We keep every as-built drawing for ten years minimum. Not because we have to — because our clients keep coming back for them. Three years after an install, someone needs the exact beam spacing for a mezzanine addition. Five years later, an insurance assessor wants the original load calculations. Seven years down the track, a new facility manager is planning an expansion and needs to know what's already there.

Most racking contractors hand over a basic layout sketch and call it done. We've learned that's not enough. Real warehouses evolve, and when they do, accurate documentation becomes the difference between a smooth project and starting from scratch.

What Goes Into Our As-Built Documentation

Every completed job gets a full documentation package. We're talking engineered drawings with actual dimensions, not catalogue sketches. Load calculations against the real pallet weights we measured on site. Material certificates for every beam and upright. Photos of the completed install from multiple angles.

The drawings show everything: beam levels to the millimetre, upright spacing, any custom modifications we made during install, floor anchor positions, and clearance dimensions around columns or utilities. If we installed safety barriers, mesh backing, or column guards, those go on the drawings too.

We also document what we found during the site survey — slab thickness, any remedial work needed, forklift turning radii we designed around. This matters because warehouse operators change forklifts, and the next contractor needs to know what constraints the original design worked within.

How Clients Actually Use These Drawings

Expansion planning is the big one. We get calls from clients wanting to add a second level, extend into a new bay, or reconfigure for different SKUs. Having the exact dimensions and load data means we can quote accurately without a full re-survey. We know where the steel is, what it's rated for, and how much additional load the existing structure can handle.

Safety inspections are another regular use case. When a client brings in a rack inspection engineer — either for insurance or their own safety programme — those engineers need reference drawings to check against current conditions. They want to know the original design loads, beam specifications, and intended configuration. Without proper documentation, a simple inspection becomes an expensive forensic exercise.

Insurance claims have taught us how critical this documentation really is. We've had clients suffer forklift impacts, seismic events, even roof leaks that damaged racking. The insurance assessor wants to know exactly what was there originally, what it cost, and what's needed for proper repair. Our as-built drawings provide that baseline.

Facility management changeovers happen more often than you'd think. New managers come in, want to understand what they've inherited, and the previous team didn't leave proper handover documentation. We've walked new facility managers through our drawings to explain load limits, expansion possibilities, and maintenance requirements for their existing racks.

BCA Submissions for Future Work

When clients want to add mezzanine levels above existing racking, BCA wants to see the original structural design. Our drawings show the foundation work, connection details, and load paths that a new mezzanine design needs to work around. Without this documentation, the new engineer has to assume worst-case scenarios, which usually means over-engineering and higher costs.

We've also seen clients need our drawings for building permit applications when they're expanding the warehouse itself. The building consultant needs to know where existing structural loads are concentrated, especially for heavy-duty racking installations.

The Cost of Missing Documentation

We regularly get calls to quote work in warehouses where the original contractor didn't leave proper drawings. Every single time, it means starting with a full structural survey — measuring everything, calculating loads from scratch, sometimes even testing connections to verify their capacity.

That's billable time that could have been avoided. Worse, it usually means we can't give an accurate quote until after the survey work is done. Projects that should take two weeks to quote and price become month-long exercises.

The frustration for warehouse operators is real. They know they have good racking — it's been working fine for years — but they can't prove its capacity or get approval for modifications without essentially re-engineering everything from scratch.

Our Documentation Process

Documentation starts during design, not after installation. Every beam gets specified with its load rating clearly marked. Every connection detail gets drawn to scale. We photograph key installation steps, especially foundation work and complex connections that won't be visible once the job's complete.

After final inspection, we compile everything into a proper archive. Physical drawings get stored in fireproof cabinets. Digital files go into our document management system with multiple backups. We tag everything by client name, installation date, and project reference so we can find it quickly when needed.

We also maintain a site photo library. Not just glamour shots of the finished rack — detailed photos showing connection details, clearance dimensions, and any site-specific modifications we made during install.

Frequently Asked Questions

Do you charge clients for accessing old drawings?

No charge for basic as-built drawings or load certificates. If a client needs extensive engineering analysis of the existing structure for a major modification, that becomes a separate scope, but the base documentation is always available.

What if our original racking contractor didn't leave proper drawings?

We can do a full structural survey and create proper as-built documentation for existing installations. It's more work than having the originals, but it gives you the baseline you need for future planning or insurance requirements.

How detailed are the load calculations you keep?

Full calculations showing beam deflection, connection capacities, and safety factors against your actual pallet weights and storage patterns. Not just catalogue load tables — engineered calculations for your specific installation.

Can you provide documentation in digital format?

Yes, we can provide PDFs or CAD files depending on what your engineer needs. The original drawings are done in AutoCAD, so we can export in most standard formats.

What happens to our drawings if Wong Lye closes down?

We maintain professional indemnity insurance that covers document retention requirements, and our document management system includes provisions for client access even in unlikely business scenarios. Your drawings are your property — we're just the custodian.

If you're planning racking work and want to know it's properly documented from day one, talk to us about your project. We'll make sure you get drawings you can actually use, not just file away. WhatsApp us to discuss your documentation requirements.