Useful conversions
- This topic has 1 reply, 1 voice, and was last updated 1 year, 3 months ago by
.
-
Posts
-
-
I’d like to help everyone around the world who uses differing measure standards. While most of the world is comfortable with Metric, there are a few holdouts that use Imperial. I’m one of those that can use both, and have no issue using conversions. However, I know I am one of a shrinking crowd. To that end, I want to help bring us all together. I also invite everyone to add in their favorite conversion or equality tools / sites / hacks / tables so we can be a happier bunch of crazy enthusiasts, 😁
1. Starting off, Here is a great chart for Plywood from Canadian Wood Council: Chart or see attached.
2. Most everyone has this in one or more places – their phone, their computer / tablet or some other computing device, the built in calculator. It usually has conversions built in, you just have to find the menu to get to them. some phones may require you to change your viewing orientation (rotate sideways) to see the menu or keep it in conversion mode. Experiment to discover your calculator’s quirks.
3. Your on-line search engine. Here, I will call it Google as most people associate it with “search engine”, kind of like Kleenex is tissues and Xerox is photostatic copying. “Google” will convert between many common units, just ask.
-
SIZING YOUR BOX
Taken from my old Qbasic programs, this is assuming you know the volume in Cubic Feet. For conversions from Liters to CuFt, see post above. The Golden Ratio is considered the most pleasing / natural shape to the eye. The Acoustic Ratio is calculated to reduce, to a minimum, the standing waves inside the box.
Hint: Raising to a power as below, you’ll need the scientific version of your calculator. You’ll see the xy button. type your volume, press that button and enter (1/3) to get the cube root of that number. Yes, make sure you add the parenthesis “()”.
GOLDEN RATIO
Volume^(1/3) *12 [Volume raised to the power of 1/3 or .333 multiplied by 12 = interior width in (decimal) inches]
Width (from previous line) * 0.618 = Interior Depth in (decimal) inches
Width (see above) *1.618 = Interior Height in (decimal) inches
To each of these measurements, add 2 * (the thickness of your material) to get overall outside dimensions.ACOUSTIC RATIO
Start by finding the width as above.
Width * .7937 = Interior Depth in (decimal) inches
Width * 1.2599 = Interior Height in (decimal) inches
To each of these measurements, add 2 * (the thickness of your material) to get overall outside dimensions.See Post above to convert from Imperial to Metric.
Remember, as long as your interior dimensions are good, the outside will take care of itself. And these are just starting points. Many is the time I use these calcs and decide I need to modify something, so I start with my volume, divide by the interior side I want to hold/use, then divide by the next side I want to hold/use, then see if the last dimension is acceptable.
-
- You must be logged in to reply to this topic.