GridBridge Sourcing quote comparison through a written scope
The sourcing process at GridBridge Sourcing turns a brand-led search into one matrix. Factories are asked to price alternative steel buildings on that matrix. Original-brand supply is outside this service.
Send Project Requirements- Use and occupancy
- Footprint, eave height, clear span
- Wind, snow, seismic criteria
- Code jurisdiction
- Quantity and destination
- Shell, freight, or installation boundary
Shell package against installed scope
Read the two columns as scope boundaries, not as two brands and not as prices. A number is comparable only when both suppliers tick the same cells.
| Line the buyer must define | Shell or kit quote | Installed scope quote |
|---|---|---|
| Primary frame and secondary framing | Ask for member type, hot-rolled or cold-formed, and the purlin and girt layout. | Same frame list, plus who checks fit-up on site. |
| Roof and wall | Panel profile, insulated metal panel, and thermal transmittance may be optional. | Enclosure is inside the price only if the sheet says so. |
| Foundation interface | Anchor reactions are often a drawing deliverable, not the concrete work. | Concrete may still be excluded. Do not assume the pier is included. |
| Freight and crane lift plan | Usually excluded or listed as a separate freight line. | Unloading and lift may be included while haul permits stay outside. |
| Engineering documents | Request calculations and drawings for the quoted system and jurisdiction. | Ask whether a local stamp is in scope or only a design package for others to stamp. |
| IBC, ASCE 7, AISC 360, AWS D1.1 | Name the edition the design should follow. A standard title is not a certificate held by this desk. | Same editions, plus the inspections the installer must allow. |
Scope questions buyers raise
Which costs have to be split out?
Keep the building package, outbound freight, duties or taxes if the route crosses a border, foundation work, and installation labor on separate lines. A single landed number hides which of those the supplier refused.
What if two factories use different steel grades?
Record the submitted grade and coating on each sheet. Do not average them. The buyer engineer accepts or rejects the substitution before the commercial comparison continues.
Does a standard layout skip the jurisdiction?
A repeatable bay can shorten drafting only when the published module dimensions, loads, and energy rules fit the site. Otherwise the item is a custom frame, and the quotation should say that.
Who confirms IAS AC472 or ISO 9001?
Ask the supplier which certificate, plant, and date apply to the system being quoted. GridBridge Sourcing does not display those marks as its own, and a certificate for a different plant is not evidence for this order.
Ask for quotations on the same written scope
Send the checklist you are ready to stand behind. Factories should answer that list rather than a brand name alone.