This is all of the data that I was supplied for each arc,
1st arc - delta = 04^31'28"
radius = 1366.00'
length = 107.87'
2nd arc - delta = 02^45'24"
radius = 1589.52'
length = 76.47'
2nd arc need to be tangent to first
Place Arc command > Method: Start,Mid,End > Enter Radius 1589.52 > Enter Length 76.47 (sweep angle will be calculated for you) > Choose "Tangent point" as your snap mode > snap to the end of your first curve & accept the direction of curve.
I used start and center and filled in the radius and length and direction , but used the tangent snap for each arc, note I needed as start point, like a horizontal line east west, and also FYI the sweep angle and is also your delta,
delta is the IP angle between the tangents of start and finish which always works out as the sweep angle, so its a good check on the arc length is correct, the start angle in the dialog is also the bearing in angle see my screen shot.. I included my dgn for you too
MicroStation user since 1990 Melbourne Australia.click link to PM me
Good comments on how to use tangent snap and arc key-ins. I couldn't help but notice the plat is a bit deficient. Without bearings on those arcs you'll need to calculate the direction for the starting arc from one of the given bearings along the south boundary. Or construct the south boundary independently then move to fit. Back when I did a lot of this sort of thing, I sometimes found it easier to construct from circular geometry to keep things tangent and going the right direction. Here is a little diagram that should help if you need to go deeper.
I tried to reproduce it with lengths & bearing and tan arcs and it was out by a few meters, I pretended was all just drawing units not feet .. It should work but my survey guy told it’s never going to close because the angles listed are too inaccurate, and lengths shown are too inaccurate... Also the compounded rounding error just keeps growing but it was close... He also said they use the Bowditch (sorry no idea on spelling) method which puts tiny adjustments along the way and forces closure and its these tiny differences are not listed...survey seems to me to be one of the Black arts still living in the modern world and unless your anointed or a disciple you just can’t figure the whole thing out.... bits of secret knowledge missing right?