Construction staking places physical references for the work a contractor is about to build. The marks change with the task: clearing limits, utility offsets, foundation lines or curb grades. Schedule layout against the actual work sequence, using the current governing design.
Protect the references every phase uses
Horizontal and vertical control connect the plans to the site. Before layout starts, confirm the coordinate system, elevation datum and control the project will use. WSDOT’s surveying guidance provides a reference for roadway construction; the project’s own specifications establish its requirements.
Identify control points that excavation or traffic could disturb. If one is damaged, tell the surveyor before the next layout request. A crew should not have to discover that its reference has moved after arriving to stake the work.
Match the request to the construction activity
| Activity | Possible layout | Confirm before the visit |
|---|---|---|
| Clearing and rough grading | Limits, offsets, cut/fill references and slope information. | Which area is ready and where marks will survive the work. |
| Utilities and drainage | Structure positions, alignments, offsets and design elevations. | The current plan/profile and the contractor’s required labels and offsets. |
| Foundations and structures | Building corners, grids, footing or wall offsets and scoped specialty layout. | The governing architectural and structural files, tolerances and available working surfaces. |
| Curbs, pavement and site improvements | Alignments, grade breaks, ramps, walls and finish-grade references. | Installed conditions and any revised connections or elevations. |
These activities overlap. A phased site may have foundations under way in one area while utilities are being installed in another. Identify the building, work area and plan revision in each request so “stake the storm” cannot refer to two different assignments.
Schedule as-builts while the work is visible
As-built measurement is a separate task from staking, and it does not always come last. Underground installations may need to be measured before backfill. Building-location checks and finished-grade measurements occur at other points in the sequence.
Identify the required observations with the engineer, owner and reviewing agency before construction reaches those points. An end-of-project request cannot recover a concealed feature as readily as a timely field visit.
What to send with each staking request
- The precise element and work area to be marked.
- The current governing plans and digital files, with revisions identified.
- Requested offsets, labels and references.
- When the area will be accessible and ready.
- A site contact who can resolve field questions.
- Any disturbed control or existing marks that need checking.
When plans change, identify the affected stakes with the surveyor and contractor before relying on them. New drawings do not update old marks in the ground.
Terrane provides construction staking and construction as-built surveys. Scope both against the contractor’s sequence so the right information is available while it can still be used.
