Thread: LAND MATH QUIZ for 6 June 04

There are generally considered to be 43,560 square feet to an acre.
However for surveying the conversion factor is 43,559.8255788

1,050' x 2,850' = 2,992,500 square feet.

Divide by 43,559.8255788 = 68.6986 acres...

It also = 10,991.7796 rods
or 27.8229 hectares.

It's all right for you land surveyors, we hydrographers don't have the luxury of driving pegs in to hold the earth still while we measure it!

For the moment, I'm working in the old Lands Dept. building in Sydney. This building has, in its outside wall, the benchmark from which all levels in Sydney were taken. In the hallway are the marks against which all the survey chains used to be checked, and across the road is the obelisk from which all distances in the colony were measured.

Tonz, back in 1975 I met an old NZ surveyor. He'd been in both world wars, had retired as head surveyor of the DPW and set up in private practice, and was still practising at 85 years old. An amazing man with a wealth of experience and stories to tell.

Originally Posted by AlexS

It's all right for you land surveyors, we hydrographers don't have the luxury of driving pegs in to hold the earth still while we measure it!

Don't you's guys just use lots of dem satellite thingies to help ya?

I did some orienteering in boy scouts.. does that count?

Now Ralph, for some reverse questioning, how about giving the question again, with the dimension in links, and the answer in Hectares.

Hint, to convert links to metres, you have to multiply by .201168; it's up to you to find out how many links in a foot!

Good Luck!!


P

Well biting midge, having dealt in feet and inches most of my life I am not quite sure about the metric system but, here are what I do know.
A chain is 16'
A meter is 39" so a square meter would be 1521 sq inches /144 = 10.5625 Sq Meters. Or at least that is what I figured out, hopefully.
However the book that I have states that a Square meter is 10.76 = sq ft.
So if an acre is 43560 Sq ft. /10.76 it should be 4048.3271 Sq Meters.
Now if the acreage is 2,992,500 Sq Ft /4047 it should equal 739.43661 Sq Meters.

Now To be honest I do not have any idea what a links and I forget what a rod is.

I don't know about you but this has been a learning experience for me as I have had to use the gray matter and dig into my different books for the answers to some of your quiz.

This has been fun.

Respectfully,

http://www.sciencemadesimple.net/conversions.html

You need this Ralph.

Thank You Robert,
I have installed it into my favorites.

Respectfully,

Good Morning Friends,
First of all I would like to inform you fellows on how you try to help me to understand your ways and methods. Thanks again to Robert for giving me the link to the conversions charts, it is great and will be a great help to me in the future.

Now for the quiz, Tonz, you are 100% correct and actually you could have rounded it off to 68.7 acres.

Thank you all for you support.

Respectfully,

Ralph,
Well done! Or should I say really good try!!

A surveyor's Chain here was exactly 22 yards long, (the length of a cricket pitch), and comprised 100 links. An awful lot of this country is measured in links!

I don't know if a cricket pitch is one chain long, or vice versa, but all of this has some spooky undertones of the metric conversion thread of not long ago!

A Hectare on the other hand is 10,000 square metres (roughly 2 1/2 acres), so if your answer above is correct we would have .0739 Ha. (I Hope)

Thanks for playing along!

P