Maria Ramirez, PE
Maria is a licensed civil engineer with 12+ years in residential foundations and flatwork. She reviews our concrete calculators for realistic yields, formwork, and reinforcement assumptions.
Concrete Footings Rebar
🏷️ Review Board
Our calculators are reviewed by independent subject-matter experts. Reviewers check formulas, defaults, and usability, and confirm that assumptions are clearly stated. Each reviewed calculator shows a badge with the reviewer’s name and last-reviewed date.
Review Policy
- Independence: Reviewers are independent practitioners; conflicts of interest are disclosed.
- Scope: Accuracy of math, suitability of defaults, clarity of instructions, and safe-use limitations.
- Cadence: At least annually, or sooner when standards/manufacturer data change.
- Change tracking: Significant updates are logged in our changelog
Dave Whitaker
Dave is a second-generation paving contractor focusing on asphalt compaction, lift thickness, and milling yields for driveways and small parking lots.
Asphalt Milling Compaction
Reviewed calculators
Sonia Cho
Sonia reviews our lighting and electrical tools, validating code-aligned spacing, fixture density, and power load calculations.
Lighting Electrical Code
Reviewed calculators
Caleb Wright
Caleb validates roofing calculations for shingle coverage, waste factors, and ventilation recommendations.
Roofing Takeoff Ventilation
Reviewed calculators
Natalie Green
Natalie reviews our paint-related calculators, ensuring coverage rates, coat counts, and product yield align with real-world results.
Paint Coverage Substrate Prep
Reviewed calculators
Liam Santos
Liam reviews our decking, lumber, and board foot calculators to confirm accurate framing takeoffs and lumber waste assumptions.
Decking Framing Stairs
Reviewed calculators
Interested in joining the Review Board?
We welcome experienced practitioners to contribute to public, transparent tools. Please share your credentials, areas of expertise, and sample projects or publications.
- Minimum 5 years field experience or relevant certification
- Willingness to disclose conflicts of interest
- Comfort with plain-English feedback and calculator testing
Contact us with the subject line “Reviewer Application”.