The job site has a primary vertical control point with a reference benchmark of 100 ft. An instrument is set up with an HI of 5.42 ft above the BM. A grade stake is set at an elevation of 96 ft. What is the height reading on the rod at the grade stake? - 9.42 ft - 4.00 ft - 1.42 ft - 5.42 ft

Fundamentals Of Construction Estimating
4th Edition
ISBN:9781337399395
Author:Pratt, David J.
Publisher:Pratt, David J.
Chapter4: Measuring Site Work, Excavation, And Piling
Section: Chapter Questions
Problem 11RQ
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The job site has a primary vertical control point with a reference benchmark of 100 ft. An instrument is set up with an HI of 5.42 ft above the BM. A grade stake is set at an elevation of 96 ft. What is the height reading on the rod at the grade stake?

- 9.42 ft
- 4.00 ft
- 1.42 ft
- 5.42 ft 
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