Hillside earthworks contractor in Malaysia.
Infraconcrete Construction Sdn Bhd is a CIDB Grade G7 hillside earthworks contractor across Malaysia. We turn sloping and hillside ground into stable, buildable platforms: platform cut and fill, benched terracing, and cut slope formation with immediate stabilization, on tropical residual and lateritic soils. 23 client projects delivered 2022 to 2026, including hillside township and platform earthworks. Every cut and fill face is stabilized as the works proceed, so hillside earthworks is delivered as one scope with retaining and slope stabilization, not handed to a separate contractor once the ground is already open. ISO 9001:2015 certified, built to BS 6031, JKR-SPJ Section 2, and MS 1227.
Turning hillside ground into buildable platforms.
Platform cut and fill on sloping terrain
Transforming natural hillside ground into level, buildable platforms. Cut and fill modelled to the consultant's platform levels, staged benched excavation, engineered fill in 200 to 300 mm lifts to 95 to 98 percent MDD. Haul planned around hillside gradients, restricted access, and wet-weather stand-down.
Benched terracing for hillside development
Stepped terrace platforms for hillside residential, cluster housing, and mixed development. Each terrace is cut and then retained or battered at a safe angle, with fill keyed into competent ground. Coordinated with retaining wall and slope stabilization scope so terraces are stable as they are formed, not after.
Cut slope formation with immediate stabilization
Cut faces formed to design angle and stabilized as the excavation descends, not left open to the next monsoon. Soil nailing, shotcrete, and surface protection applied in sequence with the cut. The slope interface follows JKR-SPJ Section 7 and the JKR slope engineering framework, distinct from the Section 2 earthworks spec.
Engineered fill embankment and batter
Fill-out to gain platform width on the downhill side. Benched keying into existing ground, thin-lift placement and compaction control, reinforced soil batters or retaining walls where fill height demands. Verified by nuclear density gauge, sand replacement, or DCP against the specified MDD.
Site drainage, ESCP and erosion control
Temporary and permanent drainage designed into the earthworks sequence: cut-off drains, berm drains, silt traps, and sediment ponds. Compliant ESCP for DOE and local authority. Topsoil stripped, stockpiled, and reinstated with erosion control cover on completed faces.
Retaining and slope interface, one contract
Hillside earthworks rarely stands alone. We coordinate the cut and fill with retaining walls, reinforced soil slopes, soil nailing, and horizontal drains under one CIDB G7 contract, so the earthworks contractor and the geotechnical contractor are the same party and the platform is handed over stable.
Codes governing our earthworks.
| Standard | Coverage |
|---|---|
| BS 6031 | Code of practice for earthworks (primary execution code) |
| BS 1377 | Methods of test for soils for civil engineering purposes |
| BS 5930 | Code of practice for ground investigations |
| BS EN 1997 (Eurocode 7) | Geotechnical design, partial-factor approach for cut and fill stability |
| JKR-SPJ Section 2 | Federal earthworks specification (JKR Standard Specifications) |
| MS 1227 | Malaysian standard for soil compaction |
| JKR-SPJ Section 7 + JKR slope framework | Governs the cut and fill slope stabilization interface (distinct from Section 2) |
| Compaction control | 95 percent MDD general fill, 98 percent MDD structural backfill |
| Field density verification | Nuclear density gauge, sand replacement, or DCP; Proctor for MDD; CBR per spec |
Full standards reference at /standards/. Credentials and CIDB verification at /credentials/.
Machinery that turns up on the slope.
| Plant | Role on a hillside site |
|---|---|
| 50-tonne excavator | Bulk cut and bench formation on the main faces, loading dump trucks |
| 20-tonne excavator | Bench trimming, drainage excavation, work in restricted hillside access |
| Articulated dump truck (ADT), 30 and 50 tonne | Haul of cut material on steep, unpaved hillside haul roads |
| Bulldozer | Spreading fill, forming lifts, ripping, haul-road maintenance |
| Motor grader | Trimming platform levels and subgrade, shaping drainage falls |
| Smooth-drum vibratory roller (12 to 22 tonne) | Compaction of granular and general fill in thin lifts |
| Padfoot (sheepsfoot) roller | Compaction of cohesive residual and lateritic fill |
| Pneumatic-tyre (PTR) roller | Sealing and proof-rolling of finished platform surfaces |
| Vibratory plate compactor | Confined areas, benches, and behind retaining structures |
| Hydraulic breaker | Breaking weathered rock and hard bands in the cut |
Plant is matched to the terrain, haul distance, and specified lift thickness. See our plant and machinery guide for selection detail.
How fast hillside earthworks actually moves.
| Operation | Plant | Indicative rate |
|---|---|---|
| Bulk cut, residual soil | 50-tonne excavator + 30-tonne ADT | 2,000 to 4,000 m3 per shift |
| Bulk fill placement + compaction (200 to 300 mm lifts) | Dozer + roller crew | 1,500 to 3,000 m3 per shift per crew |
| Topsoil strip and stockpile | Excavator + ADT | 5,000 to 10,000 m2 per shift |
| Subgrade preparation and final trim | Grader + roller | 3,000 to 6,000 m2 per shift |
Rates are for Malaysian residual soil in workable weather. Hillside sites carry a productivity penalty from steep haul roads, restricted benches, and monsoon stand-down, so the programme is built on realistic hillside output. Typical benched cut-and-fill sequence:
- 1. Strip and set out. Strip and stockpile topsoil, establish ESCP works (silt traps, sediment ponds, cut-off drains), set out platform levels and slope crests.
- 2. Cut from the top down. Form the cut in benches from the crest, trimming each face to design angle and stabilizing as the excavation descends.
- 3. Key and fill. Bench-key into competent existing ground before placing engineered fill in 200 to 300 mm lifts, compacting each layer to the specified MDD.
- 4. Verify and trim. Field-density test each layer, then grade, proof-roll, and trim the final platform and subgrade.
- 5. Protect and hand over. Complete permanent drainage, apply slope protection and erosion cover to finished faces, and hand over with compaction and test records.
Platform and terrace scope we have delivered.
| Project | Location | Hillside earthworks scope |
|---|---|---|
| Eco Terraces Phase 2 | Semenyih, Selangor (Mukim Bandar Batu 18) | Hillside terrace development. 120,000 m3 earthworks and 11,000 m2 retaining wall, with soil nailing on cut slopes. |
| Bandar Serendah | Hulu Selangor | Platform earthworks with 540,000 m3 backfill and 7 retaining structures, including platform earthworks for a national automotive-sector industrial facility. |
| Bandar Ulu Kelang Spine Road | Gombak, Selangor | 100 ft internal spine road with earthworks, drainage, and retention for a three-storey terrace cluster. |
| Mukim Sentul platform | Sentul, Kuala Lumpur | Platform creation: 6,000 m2 platform with 5,000 m2 reinforced earth (RE) wall. |
| Scientex Park Hulu Langat Earthworks | Hulu Langat, Selangor | Mixed-development platform earthworks (lots 53655, 53656, 4955). |
| Mukim Rawang Mixed Development Earthworks | Rawang, Gombak | Mixed-development hillside earthworks. |
| Alam Impian Township | Shah Alam, Selangor | Township earthworks with soil improvement, retaining walls, drainage, and flood detention pond across Precincts 6 to 10. |
| Welbuilder Earthworks Phase 5B | Jeram, Kuala Selangor | Earthworks and retaining wall, lots 14214 to 14223. |
| Centralfields Shah Alam U10 | Shah Alam, Selangor | Slope stabilization on township platform slopes, stages 1 to 4 (2024 to 2025). |
Full project portfolio at /projects/ (project name, location, and scope only; client names not disclosed per confidentiality).
Why hillside earthworks is a slope problem too.
Hillside earthworks in Malaysia is a weather and slope problem as much as an earthmoving one. Three constraints shape every hillside programme:
- Monsoon and tropical rainfall. Residual and lateritic soils soften and erode quickly, and saturated fill will not compact to specification. Bulk earthworks is programmed around the monsoon window where possible, open faces are minimized, and cut slopes are stabilized as they are formed.
- ESCP and DOE compliance. A compliant Erosion and Sediment Control Plan (silt traps, sediment ponds, cut-off and berm drains, temporary slope cover) is a programme constraint from day one. We carry project experience across state JKR, DOE, JPS, and local authorities including MBPP, DBKL, MBPJ, MBSA, MBSJ, MPSJ, and MPS.
- The slope and retaining interface. Cut faces, fill batters, and retained platforms are stabilized under the same contract, so nothing stands open waiting for a second contractor. Cut-slope stabilization follows JKR-SPJ Section 7 and the JKR slope engineering framework, distinct from the JKR-SPJ Section 2 earthworks specification.
See /erosion-control/, /slope-protection/, and /slope-stabilization/ for the stabilization scope that runs alongside the earthworks.
Developers, engineers and QS usually ask:
What is hillside earthworks, and how is it different from flat-site earthworks? +
Can hillside earthworks be done without slope stabilization or retaining walls? +
What CIDB grade and categories do you hold? +
How do you handle cut and fill balance on a hillside platform? +
What standards do you build hillside earthworks to? +
How does the monsoon affect the programme? +
What is your typical hillside cut and fill production rate? +
Can you take on both the earthworks and the geotechnical works? +
Where this connects.
Hillside development →
The wider picture: developing sloping land end to end, earthworks to handover.
Earthworks hub →
Full earthworks scope: cut and fill, platforms, subgrade, compaction control.
Land creation →
Creating usable land from difficult and sloping terrain.
Slope stabilization →
Stabilizing the cut and fill faces formed during hillside earthworks.
Retaining walls →
Retained platforms and terraces where cut or fill height demands it.
Slope protection →
Surface protection for finished cut and fill faces on hillside sites.
Erosion control →
ESCP, silt traps, sediment ponds, and slope cover through the monsoon.
Ground improvement →
Treating weak platform ground before or during earthworks.
Land development →
Full development delivery around the earthworks scope.
Plant and machinery guide →
Excavator, dump truck, roller, and grader selection for earthworks.
23 client projects →
Township, platform, and slope portfolio delivered 2022-2026.
Standards reference →
BS 6031, BS 1377, BS 5930, BS EN 1997, JKR-SPJ, MS 1227.
Need a hillside earthworks contractor for your project?
Send platform levels and cut-and-fill drawings (or site survey + soil report). Same-day quote with plant schedule, production rate, compaction and testing plan, ESCP approach, and the retaining and slope stabilization interface priced in. CIDB G7 + ISO 9001:2015.