Carpenter Red Seal Exam Prep · Question
Two offset stakes are driven at 2.0 m from the proposed edge of a concrete slab. The first stake is marked 'Cut 0.350 m' and the second stake, 5.0 m away, is marked 'Fill 0.150 m'. If the desired finished slab elevation is 102.500 m, what are the current ground elevations at both stakes?
For stake 1 (Cut 0.350 m), current ground elevation = desired slab elevation + cut = 102.500 m + 0.350 m = 102.850 m. For stake 2 (Fill 0.150 m), current ground
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Question: Two offset stakes are driven at 2.0 m from the proposed edge of a concrete slab. The first stake is marked 'Cut 0.350 m' and the second stake, 5.0 m away, is marked 'Fill 0.150 m'. If the desired finished slab elevation is 102.500 m, what are the current ground elevations at both stakes?
Answer options: ✅ 102.850 m and 102.350 m
- 102.150 m and 102.650 m
- 102.850 m and 102.650 m
- 102.150 m and 102.350 m
Correct answer: 102.850 m and 102.350 m
Explanation: For stake 1 (Cut 0.350 m), current ground elevation = desired slab elevation + cut = 102.500 m + 0.350 m = 102.850 m. For stake 2 (Fill 0.150 m), current ground elevation = desired slab elevation - fill = 102.500 m - 0.150 m = 102.350 m.
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