Welcome to BRAE 23701_Winter_2011

# One for the lab which is use of equipment it is on

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One for the Lab Which is use of equipment It is on the last day of regular class » Also are doing the last lab! Syllabus No Cell phone use During lecture While on the way out to the field In the field Not even to talk to your crew members On the way back from the field In the classroom Cell phone use consist of Talking on the phone Text messaging on the phone Having the phone ring Have the phone vibrate Syllabus Grades They are listed on the syllabus Your grade is based on your overall percent

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3 Syllabus Blackboard has Sample quizzes Lectures that use PowerPoint Hints for solving the homework Current Scores Sample Exams Link to our Engineering Surveying Web site Which shows basic use of Tape Level Total Station Carlson Explorer Surveying The art and science of Measurement Science involve the understanding of error and theory in measurement Art is the understanding of the most efficient methods for obtaining the measurements required BRAE 237 Surveying What I hope for you to get out of this class Understanding of basic measurement concepts Ability to use Automatic Level Total Station Survey Grade GPS Advanced Data Collector Knowledge of basic surveying computations Distance Measurement Distances are always Horizontal distance Either the distance is measured horizontally or the distance is reduced to the horizontal component What is our unit of measurement for distance? In this class the unit of measurement is the U.S. survey foot. 1 U.S. survey foot = 0.30480060966 meters 1 U.S. survey foot 0.30480060966 meters Different then the Standard foot » 1 Standard foot = 0.3048meters What is our sub units? Sub units are 1/10ths and 100ths of a foot No inches are used Error Theory Precision vs. Accuracy Accuracy Absolute relationship between the measured value and the true value Precision The quality of the repeatability of measurement Not Very Accurate or Precise Accurate but not precise Precise but not Accurate Accurate and Precise Error Measurement There are 3 types of Errors associated with measurement Blunders/Mistakes These are large errors that can only be resolved by re measurement Random Errors These are small errors
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