Free tools · evaluation use only

First principles, visible under every result.

Standalone calculators that share the engine's discipline — every output prints the working that produced it. No proprietary tabulations, no OEM lookups behind the curtain. Useful for individual learning, agent workflows, and colleague sharing. Not for tender or contract submission.

§ 01 · Available at launch

2 live · more shipping after v1 launch
  • Plant productivity

    ● Live

    First-principles excavator, articulated-dump-truck, dozer, and roller productivity — cycle-time, swing-factor, payload, fleet pairing.

    • Excavators · dump trucks · dozers · rollers
    • Volume conversions (bank → loose → compacted)
    • Workings printed under every result
  • Aggregate conversions

    ● Live

    Bulk-density conversions for 46 materials across sub-base, capping, MCHW earthworks fill classes, and pavement / drainage aggregates.

    • 46 materials · 17 cited public reference sources
    • Bank volume → tonnage → loose volume → tipper loads
    • Coverage by MCHW class for earthworks fill

§ 02 · Shipping after v1 launch

Not yet built · sequencing tracked in the spec
  • Roadmap

    Concrete cover + bar-bending schedules

    BS 8666:2020 reinforcement scheduling

  • Roadmap

    Pipe-flow capacity

    Manning's n + Colebrook–White for drainage runs

  • Roadmap

    Earthworks haul-distance

    Mass-haul diagrams + optimal cut/fill

Want the full engine?

46 parametric assemblies. Four standards.

The tools run alongside the main engine — same discipline, smaller scope. The engine itself produces full dimensioned drawings and audit-trail BoQs in your chosen measurement methodology.