Types of Benchmark in Surveying || G T S Benchmark, Permanent Benchmark, Temporary Benchmark etc.. скачать в хорошем качестве

Types of Benchmark in Surveying || G T S Benchmark, Permanent Benchmark, Temporary Benchmark etc..

Benchmarks in Surveying: Types & Importance | Surveying (Lec-15) ​Welcome back to CIVIL GYAN CENTER! In any levelling work, the most critical step is starting from a point of known elevation. That reference point is called a Benchmark (BM). ​In this video, we discuss the four primary types of Benchmarks used in India, from the highly precise GTS benchmarks to the flexible arbitrary ones. This topic is a favorite for "Direct Statement" questions in SSC JE and RRB JE exams. ​📌 What is a Benchmark? ​A Benchmark is a relatively permanent point of reference whose elevation with respect to a specific datum (usually Mean Sea Level) is known. ​📌 Types of Benchmarks Covered: ​GTS (Great Trigonometrical Survey) Benchmark: ​Established by the Survey of India. ​The highest precision benchmarks located all over the country. ​Permanent Benchmark: ​Established by government agencies like PWD, Railways, or Irrigation departments. ​These are fixed on permanent structures like bridges, culverts, or plinths of government buildings. ​Temporary Benchmark (TBM): ​Established at the end of a day's work so that levelling can be resumed the next morning from the same spot. ​Usually marked on a well-defined point like a kilometer stone or a firm rock. ​Arbitrary Benchmark: ​Used in small survey projects where the actual RL (Reduced Level) is not known. ​An elevation (like 100.00 m) is assumed for a convenient starting point. ​⏱️ Video Timestamps: ​Introduction: What is a Benchmark? GTS Benchmark (Role of Survey of India) Permanent Benchmarks in Engineering Projects Temporary Benchmarks: Usage in Daily Fieldwork Arbitrary Benchmarks for Small Sites How to choose a Benchmark? Important PYQs from State AE/JE Exams ​🚀 Target Exams: ​​​​​​✅ ESE (Engineering Services Examination) ✅ SSC JE (Civil) ✅ RRB JE ✅ UPPSC Polytechnic Lecturer ✅ State AE/JE Exams ✅ GATE Civil Engineering ​🚀 About CIVIL GYAN CENTER: ​​​​​​We provide simplified, conceptual, and exam-oriented content for Civil Engineering aspirants. Let's build your career together with strong technical foundations! ​Join us for More ​Youtube link    / @civilgyancenter   ​Telegram Channel https://t.me/civilgyancenter ​Instagram Channel   / civilgyancenter   ​WhatsApp Channel https://chat.whatsapp.com/CtGQ9vqwqwh... ​#CivilEngineering #Surveying #Benchmarks #GTS #SSCJE #RRBJE #CivilGyanCenter #EngineeringConcepts #SurveyingLectures #UPPSCLecturer