Mathmatical question.?

I am building a patio cover. I want the ends of my lattice boards (2" x 3" boards) to overhang and form a half circle. The middle being the longest overhang and the 2 ends to be the shortest overhang.
I don't want it to form a "V", but a half circle. How do I determine how long to cut each lattice board?
I hope this is enough info. Let me know if you need more details.
Thank you.

Answer:
Few ways i can think of. First would be to use cad software and draw it out. Next would be to use trig and few hours. Last Get some string, roll of paper go out side and use a pen and that string to draw out the arc. Next measure everything you need.

But then again you know someone around here must have the math formula to do it hehe :) In most cases when this is done they don't precut the wood, they put it up then draw a arc and cut it :)
It might be easier NOT to try and figure out the math from a practical perspective. Ive seen carpenters nail the boards down as they are and let the boards "hang long". Then, they take a string that has a pencil attached to one end and keep the other end fixed about where the center of your circle is. Imagine nailing a string down (fixed to some point) in the middle of your patio roof and walking around the point in a circle. With this free end, layout where you will cut it (this might take a couple tries until you get the mark where you want it...now can use a saw to cut out your arc.

The answers post by the user, for information only, FunQA.com does not guarantee the right.



More Questions and Answers:
  • How many nuclear power plants would we have to build to power the entire country?
  • What is the difference between a pressure transmitter and a pressure transducer?
  • What is the formula to calculate the instant centre of a curve? what is the instant centre?
  • In an LR oscillator what determines the frequency L/R or L*R?
  • How much pressure is required to push up and down the piston of a 4cyl internal combustion engine?
  • What is the boundary to distinguish the limit of solid and liquid (i.e soil in solid and as a mud)?
  • Is the author of "Refining precious metal wastes", C.M. Hoke still alive? If not, when did he die?
  • Standard Height for all tables/ Chairs?
  • What is electrical current?