Steel Structures
Steel Structures: production orders and BOM, stock and warehouse, quality and reporting.
Challenges
- Mark numbers do not match the shop drawings, so the wrong pieces get assembled on site.
- The welding procedure specification (WPS) and welder certificates are not linked to the work order.
- Cost per tonne is never calculated, so the quote and the actual drift apart.
- Site erection progress is not tied to progress billing.
Workflows
From drawing to fabrication
- The shop drawing is converted into a piece list with mark numbers.
- Cutting, drilling and welding operations are defined on the work order.
- The welding procedure and a certified welder are attached to the work order.
From erection to progress billing
- Marks shipped to site are tracked with delivery notes.
- Erection progress is recorded in tonnes.
- Completed tonnage triggers the progress invoice.
Documents
- Piece list and shop drawing
- Welding procedure specification (WPS) record
- Fabrication work order
- Erection progress billing form
Reports
- Fabrication status by mark
- Cost and margin per tonne
- Welder certificate validity
- Site erection progress
Metrics
- Cost per tonne
- On-time erection rate
- Weld rework rate
- Progress payment collection time
Compliance
- EN 1090 structural steel conformity certificate
- Welder qualification and WPS/WPQR records
- Occupational health and safety records for work at height
Glossary
- Mark number
- A unique tracking code linking each piece to its drawing
- WPS
- The welding procedure record attached to the work order
- Tonnage
- The unit of measure used for costing and progress billing
- Progress billing
- An interim invoice tied to erection progress
Frequently Asked Questions
Can I track pieces by mark number?
Yes — every mark is linked to its drawing, and fabrication, shipping and erection status are visible per mark.
Can I attach the welding procedure to the work order?
Yes — the WPS and a certified welder are added to the work order, and an expiring welder certificate raises an alert.
Can I get cost per tonne?
Yes — material, labour and welding consumables are divided by tonnage to report unit cost.
Can I tie erection progress to progress billing?
Yes — the tonnage erected on site triggers the progress invoice.
Can I compare the quote with the actual?
Yes — project cost is reported side by side with the quoted line items.