What tool connects BIM, schedule, cost and RFIs in one place?

The information gap between BIM, schedule, cost and RFIs is one of the oldest problems in construction. They live in separate tools, maintained by separate teams, with no common identifier. Reconciling them by hand — to answer a question like "what is the cost exposure of the open RFIs on Level 5 that are on the critical path?" — can take days of manual work.

Bildstak closes that gap with four layers:

• Federation. It connects to each source in place — no data copying, no warehouse. BIM via IFC, Speckle or Autodesk APS. Schedule via Primavera P6. Cost via SAP or Maconomy. RFIs via Procore or Aconex. Coordination via BCF. Documents, spreadsheets and custom APIs too.
• The join key. Every BIM element has an IFC GlobalID, a stable unique identifier. Bildstak indexes the whole project by it, so schedule activities, cost lines and RFIs that reference an element are linked to it automatically.
• Plain-English queries. An AI analyst interprets your question, queries the federated sources, and returns an answer with citations — you can see exactly which record in which system each figure came from.
• Purpose-built AEC modules. On top of the data layer: Claims Builder, cost-loaded schedule with EVM, RFI register, specification tracker, portfolio risk ranking and the Analyst — an autonomous agent that investigates cross-source risk without being prompted.

The result is a single place where you can see how the BIM, the programme, the cost ledger and the document trail interact — and ask questions of all four at once.