Engineering Calculators
🛠️ Improvements & Fixes
- Concrete Beam (ACI 318-19) 🇺🇸: Added support for varying stirrup spacing with separate support and mid-span zones based on support locations, replacing the single-value stirrup approach for more accurate shear reinforcement design.
- Combined Footing (IBC 2024) 🇺🇸: Added separate bar size inputs for top and bottom reinforcement in both X and Y axes, replacing the shared bar size input for more precise development length calculations.
Atlas Tube Connection Hub
🛠️ Improvements & Fixes
- Steel Connection Column Bracing (AISC 360-22) — Internal Double Gusset 🇺🇸: Extended Internal Double Gusset coverage to beam-to-gusset, beam capacity, and transverse shear limit states with per-gusset demand calculations.
- HSS Beam-to-HSS Moment Connections (AISC 360-22) 🇺🇸: Added two-sided beam input support with dual beam analysis paths and combined demand calculations.
- HSS-to-HSS Splice Connections 🇺🇸: Fixed weld axial stress calculations to properly account for compression and combined loading conditions.
- HSS Connections (CSA S16:19) 🇨🇦: Corrected the weld resistance factor from 0.75 to 0.67 per code requirements, affecting 24 presets.
- Concrete-Filled Moment Connections 🇺🇸: Enhanced end plate thickness checks and added weld force loading diagrams for HSS-to-HSS and HSS-to-WF connection configurations.
- Steel Connection Templates 🇺🇸 🇨🇦: Fixed upgrade mappings to prevent load data corruption when upgrading existing calculators to new versions.
- WF-to-HSS Moment Connections — 3D Diagrams 🇺🇸: Refreshed 3D diagrams with grouped bolt labels, improved angle plate information, and enhanced weld visibility based on Atlas Tube feedback.