Civil Engineering - Surveying - Discussion

5. 

The intercept of a staff

[A]. is maximum if the staff is held truly normal to the line of sight.
[B]. is minimum if the staff is held truly normal to the line of sight.
[C]. decreases if the staff is tilted away from normal
[D]. increases if the staff is tilted towards normal.

Answer: Option B

Explanation:

No answer description available for this question.

Aman said: (Feb 5, 2014)  
If staff is not vertical, the reading will be too great. If staff is normal to the line of sight the value will be minimum or accurate. It will not be maximum. The intercept of staff increases when it is tilted away from norman and decreases or gets minimum when moved towards normal.

Sai said: (Nov 12, 2014)  
What is intercept of staff?

Bujji said: (Jan 21, 2015)  
What is staff?

Charsu Beas said: (Mar 17, 2015)  
Staff is a leveling instrument on which reading is taken in the form of RL.

Vikram Thakur said: (Apr 29, 2015)  
What about intercept?

Jeevitha said: (May 4, 2015)  
Intercept of staff is the distance between top and bottom staff reading.

Sipho said: (May 11, 2015)  
Where am I suppose to take the reading on the staff when I want the direction CL when using a theodolite.

Sadasivuni said: (Jul 19, 2015)  
Answer is C because the staff reading will decrease.

Ogunkoya Oluwaseyi said: (Nov 8, 2015)  
What is RL?

Pushpendra said: (Dec 3, 2015)  
RL is the Reduce Level, take when level rise and fall condition.

Mrgsh said: (Mar 3, 2016)  
Staff intercept is differ between length of top and bottom crosshair in the instrument (say S1 and S3). Google "tacheometry" and just see the image you'll get everything.

Saugata Pore said: (Jul 4, 2016)  
Why not an option D?

Asaa said: (Sep 20, 2016)  
Option D is incorrect because the intercept rather decreases if you tilt the staff towards making it normal to the line of sight.

Piyush said: (Sep 29, 2016)  
I think option D is also correct.

Ashish said: (Oct 1, 2016)  
That's a wrong answer.

It must lie at the center of the telescope.

Ravi Kumar said: (Oct 5, 2016)  
Answer B is right. Think again and visualise a laser beam as a line of sight and a objects going away from normal. The reading will increase as it starts from zero at bottom and max st top.

Revansiddappa said: (Oct 20, 2016)  
If staff is tilted then what is the answer?

Jwala said: (Oct 28, 2016)  
If the staff is tilted away I think value increase. Just visualise a staff with the inclination and straight.

Lokesh said: (Mar 1, 2017)  
How to define interception?

Ravi Kumar Sahu said: (Mar 7, 2017)  
Good explanations, thank you all.

Santhosh C said: (Mar 22, 2017)  
If the staff is tilted away from the instrument intercept will be more n if staff is tilted towards the instrument the staff intercept will be minimum.

Pankaj Yadav said: (Apr 7, 2017)  
I think in both condition, value increase if staff tilted.

Sahil said: (Apr 12, 2017)  
Since, staff is held inclined, cross hairs will intercept more readings than that of a vertically held staff in vertical direction.

Mohanraj said: (Aug 7, 2017)  
Which is the correct answer? tell correctly.

Suraj said: (Oct 9, 2017)  
According to definition, only answer B is correct.

Nitesh said: (Nov 11, 2017)  
Staff intercept: is the difference between the reading measured at top cross hair and bottom cross hair of telescope.

Waqar said: (Dec 30, 2017)  
Thanks @Aman and @Jeevitha.

Sumon Paul said: (Apr 2, 2018)  
Reading will increase in both cases, if tilted away or towards. Because it's minimum when staff held normal. So you can't go below the minimum. So answer D is also correct but B is more logical.

Neha said: (Jan 22, 2019)  
What is the intercept of staff?

Diya said: (Jul 18, 2019)  
Staff intercept is the difference in reading between top and bottom cross hairs. If the staff is tilted forward or backward from normal, the staff intercept will increase. It is minimum when staff is truly vertical.

Rj Vishwas said: (Dec 31, 2019)  
When telescope pointing down, then tell me what will happen if we move a vertical staff?

Prit said: (Jul 26, 2020)  
If staff is not vertical, the reading will be too great. If staff is normal to the line of sight the value will be minimum or accurate. It will not be maximum. The intercept of staff increases when it is tilted away from normal and decreases or gets minimum when moved towards normal.

Saipoojith said: (Aug 22, 2020)  
Thanks all for explaining the answer.

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