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residential structural engineering

Residential Structural Engineering

Engineered framing solutions for modern residential architecture where expansive open-plan layouts, high ceilings, and extensive glazing exceed standard timber span tables. We design integrated structural framing combining timber ), light-gauge steel , and hot-rolled structural steel —including portal frames, PFC lintels, and transfer beams over wide spans. Every design is engineered for site-specific wind classifications and seismic restraint to secure roof tie-downs, lateral shear walls, and hold-down anchorages against net uplift and overturning.

low rise institutional & commercial engineering

Low-Rise Institutional & Commercial Engineering

Specialized structural engineering design for community, health, and educational infrastructure, including schools, aged-care facilities, and day hospitals. We provide high-efficiency post-tensioned (PT) slab design to achieve large column-free spans, minimize floor-to-floor heights, and reduce concrete volumes across multi-room layouts. Our capabilities extend to specialized tensile elements and architectural rigging, including structural steel cable wire systems, tie-rod bracing networks, and lightweight canopy structures engineered to meet demanding deflection and durability limits.

civil stormwater, osd & wsud engineering

Civil Stormwater, OSD & WSUD Engineering

Comprehensive site drainage solutions engineered to streamline council Development Application (DA) and Complying Development Certificate (CDC) approvals. We deliver complete On-Site Detention (OSD) sizing, hydraulic pipe network designs (AS/NZS 3500.3), and MUSIC environmental modeling for Water Sensitive Urban Design compliance on dual occupancies, multi-dwelling estates, and commercial facilities.

substructure, footings, and retaining walls

Substructure, Footings, and Retaining Walls

Robust foundation and earth retention solutions engineered for challenging ground conditions. We design stiffened raft slabs, waffle pod systems, and suspended pier layouts optimized for highly reactive clay sites (AS 2870), alongside concrete sleeper, reinforced blockwork, and contiguous piled shoring walls for sloping blocks and tight boundary clearances.

alterations, additions & structural remediation

Alterations, Additions & Structural Remediation

Engineering assessments and retrofit solutions for renovations, second-storey additions, and roof modifications. We review existing load paths to detail steel and engineered timber transfer lintels, posts, and masonry piers for load-bearing wall removals. For heritage and established homes, we deliver underpinning schemes to remediate foundation subsidence, restumping specifications, and framing designs for house raising and build-unders.

statutory certification & design compliance

Statutory Certification & Design Compliance

Fast, reliable statutory sign-offs that keep your project compliant and prevent construction bottlenecks. We issue certified structural computations, Design Compliance Declarations under state building acts, and mandatory construction-phase site inspection certificates for building surveyors and private certifiers.

Our Happy Clients!

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Luke Fallowfield profile picture
Luke Fallowfield
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I recently engaged iDECS for civil engineering services on our subdivision project and couldn’t be happier with the experience. Their team was a pleasure to work with excellent communication and outstanding service from start to finish.
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Mikey Manogue profile picture
Mikey Manogue
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Great team to work with.
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Kalaiy Arasan Veerasamy profile picture
Kalaiy Arasan Veerasamy
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