SERVICES > Vertical Control
Vertical Control
Vertical control establishes a network of precisely measured benchmarks that serve as the elevation reference for all grade-sensitive work across a development or construction project.
In land surveying, vertical control ties topographic and drainage deliverables to NAVD 88 or project datum; in commercial construction, it governs formwork, structural steel, and MEP installations that must meet strict elevation tolerances. A well-established vertical control network eliminates the elevation errors that cascade into drainage failures, structural misalignments, and regulatory non-compliance. Allen & Company’s survey crews establish and verify benchmark networks using high-order leveling procedures and digital levels, providing engineers, contractors, and designers with the elevation confidence they need from first site work through final inspection.