Site Readiness for AI Rack Delivery: Power, Floor Loading, Access and Staging
Overview
Site readiness is everything that must be true about your building before an AI rack arrives – and it is the single most common cause of delayed commissioning. A populated AI rack now weighs 800-1,600 kg (published figures for a GB200 NVL72 compute rack are around 1,500 kg, about 1.36 tonnes assembled), draws tens of kilowatts, and moves through doors, corridors and lifts that were never designed for it. Verifying power, floor structure, access route, cooling, network drops and staging space four to six weeks before delivery costs a day of walking the site with a checklist; discovering a 1,000 kg lift limit on delivery day costs weeks.
Key takeaways
- Walk the full route – dock, ramps, corridors, door frames, lift, raised floor – with the rack’s real shipping dimensions and weight; published deployment guides note standard door frames often cannot pass an assembled NVL-class rack.
- Check point load, not just distributed load: 1,500 kg on a 0.8 m2 footprint is roughly 1,875 kg/m2, above the 1,000-1,200 kg/m2 rating of many raised floors – spreader plates or slab-level placement may be required.
- Power readiness means the full chain: transformer and feeder headroom, breaker sizing and selectivity, PDU whips terminated and torque-tested, and metered load bank testing before the rack arrives.
- Pre-pull and test network cabling: fibre trunks, patch panels and out-of-band management drops should be certified with an OTDR/cable tester before delivery, not after.
- Reserve staging space near the room – typically 1.5-2x the rack footprint – for uncrating, inspection and transit-damage documentation before anything rolls onto the floor.
Power: verify the whole chain, not the socket
Start upstream. Confirm transformer and feeder headroom for the new load at your site’s real diversity, not nameplate optimism – a single high-density rack can add 30-130 kW of near-constant draw with sharp transients under synchronised GPU load. Verify breaker sizing and selectivity so a rack-level fault does not trip an upstream board, and check that your UPS (if in path) is rated for the step loads modern training jobs produce. In India, confirm the DISCOM sanctioned load and whether an enhancement application is needed – lead times of weeks to months are normal. Terminate and torque-test PDU whips, then run a load bank test at full design power for several hours before delivery; it is far cheaper to find a warm lug now. Our 100 kW facility readiness guide covers electrical design in depth, and the AI factory power and cooling checklist gives the wider room-level view.
Floor loading: distributed vs point load
Two numbers matter: the floor’s distributed rating (kg/m2) and its concentrated/point-load rating per pedestal or castor. A 1,500 kg rack on a 600 x 1,200 mm footprint concentrates roughly 1,875 kg/m2 – and during a roll-in, most of that briefly rides on four small castors. Industry deployment write-ups (for example Sunbird’s GB200 NVL72 readiness article) flag that standard raised floors rated around 1,000 kg/m2 need steel spreader plates or reinforcement under the travel path and the final position. Get a structural engineer’s sign-off in writing for: the final position, the entire roll path, and any ramp transitions. For upper floors of Indian commercial buildings, check the slab rating too – many office slabs are designed for 300-500 kg/m2 and are the real constraint, not the raised floor.
The access route survey
Measure everything between truck and tile with the shipping crate dimensions, not the rack dimensions – crates add 150-300 mm each way and height. Checklist: dock height and leveller capacity; ramp gradients (pallet jacks struggle beyond about 1:12 with heavy loads); corridor widths and turn radii at corners; every door’s clear width and height with the door open at 90 degrees; lift (elevator) rated capacity and internal cab dimensions – many Indian commercial lifts are rated 1,000-1,600 kg, marginal or insufficient once you add the crate, jack and two riggers; and floor transitions where castors can dig in. Where an assembled rack cannot pass, plan either partial disassembly (switch trays, PSUs and sidecars shipped separately) or crane access through a facade opening – both need weeks of lead time to arrange. During monsoon months, plan covered unloading: a soaked crate is an insurance argument waiting to happen.
Network drops, cooling and environment
Pre-delivery is when structured cabling should finish: fibre trunk runs from the rack position to the aggregation row, patch panels labelled to the rail map, out-of-band management (1G copper) drops, and every strand OTDR-tested and certified with results archived. If the rack is liquid-cooled, facility water or CDU provisions must be complete and flushed before delivery – see commissioning a liquid-cooled AI rack. Confirm the room holds ASHRAE-recommended conditions (18-27 C, controlled humidity) with the new heat load modelled, not guessed; in coastal and monsoon-season India, dehumidification capacity deserves specific attention because condensation risk rises exactly when deliveries are hardest. Finally, dust: if the room is still under civil works, do not accept delivery – construction dust in server intakes is a warranty-relevant contamination.
Staging, insurance and delivery-day logistics
Reserve a staging area near (not inside) the server room, roughly twice the rack footprint, for uncrating and inspection. Photograph shock and tilt indicators on every crate before opening – transit damage claims die without this evidence. Check insurance covers the goods from truck to final position, including rigging; confirm who owns that leg (vendor, freight forwarder, or you). Book freight lifts and building permissions with your facility manager in advance, keep the integrator’s rigging crew and your facilities team on one schedule, and hold delivery until the room is genuinely ready – hardware ages better in a warehouse than half-installed on a live floor. Once positioned, the flow hands over to acceptance testing and burn-in.
Site readiness checklist
| Area | Verify | Evidence to file | Lead time if failed |
|---|---|---|---|
| Electrical | Feeder/breaker headroom, whips terminated, load bank test passed | Load bank report, thermography of lugs | 2-12 weeks (DISCOM enhancement) |
| Floor structure | Point load and roll path rated for rack + castors | Structural engineer sign-off | 1-4 weeks (plates/reinforcement) |
| Access route | Doors, corridors, ramps, lift capacity vs crate dims | Route survey with measurements | 2-6 weeks (crane/disassembly plan) |
| Cooling | Heat load modelled; liquid loop flushed and ready | Cooling design note, flush certificate | 2-8 weeks |
| Network | Trunks pulled, tested, labelled to rail map | OTDR/certification results | 1-3 weeks |
| Staging/logistics | Staging area, freight lift booking, insurance to final position | Delivery plan, insurance confirmation | Days, but blocks everything |
Frequently asked questions
How early should the site survey happen?
Do a first survey before you place the hardware order – access constraints can change what you buy (rack height, sidecar vs in-rack CDU, pre-integrated vs field-assembled). Repeat a verification walk four to six weeks before delivery, and a final check one week out with the freight forwarder’s crate dimensions in hand.
Our lift is rated 1,000 kg and the rack is 1,200 kg. What are the options?
In practice: ship the rack partially depopulated and reinstall trays on the floor (most integrators support this), use a crane through a facade or terrace opening, or relocate the room to ground floor. Never split the load across the lift threshold or exceed the rated capacity – building lifts fail unsafe and uninsured.
Do I really need a structural engineer for one rack?
For anything over roughly 800 kg on a raised floor or an above-ground slab, yes – it is a short, inexpensive engagement, and the written sign-off matters for insurance. For ground-floor slab-on-grade placement of a single rack, a document review of the slab specification is often sufficient.
What environmental conditions should the room hold before delivery?
ASHRAE-recommended envelope for IT equipment: 18-27 C dry bulb with dew point and relative humidity controlled to the current ASHRAE thermal guidelines class for your equipment. Just as important: civil works finished, room cleaned to a dust-free standard, and access control in place – new GPU hardware is a theft target.
Who should own the site readiness checklist – us or the integrator?
Joint ownership with a single named engineer on each side. The integrator knows the hardware’s requirements; only you know the building. Ask the integrator for their site readiness questionnaire early, answer it honestly with measurements, and attach it to the contract so delivery-day surprises are contractually theirs to share.
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