Design criteria before claims

DORCE Modular & Portable Building Sourcing

DORCE coordinates independent sourcing in China for modular offices, classroom blocks and relocatable site facilities. We match the brief to suppliers and compare bids against a common schedule of site loads, envelope evidence and delivery responsibilities.

Send the occupancy, location and move frequency with the first layout. A classroom intended for repeat relocation calls for different utility disconnects and lifting provisions from a permanent block on the same plan.

Review Compliance Options View the Evidence Matrix

Volumetric module with visible lifting points beside a portal-frame connection

Design loads

Record the code edition, wind basis, snow load and seismic inputs from the project engineer. A supplier quotation can mark missing criteria as provisional, with the affected drawing and price line identified.

Steel grade

Ask each bidder to name member grades, product standards and finish. Z275 is a coating designation for specified sheet steel. The quotation must identify the parts it covers and explain repair after fabrication.

Fire strategy

Compare the proposed full wall system with the test specimen. Core type, thickness, joints, door frames and service penetrations all affect whether the reported result is relevant.

Compare building packages

Stacked modular office blocks with exposed corner castings

Primary system

Modular & Portable Buildings

A volumetric module can arrive with lighting and finishes in place, reducing site fit-out. Width and height may make road haulage the deciding cost. Request external dimensions with lifting hardware included before comparing delivered prices.

For preinstalled MEP, mark the exact electrical and plumbing handover points. Include responsibility for couplers, field testing and utility connection in the bid sheet.

Compare building packages

Workforce camp dormitory modules in a desert yard

Workforce camps

A camp brief separates sleeping rooms, dining and clinical space. Record occupancy and egress requirements for each, then ask the bidders to identify the compartment boundary and associated evidence.

Portal frame industrial hall during erection

Pre-engineered frames

Portal-frame bids should identify clear span, eaves height and collateral loads. A crane beam or service platform added after the quotation can change the primary steel and the base reactions.

Warehouses and hangars

Hangar bids need door opening dimensions, support reactions and tolerances. Verify apron access and the installation sequence with the site team before deciding the shipping split.

RFQ Project inputs logged

BID Comparable scope

QC Inspection coordination

PORT Packing plan reviewed

DOC Supplier evidence indexed

Example procurement briefs

The following hypothetical RFQs show how to compare supplier scope. Country and quantities are sample inputs for the exercise. Photographs are illustrative and the examples describe proposed checks.

Camp dormitory stack used as a worked packing example

Building type: Camp dormitory
Country basis: Chile
Quantity: 48 rooms
Delivery scope: Plant to discharge port

Camp accommodation RFQ

Building type: two-storey sleeping modules. Country: Chile. Quantity: 48 rooms. Delivery scope: plant to discharge port. Compare complete room boxes with a package that ships wet rooms separately. Ask the project team to check egress and the container plan before shortlisting.

Modular teaching block beside a covered walkway

Building type: Teaching block
Country basis: Philippines
Quantity: 6 classrooms
Delivery scope: Installation interface drawings

Modular classroom RFQ

Building type: coupled classrooms. Country: Philippines. Quantity: six teaching rooms. Delivery scope: installation interface drawings included. Require a roof valley detail and identify who closes and tests the weather seal after joining modules.

36 metre clear span portal frame warehouse

Building type: Portal-frame warehouse
Country basis: Oman
Quantity: 1 hall, 36 m span
Delivery scope: Numbered steel bundles

Distribution hall RFQ

Building type: bolted distribution hall. Country: Oman. Quantity: one 36 m span. Delivery scope: numbered steel bundles. Normalize each coating system, confirm where field repairs take place and keep erection pricing separate.

Building type: Maintenance hangar
Country basis: Australia
Quantity: 1 hall, 42 m span
Delivery scope: Frame only, door by others

Hangar framing RFQ

Building type: maintenance hangar. Country: Australia. Quantity: one 42 m clear span. Delivery scope: framing package. Ask for door reactions at the head and tracks before comparing frame tonnage, and list door installation as a separate responsibility.

Where the same module is a different building

Site offices beside a concrete batch plant

Site offices and classrooms

Camp accommodation with external escape stairs

Workforce accommodation

Industrial portal-frame halls

Workshops and hangars

A welded box preserves geometry during handling when the lifting points and bracing match the design. A bolt-together kit can reduce shipping volume and adds assembly, alignment and inspection tasks. Compare the delivered and installed scope for the same site.

Supplier documents to check

Management system scope

Ask for the legal entity, covered location, scope and validity dates. A management-system certificate describes a controlled process. Structural acceptance comes from the project review and its supporting calculations.

Mill certificates

Confirm the steel grade and heat number on the mill certificate against the delivered material markings. A matching certificate should identify the same product form and batch.

Weld records

Check the installation and inspection scope before accepting a welding package. Ask who supplies the procedure, qualification records, joint map and inspection results for the specified joints.

Project code basis

The project engineer identifies applicable code editions and the authority defines acceptance. Confirm which supplier reports can support the submission and which reviews belong to the local team.

Request a supplier comparison

Share the intended use, module count, external envelope, site country, available load criteria and destination port. We can turn those inputs into a comparable RFQ and identify open items before requesting supplier pricing.

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