Open Source Ecology Propagelle Project, 29 Jan 2012

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From YouTube: Rotating laser level and receiver

Description

Jvkgkgogogg

A

About the transit, this is a laser level. Alright,.

A

Five foot three inches from the laser beam level.

A

B

From the ground know from.

A

Now set a contour, that's two feet lower than this I take I, add two feet: I'm, going to seven three and I'm: gonna walk downhill.

A

Right so we need another, we need another.

A

That constant beam, yep I'm perfectly level now.

B

A

Low-Key 20 chirps I can.

B

Tell but just by listening to it whether I should go uphill or downhill.

A

All right, I'm now at 73, because I was two feet below five. Three I'm gonna go to nine three.

A

You can see the.

C

That's just the laser.

A

Transit laser laser level and you can see the white flags coming down here. I've got three contours of two feet: yeah.

B

A

Right, those contours now make a step. What you would do is to measure the distance now, and you would know that. That's the tread, if you like it, stair steps coming down the hill and I've taken the quickest route down the hill, that I could I didn't. Take I didn't go along the ridge to do the contours, because when you come down this way, you're trying to make sure that the tread that this distance is never less than 25 feet, and it will be unless you take this the steepest way down.

A

Then, when you're 25 feet guaranteed on the steep way, all the rest of them will be wider than that, because they're broader right, they spread yep.

B

A

Now we're going to do, we need to do one more shot. Eleven three.

A

A

12 3 I'm gonna put this down one more.

C

One foot instead up to.

A

Keep going I'm gonna be off the end of the property right, so I would normally put two flags crossed where it leaves the property. Now, if my property is gridded, I know exactly where it's coming off on the map and on the ground. Okay, so these are now my contours. If I decide that 2 feet is the interval that I want and on these gentle slopes 2 feet it's very feasible. None of them are shorter than 25 feet, so they meet the criteria for being. Ok. If it was 3 feet, they'd be even broader.

A

Wouldn't these benches would be even broader, but I can turn my tractor around on each of these contours, so I'm AG, Racal, chirally sound if I. If this is the narrowest place, I can turn around here. Everything else would be broader, and now these are. We have established what we call these as vertical intervals. These.

B

Are vertical intervals.

A

Didn't take very long, you start at the highest point and you go to the lowest point the fastest way you can. So when you get to your place, then you're gonna go up in that corner on top of that Ridge and shoot down as fast as you can get it. This is the drain right.

C

A

This is the quickest drain. There is alright, that's you're, just gonna do what I just did. Ok.

C

And the next step after this, so we we get the compass.

A

A

I need to flag. This is no I need what.

A

Let's start here.

C

A

Right, I'm gonna walk about 20 steps.

C

Yeah so you're getting our contours of the same elevation right now.

C

Think you have to go up block.

A

C

You got to go uphill.

C

It could be the shed there. Yes,.

A

Any time there's that metal around it.

C

So that's the basic process just put the elevation lines in right now.