and was discontinued in the late 60s.</p>
  
  <p>I believe the 6:5 was chosen so that <a href="http://www.clear.rice.edu/elec201/Book/legos.html" rel="noreferrer">studs could fit into the geometry</a>. Related: why the plate is 1/3 of the brick's height. By adding two plates to the height of the brick vertically you can now match the centres of two horizontal units (6+2+2):(5+5)</p>
  
  <p><img src="https://i.sstatic.net/laMzd.gif" alt="Lego Dimensions"></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2011-11-05T04:10:56.980Z
Answers.Text: Thanks for your answer. Your explanation for the height of a plate is indeed quite convincing. I'm not sure I understand what you mean by studs fitting in the geometry though. Could you please elaborate ?
Answers.UserDisplayName: Joel Cohen
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Answers.Text: @ghoppe: I'm confused. Didn't the bricks with holes in come *years* after the plates? Were Lego really planning that far ahead? OTOH, I can't imagine that the geometry you describe is a happy coincidence.
Answers.UserDisplayName: Kramii
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Answers.CreationDate: 2011-12-06T10:18:12.937Z
Answers.Text: From everything I've seen, the geometry is very well thought out and seems to cover all eventualities (or was just very lucky :o)
Answers.UserDisplayName: Deanna
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Answers.CreationDate: 2014-02-26T11:00:21.333Z
Answers.Text: It was a part of an [old logo](http://img3.wikia.nocookie.net/__cb20091120142823/lego/images/c/c2/1965_logo.png), with the five bands signifying the five 2x2 plates needed to get a 2 brick width.
Answers.UserDisplayName: SQB
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Answers.CreationDate: 2011-11-04T20:29:58.520Z
Answers.LastActivityDate: 2011-11-04T20:29:58.520Z
Answers.UserDisplayName: ghoppe
Answers.Body: <p>Thinking Lego started with 2×4 bricks of 1.25 inches. As they made model tractors not from bricks, they made the height of bricks to be equal to the difference between the small and large wheels' centres to build tractors. So (√10 - √2) ÷ 2, but needed to add the size of a stud. Or could just be that 2×4 studs fit the size of a large wheel. In fact 2×4 fits large wheel, but 2×2 overlaps the tyre on small wheel.
  Slope, 1:1, 100%, 45°, but they have a vertical edge. Guess that = 1/16&quot; &amp; needed to take studs underneath, but not as much as a slimbrick as sloping up from it.</p>
  <p>Plates need enough height for studs underneath.</p>
  <p>I have some bricks (not compatible with Lego) whose height equals the width of one stud pieces, and whose height is equal to that of 2 plates. I guess a 1/2 Lego plate wouldn't look right for a flat roof, which is their main use?</p>
  
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Answers.CreationDate: 2022-11-15T10:32:14.057Z
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Answers.LastEditDate: 2022-11-20T00:15:24.107Z
Answers.UserDisplayName: Andrew Hodson
Body: <p>The height of the 1x1x1 LEGO brick is 6/5 times its width. Is there any particular reason for these proportions? And especially why not making a cubic brick (it would have made SNOT building easier)? </p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2011-11-04T18:50:20.133Z
Comments.Text: In the same line: Why is a plate 1/3 of the brick's height?
Comments.UserDisplayName: pcantin
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2011-11-10T23:08:04.923Z
Comments.Text: Probably to simulate *real* bricks: each of their dimensions are a different length.
Comments.UserDisplayName: wersimmon
Tags: <piece-information><history>
Title: Why aren't LEGO bricks cubic?
UserDisplayName: Joel Cohen
ThreadText: # Why aren't LEGO bricks cubic?
  
  (Asked by: username_0 on 2011-11-04)
  
  The height of the 1x1x1 LEGO brick is 6/5 times its width. Is there any particular reason for these proportions? And especially why not making a cubic brick (it would have made SNOT building easier)?
  
  **Tags:** piece-information, history
  
  > **Comments:**
  > **username_1**: In the same line: Why is a plate 1/3 of the brick's height?  
  > **username_2**: Probably to simulate *real* bricks: each of their dimensions are a different length.  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_3 on 2011-11-04. Score: 26
  
  In the 60s, Lego did produce a separate system for architectural modelling called [Modulex](http://brickfetish.com/timeline/1963.html) which used a 1:1 ratio 5mm cube as its basic brick. It wasn't successful and was discontinued in the late 60s.
  
  I believe the 6:5 was chosen so that [studs could fit into the geometry](http://www.clear.rice.edu/elec201/Book/legos.html). Related: why the plate is 1/3 of the brick's height. By adding two plates to the height of the brick vertically you can now match the centres of two horizontal units (6+2+2):(5+5)
  
  ![Lego Dimensions](https://i.sstatic.net/laMzd.gif)
  
  > **Comments:**
  > **username_0**: Thanks for your answer. Your explanation for the height of a plate is indeed quite convincing. I'm not sure I understand what you mean by studs fitting in the geometry though. Could you please elaborate ?  
  > **username_4**: @username_3: I'm confused. Didn't the bricks with holes in come *years* after the plates? Were Lego really planning that far ahead? OTOH, I can't imagine that the geometry you describe is a happy coincidence.  
  > **username_5**: From everything I've seen, the geometry is very well thought out and seems to cover all eventualities (or was just very lucky :o)  
  > **username_6**: It was a part of an [old logo](http://img3.wikia.nocookie.net/__cb20091120142823/lego/images/c/c2/1965_logo.png), with the five bands signifying the five 2x2 plates needed to get a 2 brick width.  
  
  ---
  
  ### Answer by username_7 on 2022-11-15. Score: 0
  
  Thinking Lego started with 2×4 bricks of 1.25 inches. As they made model tractors not from bricks, they made the height of bricks to be equal to the difference between the small and large wheels' centres to build tractors. So (√10 - √2) ÷ 2, but needed to add the size of a stud. Or could just be that 2×4 studs fit the size of a large wheel. In fact 2×4 fits large wheel, but 2×2 overlaps the tyre on small wheel.
  Slope, 1:1, 100%, 45°, but they have a vertical edge. Guess that = 1/16" & needed to take studs underneath, but not as much as a slimbrick as sloping up from it.
  
  Plates need enough height for studs underneath.
  
  I have some bricks (not compatible with Lego) whose height equals the width of one stud pieces, and whose height is equal to that of 2 plates. I guess a 1/2 Lego plate wouldn't look right for a flat roof, which is their main use?
  
  
  ---
  
  