HT/LT Cable Route Survey Checklist for Vadodara Contractors

Updated: 23 October 2026

How should a contractor use this HT/LT cable route survey checklist?

Most problems on a cabling job trace back to something nobody checked before the excavator arrived. This HT/LT cable route survey checklist is written for site engineers and project managers working in Vadodara, and it follows the order in which the work actually happens: preparing the route, understanding what will be scanned, ordering the survey, and checking the record before digging starts.

Print it, take it to the route walk, and tick each item. Where an item does not apply to your job, strike it out rather than skipping it silently, so the next person reading the file knows it was considered. For rates, the method and what the full survey contains, our Vadodara HT/LT cable route survey page is the companion to this checklist.

What is an HT/LT cable route survey?

It is a non-destructive survey of the ground along the path a new power cable will take, done to find the services already buried there. Ground penetrating radar (GPR) picks up pipes, ducts and cables of any material, and an electromagnetic cable locator traces metallic utilities by their signal. Each detected line is marked on the surface with its approximate depth and logged against the route.

The survey looks a little different for the two cable classes:

• HT routes (11 kV feeders and above) are usually longer, follow main roads, meet more crossings, and are often laid deeper or bored under obstacles. Depth reached by the radar matters most here.
• LT routes are shorter and branch into lanes, society roads and service connections to buildings. Services are packed closer together, so the scan grid is tighter and progress per shift is slower.

Many Vadodara jobs mix both, with an HT feeder along a main road and LT power distribution fanning out into side streets. Plan the survey to match that split.

Why does a Vadodara route need such careful checking?

Vadodara packs almost every setting in which a cable contractor meets underground utilities into a short distance:

• Corporation roads carrying Vadodara Municipal Corporation water mains, sewers and storm drains alongside gas, telecom and street-lighting lines.
• The walled city around Mandvi, where lanes are narrow and services have been added in layers.
• The Vishwamitri river and its channels, which cut across many east–west routes and can be waterlogged in the monsoon.
• Major corridors – NH-48, the Ahmedabad–Vadodara Expressway and the Western Railway main line through Vadodara Junction – where crossings are usually bored.
• Industrial estates at Makarpura, Nandesari, Waghodia, Savli and Por, with process and effluent lines under estate roads.
• Pipeline corridors crossing the district, where the operator's consent is a separate requirement from road permission and each crossing should be listed as its own item.

Each of these needs different handling, which is why a single generic instruction to the surveyor rarely produces a useful record. The rest of this checklist breaks the job into those situations.

Which route types should the checklist separate?

Main-road HT feeder stretches

• Confirm the side of the road and the offset from the kerb the designer intends to use.
• Identify junctions, culverts and medians where the route changes side or crosses.
• Note bus routes and market stretches that may need night-only scanning.

LT lanes and service branches

• List lanes too narrow for a radar cart, which may need hand-held scanning.
• Mark building entries where service connections will branch off.
• Record society gates that need committee permission to enter.

Estate connections

• Get the plant's permit requirements, induction and safe working hours in advance.
• Ask for the estate or plant drawings of process and effluent lines. Our Makarpura GIDC and Nandesari GIDC pages explain estate conditions.

Bored crossings

• Mark each highway, rail, river channel or drain crossing with its entry and exit pit locations.
• Note the intended bore depth so the report can state whether the radar reached it. Our Vadodara HDD route survey page covers this step.

Which survey terms should the site engineer know?

• Depth reading: the approximate depth to the top of a detected line, worked out from the radar echo. In Vadodara's alluvium with moderate clay, typical radar reach is 2.5–3.5 m in open ground, per Mezux notes; wet patches reduce it, because higher moisture content increases signal attenuation, the weakening of the radar wave in soil.
• Clearance: the gap the new cable must keep from an existing service when it passes over, under or beside it, as set by your design or specification.
• Marking colour: the paint colour used for each service type. Agree the scheme with the surveyor; a common convention is red for power, orange for telecom, yellow for gas, blue for water and green for drainage.
• Unknown service: a line detected but not identified. It is kept on the record and must be confirmed before anyone cuts it.
• Priority stretch: a length your gang will dig first, scanned and marked ahead of the rest.
• Bore path: the planned line of an HDD bore between its entry and exit pits, scanned as a separate record.

Checklist: what should a sound Vadodara route survey deliver?

• Scan lines along the full route and across it at regular spacing, with added passes at junctions and crossings.
• Electromagnetic checks on conductive lines that radar detects, so each underground cable is confirmed by two methods where possible.
• Ground marks with depth written beside each, readable by the excavator operator.
• A record of each crossing on its own, with the depth reached at that point.
• A list of stretches not scanned – parked vehicles, locked gates, flooded patches – with the reason.
• A signed report stating method, coverage, depth reached by section and limitations.
• An L-section, if your work order asks for a depth profile. Our Vadodara L-section survey page explains that option.
• A crew with its own systems: Mezux Touch fields 58 company-owned GPR systems and in-house staff, so dates are not tied to hiring a machine.

Checklist: how should you plan and order the survey?

1. Route file ready: KML, CAD route or a road list with start and end points for every section.
2. Clauses extracted: copy the survey, excavation and submission clauses from your work order.
3. Road owners listed: Vadodara Municipal Corporation for city roads, the state roads department or NHAI on highway stretches, GIDC and individual plants inside estates.
4. Working windows known: night-only roads, school zones, market days and plant shutdown dates.
5. Budget checked: ₹24 per metre for a standard survey or ₹32 per metre with L-section, a 4 km minimum length and, because Vadodara is outside Delhi NCR, a ₹1,00,000 per-project minimum. Above 100 km the whole order is 25% cheaper, above 500 km 40% and above 1,000 km 50%.
6. Separate items noted: mobilisation, night-shift work, traffic arrangements and permissions, and CAD/GIS drawing sets are priced outside the per-metre rate; GST is extra.
7. Priorities marked: tell the surveyor which stretches your gang digs first.

Send the lot through our quote request form or call +91 99100 10209.

Checklist: what should you check after the survey and while digging?

• Walk the route with the report in hand and confirm that the marks on the ground match it.
• Check that every crossing on your list has its own record and stated depth.
• Read the unscanned list and arrange hand checks or a revisit before those stretches are dug.
• Ask for trial pits where clearance is tight; record what each pit found.
• Brief the excavator operator on unknown services and hand-dig zones before the shift.
• Repaint marks that have faded or been driven over before digging resumes.
• File the report with the as-built record of the new cable, noting any change of alignment.
• Keep this ticked checklist in the same file; it shows what was considered, by whom and on which date.

For one-off pits, foundations or short trenches along the way, our pre-excavation scanning in Vadodara page describes the spot-scan service.