Refresh my memory,
We are just starting a new frame, and I can't seem to remember how to mathematically verify the 45 degree angle on this foundation wall.
Normally the other (parallel) walls are long enough on a house, that I can run a 90 degree angle and get it that way.
So this is what I have.
The yellow lines are established as square.
The red circle is a 45 degree.
What I want to know, is
can I deduce the length of the red line given the length of the black lines, and the angle of the red circle?
For instance, If I pull the tape 24' on each black line, I get 44' 4"1/8 as the red line measurement.
BUT I cheated, I used sketchup.:laughing: Before Sketchup as invented, I would have run string lines and tried to get parallel measurements fron the string.
Anybody know the proper formula for this?
Thanks:thumbsup:
BTW what A nice view on this Acreage!
We are just starting a new frame, and I can't seem to remember how to mathematically verify the 45 degree angle on this foundation wall.
Normally the other (parallel) walls are long enough on a house, that I can run a 90 degree angle and get it that way.
So this is what I have.
The yellow lines are established as square.
The red circle is a 45 degree.
What I want to know, is
can I deduce the length of the red line given the length of the black lines, and the angle of the red circle?
For instance, If I pull the tape 24' on each black line, I get 44' 4"1/8 as the red line measurement.
BUT I cheated, I used sketchup.:laughing: Before Sketchup as invented, I would have run string lines and tried to get parallel measurements fron the string.
Anybody know the proper formula for this?
Thanks:thumbsup:
BTW what A nice view on this Acreage!
Attachments

208.4 KB Views: 1,230