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PLAN ID: EKC-STR-009Civil Infrastructure & Bridges • Highway, Drainage & Retaining StructuresFederal Ministry of Works Highway Manual & BS 5400 / Eurocode 1 (HA & HB Axle Wheel Loads)

Estate Civil Infrastructure Package: 1.5km Road, RC Box Culverts & Retaining Wall

Civil Engineering Infrastructure Package (Per Kilometer / Estate) • Estates, Communities & Industrial Layouts Nationwide

Standard Turnkey Build~₦21K/m²
NGN 310,000,000
NGN₦310.0M
USD$198K
GBP£155K
EUR€183K
Estate Civil Infrastructure Package: 1.5km Road, RC Box Culverts & Retaining Wall
C35/45 Sulphate-Resistant Concrete (Box Culverts & Retaining Walls)
Visual 1 of 2
GROSS FLOOR / PLOT AREA15000 sqm / 50000 sqm
STRUCTURAL LEVELSSub-Base + Stone Base + 50mm Asphalt Wearing Course + Dual RC Drains
REBAR & CONCRETE BOQ88.0T • 1,120m³
EST. BUILD DURATION20 – 28 Weeks (5–7 Months)
COREN Structural Engineering Schedule • EKC-STR-009

Complete 12-Point Structural & Civil Specifications

Complete civil engineering infrastructure execution for residential estates, industrial parks, and access roads. Includes topographic survey, earthworks grading, twin cast-in-situ reinforced concrete U-drains, double-cell RC box culverts, cantilevered retaining walls, and 50mm hot-rolled asphalt or 80mm interlocking stone pavement.

01. Structural Frame System

Flexible Asphaltic / Rigid Interlocking Pavement + Cast-in-Situ RC Hydraulic Culverts & Cantilever Retaining Walls

02. Governing Design Codes

Federal Ministry of Works Highway Manual & BS 5400 / Eurocode 1 (HA & HB Axle Wheel Loads)

03. Substructure & Foundation System

150mm Compacted Lateritic Sub-Base (CBR > 30%) + 150mm Crushed Stone Base Course (CBR > 80%)

04. Concrete Strength Grade

C35/45 Sulphate-Resistant Concrete (Box Culverts & Retaining Walls) | C25/30 (Line Drains & Kerbs)

05. Reinforcement Steel Specification

High-Yield TMT Bars fy = 500 N/mm² (Y16 & Y20 Culvert Deck & Retaining Wall Stem Bars, Y12 Distribution)

06. Suspended Floor Slab System

50mm Asphaltic Concrete Wearing Course over MC-1 Prime Coat OR 80mm Vibrated Concrete Paving Stones (40 N/mm²)

07. Column Grid & Section Sizes

3.0m × 2.5m Twin-Cell RC Box Culvert Span | 10.0m Carriageway Width + Walkways

08. Primary & Cantilever Beam Specs

300mm Thick RC Culvert Top Deck Slab (Engineered for 45-Tonne Articulated Trucks)

09. Blockwork & Shear-Wall System

200mm Cast-in-Situ RC U-Channel Storm Drains (900×900mm) + 3.5m High Cantilevered RC Retaining Walls with Weep Holes

10. Roof Trusses & Parapet Drainage

Solar-Powered Galvanized Streetlight Poles (9m Conical) at 30m Intervals + Underground Electrical Ducts

11. Required Soil Bearing Capacity

98% West African Proctor Compaction Density Tested via In-Situ Sand Replacement Method

12. Wind Load & Factor of Safety

50-Year Return Period Storm Hydraulic Capacity

Lead Structural Engineer

Engr. Chibuike Ekeson, FNSE, COREN

Principal Civil & Structural Engineer

EST. BUILD PRICE:NGN 310,000,000
Direct WhatsApp Engineering Quote Preview

“Hello Engr. Ekeson & Ekesonconstruct Civil Engineering Desk, I inspected the full structural details for "Estate Civil Infrastructure Package: 1.5km Road, RC Box Culverts & Retaining Wall" [Plan ID: EKC-STR-009]. Selected Scope: Standard Turnkey Build | Soil Profile: Firm Laterite Soil (Pad/Strip Baseline) | Website Estimated Build Cost: NGN 310,000,000. Please share the itemized BOQ and mobilization schedule for my land.”

Ask Exact Price to Build on WhatsAppCall Lead Engineer: +234 800 353 7662
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