Below-grade wall waterproofing
Public anonymised example of the procurement file structure. It does not represent a real purchase or suppliers.
Seven stages
Fictitious purchasing text and documents
Reviewed line items, quantities and units
Eight fictitious companies with inclusion rationale
Professional request reviewed by the buyer
Five threads with sample bids and attachments
Line-item facts linked to their source
Allocation, payment, rationale and closing documents
Line-item matrix
Line itemQuantityProveedor AProveedor BProveedor C
Membrana impermeabilizante 4 mm1.240 m²8,42 € ↗ source9,10 € ↗ source8,76 € ↗ source
Geotextil 300 g/m²1.310 m²1,72 € ↗ source1,64 € ↗ source1,81 € ↗ source
Lámina drenante nodular980 m²5,93 € ↗ source6,18 € ↗ source5,74 € ↗ source
Accountable decision
The scenario balances cost, lead time and compliance. A person reviews the sources and approves each line award.
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