Planning & EstimatingQuestion 552 of 700
Before starting sitework, the crew needs a consistent reference for all elevations across the project. Which practice BEST establishes this?
a.Measure heights from the top of the nearest fence each day
b.Use the finished floor of an adjacent building without verification
c.Estimate grades by eye and adjust later
d.Set a fixed benchmark and reference all elevations to that datum
Explanation
Establishing a permanent, protected benchmark and referencing every elevation to that single datum ensures footings, slabs, and drainage tie together accurately. Option a uses an unstable reference that can move. Option b assumes an unverified elevation. Option c invites cumulative error. A common datum prevents mismatched grades and costly rework.
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