Field geometry studio for professional pipe calculations
Real-time rolling offset computations, fitting takeoff library with 90+ seeded cards, and PDF cut sheet generation. Offline-capable geometry engine built for plumbers, pipefitters, and precision remodelers.
Download OffsetFit Pipe Desk
Select your primary workflow to unlock field-specific reference data and optimized calculation templates
All calculations provided for educational geometry purposes. Local code and engineer specifications supersede app math.
Understanding the computational mechanics behind precision pipe geometry
OffsetFit Pipe Desk executes all trigonometric operations client-side using native iOS mathematical libraries. The rolling offset solver applies Pythagorean theorem across three-dimensional space, calculating hypotenuse travel length from user-supplied rise, set, and roll dimensions. Each input accepts imperial fractions down to 1/16 inch precision or decimal notation, with real-time unit conversion maintained throughout the calculation chain.
The embedded reference library contains dimensional specifications for 90+ fitting configurations across five material families. Each card stores nominal size, end-prep type, and manufacturer-typical takeout distances. The database indexes by material class and size range, enabling sub-second filtered retrieval. Users drilling into individual fittings access end-type classifications, angle families, and application notes drawn from trade-standard installation practices.
The cut list assembly engine maintains ordered arrays of straight stick segments and fitting objects. As users stack components, the system aggregates centerline dimensions, subtracts stored takeout values per fitting, and computes net required stick length. The stock planner module then bins calculated cuts against user-defined raw material lengths, outputting optimized stick allocation with waste remnant reporting. Final assemblies export to formatted PDF documents containing annotated diagrams, measurement tables, and jobsite note fields.
Specialized tools addressing distinct phases of pipe fabrication planning
Interactive diagram updates in real-time as you adjust rise, set, and roll inputs. System computes travel length, advance distance, and true fitting angle using three-dimensional geometric projection. Toggle between fraction and decimal notation instantly.
Two-dimensional offset calculations for standard lateral displacements. Input rise and set values to receive travel diagonal and fitting angle recommendations. Streamlined interface for common single-plane geometry challenges encountered in remodel scenarios.
Multi-line layout planner for coordinating adjacent pipe runs with matching offsets. Maintains consistent spacing parameters across parallel segments while calculating individual fitting requirements and cumulative material needs.
Stack unlimited straight sticks and fittings into named run assemblies. Engine auto-sums centerline dimensions, applies fitting-specific takeout deductions, and presents net stick length requirements. Reorder segments via drag interface or duplicate entire runs as reusable templates.
Define available raw material stick lengths then watch the system bin required cuts with minimal waste. Algorithm prioritizes efficient stock utilization while generating remnant inventory summary for scrap tracking and cost estimation.
Generate jobsite-ready cut sheets containing annotated geometry diagrams, measurement tables, fitting inventories, binned stick lists, and blank note lines. Share documents directly from iOS share sheet to field crews or project management systems.
How professional trades deploy OffsetFit across pre-fabrication and field installation phases
OffsetFit emerged from field observation of tradespersons manually calculating offsets using worn pocket references and iterative fitting adjustments. The application prioritizes computational accuracy and offline reliability over cloud synchronization or subscription monetization models.
By executing all mathematical operations on-device and storing fitting data locally, the tool remains functional in basement mechanical rooms, remote jobsites, and other network-challenged environments where professional pipe work frequently occurs. The absence of account requirements or usage tracking reflects respect for trade privacy and tool ownership expectations common among skilled construction professionals.
iOS 1.1.3 – Productivity Category – Offline-First Architecture – Approximately 45 MB
Download OffsetFit Pipe DeskRequires iOS-compatible device. Application provides educational geometry calculations only. Always verify against local building codes, engineer specifications, and manufacturer installation data. Not intended as certification or inspection tool. Updated 16.10.2026.