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State the difference between the Collimation System and Rise-and-Fall system in levelling? b)The following consecutive readings were taken with a dumpy level along a chain line at a common interval

State the difference between the Collimation System and Rise-and-Fall system in levelling?

b)The following consecutive readings were taken with a dumpy level along a chain line at a common interval of 15 m .The first reading was at a chainage of 165 m where the RL is 98.085. The instrument was shifted after the fourth and ninth readings.

3.150 , 2.245 , 1.125 , 0.860 , 3.125 , 2.7620 , 1.835 , 1.470 , 1.965 , 1.225 , 2.390 , and 3.035 m.

Mark rules on a page of your notebook in the form of a level book page and enter on it the above readings and find the RL of all the points by :-

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a) State the difference between the Collimation System and Rise-and-Fall system in levelling? b) The following consecutive readings were taken with a dumpy level along a chain line at a common interval of 15 m .The first reading was at a chainage of 165 m where the RL is 98.085. The instrument was shifted after the fourth and ninth readings. 3.150 , 2.245 , 1.125 , 0.860 , 3.125 , 2.7620 , 1.835 , 1.470 , 1.965 , 1.225 , 2.390 , and 3.035 m. Mark rules on a page of your notebook in the form of a level book page and enter on it the above readings and find the RL of all the points by :- The Collimation System and, Rise-and-Fall system,

May 24 2020 View more View Less

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