🏗️ Construction · Sequence
Construction Material Procurement
How a construction site orders materials: site request, quotes from suppliers, purchase order, delivery, quality check and payment.
Drawing diagram…
What this diagram shows
- Site engineers raise requests against the project budget
- Purchase compares at least three quotes
- Payment is released only after goods receipt and quality check
Prompt used
Procurement sequence: the site engineer raises a material request (cement, steel) against the bill of quantities, the project manager approves it, the purchase team gets quotes from three suppliers and issues a purchase order to the best one, the supplier delivers to site with an invoice, the store keeper records the goods receipt, quality checks samples (cube test, steel grade certificate), and accounts pays the supplier after three-way matching.
Mermaid code
sequenceDiagram actor SE as Site Engineer actor PM as Project Manager participant PU as Purchase Team participant SUP as Suppliers actor SK as Store Keeper participant QC as Quality Check participant AC as Accounts SE->>PM: Request 200 bags cement, 5 t steel PM-->>PU: Approved within budget PU->>SUP: Request quotes SUP-->>PU: 3 quotes PU->>SUP: Purchase order to best quote SUP->>SK: Deliver with invoice SK->>QC: Goods receipt, sample check QC-->>SK: Test certificates OK SK->>AC: Goods receipt note AC->>AC: Match PO, receipt, invoice AC->>SUP: Payment
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