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Extending Pre-Engineered Building (PEB) Systems to High-Rise Process Structures

Written by Engineering Director | May 26, 2026 6:57:57 AM

 Introduction  

A high-rise oleochemical plant demands significantly more than a standard industrial warehouse. It requires a purpose-built industrial process facility where the steel structure, equipment layout, and process flows are fully integrated to support continuous production, stringent safety protocols, and long-term structural reliability.

Using a real-world case study from Medan, Indonesia—this post explores how Pre-Engineered Building (PEB) principles can be successfully extended into high-rise, equipment-intensive industrial applications. Nova Buildings served as the steel structure specialist, transitioning traditional PEB efficiency into complex industrial structural engineering.

Project Overview

This project is a landmark 41-meter-tall, multi-level process plant structure designed for integrated oleochemical production. Located in an area characterized by a high seismic zone, the facility houses several core processing units:

  • Fatty Acid Distillation Plant
  • Glycerine Distillation Plant
  • Bleaching Plant
  • Oil Hydrogenation Plant

Unlike standard industrial infrastructure designed for storage or occupancy, this multi-tier building is entirely process driven. Every level is configured around specific equipment footprints, localized operational access, and complex pipe routing.

The Engineering Challenge: Structural Behaviour as an Industrial Tower

At a height of approximately 41 meters, the plant behaves structurally like a vertical process tower rather than a conventional single-storey factory. This introduces severe design complexities that govern the primary steel frame:

1. Massive Localized and Overturning Loads

The structure handles heavy, concentrated process loads across multiple levels, including:

  • A Glycerine Distillation Tower (Dia 2930 mm 12.0 m elevation).
  • A Reboiler Heat Exchanger (Dia1940 mm 6.0 m elevation).
  • A heavy-duty cooling tower operating at the roof level.

The height of the distillation columns, combined with wind and earthquake actions, generates significant overturning moments. These heavy localized forces induce severe combined axial and bending stresses in the main structural columns.

2. High Seismic Zone Demands

Operating in a high seismic region means the structural framework must endure strict dynamic conditions. Designs must account for:

  • Mass irregularity due to heavy equipment placed on elevated platforms.
  • Torsional effects and second order (P-Delta) geometric behaviours.
  • Drift and vibration control to maintain equipment performance and protect piping connections.

3. Multi-Disciplinary Coordination & Revisions

Industrial processing plants undergo fluid design environments. Structural configurations must keep pace with continuous adjustments from process engineers, equipment suppliers, and MEP designers regarding nozzle locations, equipment dimensions, and maintenance clearance zones—often persisting deep into the fabrication and erection stages.

The Solution: An Enhanced PEB Hybrid Steel System

To satisfy these demanding parameters while retaining fast-track delivery schedules, Nova Buildings implemented a hybrid structural steel solution. This system utilizes standard pre-engineered building concepts as a baseline and scales them up for heavy process duty:

 

  

  • Braced Frames: Deployed as the primary lateral load-resisting system to effectively control drift under wind and seismic forces.
  • Selected Moment-Resisting Frames: Integrated strategically into the grid to introduce necessary stiffness, structural redundancy, and alternative load paths.
  • Heavy-Duty Floor System: Built with closely spaced structural steel beams and robust connection detailing to distribute concentrated equipment loads safely down through the foundations.
  • Advanced Dynamic Modelling: Analysed utilizing 3D structural models and response-spectrum methods to capture true second order (P-Delta) behaviour and address torsional irregularities.

Advantages of the Pre-Engineered Building Approach

Extending PEB design logic past simple warehouses and into high-density process towers delivers critical advantages for developers, consultants, and EPC contractors:

1. Compressed Construction Timelines

By standardizing member profiles, connection details, and fabrication procedures, the shop production cycle is streamlined compared to fully bespoke conventional steel. Well-planned industrial steel facilities can reduce construction duration by several months relative to traditional concrete alternatives, allowing owners to commission their production lines and bring capacity online sooner.

2. Segmented Erection in Confined Areas

The multi-tier steel framing is engineered from the ground up to be divided into logical erection sequences. This allows heavy cranes to move efficiently within compact footprints on active industrial sites, enabling parallel work streams such as equipment installation, deck slabbing, and piping prefabrication.

3. High Dimensional Precision & Less Rework

Maintaining rigorous dimensional tolerances during plant detailing ensures that structural anchor points precisely match vendor equipment drawings. This close control mitigates the risk of costly field modifications, component clashing, or late-stage structural welding on-site.

4. Life-Cycle Adaptability and Structural Durability

PEB structural components are detailed for ease of routine inspection and long-term durability. Furthermore, open steel platforms feature dedicated, reserved structural zones. This inherent flexibility permits straightforward future upgrades, such as modifying equipment skids or rerouting dense process piping networks without requiring extensive structural demolition.

Conclusion

This project demonstrates that pre-engineered steel architecture is no longer restricted to wide, low-rise warehouses. By applying advanced dynamic analysis and hybrid frame configurations, PEB structures can easily support heavy vertical processing lines within a minimal footprint. The result is a high-density, highly reliable manufacturing plant delivered with speed, predictability, and long-term operational flexibility.  

 

Planning a complex industrial or manufacturing facility?  Contact Nova Buildings Group to explore the right PEB solution for your project.