RESIDENTIAL CALCULATIONS & REPORTS

Residential calculations.
Clearly worked through.

A focused engineering assignment deserves the same care as a full plan set. YCG helps owners and architects resolve specific civil calculation and report needs.

Discuss your project

Need a calculation, not a full redesign?

You may already have architectural plans and need supporting civil analysis, a drainage report, or a response to a particular review comment. We start with the question the calculation needs to answer and define a focused scope around it.

Common civil analysis assignments

  • Drainage and runoff calculations: comparison of existing and proposed site conditions, drainage areas, and runoff assumptions.
  • Stormwater storage and treatment analysis: evaluation of proposed facilities using project-specific design criteria and available site information.
  • Earthwork quantities: anticipated cut and fill based on existing and proposed grading surfaces.
  • Driveway profiles and slope checks: analysis of grades, transitions, and access constraints.
  • Fire-flow and water-supply analysis: evaluation using available hydrant test data, elevations, and agency criteria, where included in the agreed scope.

Reports that connect to the drawings.

Depending on the assignment, the deliverable may be a calculation sheet, a concise report, or calculations accompanied by plan updates. Inputs, assumptions, methods, and conclusions should be clear and consistent with the drawings submitted for review.

Looking for structural calculations?

If your request involves a retaining wall, foundation, beam, or another structural element, send the plans and the reviewer’s request. We can discuss whether the work fits our team and coordinate the appropriate structural professional. Structural work is confirmed separately from a civil drainage or grading assignment.

Send the actual review comment.

The agency’s wording, current drawings, survey, and any previous calculations help us understand exactly what needs to be resolved. A report based on incomplete or outdated information may need revision when the design changes.

Common questions

Can you take on a calculation-only job?

Yes, focused civil calculation and report assignments are welcome. We first review the available information and the requested deliverable to confirm the scope.

Can you reuse calculations from another property?

Site inputs and agency criteria must match the actual project. An earlier calculation can help explain the desired format, but its values and conclusions need a project-specific review.

Will a calculation guarantee permit approval?

No. We prepare work for the agreed scope and can respond to related comments. Final acceptance remains with the reviewing agency.

Your project deserves a thoughtful start.

Planning on a hillside, adding an ADU, or working through a civil review comment? Tell us where you are and what you need.

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