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Configure your building and let Qframe do the job.

Set the spans, frames, roof and gates in your browser. Qframe works out the structure, shows it in 3D and lists the quantities.

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No sign-up needed · Runs in your browser · Free to try

The default Qframe warehouse, 67 metres wide and 130 metres long, with eighteen frames on axes A to R and four spans between axes 1 and 5. Each span has its own single-pitch roof truss, sloping the other way from the next: eaves at +10.000 on axes 1, 3 and 5, high side at +13.000 on axes 2 and 4. The drawing shows the columns, the roof trusses and the bracing, with the grid axes, the overall dimensions 67 000 and 130 000 and the two levels.

Every bid costs money, and early numbers are rough

  • Win or lose

    the bid work is paid for

    A typical project has 5 bidders, and only one firm gets the contract

  • −30% / +50%

    is how far off a concept-stage cost estimate can be

    Little of the design is defined yet

  • +1 option

    means the work starts over

    Comparing variants is a struggle, so alternatives often go unexplored

Sources: median of five bidders per project: Constructing Excellence, UK bid cost survey (2014 data). Estimate range: Alberta Infrastructure, Classes of Construction Cost Estimates (2025, after ASTM E2516), Class 5 estimate.

From a few inputs to a building and its quantities

  1. Qframe's parameters panel: spans 2*18000 16000 15000, frames 1*5000 15*8000 1*5000, and the column placement on the first and last frames.

    Configure

    Set the spans, frame spacing, heights and roof shape. Add wall and roof panels and gates.

  2. The default warehouse in Qframe's 3D view, without wall and roof panels: columns, roof trusses and bracing on grid axes 1 to 5 and A to R.

    See the structure

    Qframe builds the 3D structure and a simplified first sizing of the members, right away.

  3. Qframe's quantities table: category, tag, profile, count, total length and weight, for example 48 columns RHS 300x200x10, 511.5 m, 37.19 t.

    Take off

    Get quantities and a bill of materials from the same model. Change an input and they update.

Engineering geometry, not a picture

Change one thing, and the whole frame follows

Qframe’s engine was built by structural engineers. Every change is worked out again for the whole frame: member positions, first sizing and quantities.

  • Columns, trusses, bracing and panels in one model
  • Quantities come from the same model as the 3D view
  • Every value is a parameter you can change
Roof shape
Number of spans
4

One main frame: 4 spans (18 + 18 + 16 + 15 m), monopitch, alternated roof, eaves +10.000, high side +13.000, ground ±0.000. Columns on every axis carry one roof truss per span.

4 spans, 67 m wide, 5 columns and 4 roof trusses in each main frame

Cross-section: spans 18 + 18 + 16 + 15 m, monopitch, alternated roof, eaves +10.000 and high side +13.000. Every value is a parameter you can change.

Open this in the demo (opens in a new tab)

Cross-section preview. Geometry only; the demo adds the 3D model and quantities.

Who it is for

Contractors

Start an estimate from quantities taken from a real structural model, not from rules of thumb.

Steel fabricators

Check spans, frame spacing and member sizes for an enquiry, and see the quantities behind them.

Building owners

See what your building could look like and what goes into it before the first meeting.

Designers

Begin from a frame that already makes structural sense, then develop it.

Help us choose what comes next

Tell us which of these would help you most.

Tell us what you need

Pick one or more.

Try it on your own building.

Qframe runs in the browser. Nothing to install.

Try the demo (opens in a new tab) Join the waiting list