For a proposed airport, which plans are typically produced during the survey and planning stage?
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AMaster plan
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BTopographic plan
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CGrading plan
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DDrainage plan
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EAll of the above
Answer
Correct Answer: All of the above
Explanation
Introduction / Context:Airport planning proceeds from site selection to detailed geometric design. Early surveys generate several drawings that guide earthworks, stormwater management, runway/taxiway siting, and long-term expansion.
Given Data / Assumptions:
- Greenfield or expansion project requiring comprehensive planning.
- Integration with regional land use and environmental constraints.
Concept / Approach:The master plan sets out long-term development. The topographic plan captures existing terrain and features. The grading plan defines proposed elevations and cut-fill. The drainage plan ensures runoff is safely conveyed, preventing ponding near pavements and protecting water quality.
Step-by-Step Solution:Master plan: land use, phasing, terminal/airside concepts.Topographic plan: contours, benchmarks, natural/man-made features.Grading plan: proposed levels, slopes, and earthwork quantities.Drainage plan: surface/ subsurface drainage, detention/retention provisions.
Verification / Alternative check:Airport design manuals list these as standard outputs before detailed airfield design (pavement thickness, lighting, navaids).
Why Other Options Are Wrong:
- Each single plan alone is insufficient; comprehensive planning needs all.
Common Pitfalls:
- Delaying drainage planning, leading to water hazards near runways.
- Not aligning grading with obstacle limitation surfaces.
Final Answer:All of the above