We measure walking distances in blocks, the typical spacing of streets. A block is about 300 feet, 100m.
A block is also the land, or the area, bounded by four streets. It's about 5 acres.
We make our words work hard.
Everybody short-changes on wood. A 2x4 isn't.
Now that is hardly universal. I've seen much smaller blocks, as well as much larger blocks all over the US.
A hectare is approximately 2.5 acres.
Just as an inch is approximately 2.5 centimeters.
Conversion from centimeters to inches: multiply by two, then divide by five.
Same works for acres to hectares.
Well it'll be less if it's planed. I don't know whether the measure includes the width of the saw cuts. Maybe we should insist on the sawdust and planings.
In my old Victorian, built in 1892, the 2x4's really were 2x4.
A bit less than 70 yards square (ie 4840 square yards). 70 yards is easily envisaged, and is something that most young folk can run in about
10 seconds.
The blocks were I am are usually about 3 times as long as they are wide.
Feet to metres is easier and more accurate: multiply by 0.3 (by 3 and move the decimal point)
rbowman snipped-for-privacy@montana.com wrote
They did here with house blocks before we went metric. Normal residential blocks in suburbia with 1/4 acre or
1/5 acre and the posher places were 2 acre etc.
This is a cool book.
They'll sell those to you for your pellet stove...
Those crosstown blocks in NYC are a bitch.
It sounds cooler if you say a chain by a furlong.
Too bad it is not like pipe sizes where they seem to stay the same and the actual size seems to be a lot larger than what it is called.
I seem to recall that it depends on whether your talking about pipe or tube. Pipe (as in 15mm copper or plastic pipe) is always 15 mm in outside diameter. Whereas ½” tube, will always have a ½” internal diameter.
Or it could be the other way around. ;-)
Tim
Pipes have to mate with threads or glued/soldered couplings. Wood is nailed, so size doesn't matter much.
I haven't measured copper wire to see how honest it is.
Wood has to sort of mate. Just think how a floor would look if some older sheets of plywood were placed with the newer, smaller szes.
Fire a Mac from a Panzer.
Same here.
I was taught i in Maths, then changed to j for electronics. Stupid Maths teachers.
I studied physics at uni and always used f. The v is too close to the English v for velocity. You'd have v=vλ
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