FireCalc – Trapeze Supports

Trapeze Supports Calculator

Estimates trapeze loads and compares required section modulus against a small library of common pipe and angle members. All results are for preliminary checks only – confirm against NFPA 13 tables and manufacturer data.

Inputs

Project information

Project name

Project address

Designer / Company

Job number

Date

Notes

Mode

Pipe schedule

Pipe nominal size (in.)

Span between hangers

ft, centre-to-centre supports

Number of pipes on trapeze

Pipe weight (lb/ft per pipe)

Approximate weight of pipe (empty).

Include approximate water weight (≈5.2 lb/ft per pipe)

Safety factor on hanger reaction

Additional point load per hanger (lb)

Allowable bending stress for trapeze member (psi) Trapeze member (for “check” mode)

Results

Uniform load w–

Total load on trapeze W–

Load per hanger–

Design load per hanger–

Max bending moment M–

Required section modulus S–

Selected / suggested member–

Status–

Member library (sample)

–

Interpretation

–

Trapeze Supports Calculator

Inputs

Results

Member library (sample)

Interpretation

Trapeze sketch