Explain the statements about the differential levelling, Civil Engineering

Assignment Help:

 

Explain the Statements about the Differential Levelling

I.  Bench mark (BM) - relatively permanent point of known elevation as indicated on the Contract drawings 

II. Back sight (BS) - a sight taken to the level rod held at a point of known elevation (either BM or TP)

III. Height of Instrument (HI) - the elevation of the line of sight of the telescope

IV. Foresight (FS) - a sight taken on any point to determine its elevation

 


Related Discussions:- Explain the statements about the differential levelling

Urban transport systems, Urban Transport Systems: Urban Transport P...

Urban Transport Systems: Urban Transport Problem Rapid urbanisation is taking place in India. The current urban population proportion of 28 per cent may reach 40 per

Dissimilarity in methods of compaction, Question Are there any dissimil...

Question Are there any dissimilarity in methods of compaction between clayey soil material and sandy material ? Answer The three key actions of compaction are static

Roads, how to calculate number of passes while compaction

how to calculate number of passes while compaction

Determine length of guide bunds, Q. Determine Length of guide bunds? Leng...

Q. Determine Length of guide bunds? Length of a guide bund has to be such that the flow approaching even from behind the guide bund would pass through the bridge with minimum obl

Sand cone test – suitable for all soils?, Q. Sand cone test – suitable for ...

Q. Sand cone test – suitable for all soils? Sand cone (replacement) test is generally carried out to determine the in-situ and compacted density of soils. This testing method i

What is the unit weight of water, In a pipette analysis, 0.5 N of dry soil ...

In a pipette analysis, 0.5 N of dry soil (fine fraction) of specific gravity 2.72 were mixed in water to form half a litre of uniform suspension. A pipette of 10 ml capacity was

Use scattered lighting for underwater inspection of bridge, Define Use of s...

Define Use of scattered lighting for Underwater inspection of Bridge In this arrangement, a very high powered, tight beam spot light (beam angle less than 10°) is used. The lam

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd