Engineering decisions for monolithic concrete works in Czech and Slovak markets. Approximate calculation — but very accurate. Built by a working construction estimator.
Classify tender items into custom groups for supplier RFQs and internal departments. AI suggests codes from the description — always with probability, never with 100% certainty, always to be reviewed.
Pour stages, resources, crew composition, schedule. Formwork, reinforcement, concrete works — at single-element or whole-object scope. TOV resource breakdown.
Overview across all objects and budgets. Tenders split into groups, ready for supplier RFQs. Built-in calculators for concrete pump (multi-supplier formulas), delivery, and crane.
Bridge elements (piers, abutments, decks, cornices), prestressing, pour stages. Czech norms ČSN EN 13670, ŘSD specifications, OTSKP classification — proof of domain authenticity.
Three connected tools for the entire estimator workflow.
AI classification of tender items. Upload bill of quantities (xlsx), paste one description, or upload documents (PDF, DWG) — the system finds OTSKP candidates and suggests codes with probability. Never with 100% certainty — always for user review.
Split a tender into your own groups for supplier RFQs and internal departments. For each item, a TOV breakdown: people, machinery, materials. Built-in calculators for concrete pump, delivery, and crane.
Calculate concrete, formwork, reinforcement, pour stages and resources. Two modes: single-element detail or whole-object plan — both with schedule and Kč/m³ cost.
Technical reports (TZ), structural design, geology, drawings. Cross-document checks: geology → structural → tender. AI extracts key parameters and compares with other documents in the project.
Standalone lookup tool. Paste a bill of quantities (xlsx), a single item, or upload a document (PDF, DWG) — AI suggests OTSKP codes with probability. Always for user review, never with 100% certainty. Output: Excel, CSV.
Tender workshop. Import your bill of quantities (xlsx), split into custom groups for supplier RFQs and departments. TOV — every work item broken down into people, machinery, materials. Built-in calculators for concrete pump, delivery, and crane.
Single-element detail and whole-object plan — concrete, formwork, reinforcement, pour stages, schedule. Resource map (crews, curing time, formwork strike time) available as export for import into TOV in Registr.
Excel from each module for suppliers and departments. Hyperlinks back to source file preserved. Price and schedule ready for RFQ.
Concrete grades C25/30, ČSN norms, dimensions, thicknesses — exact extraction without AI.
17 904 items with verified codes, descriptions and units.
Gemini Flash + Claude only when regex and DB find no match. Never 100% — always to be reviewed.
Every result carries a confidence score. You always know what is a deterministic calculation (100%) and what is an AI suggestion (60–85%). No hidden hallucinations — just transparent calculation with an audit trail.
Two real cases: a public ŘSD tender and an anonymized project from portfolio.
Deck volume: ~ 350 m³ Formwork area: ~ 1 210 m² Falsework: Top 50 (girder system) Props: Staxo 40 (h < 8 m) Curing: 9 d (XF2 class 4, 15–25 °C) Prestress: 7 d wait + 2 d stressing + 2 d grouting Piles: 122 ks, C30/37 XA2
Volume: 94.231 m³ Formwork area: 547.4 m² Reinforcement: 5.654 t (D12) Pour stages: 8 segments × 19.5 m Formwork system: Framax Xlife (frame) Crew: 4 workers + 2 pumps Schedule: 12 working days
This calculator provides an approximate estimate for budget preparation with typical accuracy ±10–15%. The final detailed design, structural calculation and exact component specification are always performed by the formwork supplier (DOKA / PERI / ULMA / others) based on specific project documentation. For the tender phase and preliminary calculation, this accuracy is sufficient.
Calculator boundaries. What the supplier (DOKA / PERI / ULMA) owns, and what we own.
For detailed structural design, load calculations and approval documentation → DOKA / PERI / ULMA design teams.
It is a complementary tool — it prepares the materials for discussion with the engineering team, it does not replace them.
The calculator computes main systems and consumable percentages; specific screws, anchors, custom adapters are handled by the supplier.
The final price comes from the supplier’s structural design + current price list + project documentation. The calculator provides an approximate estimate for the tender phase.
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