11csrc leveling to 20 southern ca cgps stations

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*11*CSRC LEVELING TO 20 SOUTHERN CA CGPS STATIONS *12*CSRC NAVD88 LEVELING TO CGPS SITE VTIS IN LOS ANGELES CO. *15*COLLIMATION CHECK TAKEN DAILY AND STORED INTERNALLY IN THE NA3003 AND *15*USED TO CORRECT EACH ROD READING. *15*THE FIELD HEIGHT DIFFERENCE FOR THE SECTION BETWEEN SSNS 7213 AND 7113 *15*WAS COMPUTED AS FOLLOWS-- *15* +0.2637 METER *15*= 0.2326 METER (MANUAL STEEL RULE MEASUREMENT FROM LEVELED ANTENNA *15* REFERENCE DIVOT (ARD) UP TO BOTTOM OF ADAPTOR (BOA)) *15*+ 0.0311 METER (MANUAL STEEL RULE MEASUREMENT FROM BOA UP TO BASE OF *15* PREAMP (BPA) = MEAN ADAPTOR HEIGHT) *15*THE FIELD HEIGHT DIFFERENCE FOR THE SECTION BETWEEN SSNS 7213(ARD)AND *15*7013(GRM) WAS COMPUTED AS FOLLOWS-- *15* +0.2554 METER *15*= 0.2326 METER (MANUAL STEEL RULE MEASUREMENT FROM LEVELED ANTENNA *15* REFERENCE DIVOT (ARD) UP TO BOTTOM OF ADAPTOR (BOA)) *15*+ 0.0311 METER (MANUAL STEEL RULE MEASUREMENT FROM BOA UP TO BASE OF *15* PREAMP (BPA) = MEAN ADAPTOR HEIGHT) Version 1.10 (October 28, 2004) Page 29 of 36 6/14/2018 2:20 AM
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*15*- 0.0083 METER (FROM BPA DOWN TO GEODETIC REFERENCE MARK (GRM), *15* CONSTANT BASED ON MACHINING SPECIFICATIONS OF *15* ADAPTOR). *40*03090324391716 39622962 39623219 153130 30 -.021T0738 *41*03090311132502T07380805F64.063.012 8 KM0.484MT 1.56716MSP *43*030903111325020738 -1.942 *41*03090325027013T08070957F63.070.002 40 KM1.121MT 51.45792MSP *43*030903250270130807 279.394 *41*03090370132502T10031124F70.066.012 40 KM1.123MT -51.45764MSP *43*030903701325021003 -283.362 *40*030903200RULE1 300RULE1 300RULE1 30 T1830 *41*03090372137113T1830 F64.064.002 1 MT0.001MT0.2637 MSP *43*030903721371131830 *40*030903200RULE1 300RULE1 300RULE1 30 T1840 *41*03090372137013T1840 F64.064.002 1 MT0.001MT0.2554 MSP *43*030903721370131840 The *15, 40, 41 and 43 records are edited to reflect the correct manual measurements and other site related data (point number, date, time, etc.). After these files are prepared correctly, the L266151.txt file is run through steps 7_WinMakefile.exe, 8_WinNewabs.exe and 9_Win Readfile.exe to create the hgz file, abs file and lst file for submittal to NGS. This process was run on all stations and resubmitted to NGS. In the future, these steps will be incorporated into the initial process for any level runs to CGPS sites that utilize manual measurements as performed for this project and delineated in this document. Version 1.10 (October 28, 2004) Page 30 of 36 6/14/2018 2:20 AM
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Appendix F - Leveling Input For NA3003 (as required for NGS Vertical Project Submission using Charles Whalen NABook program) Leica/Wild NAXXXX data recording code blocks for recording single-run, BF leveling to be processed with Whalen's NABOOK program. Do a collimation check at start of day & set the instrument to apply it. If error exceeds 10.0 (1st & 2nd Order) or 20.0 (3rd order) adjust instrument & reobserve collimation check. Code 1 - Beginning of day or change in observer/instrument/rods/or a new collimation check 1) Date (MMDDYY) 2) Observer's code number (1, 2, or 3, etc.) 3) Instrument type number (like 2000, 2002, 3000, 3003, etc.) 4) Temperature code ( 0 for C or 1 for F) Code 2 - Equipment used 1) Instrument serial number (like 90810) 2) Collimation error in seconds of arc (no decimal, like -58 for -5.8") 3) Rod 1 serial number (like 25458) 4) Rod 2 serial number (like 25534) Code 11 - Start of leveling section (Set point number to 1) 1) Time (HHMM, 24 hour local) 2) Rod on mark (1 or 2) 3) Temperature (no decimal, key 75 for 75.0 degrees, omit if recording temperatures for gradient) (Record SPSN as point number for first backsight of each section.) Code 22 - Reject previous backsight and foresight (No data entries) Code 33
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