Hong Kong international school campus stone works
School & Education | Education

Hong Kong International School K-12 Campus — Stone Works

15,000 ㎡ · Rounded, fall-safe detailing · Delivered in summer holiday windows

Project Overview

Project Overview

A Hong Kong international school K-12 campus — 15,000 ㎡ of public-area stone facing three challenges: fall safety for 3,000 students, construction squeezed into summer holidays, and long-term wear. HENGSHENG MARBLE S&T CO. LIMITED Stone delivered everything across three summer windows.

📍
Tai Po, Hong Kong
Location
📐
15,000 ㎡
Stone Installed
📅
3 summer breaks
Delivery Period
💎
4
Stone Varieties
🏛️
P+W Architects
Design Firm
🎓
K-12
International School
📏
R=10 mm
Rounded-edge safety standard
100%
Parent satisfaction
K-12 campus exterior
International School K-12 · A campus community of 3,000 students

Design Concept · Safety × Inspiration × Nature

The campus is built on "nature inspiring learning": the main entrance and reception lobby shape a sense of belonging with warm Crema Marfil; the teaching corridors and library use Silver Grey Granite for visual unity, noise reduction and wear resistance; the specialist and art studios take Carrara White as their clean keynote — three principal stones bringing safety and inspiration to every learning space on campus.

HENGSHENG MARBLE S&T CO. LIMITED Stone supplied and installed the 15,000 ㎡ of public-area stone: every external edge rounded to R=10 mm and machining compatible with underfloor heating, with all works completed in three summer windows — no classes were ever interrupted.

Applications

Main Entrance LobbyLibraryTeaching CorridorsSpecialist ClassroomsArt StudioMusic RoomsSports HallScience LaboratoriesCafeteriaOutdoor Courtyard
Materials

Stone Selection

Three principal stones cover every learning scenario across the K-12 campus, unifying safety, wear resistance and visual calm.

Crema Marfil stoneMATERIAL 01
Crema Marfil
🇪🇸 Spain · Alicante quarries
ApplicationMain entrance · Reception lobbyFinishHoned + rounded arrises · 18 mmStandard Sizes2800×1500 mm slabs
A warm beige ground with light hazel veining — the warmest stone on campus. Twenty-four slabs from a single vein were pre-assembled by veining, and every external edge rounded to R=10 mm. 5,200 ㎡ supplied.
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Silver Grey Granite stoneMATERIAL 02
Silver Grey Granite
🇧🇷 Brazil · Capão Bonito quarries
ApplicationTeaching corridors · Library · CafeteriaFinishBush-hammered + anti-slip · 25 mmStandard Sizes3000×1500 mm thick slabs
Dense, wear-resistant silver-grey granite with 18 MPa flexural strength; the bush-hammered R10 finish suits corridors used intensively by 3,000 students. 7,800 ㎡ supplied — the campus's highest-volume stone.
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Carrara White stoneMATERIAL 03
Carrara White
🇮🇹 Italy · Carrara quarries
ApplicationSpecialist classrooms · Art studio · Science laboratoriesFinishHoned · 12 mmStandard Sizes2800×1500 mm slabs
Quiet, fine light-grey veining with a honed finish that softens light without glare — the friendliest tone for reading and precision work. 2,000 ㎡ supplied for all specialist classroom worktops and walls.
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Construction

Construction Process

Six stages from 3D scanning to staged summer delivery — 15,000 ㎡ completed in three 8-week windows, with no classes disrupted.

01

3D Scanning

3D Scanning

360° laser scanning of 12 teaching buildings produced millimetre-level point clouds, resolving 186 structural deviations in advance.

02

Summer Preparation

Summer Preparation

Nano-level substrate levelling with pull-off adhesion beyond 0.8 MPa, leaving a 6-day buffer before the term began.

03

Factory Fabrication

Factory Fabrication

Five-axis CNC machined every rounded edge and arris; each R=10 mm edge passed 100% inspection before packing and dispatch.

04

Protective Packing

Protective Packing

All rounded edges reinforced with protective film and foam; zero breakage in transit and zero risk to students.

05

Summer Works

Summer Works

Noisy trades ran 22:00–05:00 in July–August; quiet trades by day; full-area cleaning and acceptance finished 3 days before the term started.

06

Full-area Grinding

Full-area Grinding

Public areas ground and crystallised as one: flatness ±1.5 mm, gloss 85°, stain resistance grade 5.

Installation Details

Installation Details

Craft details up close — in a K-12 campus, safety lives in every surface a student touches.

Rounded Edges

Rounded Edges

Every external corner rounded to R=10 mm with 2 mm arris chamfers; no cracking after 10,000 impact tests.

Anti-slip Treads

Anti-slip Treads

Stair nosings inset with brass anti-slip strips plus R=5 mm rounded stone edges, meeting child-safety standards.

Dual-height Handrails

Dual-height Handrails

Stairs fitted with dual handrails (adult 900 mm + child 600 mm); metal-to-stone junctions padded for impact protection.

Movement Joints

Movement Joints

Teaching corridors have movement joints at 6 m centers to absorb day-night temperature swings and crowd loads, preventing stone tenting.

Impact-resistant Corners

Impact-resistant Corners

Classroom corners inset with 1.2 m stainless-steel bump rails finished with stone trim; no deformation after 50,000 impact tests.

Courtyard Drainage

Courtyard Drainage

Outdoor courtyard channels use stone grates with stainless-steel liners — no standing water or splash underfoot in the rain.

Technical

Technical Highlights & Solutions

Safety for 3,000 students, holiday-window delivery and budget control — HENGSHENG MARBLE S&T CO. LIMITED Stone answers with data.

🛡️
CHALLENGE 01

R=10 mm rounded edges for child safety

3,000 K-12 students use the campus intensively every day; conventional right-angled corners and stair nosings easily cause bumps and trips.

Solution: All external edges rounded to R=10 mm, arrises chamfered 2 mm and anti-slip strips inset; inspected on site with the parents' committee and fully passed child-safety testing.
☀️
CHALLENGE 02

Three summer windows, no classes missed

Teaching could not be interrupted — all works had to fit into July–August windows of just 8 weeks each.

Solution: 95% of the work pre-assembled in the factory plus rapid on-site assembly; 15,000 ㎡ completed across three summers, with 100% parent satisfaction on the first day of term.
🧽
CHALLENGE 03

Wear resistance for 30,000+ daily passages

Teaching corridors see 30,000+ student movements a day; ordinary stone quickly wears dull.

Solution: Silver Grey Granite with bush-hammered finish plus siliconised crystallisation, stain resistance grade 5; no visible wear at the three-year follow-up visit.
💡
CHALLENGE 04

Visual comfort in specialist rooms

Libraries and laboratories are sensitive to glare and visual fatigue; highly reflective stone strains the eyes.

Solution: All specialist rooms use honed Carrara White — soft, glare-free light; student visual-fatigue surveys showed a 28% improvement in comfort.
R=10 mm
Rounded-edge standard
7,800 ㎡
Granite flooring
3 summer breaks
Staged delivery
100%
On-time for term start
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