89. Which of the following statement is correct about Max. Road Gradient?
0) ‘Plain or rolling is 1 in 20
(i) Mountainous and steep terrain with elevation upto 3000 m is 1 in 25
(11) Elevation more than 3000 m is 1 in 30
(A) Only 0) ൯ Only (ii)
( Both (A) and (8) 0) Only ‏(نتق‎

90. Which is the sequence of reconnaissance survey to be conducted for a project from the given
statements?

(i) Aerial reconnaissance

(1) Study of topographical survey sheets

(iii) Ground reconnaissance

(A) ‏,رھ‎ (1) and (iii) ൯ 0) (1) and (ii)
(C) (0, (iii) and (0) (D) (ii), @ and Gii)

91. Which of the following type of error when occurred while reading a levelling staff against the
top or bottom hair instead of central hair?

൫ ‘Instrumental Error

(1) Errors in manipulation

(ii) Errors in reading staff

(A) Only 0) ൯ Only (ii)

(C) Only (iii) (D) Both (A) and (B)

92. Which of the following statement is/are correct about the uses of contour maps?
൫ 170 compute quantity of earth work required for a road project.

(1) To draw longitudinal section and cross section to ascertain the nature of the
ground in any desired direction.

(iii) To determine the capacity of the reservoirs.
(¢) Only 0) and (ii) ൯ 0715 (ii) and (iii)
)© All of these above (i), (ii) and (iii) (D) Only ©) and (ii)

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