Build the storm drain structure takeoff review record
Build the structure list from plan callouts, profiles, schedules, and details. Record structure type, identifier, rim elevation, incoming and outgoing inverts, pipe sizes, and location.
Do not merge structures that share a symbol when their depths or tops differ. Use the earthwork takeoff as a related control, but keep this takeoff tied to its own drawing population and cost lines.
Check quantities and scope conditions
Check depth from the same vertical datum used by the documents. Review sumps, base slabs, adjustment rings, frames, grates, covers, steps, boots, and special coatings only where the drawings require them. Keep uncertain components as named assumptions.
AACE recommended practices provide general estimating references. The project documents and approved estimate basis control the actual quantity and scope decisions.
| Review field | Required record |
|---|---|
| Population | Location, type, and source |
| Quantity | Measured basis and unit |
| Interface | Included work and package owner |
| Disposition | Estimate treatment and reviewer |
Reconcile the estimate before release
Reconcile the structure count with every connected pipe segment and outfall. Then review excavation limits, dewatering basis, traffic control, pavement repair, and disposal as separate cost decisions rather than hiding them in the structure unit. Close open assignments through the civil quantity reconciliation guide and preserve the decision with the estimate revision.
