Metro & Rail | Metro
Metro Interchange Station Stone Works
23,000 ㎡ · Night possession works · Full tactile-paving coverage
Metro interchange station stone works — a 23,000 ㎡ three-line interchange hub covering concourse, platforms, transfer corridors, entrances, control rooms and the forecourt. Unlike ordinary public buildings, metro works can only proceed in roughly two-hour nightly possession windows after last train: 480,000 daily passengers, the trackside red line and mandatory fire and slip-resistance standards form a triple constraint. HENGSHENG MARBLE S&T CO. LIMITED Stone completed 120 possession nights with factory pre-fabrication plus night-time dry assembly — zero operator complaints since opening.
The interchange's stonework is built around "order and durability": platforms and transfer corridors use bush-hammered Silver Grey Granite with wet-state slip resistance of R11 under heavy footfall; the concourse walls carry Pietra Grey, its dark ground and white diagonal veins reinforcing wayfinding legibility; and the tactile guidance system plus platform edges use flamed Sesame Black Granite — three stones that write "safety, wayfinding, durability" into every square metre.
HENGSHENG MARBLE S&T CO. LIMITED Stone undertook the full stone design development, supply and installation for the 23,000 ㎡: 9,800 ㎡ platform paving, 6,200 ㎡ transfer corridors, 4,500 ㎡ concourse walls and columns, and 2,500 ㎡ of entrances and forecourt. Every piece was drilled, arrised and six-side protected in the factory for dry site assembly, with a single possession night achieving 260 ㎡ of paving; the 120 possession nights finished 4 nights early with a 100% first-pass inspection rate.
Three principal stones cover the interchange's three functional scenarios: heavy-traffic slip resistance, wall wayfinding and barrier-free guidance.
All 14 photographs are as-built records of the completed areas. Click any image to view the stone details enlarged.
Six stages from 3D survey to dawn reopening — 120 possession nights, two hours each.
Laser scanning and modelling of the 23,000 ㎡ interior, reconciled against the civil structure into 3,400 fabrication drawings; all special-shaped pieces pre-assembled and verified in the factory.
Platforms, corridors and tactile bands set out to a modular grid with joints aligned to wayfinding lines; 3,400 shop drawings passed a single three-party review with client, designer and engineer.
All slabs cut, arrised, tactile-dotted and six-side protected in the factory; zero site cutting and zero wet trades — pieces arrive ready to assemble.
Crates numbered by "possession segment", each night's delivery matched exactly to that night's work content; zero logistics delays across 26 months.
Site entry 23:50, exit 04:50, 260 ㎡ of dry-laid paving per night; trackside works under strict red-line control with zero intrusion events.
40 minutes before first train: vacuum cleaning, piece-by-piece re-tightening, then slip and tactile verification; all 120 possession nights opened on time.
Rail-transit craft up close — slip resistance, tactile guidance and movement joints hide in the millimetres.
Blister studs 4 mm and corduroy ribs 5 mm proud, spacings tool-cast to ±0.5 mm of rail specification; the tactile network runs continuously with no gaps.
Platform surfaces reach wet pendulum BPN ≥65, anti-slip grade R11; zero slip-fall complaints in peak rain since opening.
Tread nosings carry brass anti-slip inserts 2 mm proud of flamed stone edges; all 13,000 treads re-checked with zero looseness.
Structural joints re-cut at 6 m centers with elastic sealant, absorbing train vibration and thermal swing; zero hollow spots or tenting in 18 months of service.
Platform-edge drainage channels pre-cast as integral stone units at a precise 0.5% fall; zero ponding even on Black Rainstorm Warning days.
Columns clad on steel sub-frames with rounded R50 solid-stone bends; zero loosening or panel loss under daily piston-wind loading.
All three principal stones of this project are kept in stock for rail-transit-type works. Click through for the full product range.
The platform and corridor's own slip-resistant stone; 18,000 ㎡ of 30 mm thick slabs in stock for rapid rail-transit delivery.
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The concourse wall and column's own stone; 9,000 ㎡ in stock, mirror-polished or honed.
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The tactile system's own flamed stone; 6,000 ㎡ of modular sizes in stock with tactile tooling ready to run.
View details →Night possession windows, 480,000 daily passengers and mandatory barrier-free standards — HENGSHENG MARBLE S&T CO. LIMITED Stone answers with data.
Only about two hours after last train are available; entry, delivery, paving and cleaning must all fit inside the window or the first train is delayed.
Interchange stone endures constant footfall and luggage drag; ordinary stone loses its finish within two years.
Tactile paving must run continuously without gaps, with stud heights and spacings to specification, without becoming a trip hazard.
Below-grade stations require Class A non-combustible finishes, and the damp platform environment demands efflorescence-proof stonework.
Whatever the scale of your project, our engineering consultants will tailor the optimal stone solution for you — from material selection through to handover, with one-to-one service throughout.
Thank you for your enquiry. Our engineering consultant will contact you within 24 hours.
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