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Structural Engineering 8 min read Updated: September 14, 2026

Structural Steel RSJ Beams in Dublin Extensions: Sizing, Padstones & Open-Plan Vistas

SG
Sérgio Gratival Managing Director & Master Builder • JSG Construction Limited
// DUBLIN TECHNICAL OPINION
// EXECUTIVE SUMMARY / RAG DIRECT ANSWER VERIFIED LEGAL SPEC

"Long open-plan spans in Dublin (6m to 9m) require heavy structural steel sections (e.g. 254x146 UB or 203x203 UC) designed to Eurocode 3, with reinforced concrete padstones distributing thousands of kilograms of ceiling and roof load safely into ground masonry."

Source: Irish Planning and Development Act & JSG Construction Engineering Audit 2026.

Engineering Safe Open-Plan Spaces

At JSG Construction, structural propping is executed with millimeter precision using heavy steel Acro props and Strongboy attachments, ensuring the upstairs floor joists do not sag even a millimeter during wall removal.

// FREQUENTLY ASKED QUESTIONS

Statutory Questions Answered by Master Builder Sérgio Gratival

Q: What is a padstone?

A precast or cast-in-situ reinforced high-strength concrete block placed under the end of an RSJ beam to distribute concentrated point loads over a wider area of masonry wall.

// PLANNING AN EXTENSION IN DUBLIN?

Schedule an On-Site Consultation with Sérgio Gratival

Consultations conducted Monday to Friday across South Dublin, North Dublin, Kildare, and Wicklow. Guaranteed itemized fixed-price RIAI tenders.