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TST – Total Station Training TOTAL STATION USE FOR THE STRUCTURAL SPECIALIST October 13, 2007 Session 1-1 Basics of the NPL-352 and Theodolite Use Classroom - 45 minutes Session 1-2 Basic Field Set-up and Theodolite Use Field - 60 minutes Session 1-3...
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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 Session 1-1 Measurement Basics and Theodolite Use Basic Measurement Tools Theodolite vs. Total Station 1) Theodolites measure horizontal and vertical angles. 2) Total Stations combine theodolites with the ability to measure distance.
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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 Distance Measurement Prism Prism Instrument Constant Constant (PC) PT- B PT- A HI = the height of the instrument (vertical distance from station point at Point A to axis of telescope).
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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 3 Dimensions The conventional survey coordinate order is N E Z and the total station normally outputs coordinates as N, E, Z: N is Northing (0 on the azimuth) •...
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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) 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.
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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 Straps...
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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 The 2 Faces of the Nikon NPL-352 1) Face 1 of the instrument is the face with the tangent screws. Sighting Pointer...
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Certain keys have additional functions when pressed and held for one second or more. Nikon refers to these as 1 - Second Keys. The MSR, DAT, DSP, USR 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.
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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.
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Use of Total Station as Theodolite Theodolites are still valuable for monitoring structures. Total stations can be used as simple theodolites. This section shows how to start up the NPL-352 and use it as a theodolite. After leveling the instrument with the bull's-eye level, turn on the instrument.
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There are four BMS screens which are viewed in order by pressing the DSP key repeatedly. When the NPL-352 is used as a theodolite, only the first screen is needed. After leveling the instrument with the bull's-eye level, turning it on, and before tilting the telescope, the instrument may need to be fine leveled using the electronic angle compensators.
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It should be noted that the accuracy of a 5 second theodolite or total station is approximately 1/8" for a point 400 feet distant. Although the NPL-352 is rated as a 5 second machine, its performance is always better than this. This level of accuracy should be more than sufficient for the purposes of monitoring points in the US&R environment.
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