I recently recieved this email with some very good questions. I was given permission to share it here:
I recently downloaded your Simple Rules book (great stuff!). I’m wondering if you could clarify something in it for me. You mention Palladio’s rules for room proportions. My question is: do you consciously try to use these (or other proportions) in your work? Are there occasions where this isn’t practical or warranted? Also, do construction requirements (manufactured material sizes, etc.) frequently get in the way of creating these proportions?
Hey, thanks for reading Simple Rules, and I appreciate even more that you are asking some very important questions.
First, as I did my research for this book I did become much more aware of trying to incorporate things like room proportions in my own work.
However, as you are asking, there are many instances where it is not particularly applicable, or is counterproductive to other key design determinants.
For example, in addition projects where other proportions already exist it may be preferable to coordinate new work to fit with what is existing, rather than enforcing an outside proportioning system.
In other instances, site and programatic constraints may be such that it is impractical to try to adjust plans to fit with ideal proportions.
Palladio’s projects were almost all new construction on open sites in the countryside, and therefore the constraints he put on his own work helped to make what could be arbitrary relationships more orderly and harmonious.
As with all of the rules applied by the great architects and builders of the past, there are exceptions and variations. They are really better thought of as rule-of-thumb concepts, or something to measure arbitrary decisions against.
Lastly, yes, manufacturing and construction methods do affect some of these rules, making them impractical. On the other hand, the standard 4x8 plywood dimension divides nicely into 1:2, 1:3 proportions which allowed builders to choose 12”, 16”, or 24” spacing of 2x4 or 2x6 studs (again 1:2 and 1:3 ratio), so in many cases it is possible to dimension things according to traditional proportions and still work within standard construction methods. More recent standardized systems (window dimensions…) often do not work so well.
I have a question and request from you, as well. First, would you mind if I added your question and this response to my website/ blog page about Simple Rules? (I can leave your name off if you prefer to remain anonymous.)
I think other readers probably have similar questions, and this could be helpful.
Second, if you are willing to write a quick review on Amazon, literally two sentences is fine, it would be really helpful! Reviews help with the algorithms that bring the book up more often for readers like yourself to find.
I hope I answered your questions satisfactorily, and if not just ask another
“Not only should every figure and every expression and action contribute to the general effect, but whatever does not tend to this purpose more or less deteriorates from it.”
“This principle is obvious in all architectural compositions, as well as in those in music …the general style of the composition should ever be throughout in accordance with, and should bear relation to the subject of it, and to the particular characters introduced.
The various figures and parts in a composition should, … moreover be necessary to the place which it fills. If a figure or a metaphor may as well be in one part of the composition as another, it may probably be as well out of it altogether.”
The Music of the Eye Peter Leigh, 1831
IDEAL ROOF PITCHES
simple RULE Roof Framing: Three Pitches in Common Use
Fig. 40 shows the three pitches in common use.
“The pitch at e is called the square pitch, the slant of one side of the roof being at right angles to the slant of the other side, the pitch of the roof being 45 degrees. [12:12 pitch]
The pitch at d is 2/3 pitch, the length of the rafters being 2/3 of the width of the building. [12:9 pitch]
The pitch at c is called 1/2 pitch, the rise being 1/2 of the width of the building…” [12:6 pitch]