BeamCap

Overview

BeamCap instantly calculates a beam’s load-carrying capacity based on span (L), section, and material. It combines classical strength formulas, support/load selections, and an optional data-driven predictor to deliver allowable loads and deflection checks in seconds.

Core Features

• Capacity (ULS): Allowable uniform load (w_allow) and point load (P_allow) from design bending resistance (M_Rd)
• Serviceability (SLS): Midspan deflection using E–I with user-defined limits (e.g., L/200, L/300)
• Section Library: IPE series and custom input by geometric properties (A, I, W/Z)
• Supports & Loads: Simply supported or fixed; uniform distributed load (UDL) and midspan point load
• Quick Charts: Capacity–Span curve, utilization indicator, deflection plot
• Reporting: Export PDF/CSV, save result images (PNG) and shareable links
• Interface: Minimal inputs, instant results

Inputs

Outputs

• w_allow (kN/m) and/or P_allow (kN)
• Max bending/shear and utilization ratio
• Deflection (mm) and limit check
• Capacity–Span chart, report (PDF/CSV), and screenshot (PNG)

Target Users

• Structural/steel design engineers
• Manufacturers & rack system design teams
• Faculty and students

Use Cases

• Rack beams, platform/service beams, secondary floor beams
• Early-stage sizing and quick feasibility checks
• Education/demonstration for capacity–span sensitivity

How It Works (Summary)

Design bending resistance: M_Rd = (fy * W) / γ_M

Simply supported with UDL: M_max = w * L^2 / 8 ⇒ w_allow = 8 * M_Rd / L^2

Simply supported with midspan point load: M_max = P * L / 4 ⇒ P_allow = 4 * M_Rd / L

Deflection (UDL): δ = 5 * w * L^4 / (384 * E * I) (checked against limit)

Note: Default formulas are for guidance only; codes and project-specific criteria remain the user’s responsibility.