Suspended Fireplace

Project Overview

This project involved the structural design and optimization of a suspended architectural fireplace for a luxury residential development. The 5.5-meter-tall feature was suspended entirely from the reinforced concrete ceiling slab, requiring the supporting steel frame to safely carry approximately 1.8 tonnes of stone cladding without floor support.

Client Challenge

The supporting frame had to control strength, stability, and lateral deflection while preserving the architectural intent and protecting brittle Travertine cladding from cracking.

Scope of Work

Structural analysis and optimization of the suspended support system, including review of accidental loading, ceiling anchorage performance, and steel section efficiency.

Engineering Approach

A comprehensive 3D finite element model was developed in SAP2000 to evaluate strength, stability, and lateral deflection under gravity and accidental loading. Multiple steel section configurations were investigated through a sensitivity analysis to identify the optimum balance between structural efficiency and serviceability.

Deliverables

• SAP2000 v26 finite element model
• Steel section sensitivity analysis
• Ceiling anchorage verification review
• Recommended SHS 60×60×4 mm section
• Design checks to AISC 360-16, ASCE 7-16, and ACI 318-19

Results / Project Outcome

The selected design reduced lateral displacement from 32.9 mm to only 6 mm, ensured compliance with stringent serviceability requirements, and delivered a fabrication-ready structural solution that safely supports approximately 1.8 tonnes of suspended load.