Earthworks design and build contractor in Malaysia.
Infraconcrete Construction Sdn Bhd delivers turnkey earthworks design and build (EPC) across Malaysia. One contract carries the geotechnical and earthworks design responsibility, from ground investigation interpretation and cut and fill balance to as-built handover, plus bulk earthworks execution, plus retaining structures, plus slope stabilization, plus site drainage and erosion control. Design to BS 6031 and BS EN 1997 (Eurocode 7); compaction control to 95 percent MDD general fill and 98 percent MDD structural backfill per JKR-SPJ Section 2 and MS 1227. CIDB Grade G7 with categories CE01, CE08, CE21. Project-specific PI insurance on the design. Integrated platforms delivered including Bandar Serendah, Eco Terraces Phase 2, and Alam Impian Township.
Five scope elements, one accountable party.
Earthworks on a Malaysian hillside or township platform is rarely a single trade. It combines forming the platform, retaining the levels, treating the cut slopes, and draining the whole site. In design and build, all of it sits under one contract so the design of each element is set against the others rather than tendered in silos.
Geotechnical and earthworks design
Ground investigation interpretation, cut and fill balance, platform levels, mass-haul plan, slope geometry, and temporary works. Design to BS 6031 and BS EN 1997 (Eurocode 7), with BS 5930 governing the ground investigation and BS 1377 the soil testing.
Bulk earthworks execution
Topsoil strip and stockpile, bulk cut, fill placement and compaction in 200 to 300 mm lifts, subgrade preparation and final trim. Compaction to 95 percent MDD general fill and 98 percent MDD structural backfill per JKR-SPJ Section 2 and MS 1227.
Retaining structures
Reinforced earth (RE) walls, gravity, cantilever, and gabion. The wall type is chosen to suit the ground, the fill available on site, and the platform geometry, rather than fixed before the earthworks design is settled. Facing detail integrated with the drainage.
Slope stabilization
Soil nailing, shotcrete facing, and horizontal drains applied to the cut slopes the earthworks form. Designed and built as part of the same package so reinforcement, facing, and groundwater control are coordinated, not split across separate subcontracts.
Site drainage and erosion control
Surface drains, interceptor drains at cut crests, cascades and chutes, silt traps, and detention ponds. Erosion and Sediment Control Plan (ESCP) measures for DOE compliance, staged so the platform stays drained through the monsoon.
Where single-contract delivery earns its keep.
- Single accountability. One entity is responsible for both the earthworks design and its construction. When platform levels, settlement, or slope performance are questioned, there is no design-versus-build blame gap and one party stands behind the outcome, backed by project-specific PI insurance on the design.
- Faster interface resolution. Ground rarely matches the SI report exactly. When a soft pocket, a hidden boulder, or a higher water table appears, the design team sits on the contractor side, so a revised cut line, a changed retaining type, or an added drain is redesigned in days rather than through the weeks a separate consultant loop can take.
- Buildability-led design. The cut and fill scheme is set around what the plant fleet and crew can actually build economically. Mass-haul is optimised for haul distance to cut external cart-away and import, and platform sequencing is set to keep working areas drained and trafficable.
- Compressed programme. Design and enabling works overlap under one programme. Site clearing, access, and ESCP silt-control works can start while platform design and authority submissions are finalised, because the designer and builder are one team.
What the design package actually delivers.
| Design track | What it covers |
|---|---|
| Ground model | SI interpretation from boreholes and probing per BS 5930, soil classification and parameters from BS 1377 laboratory testing, groundwater regime, and founding-stratum assessment. |
| Cut and fill balance | Earthwork volumes, mass-haul diagram, cut-to-fill matching to minimise import and cart-away, and stockpile and borrow strategy. |
| Platform and levels | Finished platform levels, sub-platform build-up, subgrade CBR target, and settlement assessment for structural areas. |
| Retaining scheme | Wall type selection (RE, gravity, cantilever, gabion), geometry, global and internal stability, and drainage behind the facing. |
| Slope treatment | Cut slope geometry, factor of safety check, and soil nailing, shotcrete, or horizontal drain design where a slope needs reinforcement or groundwater control. |
| Drainage and ESCP | Surface and subsurface drainage layout, interceptor drains, detention or sediment ponds, and the erosion and sediment control plan for DOE compliance. |
| Temporary works | Battered temporary faces, dewatering, haul roads, and sequencing method statements for staged construction. |
Integrated output: a single earthworks design report with consistent ground assumptions, drawings covering platform, retaining, slope, and drainage, a construction sequence, a QA and compaction-testing programme, and the authority submission package. For the engineering background see the geotechnical design guide.
Codes governing the design and build.
| Standard | Coverage |
|---|---|
| BS 6031 | Code of practice for earthworks (primary execution code) |
| BS EN 1997 (Eurocode 7) | Geotechnical design, partial-factor method for slopes and retaining |
| BS 5930 | Code of practice for ground investigations |
| BS 1377 | Methods of test for soils for civil engineering (Proctor, CBR, classification) |
| MS 1227 | Malaysian standard for soil compaction |
| JKR-SPJ Section 2 | Federal earthworks specification for government and highway works |
| JKR-SPJ Section 7 | Slope-works specification where slope treatment is in scope |
| BS 8006-1 | Reinforced soil and RE retaining wall design where applicable |
Compaction control: 95 percent MDD for general fill, 98 percent MDD for structural backfill, with maximum dry density set from the Proctor test. Field density confirmed by nuclear density gauge, sand-replacement, or dynamic cone penetrometer (DCP); CBR tested per specification. All records held under the ISO 9001:2015 quality system. See the full standards reference.
What builds the platform.
| Plant / role | Function in the earthworks package |
|---|---|
| 50-tonne excavator | Bulk cut and mass excavation, loading to dump trucks, rock ripping with hydraulic breaker attachment |
| 20-tonne excavator | General cut and fill, trimming, drainage and retaining-wall excavation, working close to structures |
| 30-tonne and 50-tonne articulated dump truck (ADT) | On-site haul of cut material to fill areas and stockpiles along the mass-haul plan |
| Bulldozer | Spreading and grading of fill in lifts, stripping, and pushing to the excavator |
| Motor grader | Fine grading of platform and subgrade to design level and crossfall |
| Smooth-drum vibratory roller (12 to 22 tonne) | Compaction of granular and general fill in 200 to 300 mm lifts |
| Padfoot (sheepsfoot) roller | Compaction of cohesive clay fill where a smooth drum would not knead the layer |
| Pneumatic-tyre (PTR) roller | Sealing and final compaction of the subgrade surface |
| Vibratory plate compactor and hydraulic breaker | Confined compaction behind retaining walls and around structures; breaking of rock and hard material |
Crew structure: project manager or engineer-in-charge, site engineers, land surveyor for setting-out and level control, plant operators, banksmen and general crew, plus a QA or laboratory technician for field density and compaction records. Multi-front working for large township platforms.
Indicative output per shift.
| Operation | Typical rate | Basis |
|---|---|---|
| Bulk cut, residual soil | 2,000 to 4,000 m3 / shift | 50-tonne excavator plus 30-tonne ADT on a reasonable haul |
| Bulk fill placement and compaction | 1,500 to 3,000 m3 / shift per crew | 200 to 300 mm lifts, roller matched to fill type |
| Topsoil strip and stockpile | 5,000 to 10,000 m2 / shift | Enabling works ahead of bulk earthworks |
| Subgrade preparation and final trim | 3,000 to 6,000 m2 / shift | Grader plus roller to design level and crossfall |
Rates are indicative for typical Malaysian residual soil and depend on haul distance, weather, rock content, and site access. In design and build, the programme is built around these rates so the cut and fill sequence, retaining-wall construction, and drainage installation interlock rather than clash. Wet-weather contingency and monsoon-period sequencing are set into the programme from the design stage. For a fuller treatment of costs and programming, see the cost and programme guide and the equipment and machinery guide.
Platforms delivered as one package.
| Project | Location | Integrated scope delivered |
|---|---|---|
| Bandar Serendah | Hulu Selangor | 540,000 m3 backfill with 7 retaining structures. Includes an industrial facility platform for a national automotive-industry account. |
| Eco Terraces Phase 2 | Semenyih (Mukim Bandar Batu 18) | 120,000 m3 earthworks plus 11,000 m2 retaining wall, with soil nailing on the cut slopes. |
| Alam Impian Township | Shah Alam | Earthworks, soil improvement, soil nailing, retaining walls, drainage, and a flood detention pond across Precincts 6 to 10. |
| Mukim Sentul | Kuala Lumpur | 5,000 m2 RE wall plus 6,000 m2 platform earthworks. |
| Bandar Ulu Kelang Spine Road | Gombak, Selangor | Internal spine road with earthworks, drainage, and retention for a terrace-cluster development. |
| Welbuilder Phase 5B | Jeram, Kuala Selangor | Earthworks plus retaining wall, lots 14214 to 14223. |
| Mukim Rawang Mixed Development | Rawang, Gombak | Mixed-development platform earthworks. |
Project name, location, and scope only; client names are not disclosed per confidentiality. Full portfolio at /projects/.
Developers, consultants and main contractors usually ask:
What is earthworks design and build (turnkey EPC)? +
What does the single design and build contract cover? +
Why design and build rather than design-bid-build for earthworks? +
What CIDB grade and categories do you hold? +
What compaction and testing standard do you build to? +
Do you carry PI insurance for the design responsibility? +
Can you do earthworks design and build on a JKR or federal project? +
Which integrated earthworks projects have you delivered? +
Where this connects.
Earthworks hub →
Cut and fill, mass haul, platform creation, BS 6031, JKR-SPJ.
Earthworks contractor →
Install-to-drawing earthworks execution across Malaysia.
Earthworks and slope stabilization →
Combined platform and slope scope on hillside sites.
Slope stabilization design and build →
Turnkey EPC for the slope-only scope.
Land development →
Township platform delivery from raw land to buildable lots.
Retaining walls →
RE, gravity, cantilever, and gabion retaining systems.
Slope stabilization →
Integrated slope-stabilization umbrella.
Ground improvement →
Soft-soil treatment ahead of platform construction.
Geotechnical design guide →
Design background for cut, fill, retaining, and slope.
Projects →
Township, federal corridor, and slope portfolio 2022-2026.
Credentials →
CIDB G7, ISO 9001:2015, federal corridor experience.
Standards reference →
BS 6031, Eurocode 7, JKR-SPJ, MS 1227.
Earthworks design and build brief?
Send the ground investigation or soil report, the survey or proposed platform layout, and the development brief. Same-day acknowledgement, with a design-and-build proposal covering cut and fill balance, retaining and slope scheme, drainage strategy, programme, and price. CIDB G7 + ISO 9001:2015 + PI insurance on the design.