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220terms
38guides
16trades
15AI articles
28free tools
Featured interactive toolConcrete

Concrete calculator

Enter slab dimensions in feet and inches. The result includes a 10 percent waste factor.

Result with waste

10.9 yd³

Bare volume: 9.88 yd³

40 x 20 x (4 / 12) / 27 x 1.10

Ruh can measure this from your drawing set automatically.

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Footings, columns and bag counts
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Calculate · 28 free tools

Get the number, see the formula, then move on with the estimate.

  1. Concrete CalculatorSlabs, footings, and columns in cubic yards, with bag counts for small pours.
  2. Rebar CalculatorBar counts from grid spacing, plus weight and tons by bar size.
  3. Board Foot CalculatorLumber board feet and cost, with nominal sizes and the hardwood quarter system.
  4. Stud CalculatorStuds, plates, and sheathing for wall framing at 16 or 24 inch spacing.
  5. Decking CalculatorDeck boards, joists, and fasteners from deck dimensions and layout.
  6. Paint CalculatorGallons from wall area, coats, and coverage, with door and window deductions.
  7. Gravel CalculatorCubic yards and tons for paths and driveways, by material density.
  8. Asphalt CalculatorHot-mix tonnage from area and depth, with driveway build-up guidance.
  9. Drywall CalculatorBoard area, sheet count by size, metal stud and track, compound, tape, and screws.
  10. Masonry CalculatorCMU and brick counts after openings, plus mortar bags and grout.
  11. Steel Tonnage CalculatorLinear feet, pounds, and tons for W, HSS, and angle members, with a connection allowance.
  12. Conduit and Wire CalculatorCircuit count and homerun length to total conduit and conductor footage.
  13. Demolition Debris CalculatorIn-place quantities to loose cubic yards with swell, sized into dumpster pulls.
  14. Ductwork Weight CalculatorRectangular duct size, length, and gauge to square feet and pounds of galvanized.
  15. Glazing CalculatorOpenings from the window schedule to glass square feet and frame linear feet.
  16. Insulation CalculatorNet square feet to batt bundles and board count, with an R-value check.
  17. Landscape Material CalculatorBed area and depth to mulch or topsoil yards and bags, plus sod and seed.
  18. Plumbing Fixture Unit CalculatorFixture counts by type to total DFU and WSFU from IPC code tables.
  19. Markup & Margin CalculatorTurn direct cost into a bid with overhead and profit, and see the real margin.
  20. Cost per Sq Ft CalculatorConstruction cost per square foot for quick project-level comparisons.
  21. Concrete Slab Cost CalculatorPrice a slab pour: yards with waste, ready-mix dollars, and pump costs.
  22. House Cost CalculatorPlanning-level build cost range by size and quality tier, from public data.
  23. Bid Pipeline VelocityRevenue per day from bids out, hit ratio, contract value, and cycle time.
  24. Bid Price-Cut SimulatorWhat a price cut does to margin, and the hit ratio it takes to break even.
  25. Bid Go/No-Go ScorerScore a pursuit on eight weighted criteria before you spend estimating hours.
  26. Estimating ROI CalculatorHours a faster takeoff frees up, and the bids, jobs, and revenue they turn into.
  27. Unit ConverterConvert between sf, sy, cy, board feet, and roofing squares.
  28. Roof Pitch CalculatorPitch to slope factor and true roof area from the footprint.

Learn · 220 glossary terms + 15 AI articles

Glossary by category

Browse full glossary
Process and contract terms18Concrete and masonry15Envelope and finishes30Estimating concepts14MEP45Sitework35Steel and structural25Units of measure13Wood framing25

AI in construction

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AI in construction

AI agents in construction explained

An AI agent in construction is software that takes a goal, works through the steps on your own project documents, and hands back finished work for a person to approve, unlike a chatbot, which only answers questions. Agents apply to document-heavy tasks like reading specs, producing a takeoff, drafting an RFI, or assembling a report. The agent does the legwork while a human keeps judgment and sign-off at every step.

AI in construction

AI construction scheduling and lookaheads

AI construction scheduling tools read your CPM schedule, RFI log, change order log, and field reports to draft lookaheads, test sequencing options, and flag activities at risk before they slip. The AI does the assembly and surfaces conflicts; the planner keeps the logic, the means and methods, and the sign-off. Ruh runs in your own tenant on your own documents and returns drafts your team reviews.

Estimate · 38 guides + 16 trades

Estimating guides

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Software by trade

See all 16 trades
ConcreteDemolitionDrywallEarthworkElectricalFlooringFramingGlazingHVACInsulationLandscapeMasonryPaintingPlumbingRoofingStructural steel

Integrate · 6 integrations

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