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Engineering Calculators

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🚀 New Features

  • Seismic Analysis (NBCC 2020) 🇨🇦: Now out of beta. Adds vertical seismic force distribution, a base shear limit indicator, and an optional Elastic Analysis block. Canadian Project Defaults now include seismic site parameters.
  • 🚧 NEW CALCULATOR COMING SOON Seismic Analysis (NBCC 2025) 🇨🇦: New beta calculator for the NBCC 2025 Equivalent Static Force Procedure, with updated low seismic hazard exemption logic, 15% snow load in seismic weight, and 2025 clause numbering.
  • Steel Base Plate (ACI 318-19 & AISC 360-22) 🇺🇸: Major expansion. Adds anchor tension checks (cantilever and pure-moment methods per AISC DG1), a fillet weld check for combined tension, shear, and moment, custom anchor layouts beyond 2×2, thin-concrete breakout factors, anchor shear redistribution, and biaxial bending interaction for both plate and anchors.
  • Cold-Formed Steel Stud / Column (AISI S100-16) 🇺🇸: Now supports lateral load design. Adds strong-axis flexure (lateral–torsional, local, and distortional buckling), combined axial-and-bending interaction, and short- and long-term deflection checks. Moment utilization appears in the design summary.
  • Seismic Analysis (ASCE 7-16) and Seismic Analysis (ASCE 7-22) 🇺🇸: Four new opt-in features (all default off): flexible diaphragm overstrength reduction, about 13 more SFRS systems per edition, an auto-calculated redundancy factor ρ with manual override, and optional 1.10× accidental torsion amplification.
  • Snow Loads (ASCE 7-16) and Snow Loads (ASCE 7-22) 🇺🇸: Lower-roof drift now shows separate leeward and windward pressures instead of one governing value. Added Section 7.7.2 adjacent-structure drift, with its own inputs, drift-height calculation, and pressure tables.
  • Pole Footing (IBC 2024 / IBC 2021) 🇺🇸: New Axial Capacity Mode selector under Soil Properties: End Bearing Only, Shaft Friction Only, or Combined per Geotechnical Report.

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🛠️ Improvements & Fixes

  • Steel Composite Beam (AISC 360-22) 🇺🇸: Composite Action now affects Moment Capacity – Composite for partial designs, Moment Capacity – Precomposite uses bare steel instead of copying the composite value, LTB now checks against the right stage’s governing moment, and force-equilibrium display errors are fixed.
  • Steel Base Plate (ACI 318-19 & AISC 360-22) 🇺🇸: Thread count now feeds into anchor tensile capacity. Fixed shear breakout branch order for welded and closely-spaced anchors, axial load double-counting when entered on both X and Y load tables (axial is now entered once), and axis swaps in plan and elevation diagrams. Legacy manual entries are preserved on upgrade.
  • Cold-Formed Steel Stud / Column (AISI S100-16) 🇺🇸: Corrected AISI reference citations, deflection span ratio now rejects zero, axial-bending and shear-bending checks are surfaced in the header, and reactions and dead load can now be linked into other calculators.
  • Seismic Analysis (NBCC 2020) 🇨🇦: Cleaned up the input layout, added code clause references to headings, and added Design Spectral Acceleration at Period to the results summary. No numeric changes.
  • Wind Loads (ASCE 7-22) 🇺🇸: Roof overhang uplift pressures now calculate correctly in individual effective area mode (previously blank).
  • Steel Base Plate (AISC 360-22) 🇺🇸: Pure-moment connections (zero axial, non-zero moment) no longer show plate thickness and anchor tension as zero. Now uses AISC DG1 Eq. 4-32.
  • Concrete Wall Footing: Fixed an “Unexpected error” when using mesh reinforcement (like trench mesh). Diagram labels now use mesh count and type instead of the hidden bar spacing input.
  • Beam and Rafter calculators (14 templates): Clearer wording on the Load Direction When Linking to Column widget, explaining axial (Ny) vs. lateral (Px) for inclined rafters. No calculation changes.

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Atlas Tube Connection Hub

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🚀 New Features

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🛠️ Improvements & Fixes

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Platform Improvements

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🚀 New Features

  • New sidebar (early preview): In the preview of the new layout, a persistent icon nav rail replaces the per-page sidebar, and a new collapsible project sidebar adds drag-and-drop sheet and group reordering, stale and failed sheet indicators, and faster project loads.
  • Assumptions button on embedded calculators: Embedded calculators now show an “Assumptions…” button in the toolbar when the template has assumptions defined, opening the same content as the regular calculator’s Sheet Details sidebar.

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🛠️ Improvements & Fixes

  • Upgrade page redirect loop: Users with urgent calculation upgrades no longer get stuck on the /upgrade page when navigating inside a project under the new layout.
  • New sidebar routing: Direct links to billing, organisation members, and new project creation now open in the new layout for members who have the preview enabled, with billing and user management going through the redesigned settings page.
  • Project sidebar and standards pages: The project sidebar stays pinned on long pages, standards code and clause pages render correctly with the new sidebar, and deleting a sheet reliably returns you to the project details page.
  • Solver outages no longer crash sheets: If a remote solver like USGS Design Maps is down, sheets stay interactive with a warning banner instead of showing a full-page error, so you can enter values manually.

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Calcs Builder

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🚀 New Features

  • Hidden badge on the canvas: Widgets marked hidden now show a light-blue “Hidden” badge directly on the canvas and internal preview, so you can spot them without opening each widget.