Setting Benchmarks and Control
Services: Setting Benchmarks and Control
What is Benchmark and Control Establishment?
Benchmarks are defined points on a site, designated by artificial monumentation, that serve as the base point for elevation consistency, while control points ensure spatial accuracy across all phases of construction. These serve as the foundation for all future surveying, construction layout, and elevation-based measurements that will be performed throughout the lifetime of the project.
Why Do You Need Benchmarks and Control?
Setting benchmarks and control essentially establishes horizontal and vertical reference points on a project site. Establishing benchmarks and control early in the project ensures all crews and contractors are working from a common, accurate reference. This is especially critical in areas with strict flood plain regulations where vertical accuracy impacts drainage, grading, and structural design elevations.
Key Components of Benchmark and Control Surveys
From geodetic tie-ins to comprehensive control documentation
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Geodetic Tie-In:
Surveyors establish site control by referencing known published geodetic monuments and datums (such as NAVD 88 or NGVD 29).
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Horizontal and Vertical Control Setup:
Surveyors install semi-permanent and well-marked control points and benchmarks throughout the site to serve as reference locations for ongoing layout and elevation verification.
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Documentation and Certification:
CAD team prepares control documentation showing coordinates, elevations, and datum references, which is essential for mass grading and clearing contractors, as well as engineering records and municipal submittals.
How to Request Benchmark and Control Services from Atlas Surveying
To request benchmark and control services, please provide the following:
Project location and Civil Design plans
Site access instructions or limitations
Contact information for project authorization and billing, any pre-contract requirements
Why Choose Atlas Surveying for Benchmark and Control Services?
Atlas Surveying understands the importance of accurate site control as the foundation of any successful construction project. Our crews are trained to establish reliable, traceable control networks with precision, and our knowledge of coastal datums helps clients avoid elevation-related pitfalls. With advanced equipment and field-tested procedures, we help projects start on solid ground—literally and figuratively.
Contact Atlas Surveying today to schedule benchmark and control services tailored to your site and project needs.
Frequently Asked Questions
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