Two Engineering Domains
The application is organized around two principal domains, accessible from the sidebar:Pressure Elements
Design and analyze supports for pressure vessels — horizontal, vertical column, and spherical geometries. Includes saddle, skirt, leg, lug, and ring support types, each with dedicated parameter forms and result dashboards.
Structural Elements
Analyze beams and perform weld design and analysis. Covers common structural profiles with code-compliant stress checks for industrial and petrochemical plant structures.
Pressure Vessel Support Types
PSI covers all standard support configurations used in the process industry:| Support | Typical Vessel | Key Parameters |
|---|---|---|
| Saddle | Horizontal | Height, location, contact angle (120°/150°), web thickness, base plate, rib count |
| Skirt | Columna vertical | Height, thickness, base diameter, cylindrical or conical geometry, anchor bolts, anchor chairs |
| Legs (unbraced) | Spherical, Vertical | Quantity (3/4/6/8), profile (Rectangular/Angle/Tube), length, bolt circle |
| Legs (braced) | Spherical, Vertical | Profiles (Angle L, Beam W/I, Pipe, Square Tube HSS), brace profile, bracing tiers |
| Lug | Vertical, Spherical | Quantity, elevation, dimensions, eccentricity, optional gusset and pad plate |
| Ring | Horizontal, Vertical | Profile type A/B, OD/ID, web and flange dimensions, optional gussets, bolt circle |
Material Library
Vessel material is selected per calculation and feeds directly into allowable stress lookups:- Carbon steel
- Stainless steel 304
- Stainless steel 316
- Alloy steel
/basic-tables and /data-tables respectively, covering the full range of allowable stresses by temperature.
Engineering Code Compliance
PSI supports two seismic design code families, selectable per project:ASME / ASCE
Site class A through F, mapped spectral accelerations Ss and S1, and response modification factor R. Applicable to US-based projects and international projects adopting ASCE 7.
COVENIN
Venezuelan seismic code. Select state and city, soil type S1 (rock) through S4 (soft), importance group A/B1/B2, and response factor R. All Venezuelan states are available in the location selector.
Unit Systems
PSI supports both SI (mm, MPa, °C) and US customary (in, psi, °F) unit systems. Wind inputs accept m/s or kPa in SI, and mph or psf in US. The active unit system applies globally — all input labels and placeholders update automatically with no manual conversion required.
Key Features at a Glance
Browser-based
No desktop software or plugins required. PSI runs entirely in the browser and is accessible from any device with a modern web browser.
Real-time results
Calculations update as you type. The analysis dashboard at
/soporte-analisis displays metrics, charts, and result tables derived from your current design inputs.Dark mode
Full dark mode support throughout the interface. Toggle between light and dark themes to suit your working environment.
Print & export
Generate a formatted summary report of your design inputs and results. Print directly from the browser or export to PDF for documentation and client deliverables.
Navigation Overview
The sidebar organizes the application into three sections: Elementos a presión- Recipientes (
/recipientes-analisis) — Vessel analysis - Análisis de soportes (
/soporte-analisis) — Support results dashboard - Diseño de soportes (
/soporte-diseno) — Support design input form
- Vigas (
/vigas-analisis) — Beam analysis - Análisis de soldadura (
/soldadura-analisis) — Weld analysis - Diseño de soldadura (
/soldadura-diseno) — Weld design
- Materiales ASME VIII DIV 1 (
/basic-tables) - Materiales ASME VIII DIV 2 (
/data-tables)
PSI’s interface is in Spanish, reflecting its primary user base in Latin American engineering practice. This documentation is in English to serve the broadest international audience.