// Case Study Archive
Project Record
Four completed works — from standard overlay to full-depth reconstruction under live traffic. Each study includes mix specifications, compaction test results, and final survey.
Changi Logistics Park — Phase 3 Carpark
Full carpark construction for a new logistics annexe at Changi South, serving heavy goods vehicles up to 40T. Designed to LTA Category 4 loading with reinforced binder course.
Site Challenge
Site drainage gradient constrained by adjacent drain reserve — required custom 1:75 cross-fall profiling across all 312 lots to achieve standing-water clearance within 15 minutes of rainfall.
Area
18,400 m²
Duration
22 working days
Type
New Carpark Construction
Sub-base preparation · CBR 15%
DG20 Binder Course · 60mm
AC14 Wearing Course · 40mm
Mix Specification
Compaction Test Result
98.4%
Handed over 3 days ahead of programme. Site engineer sign-off on first inspection — no remediation required. CWT commenced operations within 24 hours of practical completion.
Tuas Megahub — Yard Road Rehabilitation
Night-only rehabilitation of primary yard access roads at Tuas Megahub — 14 consecutive midnight-to-5am windows to avoid disrupting 24-hour container terminal operations.
Site Challenge
Live terminal operations required complete lane reinstatement by 0530 each morning. Wirtgen W210i milling and Vögele paving had to be sequenced across a 320m working front within a 5-hour window.
Area
34,200 m²
Duration
14 nights
Type
Road Rehabilitation · Milling & Overlay
W210i Milling · 80mm depth
SMA14 Overlay · 50mm
Compaction · 0300–0500
Mix Specification
Compaction Test Result
99.1%
All 14 lanes reinstated on schedule. Zero terminal downtime recorded. PSA issued commendation for programme management and surface quality exceeding specification.
Ang Mo Kio Town Council — Void Deck & Service Roads
Multi-phase resurfacing programme across 23 HDB blocks — void deck aprons, bin centre access, and service roads. Executed under strict MOM-compliant traffic management with resident notification requirements.
Site Challenge
Simultaneous active pedestrian access, school bus routes, and refuse collection schedules required a 6-phase traffic management plan with 48-hour advance notice to residents per phase.
Area
9,800 m²
Duration
18 working days
Type
Resurfacing · Multi-Phase Live Traffic
Phase 1 TMC Setup
Bitelli SF100C · Void Deck
Thermoplastic Markings
Mix Specification
Compaction Test Result
97.8%
Completed within budget and 2 days ahead of programme. Town council extended contract for further 4 estates on the basis of site management quality.
// Technical Resource
Need LTA mix specifications and maintenance schedules in one document?
Jurong Island Petrochemical Access Road
Full-depth reconstruction of primary access road serving ExxonMobil Jurong Island facility — designed for 60T tanker loading with chemical-resistant surface treatment.
Site Challenge
Jurong Island security zone access restrictions limited crew to pre-cleared personnel. All materials required ExxonMobil HSSE clearance. Chemical spill resistance specified for wearing course.
Area
28,600 m²
Duration
31 working days
Type
Full-Depth Reconstruction
Full-depth excavation · 550mm
Geotextile + CBR Sub-base
DG28 Binder · 80mm
Mix Specification
Compaction Test Result
99.6%
Achieved highest compaction result in Tarmac project history. ExxonMobil HSSE audit gave zero non-conformances. Road opened to full tanker operations on day 31.
// Technical Credentials
Compliance & Capability
LTA_STD
LTA-Approved Mix Designs
All asphalt mixes are formulated and tested to Land Transport Authority specifications — AC14, AC20, SMA14 wearing courses and DG20 binder courses.
MOM_WSH
MOM WSH Compliance
Every site programme is structured to Workplace Safety and Health Act requirements. Dedicated WSH officer on all live-traffic operations.
JTC_REG
JTC Registered Contractor
Approved contractor for JTC industrial estate infrastructure works. Pre-qualified for tender submissions on Tuas, Jurong, and Sembawang plots.
BCA_CERT
BCA Registered (CW01)
Building and Construction Authority Grade CW01 civil engineering registration — qualifying for contracts up to $13M in public sector works.
Fleet
// Technical Resource
Paving Specification Guide
The consolidated technical reference that facility managers search for but rarely find in one document. LTA mix designs, drainage gradients, maintenance scheduling — all in one PDF.
Tarmac Paving Specification Guide
v3.2 · Feb 2026 · 48 pages
LTA-compliant AC14 & AC20 mix design tables
Drainage gradient specifications for carparks (1:80 to 1:60)
Milling depth guide for overlay vs full-depth reconstruction
Binder and wearing course thickness charts by traffic loading
Compaction test pass/fail criteria and testing intervals
Maintenance scheduling — crack sealing, patching, resurfacing cycles
MOM-compliant live-traffic management plan template
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