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Two quotation packets compared on a drafting table

Scope and document review

GridField Sourcing Scope and Document Comparison

GridField Sourcing is an independent sourcing service. A portakabin search can open the conversation, but the work on this page is the written scope that lets two factories answer the same question. This desk does not claim manufacturer status or authorized dealer status, and it does not supply the named brand.

Send Project Requirements
  1. Use and occupancy
  2. Dimensions and layout
  3. Loads and jurisdiction
  4. Quantity and destination
  5. Transport and foundation
  6. Documents requested

Two quote columns that should not be merged

Buyers often receive one number for a shell and another for a building that includes freight, set and utilities. The table keeps those columns apart. Values stay as questions until a supplier fills them for the quoted system.

Line Shell or kit Installed or turnkey ask
Primary structure Primary frame, secondary framing, purlin and girt as specified by the bidder Same frame plus the erection sequence and crane lift plan the bidder accepts
Envelope Wall and roof build-up, insulated metal panel if offered, openings listed Envelope plus site joint closure, flashings and a stated thermal transmittance
Foundation interface Reaction loads or bearing points the buyer must design for Who designs the pad, piers or slab, and which soils data is assumed
Services Rough-in points only, or excluded Electrical, plumbing and HVAC extent, and what stays with local trades
Freight and tax Ex-works or a named handover point Destination, unloading, duties and tax shown as their own lines
Documents General arrangement if included Calculations, weld notes and a quality document tied to the plant and jurisdiction

Steps the desk will coordinate

Volumetric modular construction and panelized construction can both answer a site-office need. The first moves more finish off site and tightens the transport envelope. The second may pack flatter and leave more weather exposure on site. The service is to make that choice visible in the quotation matrix, not to declare a winner without the site.

A standardized unit can be compared faster when the published module dimensions fit the plan. A custom rigid frame is the better question when clear span, crane loads or an unusual eave height fall outside that unit. Neither path is a promise of code approval. The authority having jurisdiction still reads the submitted documents.

Readers who need the load worksheet first should use the Specification Center. Readers who already know the family can return to Product Systems and open a card. The card dialog and the form on this page keep separate preference fields.

Questions that change the quotation

Which costs have to be separate?

Product, freight, unloading, foundation, installation, utilities, permits and tax. If a bidder folds two of those into one figure, ask for the split before the figure is ranked.

What is a comparable quantity?

State modules or building sets, not a vague lot. Add whether the count is a single phase or a repeat order. Partial shipment rules belong beside the count.

Can a budget be optional?

Yes. Write USD and say per unit or whole order. Leaving it blank does not block the note. The budget is a target, not a price this desk has already obtained.

Which documents should each supplier quote?

General arrangement, reactions at the foundation interface, envelope description, and any calculation the bidder says is included. Welding references such as AWS D1.1 are requests, not a claim that this desk holds a stamp.

How are code regimes kept apart?

IBC commercial modular work, IRC housing and HUD Code manufactured homes are named separately. A supplier must say which regime the quote assumes. A US destination does not by itself select one of them.

Who accepts the alternative?

The buyer and the project professionals they appoint. GridField Sourcing organizes questions and quotations. It does not approve a substitution, a plant or a warranty.

Send the scope that factories should answer

Put the use, the dimensions, the known loads and the destination in the note. GridField Sourcing will use that text as the comparison basis. No fixed discount is offered.