Delta angles help please.

[lucas1]

Can anyone give me a simple, straight-forward way to find the delta angle of an arc? I know the length and radius. Thanks in advance for any help I can get.

[SLW210]

Arc Length/Radius = Angle (in Radians). (Radians x 180)/Pi = Angle in Degrees

 

 

See if THIS helps.

[ReMark]

Source: Math for Surveyors.

[ReMark]

An example demonstrated.

 

Source: Math for Surveyors - ESRI Proceedings.

[lucas1]

Thanks everyone. I appreciate the help! I've used alot of the info here and I gotta say it's been VERY helpful. I am in the Penn Foster Drafting w/ AutoCad program and it seems everyone has the same exact questions I've had. I've made it to the civil drafting project and am sure I'll be asking more questions.

[ReMark]

Is that Project 6 the one with the driveway and residence?

[lucas1]

Yes. Ocean Avenue. I'm on plate 2 and having trouble with the cut and fill. I understand the concept but not the method. I am probably mistaken but I feel like not enough info is given with the instructions.

Edited December 11, 2012 by lucas1

[ReMark]

Welcome to the wonderful world of Penn-Foster.

 

I suggest that you start a new thread in the Student Project Questions sub-forum under AutoCAD Beginner's Area. You might want to mention the project name in the title of the thread. I'll look for it there.

[lucas1]

Will do. Thanks.