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Precast elements for civil infrastructure.

Four product lines, each built to order. Switch every element between its product photo and its technical drawing, and open the PDF in a new tab.

01 · Earth retention

L-Retaining Walls

Cantilever L-shaped units that resist earth pressure with a minimal footprint. The self-stabilising base uses the weight of the retained soil, so walls install fast with no tie-backs - ideal for road widening, embankments and terraced sites.

Highway embankments Site grading Rail cuttings Yards & ramps
  • 40 - 200 cm
    Height range
  • 5 sizes
    Standard range
  • Custom
    Made to drawing
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Product photo
L-retaining wall - product photo
02 · Water conveyance

Box Culverts

Precast reinforced box sections (Tombina) that channel water, drainage or services beneath roads, rail and embankments. Delivered as complete monolithic units, they drop into the trench and connect quickly, cutting excavation time and disruption.

Stream & drainage crossings Under-road passages Service tunnels Flood culverts
  • 100 - 300 cm
    Clear opening
  • High flow
    Hydraulic capacity
  • Monolithic
    Single-pour section
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03 · Concept design

Cable-Duct Culvert

A concept study for dense urban corridors: a standard reinforced box culvert with a row of circular ducts cast into the base slab. Water and drainage run through the main opening while power, telecom and fibre cables pass cleanly through the ducts below - keeping utilities off the road surface and out of the waterway.

Large-city corridors Combined utility & drainage Cable & fibre routing Under-road passages
  • 160 × 160 × 200 cm
    Clear opening
  • 4 × Ø30 cm
    Cable ducts
  • Water + cables
    Combined section
  • Concept
    Design proposal
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Concept drawing
Cable-duct box culvert - concept drawing

Technical drawing

Cable-Duct Culvert · ISCBCH160160200

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04 · Open drainage

Open Channel

Precast open channel sections (Kanali i Hapur) for surface drainage, irrigation and stormwater. The open-top U profile carries high flows, is easy to inspect and clean, and installs as a continuous run of interlocking units.

Roadside drainage Irrigation canals Stormwater channels Industrial yards
  • 300 × 200 × 200 cm
    Section size
  • Open U profile
    High-flow channel
  • Interlocking
    Continuous run
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Product photo
Open channel - product photo

Technical drawing

Open Channel · ISTO300200200

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05 · Bridge structures

Bridge Beams

Pre-stressed I-beam, T-beam and double-T beams designed to span crossings with high load capacity and minimal depth. Cast and tensioned in our plant, they arrive ready to set on bearings - accelerating bridge erection and shortening road closures.

Highway overpasses River & valley spans Pedestrian bridges Interchange ramps
  • 10 - 40 m
    Span range
  • I / T / DT
    Profile options
  • Pre-stressed
    High-tensile strand
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Product photo
I-beam bridge beam - product photo

Technical drawing

I-Beam · ISIB1650100

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