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Category Archives: Safety and Regulations

Maintaining Quality Control in Stormwater Drainage Projects in Remote Nigerian Locations: Challenges and Solutions

Maintaining Quality Control in Stormwater Drainage Projects in Remote Nigerian Locations

Posted on 5 December 2025 - 9:23 pm by

Maintaining Quality Control in Stormwater Drainage Projects in Remote Nigerian Locations: Challenges and Solutions By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Introduction Stormwater drainage projects in remote Nigerian locations are critical for preventing flooding, erosion, and water contamination. However, ensuring quality control (QC) in these areas presents unique challenges due to logistical […]

Implementing a Robust Inspection and Testing Plan for Stormwater Drainage Construction in Nigeria

Robust Inspection Plan for Nigeria Stormwater Drainage

Posted on 5 November 2025 - 11:58 pm by

Building Resilient Foundations: Implementing a Robust Inspection and Testing Plan for Stormwater Drainage Construction in Nigeria By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Nigeria is urbanizing quickly and dealing with climate change, which means it often struggles with heavy rains and not enough good drainage. This causes big problems like floods, damaged […]

Promoting Sustainable Stormwater Management: Integrating Green Infrastructure and QC in Nigerian Projects

Integrating Green Infrastructure and QC in Nigerian Projects

Posted on 6 September 2025 - 6:34 am by

Paving the Way for a Water-Resilient Nigeria: Integrating Green Infrastructure and Quality Control in Stormwater Management By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Nigeria, a nation experiencing rapid urbanization, faces an ever-growing challenge: effective stormwater management. As cities like Ibadan, Osogbo, and Lagos expand, replacing natural landscapes with impervious surfaces, the risk […]

Case Study: Successful Implementation of Stormwater Drainage Quality Control in Warri, Delta State, Nigeria

Understanding Invert Levels in Flood-Control Engineering: A Case Study of Asaba’s Summit Road

Posted on 6 August 2025 - 9:33 am by

Understanding Invert Levels in Flood-Control Engineering: A Case Study of Asaba’s Summit Road By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Urban flooding is a persistent challenge in rapidly urbanising regions, threatening infrastructure, public health, and economic stability. For engineers and urban planners, designing effective flood-control systems requires a good understanding of hydraulic […]

Excavation by summit road at CH 0+250

Why Nigeria Must Adopt a Lifecycle-Based Quality Control Model for Stormwater Infrastructure

Posted on 6 May 2025 - 7:32 pm by

The Paradigm Shift: Why Nigeria Must Adopt a Lifecycle-Based Quality Control Model for Stormwater Infrastructure By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Nigeria, the economic powerhouse of Africa, is currently facing a crippling duality in its urban centers: rapid, uncontrolled urbanization juxtaposed with extreme climate vulnerability. The tragic consequence is chronic, destructive […]

Excavation Work and Sealing of the Top Slab Joint on Ongoing at Darren Akintoye

Understanding Geotechnical Considerations for Stormwater Drainage QC in Nigeria By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE)

Posted on 12 April 2025 - 9:19 am by

Understanding Geotechnical Considerations for Stormwater Drainage QC in Nigeria In civil engineering, the success of stormwater drainage systems depends heavily on geotechnical considerations. The interplay between soil properties and ground conditions directly impacts the quality, durability, and long-term functionality of these systems. In Nigeria, with its diverse soil profiles and environmental challenges, incorporating geotechnical insights […]

Using QA/QC Plans as Contractual Tools for Eliminating Construction Abuse

Posted on 6 January 2025 - 11:35 pm by

Using QA/QC Plans as Contractual Tools for Eliminating Construction Abuse How precise, enforceable quality‑assurance and quality‑control provisions protect owners, contractors, and the public from defects, sub‑standard workmanship, and costly disputes By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Introduction Construction projects are, by nature, complex collaborations involving dozens—sometimes hundreds—of parties: owners, designers, general […]

Integrating Green Infrastructure and QC in Nigerian Projects

Why Nigerian Drainage Regulations Are Ineffective—and What To Do About It

Posted on 8 December 2024 - 6:20 pm by

Why Nigerian Drainage Regulations Are Ineffective—and What To Do About It By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Flooding is an all too familiar experience for millions of Nigerians, especially during the rainy season. From bustling metropolises like Lagos and Abuja to mid-sized cities and densely populated urban neighbourhoods, torrential rains often […]

The Role of GIS and BIM in Enhancing Stormwater Drainage Quality Control in Nigeria

The Environmental Cost of Blocked Drains in Rapidly Urbanizing Nigerian Cities

Posted on 8 November 2024 - 5:54 pm by

The Environmental Cost of Blocked Drains in Rapidly Urbanising Nigerian Cities By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Nigeria, the most populous country in Africa, is experiencing rapid urbanisation, with cities like Lagos, Abuja, Onitsha, and Port Harcourt witnessing unprecedented growth. However, this rapid expansion has come at a high environmental cost, […]

Implementing a Robust Inspection and Testing Plan for Stormwater Drainage Construction in Nigeria

Evaluating Hydrological Assumptions in Nigeria’s Drainage Design Codes

Posted on 8 September 2024 - 5:12 pm by

Evaluating Hydrological Assumptions in Nigeria’s Drainage Design Codes: A Call for Modernisation in Urban Flood Resilience By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Introduction: The Hidden Flaws Beneath Nigeria’s Flooding Crisis Every rainy season, Nigeria grapples with devastating urban flooding—homes are submerged, roads turn into rivers, and critical infrastructure is compromised. While […]