ZanKhan
Case Study #3

Seismic Retrofit & BIM Integration for Heritage Tower

Advanced structural reinforcement and digital modeling for a 1920s landmark building to meet modern seismic codes.

The Challenge

The 12-story "Heritage Tower," a protected architectural landmark, required a comprehensive upgrade to withstand Zone 4 seismic activity. The project faced strict constraints: preserving the historic facade, minimizing interior disruption for ongoing tenants, and integrating new structural elements within the existing, complex load-bearing masonry system. Traditional assessment methods were insufficient for the intricate, non-uniform construction.

Our Solution & Process

We deployed a full Building Information Modeling (BIM) workflow from the outset. The process involved:

  1. Laser Scanning & Point Cloud Creation: Capturing millimeter-accurate 3D data of the entire structure, including hidden internal shafts.
  2. Federated BIM Model: Integrating architectural, structural, and MEP models into a single coordinated digital twin to identify clashes and plan reinforcement paths.
  3. Non-Linear Analysis: Using the BIM data to perform detailed finite element analysis, simulating earthquake forces to pinpoint critical stress points in the masonry and foundations.
  4. Steel Exoskeleton Design: Engineering a custom, internal steel frame that connects to key load points, transferring seismic loads without altering the exterior. All components were prefabricated using BIM-derived specifications.

Results & Impact

  • Achieved a 40% increase in lateral load resistance, exceeding the required seismic code by 15%.
  • Reduced on-site construction time by 30% through precise prefabrication and clash-free installation guided by the BIM model.
  • Zero damage to the historic facade and minimal tenant downtime during the retrofit phase.
  • The delivered "as-built" BIM model now serves as a vital asset for the building's future maintenance and management.
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Project Details

Client
Heritage Tower Consortium
Location
Urban Center
Scope
Seismic Retrofit, BIM Modeling
Duration
18 Months

Project Visuals

BIM coordination and on-site installation of the structural reinforcement system.

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Client Testimonials

Discover what industry leaders and partners say about our structural engineering precision and BIM integration services.

David Chen

Project Director, Atlas Construct

★★★★★
"The seismic retrofit analysis for our high-rise was delivered with exceptional clarity. Zan-Khan's BIM models identified critical stress points we had missed."

Maria Rodriguez

Lead Engineer, UrbanSpan

★★★★★
"Their infrastructure planning for the bridge complex was monumental. The load-bearing calculations were rigorous, ensuring long-term safety and compliance."

James Kohler

CEO, Foundation First

★★★★☆
"Zan-Khan's blueprint digitization streamlined our entire commercial development process. A forward-thinking partner in structural engineering."

Sarah Lin

Architect, Form & Function

★★★★★
"Collaborating on the civic center project was seamless. Their advanced modeling provided insights that enhanced both aesthetics and structural integrity."

Robert Hayes

Site Manager, Titan Build

★★★★★
"The safety-first methodology is not just a slogan. Their on-site assessments and clear documentation prevented potential hazards during construction."

Amira Hassan

Infrastructure Planner, MetroCorp

★★★★☆
"Their civil infrastructure reports are exceptionally detailed. Zan-Khan's expertise in load-bearing analysis is a cornerstone of our project's success."