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# Answer to Question #263046 in Civil and Environmental Engineering for MJM

Question #263046

A stadia measurement was undertaken with a theodolite having an internal focusing

telescope and stadia interval factor of 98.8. When a backsight was taken on a turning

point whose elevation is 205.62 m, the rod interval observed was 1.94 m; and with the

horizontal hairs set at 1.50 m on the rod, the vertical angle reading was +13045’. For a

foresight to a control point, the rod intercept was 1.17 m; and with the horizontal hair

reading of 1.60 m on the rod, the vertical angle observed was -7018’. Determine the

elevation of the line of sight at the instrument point and the elevation of the point on

which the foresight was taken.

1
2021-11-15T11:11:56-0500

For no spilling of water, rise above the original water level is equal to fall below the original water level

Height of paraboloid of revolution,

where,

ω = Angular velocity

Calculations:

Given Data:

Diameter = 2 m

Height of Tank = 4 m

Depth of water = 1.5 m

So, Radius, R = 1 m

Rise above the original water level for no spilling = 4 - 1.5 = 2.5 m

As, Rise above level = Fall below level

So, Fall = 2.5 m

So, the total height of paraboloid = Rise + Fall = 2.5 + 2.5 = 5 m

Putting all that data in above equation, we get,

"5\n=\n\u03c9\n^2\n\u00d7\n1\n^2\n\/2\n\u00d7\n9.81"

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