A plant can have a perfect floor and a well-built shed and still lose money every monsoon because the internal roads break up. Trucks queue, forklifts struggle and water collects at the dock doors. Roads deserve the same thought as the buildings they serve.
Parag Technobuild builds site roads, hardstanding platforms and external development alongside the plants and campuses we construct. This article explains the layers of a site road, how to choose the surface, and what we have seen work on real projects.
What sits under a road
Every road, whatever its surface, is only as good as the layers beneath it. A typical plant road is built up like this:
- Prepared subgrade — the natural ground, levelled and compacted. Poor subgrade is the root of most road failures.
- Granular sub-base (GSB) — graded crushed stone and sand that spreads load and lets water drain away.
- Water bound macadam (WBM) — larger crushed stone bound with screenings and water, rolled in layers to form a strong base.
- Surface — bitumen, concrete or interlocking blocks, chosen for the traffic and use.
In India these layers are normally built to the Ministry of Road Transport and Highways (MoRTH) specifications, with pavement thickness designed using Indian Roads Congress guidelines — IRC:37 for flexible (bitumen) pavements, IRC:58 for rigid concrete pavements and IRC:SP:63 for interlocking concrete block pavements.
Choosing the surface
| Surface | Best for | Watch out for |
|---|---|---|
| Bitumen (bitumen macadam / asphalt) | Long internal roads, campus roads, lighter vehicles; quick to lay and repair | Softens under standing trucks and spilled oil; needs good drainage |
| RCC / concrete road | Heavy trucks, container movement, dock approaches, areas that stay wet | Higher first cost; joints must be designed and sealed; slower to repair |
| Interlocking concrete pavers | Parking, yards, walkways, areas where services may need to be dug up | Needs firm edge restraint (kerbs) and a well-compacted base |
| Grass pavers | Overflow parking and fire-tender access where you also want green cover | Not for constant heavy traffic |
| Tremix (vacuum-dewatered concrete) | Shed floors and heavy-duty yards needing a hard, dense concrete surface | Needs proper joint cutting and curing |
Most sites end up with a mix: concrete where trucks stand and turn, bitumen for longer runs, and pavers for parking and walkways.
Drainage decides how long a road lasts
Water is the enemy of every road layer. Before the surface is chosen, settle the levels and the drainage: cross-falls that take water off the carriageway, RCC drains with covers along the edges, and MS gratings at the crossings and dock doors. A road on a well-drained base will outlast a thicker road sitting in water.
What we built and why
India Exposition Mart, Greater Noida. We built an 8,400 sqm hardstanding platform, with a civil package for a prefab shed and a toilet block. The work included dismantling an existing structure, GSB, WBM, bitumen macadam, interlocking paver flooring, grass paver flooring, RCC drains with covers, MS gratings and fire-fighting works. It was worth ₹5.90 crore and took six months.
Galgotias University, Greater Noida. Our scope included about 2 km of RCC and bitumen road on the campus, along with an electrical station building with DG foundations and RCC trenches, an OPD building, toilet renovation and stone cladding. The package was worth ₹12.25 crore over six months.
Vert Equipment, Greater Noida. Alongside a 6,500 sqm factory shed, we laid GSB and WBM, Tremix flooring, interlocking paver flooring and RCC drains with covers and MS gratings.
A note on pavers: Satya Raj Industries, part of the Parag Technobuild group, manufactures interlocking pavers, grass pavers, concrete tiles and kerb stones at Aligarh. Having the manufacturer and the contractor in one group makes it simpler to match block type and kerb details to the traffic on each part of the site.
Checklist before you finalise site roads
- Map the traffic: which areas carry trucks, which carry forklifts, which carry only cars and people
- Get a soil report for the road areas, not only for the building
- Fix finished levels for roads, docks and floors on one drawing
- Design drains and gratings before choosing the surface
- Plan service crossings now — sleeves under a new road cost little; cutting a finished road costs a lot
- Use pavers where future digging is likely
