Kollam Railway Station
Indian Railways / RLDA · Kollam, Kerala · MegAtec 300, 360 and 610
Metro & rail · Seismic Zone III
A station redevelopment on the Kerala coast, where the rain and the salt decide more than the movement calculation does.
| Client | Indian Railways / RLDA |
|---|---|
| Location | Kollam, Kerala — Seismic Zone III under IS 1893 |
| Sector | Metro & rail |
| Gap range | 100 mm |
| Scope | Design of the joint schedule, manufacture in India, and installation by our own crews |
Systems supplied
MegAtec 300Foot and light traffic, ADA-compliant surfaceMade in IndiaFloor
MegAtec 360Wall, corner and ceiling, gaps 25–200 mmMade in IndiaWallCeiling
MegAtec 610External centre-plate roof joint, gaps 25–300 mmMade in IndiaRoofHow we knowThree dispatches between January and August 2025. Gaps and systems are taken from the production and dispatch records for this job, not from a catalogue. Section drawings are illustrations, not shop drawings.
What this building needed
A 100 mm gap covered three ways
MegAtec 300 on the floors, 360 where the joint turns up a wall, 610 where it crosses the roof. A station's joint does not stop at the skirting — the wall, ceiling and roof continuations are the locations most often missed at tender and most often improvised at fit-out.
Kerala's exposure is sustained wetting, not occasional rain
High humidity and a long heavy monsoon mean the waterproofing membrane and its termination do more work than the metal above them. A joint that is watertight on paper and terminated badly on site leaks in the first season.
Public transport interchange, so the surface is the specification
Continuous footfall with luggage and trolley wheels crossing the line all day. Flush and trafficable is not a finish preference here, it is the functional requirement.
Related: expansion joints for metro rail · how the gap width is calculated · what the seismic zone changes.
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Send GFC or concept drawings and we will return a location-by-location joint schedule, with the gap, the system and the movement class named.