Sunburned_Surveyor
02-02-2004, 05:46 AM
To all the old pros:
I had 2 more questions on the BLM Manual, if you have time to respond. I appreciate all the answers.
Both of my questions are on sections under the heading "Allowable Deviation in Bearing" in Chapter #3.
Question #1: Section 3-26 states, "Where a random latitudinal boundary closes on a new meridional exterior, the temporary township corner is adjusted to the latitude of the opposite township corner." How is this done? Is the "new" meridional exterior already established, so as to allow a true line to be run back to the "opposite township corner"? If the "new" meridional line does not exist, how does one adjust it to the latitude of the opposite township corner?
Question #2: Section 3-26 also states, "But where both meridional boundaries have been previously surveyed, a closing township corner is established at the point of intersection of the random latitudinal line with the meridional boundary, or its projection to the north or south as the case may be." Does this mean you could have a "closing corner" on a meridional line? If this was the case, one corner would control the sections on the west of the meridional line, while the other would control those sections on the west?
One More.....
Question #3: Section 3-27 states, "A random meridional boundary is made the true line if the falling plus the correction for parallelism of the meridional subdivisional lines would result in calculated bearings in excess of 14'." What does this mean? What is the "correction of parallelism" mentioned here? Does it have something to do with the convergence on the meridional lines as they move north?
Thanks for all of your help.
I appreciate the opportunity to benefit from others experience.
The Sunburned Surveyor
I had 2 more questions on the BLM Manual, if you have time to respond. I appreciate all the answers.
Both of my questions are on sections under the heading "Allowable Deviation in Bearing" in Chapter #3.
Question #1: Section 3-26 states, "Where a random latitudinal boundary closes on a new meridional exterior, the temporary township corner is adjusted to the latitude of the opposite township corner." How is this done? Is the "new" meridional exterior already established, so as to allow a true line to be run back to the "opposite township corner"? If the "new" meridional line does not exist, how does one adjust it to the latitude of the opposite township corner?
Question #2: Section 3-26 also states, "But where both meridional boundaries have been previously surveyed, a closing township corner is established at the point of intersection of the random latitudinal line with the meridional boundary, or its projection to the north or south as the case may be." Does this mean you could have a "closing corner" on a meridional line? If this was the case, one corner would control the sections on the west of the meridional line, while the other would control those sections on the west?
One More.....
Question #3: Section 3-27 states, "A random meridional boundary is made the true line if the falling plus the correction for parallelism of the meridional subdivisional lines would result in calculated bearings in excess of 14'." What does this mean? What is the "correction of parallelism" mentioned here? Does it have something to do with the convergence on the meridional lines as they move north?
Thanks for all of your help.
I appreciate the opportunity to benefit from others experience.
The Sunburned Surveyor