The jobsite has a primary vertical control point with a reference (BM) of 100 feet. An instrument is set up with an HI of 9.76' above the BM. A grade stake is set at an elevation of 98.5'. What is the height reading on the rod for setting the receiver at?

The height reading on the rod is 11.26 ft

Explanation:

Given;

Benchmark of the vertical control point, BM = 100 ft

Height of instrument, HI = 100 ft + 9.76 ft = 109.76 ft

Height of stake, H = 98.5 ft

The height reading on the rod is the foresight reading, gotten by subtracting height of stake from height of instrument.

The height reading on the rod = HI - H

The height reading on the rod = 109.76 ft - 98.5 ft

The height reading on the rod = 11.26 ft

Therefore, the height reading on the rod for setting the receiver at an elevation of 98.5' is 11.26 ft

this is true

explanation:

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