Factory and Warehouse Handover Documents: What You Should Receive

The building outlives the project team

At the end of a factory or warehouse project, attention is on the first production run or the first truck at the dock. The handover file is treated as paperwork for the contractor to finish.

It is the opposite. The documents are what the owner uses for the next twenty years: when a crane is added, solar goes on the roof, a mezzanine is planned, the insurer asks how the fire system was tested, an excavation is about to cut a buried cable, or a roof leak needs a warranty claim. By then, the designers and site engineers have moved on.

This article takes the industrial angle. The office equivalent is covered in our note on fit-out handover documents. The difference is scale: a factory owner receives the whole building, including the structure, the ground beneath it and everything buried around it.

Factory handover documents by package

Not every building has every package. The list should be cut to the scope, but decided before the work starts.

The structural design basis is the document owners most often lack

A PEB or steel building is usually designed close to its stated loads. That is efficient, but it means the building's capacity for anything new is only known from its design basis: the roof collateral load allowed for services, the crane loads if any, the mezzanine and floor loads, and the wind and seismic basis used by the designer.

Ask for the design basis report, the calculations and the PEB supplier's drawings, including anchor bolt and connection details, alongside the general arrangement. When an engineer later checks the roof for solar or the frame for a crane, these documents turn a survey and back-calculation into a desk check. Structural design provisions sit in NBC 2016, Part 6, with steel design in IS 800:2007. The values themselves belong to the project's structural engineer, and this article does not give them.

As-builts must include what is underground

As-built drawings record what was installed rather than what was intended. On an industrial site the most valuable as-builts are of things no one will ever see again: buried HT and LT cables, fire water mains, storm and foul drainage, earth pits and their interconnections, and every crossing between them.

Those can only be recorded accurately while trenches are open. Ask for them to be updated as the work proceeds, with levels and offsets from fixed points, rather than reconstructed at the end.

Test and commissioning records are the evidence

A system that looks finished may not have been proven. The records that show it was include:

• Pressure tests on fire water mains, sprinkler and hydrant pipework, and plumbing, stating the test pressure, duration and result, signed by those present.
• Electrical tests, including insulation resistance and earthing results. Electrical wiring practice is set out in IS 732 and earthing in IS 3043:2018.
• Equipment tests for transformers, panels, DG sets and pumps, as supplied.
• Commissioning records showing each system was set to work and performed as specified. Our note on commissioning explains what the process covers.

The specification and the project's engineers set which tests apply and what results are acceptable. The owner's job is to make sure the records exist, are signed and are in the file.

Fire system records and statutory documents

Fire detection, hydrant and sprinkler systems in an industrial building are inspected by authorities and examined by insurers, and alterations to them need the original design and as-builts. The handover should include the system drawings as installed, test records, equipment data and the cause-and-effect matrix linking detection to alarms and plant shutdowns.

Fire and life safety provisions sit in NBC 2016, Part 4. Which statutory approvals, inspections or completion documents apply to a particular building, including those for lifts, cranes, pressure equipment and the electrical installation under state rules, depends on the building, its use and its location. That must be established by the project's consultants and the authorities having jurisdiction.

Warranties: the conditions decide whether they work

Roof sheet and coating warranties, waterproofing, floor coatings, steel paint systems and equipment warranties often depend on conditions: inspections at set intervals, approved repairs, cleaning, or no unapproved fixings. Record for each the start date, scope, conditions and issuer in one register at handover. A roof warranty voided by a later unapproved solar fixing is a common and avoidable loss.

The handover, snagging and defects guide covers how these records support the defects period.

Format, ownership and where the file lives

A complete file is still useless if nobody can find it. Three decisions make it usable:

• Format. Editable drawing files as well as PDFs, so the next designer can work from them, and searchable PDFs for manuals and test records.
• An index. One register listing every document by package, with its revision and date, so gaps are visible at handover rather than discovered during a breakdown.
• An owner. A named person in the plant or facilities team who holds the master copy, controls updates when the building changes, and passes it on when they move.

Industrial buildings change more than offices do: a line is added, a bay is extended, a crane is upgraded. Each change should update the file, or within a few years the as-builts describe a building that no longer exists.

Common mistakes

• No design basis in the file. The first rooftop solar enquiry triggers a full structural survey.
• Underground as-builts drawn from memory. The next excavation finds the cable.
• Pressure tests witnessed but not recorded. There is nothing to show the insurer.
• Warranties filed without their conditions. They lapse unnoticed.
• PEB supplier drawings missing. The steel was designed off site, and the drawings stayed there.
• Handover list agreed at completion. What was only visible during the works is lost.

What to ask before the contract is signed

• Which documents will we receive, for each package, in what format and by what date?
• Will the structural design basis, calculations and PEB supplier drawings be included?
• How will underground services be recorded while trenches are open?
• Who signs the pressure, insulation resistance and earthing test records?
• Is there a warranty register with dates, scope and conditions?
• Which statutory documents apply, and who is obtaining each one?

Standards referenced

Fire and life safety in NBC 2016, Part 4; structural design in NBC 2016, Part 6 and steel design in IS 800:2007; electrical wiring installations in IS 732; and earthing in IS 3043:2018. The documents required for a specific building, the tests and acceptance criteria, and any statutory completion or inspection documents must be established by the project's engineers, consultants and the authorities having jurisdiction.