is it possible to work out a radius with just a small piece of a curve?

Question

i need to find the radius of the curved corner of a building to create an accurate template but cannot think of a way to find out exactley where the centre would be

Answer 1

It's difficult to know your options without knowing how big the building is and what shape it is. If the walls are at right angles then the length of the curved corner will be a quarter or the circumference from which you can find the radius. The radius would be twice the length divided by pi.
If not then, aside from taking a mould and working with tangents, I can't think of an easy way.
The answer above will work very well if you have access to the face of the curve.

Answer 2

I use autocad and layout the ends of the chord and the mid point of the curve, then draw a three point circle and pick off the radius.

Here's the formula if you like working that way.

c = Sqrt ( 4h (2R -h))

c = length of chord

h = Height of chord segment

R = radius Solve the above for the radius.

Answer 3

Stan the Rocker has a good answer let me expand.

Draw two different line connecting different points on the curve. Then draw a perpendicular line 1/2 the way between each of them. The interset of these two lines will be the center of that circle. You can do this with the old fashion compass.

Good luck

Answer 4

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Answer 5

Paint the finished section with one paint first and permit it dry thoroughly. Then masks all the section which you rather prefer to maintain that coloration. making use of a razor blade, make the swirly strains into the tape and cut back away the tape that's masking the section for coloration type 2. Then paint with the 2nd coloration. enable the 2nd paint to dry thoroughly and repeat the technique for coloration type 3. while you're wanting small designs, you're able to do the colors in diverse orders or do it by making use of sections. regardless of each thing the colors are painted, eliminate all ultimate tape.

Answer 6

Draw two chords on your arc and bisect these chords. The bisectors will intersect at the center of the circle.

Answer 7

well if the small peice of curve is the radi then you all ready have the answer cos you can only get 3.14............. curves that are the same length as the distance from the middle