Underground Utility Survey in Kohima

Updated: 23 October 2026

What is an underground utility survey in Kohima, and who needs one?

An underground utility survey in Kohima is a non-destructive check of the ground beneath a planned trench, pit, foundation or bore, done before anyone digs. It tells designers and builders which cables, pipes, drains and ducts are already in the way, roughly how deep they lie, and where the picture is uncertain.

Electrical and civil contractors laying feeders or water lines, telecom firms planning duct routes, consultants designing for a government department and builders excavating a terraced plot all commission one. Nagaland's capital sits on steep slopes, so roads follow the contours and most underground utilities crowd into the same few corridors – reason enough to survey even a short job.

Mezux Touch does this with company-owned ground penetrating radar (GPR) and electromagnetic locators, run by our own crews travelling from Faridabad. Booking details are on our Kohima GPR survey page; this guide covers planning and reading the results.

Why check below ground before opening a Kohima road?

Most strikes follow trust in an old drawing, a memory or a guess, and on a hill road the damage weighs more than in a flat town:

• Few alternative routes. If a dig closes part of a contour road during a repair, traffic may have no practical way round.
• Shared narrow verges. Water lines, power cables, drains and telecom ducts are often packed side by side, so one careless bucket can damage several owners' assets.
• Ground that changes within metres. Cut rock uphill and placed fill downhill make depth hard to predict from one point to the next.
• Records that lag behind the ground. Repairs, diversions and new connections do not always reach the master drawings.

A survey turns an unknown into a marked, reported position and shows the designer where a route will be tight before money goes into materials. Our post on utility mapping and strike prevention sets out the wider case.

Which kinds of underground utility survey can be ordered?

One order can combine several of these.

Route survey

Radar and EM passes follow the full alignment of a new cable, pipe or duct, with cross-lines wherever services may cut across it.

L-section survey

The route survey plus a depth profile of each detected service, at ₹32 a metre rather than ₹24 – useful when a new line must keep clear of existing ones.

Area or crossing survey

A grid over a plot or yard catches services entering from the road above or below a terrace; close scanning of a bore path and both pits prepares a trenchless crossing under a road, drain or culvert.

Verification and fault work

A trial pit or borehole can confirm a design-critical depth. Locating the fault on an already failed underground cable needs different equipment and is quoted on its own.

How should the technical terms in a survey scope be read?

• Detected service – a line the radar or locator actually recorded, as against a recorded service that appears on a drawing but may not have been found.
• Radar reflection – the curved trace a pipe or cable leaves on screen as the antenna crosses it; the top of the curve marks the line.
• Depth estimate – radar times the GPR signal's return trip and converts it using an assumed speed through local soil, which depends on its dielectric properties; hence depths are approximate.
• Line spacing – the gap between parallel scan lines; tighter spacing catches smaller targets but takes longer.
• Confidence note – a remark on how sure the crew is about a find, for example a strong EM signal paired with a faint radar trace.
• Unscanned stretch – any length the crew could not cover, with the reason, such as a parked vehicle or a sheer drop.

For a fuller comparison of the two main instruments, read EM cable locator vs GPR.

What qualities should Kohima engineers ask for in the deliverable?

1. Ground marks an excavator can follow, in utility colours, above every find.
2. Positions tied to fixed features – kerbs, culverts, poles, building corners – since vague descriptions fail on a winding road.
3. Depth reach section by section. Slope, fill and moisture content vary here, so one survey depth figure for a whole route is a warning sign.
4. Both instruments in use. Radar sees plastic and metal; EM utility locating confirms which metallic utilities conduct and often which are live.
5. A signed report from direct crews on owned equipment – our 58 GPR systems and 18 HDD rigs belong to the company, and nothing is sub-let.

How do you plan a survey for a hill capital, step by step?

1. Define the purpose. State what will be built and the depth it needs; that decides whether a route, L-section, area or crossing survey fits.
2. Collect existing records. Ask the Department of Power, Nagaland for cable information, the Kohima Municipal Council for street and drain works, and Kohima Smart City for recently upgraded streets; telecom operators keep their own duct records. Mezux Touch is not affiliated with any of these bodies; the client requests records and permissions from them.
3. Settle access. Road-working permission and traffic arrangements are the project owner's to organise and are billed apart from the survey rate.
4. Agree the programme. Dates and mobilisation from Faridabad are planned with you before anyone travels; we promise no travel time in advance, and mobilisation is its own quote line.
5. Group the work. Bundling every ready stretch, plus any other North-East work, lets one trip serve it all.

Other capitals handled the same way are listed on our state capitals survey hub.

What will the survey cost, and what is billed on top?

Charges are set per metre of route. A standard survey is ₹24 a metre, or ₹24,000 a kilometre; adding the depth profile of an L-section takes it to ₹32 a metre. Anything shorter than 4 km is billed as 4 km. Because Kohima lies far outside Delhi NCR, a ₹1,00,000 floor also applies to each project. GST is charged in addition.

• A 3.5 km street, standard survey: billed as 4 km (₹96,000), then lifted to the ₹1,00,000 project floor.
• A 6 km feeder route: ₹1,44,000 as a standard survey, or ₹1,92,000 with an L-section.
• A 120 km state-wide programme: the whole order falls by 25%, giving ₹21,60,000 for standard survey.

The discount rises to 40% past 500 km and 50% past 1,000 km, always applied to every metre. Mobilisation, night working, traffic arrangements and CAD/GIS drawing sets sit outside these figures and are priced separately. The slab table is set out on the GPR survey price list.

How should survey records be kept once the work is finished?

• File the signed report with the project documents, because rain and traffic erase hill-road paint within days.
• Note what you exposed – the real depth and position of any line uncovered, beside the survey estimate.
• Add your new line as an accurate as-laid position and send copies to the owners whose services were found.
• Re-mark before delayed work; a revisit costs far less than a strike.

Findings can also be turned into CAD or GIS layers, quoted separately; our note on survey deliverables explains the options.