IN ANSWERING QUESTIONS 12-27 AND 12-28, YOU
ARE SETTING GRADE STAKES BY THE PROCEDURE
THAT INVOLVES COMPLETING THE NECESSARY
COMPUTATIONS WHILE AT EACH STATION.
12-27.
You can obtain the grade rod by
taking the difference between what
two measurements?
1.
The HI and the ground
elevation
2.
The HI and the finished grade
3.
The finished grade and the
ground elevation
4.
The width of the highway and
the width of the fill or cut
12-28.
You can obtain the amount of cut or
fill for a given station by
computing the sum of or difference
between what two measurements?
1.
The HI and the finished grade
2.
The ground elevation and the
ground rod
3.
The ground rod and the grade
rod
4.
The HI and the ground rod
IN ANSWERING QUESTIONS 12-29 AND 12-30, YOU
ARE SETTING A CENTERLINE GRADE STAKE AT A
STATION WHERE THE EXISTING GROUND ELEVATION
IS 98.6 FEET AND THE REQUIRED ELEVATION IS
110.3 FEET.
12-29.
At this station, you obtain a
reading of 6.3 feet.
What is the
(a) grade rod and (b) ground rod?
1.
(a)
6.3 (b) 104.9
2.
(a)
5.4 (b) 6.3
3.
(a)
6.3 (b) 5.4
4.
(a) 104.9 (b) 5.4
12-30.
What information should you mark
the front of the grade stake?
4
1.
C 5— and the station number
2. F 6s
and the station number
3.
%
and the station number
.
4.
F llL
and the station number
12-31.
What is the slope stake distance
from the center line if W/2 . 18
feet, h = 6 feet, and the slope
ratio is 2:1?
1.
21 ft
2.
24 ft
3.
30 ft
4.
42 ft
on
QUESTIONS 12-32 AND 12-33 PERTAIN TO THE
SETTING OF SLOPE STAKES FOR A CUT SECTION.
THE DISTANCE FROM THE CENTER LINE TO THE
BEGINNING OF THE SIDE SLOPE IS 22 FEET.
THERE IS A CROSSFALL OF 0.5 FEET AND A
DITCH 2 1/2 FEET IN DEPTH.
THE SIDE SLOPE
AND BACK SLOPE RATIO IS 3:1, AND h IS 8
FEET.
12-32.
What is the value of W/2?
1.
7.5 ft
2.
22.0 ft
3.
29.5 ft
4.
38.5 ft
12-33.
What is the slope stake distance
from the center line?
1.
24.0 ft
2.
29.0 ft
3.
44.0 ft
4.
62.5 ft
85
