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FEMA US&R Response Sys/U.S. Army Corps of Engineers   
STRUCTURES SPECIALIST SKILLS TRAINING  

       October 2007 

TST – Total Station Training

Location Measurement In US&R 

Y (N)

 

BS 

MP (x,y,z) 

CP (x,y,z) 

X (E) 

IP (x,y,z) 

MP

 = Monitoring Point 

IP 

= Instrument Point 

CP

 = Control Point 

Current thinking for US&R is to set the X axis parallel to the side of the building 
facing the instrument and the Y axis perpendicular to the building.  To do this, a 
location on the structure is used to set the azimuth angle to 0

o

 (the instrument 

refers to the point used to set the azimuth as the back sight, 

BS

). The location 

must be chosen such that the 0

 o

 azimuth is perpendicular to the side of the 

building facing the instrument. 

If creating a new coordinate grid, give the new station widely different 
coordinates such as:  X = 1000.00  Y = 3000.00  Z = 5000.00  Significantly 
different coordinates are beneficial in the event that E, N, Z is mixed up with N, 
E, Z.  This difference helps the StS quickly translate a change in coordinates to 
a magnitude and direction of movement. 

Once established on a station, set several Control Points (

CP

): 

1.  They can be used as alternate instrument stations. 
2.  This allows options if some sites are blocked by equipment or if you need 

to set up the instrument at a new remote location. 

3.  This allows choices if reestablishing the grid from a new location not 

previously located by survey. 

  Measurement Basics and Theodolite Use   Page 5 

Содержание NPL-352

Страница 1: ...Classroom 45 minutes Session 1 2 Basic Field Set up and Theodolite Use Field 60 minutes Session 1 3 Initial Configuration and Basic EDM Use Classroom 60 minutes Session 1 4 Basic Field Use of the EDM Field 60 minutes Session 2 1 Advanced Use of Total Station Classroom 30 minutes Session 2 2 Advanced Use of Total Station Field 120 minutes Session 2 3 Use of Total Station for US R Classroom 30 minut...

Страница 2: ...easure horizontal and vertical angles 2 Total Stations combine theodolites with the ability to measure distance 3 Both can be used as simple point observation devices Angular Measurement Azimuth Azimuth Horizontal plane 0o 360 o is straight ahead 00 Angles are measured clockwise Azimuth Angle 00 Zenith Angle Zenith Zenith Vertical plane 0o is straight up usually Angles are measured down from verti...

Страница 3: ...tation axis to the prism focus SD the slope distance computed distance along the inclined line from the station point to the measured point the angle of the instrument relative to horizontal 90 o Zenith Angle HD the horizontal distance from the station point to the measured point VD the vertical distance from the station point to the measured point PC the prism constant obtained from the manufactu...

Страница 4: ...ts coordinates as N E Z N is Northing 0o on the azimuth E is Easting 90o to Northing Z is elevation above N E plane Z N E Total station can output coordinates as X Y Z but if the coordinate order is set to N E Z then X N Y E Z Z Z X N Y E This is different from the normal engineering convention Z To maintain the engineering convention the coordinate order should be set to E N Z so that Y N X E Y N...

Страница 5: ...t the 0 o azimuth is perpendicular to the side of the building facing the instrument If creating a new coordinate grid give the new station widely different coordinates such as X 1000 00 Y 3000 00 Z 5000 00 Significantly different coordinates are beneficial in the event that E N Z is mixed up with N E Z This difference helps the StS quickly translate a change in coordinates to a magnitude and dire...

Страница 6: ...transmits a timed pulse infrared signal and measures the time required for the pulse of infrared light to travel from the instrument to the target and back to determine distance A prism is not necessary however this technology has limited distance capability about 300 feet Tools Contained in the Case 1 Nikon NPL 352 2 Mini Prism Pole and Tips 3 Batteries and Charger 4 Power Inverter 5 Shoulder Str...

Страница 7: ...ace with the tangent screws Sighting Pointer Telescope Focus Ring Eyepiece Focus Ring Vertical Tangent Screw Plate Level Horizontal Tangent Screw Bulls eye Level Tangent screws are not endless Face 1 Face 2 of the instrument is with the optical plummet eyepiece Carrying Handle Battery Optical Plummet Plummet Focus Crosshair Focus Leveling Screws Face 2 Measurement Basics and Theodolite Use Page 7 ...

Страница 8: ...and S O keys are all 1 Second Keys We will address the alternate functions of the keys in a later section of this class Soft Keys The MSR1 MSR2 DSP and ANG keys perform additional functions when certain screens are displayed These keys are referred to by Nikon as Soft Keys For example in the Job Manager screen shown above pressing the MSR1 key would perform the function Creat displayed in the scre...

Страница 9: ...ve an age of the batteries for future replacement scheduling Marking one of the batteries that comes with the NPL 352 as the A battery and the other as the B battery makes it easier to track that the batteries are being cycled through the charger on a regular basis It is a good idea to have a spare lens cap in the box in case the one that comes with the machine gets lost Any 52mm standard camera l...

Страница 10: ...rument The first screen that comes up requires that the 0o zenith angle vertical reference be set This is done by simply tilting the telescope up and down slightly Current temperature and pressure can be set at this time also Tilting the telescope will bring up the basic measurement screens unless the instrument is not leveled within the tolerance range of the level compensators For classroom use ...

Страница 11: ... using the three leveling screws under the leveling base Again return to the BMS screen by using the ESC key and tilt the telescope to establish the zero zenith vertical angle Monitoring points with the theodolite is done by sighting on a point to be monitored and recording the horizontal angle HA and the vertical angle VA Several points can be monitored from a single location this way As long as ...

Страница 12: ...eld books with waterproof paper are recommended Once the HA and VA are known the points can be monitored by turning the telescope back to their last recorded location using the tangent screws of the instrument until the output screen of the instrument has the desired readings After returning the instrument to the prior recorded HA and VA settings the object is sighted through the telescope and mov...

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