Help for solving curve

Discussion of MicroSurvey CAD related issues and questions.

Moderators: Brian Sloman, Jason Poitras, James Johnston

Help for solving curve

Postby Stephen_P » Sat Feb 05, 2005 2:33 pm

(1).If I know two bearings from the ends of a curve to the central point, one of the ends of the curve and the arc length, how to solve it?
(2). How to proportion an entity by reference to a similar line or curve.


Thanks lot.
Stephen_P
 
Posts: 47
Joined: Sat Oct 30, 2004 11:35 am

Curve Calculations

Postby Glen Cameron » Sat Feb 05, 2005 9:24 pm

1) If you know the two bearings then you have the delta (internal angle between the two bearings). With the Delta and the Arc length, you can use our Curve Problem Solver (MsTools menu -> Curves) to calculate the rest of the info for the curve. Then via COGO you should be able to set the points to define the curve and inverse the curve to draw it.

2) I am not sure what you are asking here. Can you provide more details on what you have and what you are calculating? We do have a proportioning routine under the MsCOGO menu, would this help you in your case?

Cheers,
Glen W. Cameron, C.E.T.
City of North Bay, Ontario
Glen Cameron
 
Posts: 1395
Joined: Fri Nov 08, 2002 12:18 pm
Location: Corbeil, Ontario, Canada

Postby Stephen_P » Sun Feb 06, 2005 12:12 pm

For example, I have a triangle and wanna expand the triangle to a similar triangle one side of which is known.

thanks.
Stephen_P
 
Posts: 47
Joined: Sat Oct 30, 2004 11:35 am

Scale

Postby Glen Cameron » Sun Feb 06, 2005 2:10 pm

Try the SCALE command and when it asks for the scale factor pick on the Reference option on the option bar - then you can tell it the original size and a new size to go to. That may do what you are asking.

Cheers,
Glen W. Cameron, C.E.T.
City of North Bay, Ontario
Glen Cameron
 
Posts: 1395
Joined: Fri Nov 08, 2002 12:18 pm
Location: Corbeil, Ontario, Canada

Postby Stephen_P » Sun Feb 06, 2005 3:58 pm

It actually did well on line entity, but failed to curves because I could't pick the curve at the prompt of reference length.
Stephen_P
 
Posts: 47
Joined: Sat Oct 30, 2004 11:35 am

Postby Stephen_P » Thu Feb 10, 2005 3:39 pm

pls help.
Stephen_P
 
Posts: 47
Joined: Sat Oct 30, 2004 11:35 am

scaling

Postby Glen Cameron » Fri Feb 11, 2005 5:28 am

The reference option allows for 2 picks of the screen for scaling, so try using the chord distance for the arc. I don't see any other way of doing what you are asking.
To be honest, I am not sure what or why you are doing this to start with :) Do you have a real world example?

Cheers,
Glen W. Cameron, C.E.T.
City of North Bay, Ontario
Glen Cameron
 
Posts: 1395
Joined: Fri Nov 08, 2002 12:18 pm
Location: Corbeil, Ontario, Canada


Return to MicroSurvey CAD

Who is online

Users browsing this forum: Google [Bot] and 3 guests

cron