From geometry to a fabrication-ready rebar barlist in seconds.
CNSTRUCT turns structure dimensions into a complete Caltrans-standard barlist: bar marks, sizes, quantities, cut lengths, bend types, and leg dimensions. A deterministic engine: the same inputs always produce the same barlist.
- Deterministic engine, with AI reasoning
- Implements Caltrans Standard Plans
- Fabrication-ready output
- Pipe Ø
- 36 in
- Wall height H
- 5'-0"
- Wall thickness T
- 10 in
- Earth cover
- 10 ft
| Mark | Size | Qty | Length | Bend | A | B | D |
|---|---|---|---|---|---|---|---|
| VW | #5 | 18 | 6'-7" | 2 | 60" | 12" | |
| CB | #5 | 24 | 8'-9" | 11 | 80" | 12" | 14" |
| WH | #5 | 14 | 9'-4" | Str | |||
| TF | #4 | 12 | 4'-2" | 2 | 38" | 9" | |
| LI | #5 | 16 | 5'-1" | 11 | 44" | 12" | 14" |
| PV | #5 | 8 | 7'-0" | 2 | 66" | 12" |
Representative output. Every leg dimension is computed from the governing standard-plan formulas.
Implements the Caltrans Standard Plans
Rebar detailing is slow, exacting, and hard to scale.
Hours, not minutes
A single structure's barlist is taken off by hand, bar by bar: repetitive, slow work that scales linearly with every job.
Unforgiving to get wrong
Bend deductions, hook extensions, and lap lengths leave no room for slips. One bad number changes a cut length and the steel is wrong.
Locked in a few heads
The know-how lives with a handful of specialists, so detailing capacity is hard to add and even harder to replace.
Hours of manual takeoff, replaced by three steps.
Rebar detailing is repetitive, formula-driven, and unforgiving of arithmetic slips. CNSTRUCT does the bar math the same way every time.
Enter the geometry
Pick a structure type and enter the dimensions you already have: pipe diameter, wall height, span, cover, slab thickness. Sensible defaults and live diagrams keep input fast.
The engine applies the standard plan
CNSTRUCT runs the governing Caltrans standard-plan formulas as deterministic rules (bend deductions, hook extensions, lap and spacing logic) to size and count every bar.
Export a fabrication-ready barlist
Get a complete barlist with marks, sizes, quantities, cut lengths, bend types, and leg dimensions, ready to export to CSV, XML, Excel, PDF.
18 structure types, and growing.
Each type implements its governing Caltrans standard-plan sheet as a tested rule set. New structures and DOT standards are added the same way.
supported templates
- HeadwallD89A / D89B
- L-HeadwallD89A / D89B
- Junction StructureD91A / D91B
- Box CulvertD80
- Double Box CulvertD81
- Wing WallD84 / D85
- G2 Expanded InletD73A
- G-Type Inlets (G1-G6)D74 / D75
- Retaining WallGeneral
- Flat Slab / Dual SlabGeneral
- Spread FootingGeneral
- Pipe EncasementGeneral
- CollarGeneral
- Concrete HeaderGeneral
- Equipment PadGeneral
- Slab on GradeGeneral
- Sound WallGeneral
- SeatwallGeneral
Detailing you can hand straight to the shop.
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Built on the standard plans
Each structure encodes its governing Caltrans standard-plan sheet (bend deductions, hook extensions, lap and spacing logic) as a tested rule set, not a spreadsheet someone forgot to update.
Complete, fabrication-ready output
Every bar comes with its mark, size, quantity, cut length, bend type, and leg dimensions, and exports straight to CSV, XML, Excel, or PDF for the shop.
Built by people who detail rebar
CNSTRUCT comes out of real Caltrans rebar detailing at Vista Steel. The rule sets encode how the work is actually done and are checked against real barlists, so the output reflects shop practice, not a generic estimate.
A wedge into a market that still runs on spreadsheets.
Every cast-in-place concrete structure on a public-works job needs a rebar barlist, and most are still produced by hand by a small number of specialists. CNSTRUCT turns that specialized, error-prone work into software, starting with California's Caltrans standard plans as a deep, defensible beachhead, then expanding state by state.
Caltrans standard plans
18 structure templates
Multi-DOT coverage
WSDOT · ODOT · TxDOT
PDF intake → barlist
Plan sheet to parametric model
Investing, partnering, or piloting CNSTRUCT on a project?
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Caltrans-standard barlists · built by Vista Steel