Prefab construction contractor in Weifang, Shandong. We engineer…
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Two-storey prefab modular building with external red steel staircase
Prefab Buildings

Multi-Storey Modular Block

Apartment, office and accommodation blocks of two to five storeys, built as engineered modules with the services already roughed in and the connections designed for the loads at your site.

Product overview

What It Is and What It Does

A multi-storey modular block is a building assembled from engineered modules rather than poured on site. The structure, the connections between modules and the load path down to the foundation are designed together, which is what allows two to five storeys.

Modules arrive substantially finished, with mechanical, electrical and plumbing services roughed in at the factory. Site work is craning, connecting and completing — not building.

We have delivered this system as a 3,000 m² two-storey complex for UMMO in El Salvador and as two-storey office and accommodation buildings in Thailand, both erected by local crews working from our drawings and bolt schedules.

Two-storey prefab modular building with external red steel staircase
Key benefits

What You Get From It

Programme moves off the site

Most of the build happens in Weifang while foundations and services are going in at the destination.

Two to five storeys

Engineered connections carry the load down through the stack, so the system is not limited to single-storey buildings.

Services already in

MEP roughed in at the factory means fewer trades sequencing around each other on site.

Weather stops mattering

Finishing work happens indoors, so a wet season does not decide the handover date.

Problems it solves

The Situations This Product Answers

Fixed opening dates

Schools, offices and accommodation that must open on a date cannot absorb weather delays. Factory work is not weather dependent.

Thin local trade capacity

Where skilled trades are scarce or expensive, moving the finishing into the factory removes the bottleneck.

Sites that cannot take a long build

Urban and operational sites benefit from a short, predictable erection window.

Repeatable building types

Programmes rolling out the same building across several sites get the benefit of one engineered design, many times.

Who it is for

Buyers Who Specify This Product

Developers

Apartment and office blocks where programme drives the return.

Government programmes

Repeatable building types rolled out across several sites.

Mining and energy owners

Permanent administration and accommodation buildings at site.

Contractors

Buildings that have to be handed over inside a fixed construction window.

Application scenarios

Where It Is Used

Apartment blocks

Residential floors stacked with engineered inter-module connections.

Office buildings

Open floor plates formed by combining modules.

Permanent site accommodation

Long-term housing at mines and plants.

Mixed-use blocks

Ground-floor amenity with residential or office floors above.

Technical features

How It Is Built

Engineered connections

Inter-module connections and the load path to foundation are designed for your wind and seismic loads.

Volumetric or panelised

Delivered as whole modules or as panels, depending on your crane and your freight budget.

Factory MEP

Mechanical, electrical and plumbing services roughed in before shipping.

Substantially finished

Internal finishes largely complete on arrival.

Numbered kit

Members and panels marked to the erection drawings for sequence assembly.

Specifications

Specification Table

Values not stated are confirmed on the approved project drawing rather than assumed.

Storeys2 to 5 with engineered connections
Delivery formatVolumetric modules or panelised kit
ServicesMEP roughed in at the factory
StructureLight steel frame with engineered inter-module connections
Engineered toAS/NZS, EN (CE) and your specified wind and seismic loads
Lead time35 to 60 days for custom projects, depending on engineering and volume
IncotermsFOB, CIF or DAP
Floor-to-floor heightTBC — confirmed on the project drawing
Floor loadingTBC — confirmed on the project drawing
Fire ratingTBC — confirmed on the project drawing
Acoustic separation between modulesTBC — confirmed on the project drawing
Materials

What It Is Made From

Frame

Light steel structural frame sized to the engineered loads.

Floors

Engineered floor build-up specified per project.

Envelope

Insulated panel or specified facade build-up.

Services

MEP components installed to the approved services drawings.

Manufacturing process

How It Is Made

Engineering

Structural drawings, load calculations and stamped reports prepared for your jurisdiction.

Frame fabrication

CNC cutting, robot welding and galvanising or priming.

Module assembly

Floors, walls and roof assembled and squared.

MEP rough-in

Services installed and tested.

Finishes

Internal finishes completed to the approved specification.

Mark, pack and load

Members marked to the erection drawings and loaded to the container plan with photo report.

Quality control

Three-Stage Quality Control

  • Material certificates checked against the approved specification
  • Frame geometry and weld inspection before galvanising
  • Services function test after rough-in
  • Final finish inspection and photo report before sealing
Certifications

Standards and Documentation

  • Structural drawings, load calculations and stamped reports for your jurisdiction
  • Engineered to AS/NZS and EN (CE) where specified
  • Material certificates and load-test reports supplied per order

Customisation Options

  • Storey count and floor plate layout
  • Volumetric or panelised delivery
  • Facade treatment and external finish
  • Services standard for the destination
  • Fire and acoustic performance to local code
  • Foundation interface detailing
Comparison

How It Compares

How the modular block compares with the alternatives on a multi-storey job.

Multi-storey modular blockPanelised building kitCast in place
Site programmeShortestShortLongest
Freight volumeHighestLowerLocal materials
Crane requirementHighestModerateVaries
Finish on arrivalSubstantially finishedShell and structureNone
Weather exposure during buildMinimalModerateHigh
Use guide

Getting It Right on Site

Confirm crane capacity first

Volumetric modules are sized by what your site can lift. Tell us the available plant with the enquiry.

Get the foundation interface early

The load path from the module stack to the foundation is engineered work — it should not wait for the units to arrive.

Sequence from the marked drawings

Members and panels are marked; erecting out of sequence is the most common cause of rework.

Plan the services connection

MEP is roughed in, but the connection to site services still needs designing into the programme.

Buyer questions

Multi-Storey Modular Block FAQ

What buyers ask before placing an order for this product.

How many storeys can a modular block reach?

Two to five storeys with engineered connections. The exact limit for your project depends on the wind and seismic loads at the site, which our engineers calculate before fabrication.

What is the difference between volumetric and panelised delivery?

Volumetric modules arrive as whole rooms and need more freight volume and a larger crane. Panelised kits ship flatter and cost less to freight, but need more assembly on site. Both are supplied from the same engineering.

Is the plumbing and wiring installed before shipping?

Mechanical, electrical and plumbing services are roughed in at the factory. Final connection to site services happens during erection.

What lead time should we plan for?

Custom steel structures and building projects run 35 to 60 days depending on engineering and volume.

Can you work to our architect's drawings?

Yes. Send the drawings you have and our engineers return a prefab version with the connections, load calculations and packing detailed for your destination.

Get a Price for the Multi-Storey Modular Block

Send quantity, destination port and any code requirements — drawings, a spec sheet and a fixed price come back.