Why convert thickness before multiplying?
Length, width and thickness must use compatible units. Multiplying two dimensions in feet by a thickness still expressed in inches does not produce cubic feet. Write the conversion directly in the worksheet so a reviewer can see it. NIST lists 12 inches per foot and 27 cubic feet per cubic yard; the example uses those exact unit relationships.
What changes when the slab is not a rectangle?
Break the geometry into areas you can check and assign the correct depth to each one. Review depressions, steps, thickened edges, isolated pads and openings against the sections. Identify shared boundaries so the same volume is not counted twice. The simple example does not include any of these details, and it should not become a shortcut around reading them.
Why is net volume different from the order and bid?
The net volume is a geometric quantity. The order may reflect a project-specific allowance and delivery constraints, while the bid can include reinforcement, forms, access, placement equipment and finishing. Keep these layers separate. A supplier quote for concrete alone cannot establish an installed project cost, and an AI count cannot establish slab volume without reviewed dimensions.
What does CyanBuild software cost?
These are CyanBuild’s published software plans as checked on October 6, 2026. Each allowance is for PDF pages per month. You review the quantities; an outsourced takeoff service is a separate purchase.
| Plan | Monthly price | PDF pages / month |
|---|---|---|
| Free | $0 | 3 |
| Starter | $29 | 30 |
| Pro | $99 | 120 |
| Enterprise | $299 | 400 |
Paid subscriptions renew according to their terms. A page allowance does not guarantee the completeness of a takeoff, and unused capacity does not turn the subscription into a per-project service. Check current features and terms before choosing a plan.
What else should you check?
- How many cubic feet are in one cubic yard?
- There are exactly 27 cubic feet in one cubic yard. Divide a volume in cubic feet by 27 to express it in cubic yards.
- Does this example include reinforcement?
- No. Reinforcement must be taken from the structural details and scheduled separately. The example only demonstrates concrete volume arithmetic.
- Should I order exactly 4 cubic yards?
- The example is not a real project or order instruction. Determine actual geometry, review any allowance and confirm delivery requirements with the responsible project team.
Where do the figures and product facts come from?
Sources checked October 6, 2026. Published prices can change; verify the actual terms before purchasing. Worked examples on this page are labeled separately from published product or service facts.
- CyanBuild published plans
Monthly software prices and PDF page allowances. These are product terms, not market averages or outsourced service fees.
- NIST Handbook 44 (2026), Appendix C: units of measurement
Exact US customary unit conversions; it does not validate the example dimensions, waste, prices or a project design.
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