For engineers, a calculation is only as good as its underlying assumptions. Usually, those assumptions live in a separate PDF file—a soil report, a manufacturer spec sheet, or a site inspection—forcing you to flip between windows to verify data.
The Problem: Fragmented Context
Static documents and dynamic calculations have traditionally lived in two different worlds. This fragmentation makes peer reviews difficult and increases the risk of manual data-entry errors.
The Solution: CalcTree PDF Viewer

We’ve integrated a native PDF viewer that turns static information into a functional part of your workspace.
- Side-by-Side Reference: Open a site report in a split-view panel alongside your live ACI 360R-10 slab design.
- Embedded Snippets: Identify a critical detail (like a rebar measurement or a post load) and drop that specific PDF section directly into your page as a reference block.
- Verified Evidence: By placing site photos and report data next to your design checks, you create a self-documenting page that is ready for immediate QA/QC.



