Solution — Hospitals & healthcare
Utility Survey for Hospital Projects: Power and Oxygen
Before a new block, oxygen plant or road goes in, we map what feeds the wards, quietly, in shifts that suit a working hospital.
Quick AnswerA utility survey for hospital projects locates buried power cables, generator feeds, medical gas lines, fire mains, water, sewage and data ducts around planned works. Each line is graded by how certain its position is, so an expansion never interrupts a ward. The grading follows the method explained in about SUE survey.
What makes a utility survey for hospital sites different?
A hospital cannot switch anything off for long, and the people most affected by a mistake are patients who cannot move. The survey therefore has two jobs: find every service that matters with real confidence, and do it without disturbing clinical work. A cable strike in an office park spoils an afternoon; on an ICU feeder with a failing generator, it is a far graver event.
Hospital campuses are also old, crowded and rebuilt in pieces. A district hospital may have blocks from four decades, each with its own generation of cables and pipes, while private hospitals expand wing by wing on tight plots. The drawing of underground utilities, if one exists, is seldom complete.
Which services matter most, and how are they found?
Start with the ones that keep patients alive, then the ones that keep the building legal and running.
| Service | Why it matters | How we locate it |
|---|---|---|
| HT feeders and generator cables | Power to theatres, ICUs and life-support equipment | Locator by induction, GPR, chamber checks |
| Oxygen and medical gas lines | Supply from liquid oxygen tank or oxygen plant to blocks | Records, GPR, trial pits where pipes cross works |
| Fire hydrant ring | Fire safety compliance and evacuation | Locator on metal pipe, valve and hydrant positions |
| Water supply and storage feeds | Clinical hygiene, dialysis, laundry | Locator, GPR for plastic pipe |
| Sewer and effluent lines to STP or ETP | Infection control and pollution consent | Manhole inverts, GPR, sonde in pipe |
| Data, nurse-call and CCTV ducts | Hospital information systems and security | GPR, duct rodding |
Table note: if the expansion raises a boundary or title question, see questions to ask before land survey services before design goes further.
Oxygen deserves a special word. Many hospitals added oxygen generation plants or larger liquid oxygen tanks in a hurry during 2021, and the connecting pipes were sometimes buried quickly, with little record. Where those pipes run below ground, our utility locating treats them as the highest-priority line.
How sure is each line? Quality levels explained
Every line carries a quality level, from an unverified record to a pipe we have seen. The label tells your architect and contractor which lines they can design beside and which need a trial pit first.
On a typical hospital job, most of the campus is brought to QL-B, meaning a measured position and depth from two instruments. Utility lines crossing a new foundation, basement wall or feed route go to QL-A through a supervised hand-dug or vacuum excavated trial pit.
A typical sequence for a new hospital wing
Five short stages, planned so that clinical work sees almost nothing of the survey.
- Meeting with the estate team: We review existing drawings, the planned footprint, service connections and the free times for each zone. The engineering head names who can isolate or confirm a service, which keeps utility coordination simple.
- Walk-down and surface record: Every valve box, manhole, hydrant, cable marker and chamber near the zone is fixed by total station and photographed.
- Instrument survey: Locator tracing and a radar grid cover the footprint, its existing utility corridors and the construction access route, in early-morning or late-evening blocks.
- Review and trial pits: A draft drawing goes to your architect within days. Together we choose trial pit spots for the hospital's contractor to dig under our supervision.
- Final drawing: The drawing, with confirmed grades, is issued for design and the excavation plan.
Working around patients, ambulances and infection control
The survey is planned with the hospital's engineering head and, for indoor work, its infection control team. Ambulance bays, emergency entrances and drop-off areas are surveyed at the quietest hours, often early morning, with a security marshal. The instruments make no noise or vibration, which helps near wards. Crews keep to agreed routes, never block fire lanes and pack away at every break. Inside buildings we follow the hospital's rules on barriers, dust and clinical access.
Floors and walls: scanning before a core cut
New medical gas risers, drain lines and cable trays often need holes through existing slabs, and radar is the safe way to choose where to drill. A scan of the slab shows reinforcement, embedded conduits and, in some newer buildings, post-tensioning tendons, which must never be cut. Our concrete scanning service covers the method; inside a theatre or ICU block we do it during the planned shutdown for the change itself.
Older blocks hide conduits for merged wards, abandoned gas lines and floor trenches concreted over in a refurbishment. Scanning a band around each proposed core, not only the point, lets the engineer shift the hole a few centimetres off a bar or conduit.
Drawings, records and the next expansion
The output is a layered drawing your estate team can keep, not a one-off report. The utility data sits on separate layers by service type, with depth notes and grade, in site coordinates or WGS-84. Our note on CAD and GIS utility mapping explains layers and formats. When the new block's services are laid, an as built survey for your site records them before backfilling, so the next team inherits current utility records. Before digging outside the boundary wall for a gate or sewer connection, register the work; there is more on Call before You Dig in India in our guide.
Rates, minimums and timing
Hospital surveys are priced like other utility work, per metre of scan line, with supervised trial pits and off-hours shifts quoted as separate items. The GPR scan is ₹24 per metre as standard and ₹32 per metre where a longitudinal section is drawn. The minimum order is ₹50,000 in Delhi NCR and ₹1,00,000 elsewhere. Large multi-campus programmes earn 25% off above 100 km, 40% above 500 km and 50% above 1,000 km. GST is extra.
Example: a new wing needing 2 km of scan lines works out at 2,000 × ₹24 = ₹48,000, so the NCR minimum of ₹50,000 applies. Field work takes two to three days around clinical hours, and drawings follow within three working days. NCR crews reach the hospital the same day or within 1 working day; outside NCR, a surveyor living locally starts within 1 working day at most. Any mobilisation or travel cost, if applicable, is shown in the quote. To agree shifts and access, speak to an engineer.
Frequently asked questions
Will the survey disturb patients?
No, both geophysical methods we use are silent and do not vibrate. We work in agreed zones and times, away from patient movement where possible.
Can you find plastic oxygen or water pipes?
Plastic water pipes are found by ground penetrating radar, which reads the echo a pulse makes at any change in buried material. Medical oxygen lines are copper or steel, which helps location; trial pits confirm crossings.
Do you open manholes on a hospital campus?
Only with the estate team's permission and gas-safety precautions, because sewer chambers near STPs can hold harmful gases.
How long does a hospital utility survey take?
Most single-wing jobs need two to four field days, arranged around clinical hours, with drawings within three working days.
What file do we get at the end?
A layered DWG and PDF with depth notes and quality levels, plus a report; see our GPR survey deliverables guide for a sample.
Can you survey a government hospital?
Yes, when the hospital or its engineering department appoints us or permits the work under the project contract.
Get a written quote for your hospital site
Services used at hospitals
Written by Saniya Parveen · Technically reviewed by Rahul Rai · Updated 8 November 2026