The recent collapse  of Saint Academy Secondary School building in Jos, Plateau State, which claimed the lives of 22 persons among whom were innocent pupils and their teachers, has again brought to the fore, the menace of continuous building collapses in Nigeria. Sadly, that same Friday, a three-storey building still under construction in the students’ hostel area of the Nnamdi Azikiwe University at Ifite Awka, Anambra State, also crashed. Yet, following closely on the next morning, a two-storey building collapsed at Phase two, Site Two of the Kubwa area of Abuja, a former Al-Hilal Hotel that recently got reconstructed into residential quarters. Building collapse is becoming a daily phenomenon in Nigeria. If you live in a high-rise building, beware!
According to preliminary reports, the Saint Academy School tragedy is a sad out-come of a former bungalow which got converted into a two-storey building. The tragedy came at the ten-year anniversary of an earlier one in the same city of Jos when in September 2014, Abu Naima Primary and Secondary School, Bukuru, in Jos North LGA, had collapsed killing 30 pupils. As jarring and condemnable, the reccurrence of building collapses become, the regrettable losses have not elicited appropriate actions that would make them avoidable. Rather, after every incident, stakeholders react in routine knee-jerk rescue efforts, count human and material losses, wail and pour outward expressions of sympathy for victims, while some officials harp on the need to maintain guidelines on building standards, or even issue some mere threats that amount to no tangible solutions.
Though the history of building collapses is as old as Nigeria, its propensity has jumped in the last ten years, involving  especially new or on-going projects in Nigeria’s growimg mega cities, as developers in the face of poor building regulations try to reap inordinate profits from property boom. There has been virtually no one held culpable to deter perpetrators of unsafe building practices.On September 12, 2014, a six storey guest house within the Synagogue Church of All Nations at the Ikotun area of Lagos State, collapsed upon 300 victims leading to 116 deaths, among whom were 85 South Africans. The accident occurred despite forewarnings to church founder, Pastor TB Joshua, of observed structural defects. However, despite the Coroner’s Inquest inditing Pastor Joshua in the incident, he was never prosecuted.
On March 8, 2016 at Lekki, an on-going storey building being erected by the Lekki Worldwide Gardens collapsed killing 34 construction workers. This was despite allegations that Lagos State officials had issued a Stop Work Order on the construction site for contravening building approval terms. The developers were alleged to have recalcitrantly raised the building beyond the approved number of floors to the point of crashing. The crash on November 1, 2021, of another on-going construction of 21-storey Ikoyi Towers, which killed 44 persons, including the owner, Mr Femi Osibona, his personal assistant, Oyinye Enekwe and a US-based Nigerian business mogul and Managing Director of Foursquare Heights Ltd, Mr Wale Bob-Oseni, was also a consequence of adding more floors above the approved design levels. Disappointingly, these incidents and that at Banana Island, Lagos, of April 2023, ocurred despite projects being handled by supposed experts.
In recent times, Anambra State has been in the news more for building collapses than for anything else, though with lesser fatalities, but the crash on June 12, 2024, of an on-going five-storey Centenary Building in Onitsha, a building being erected by the Old Boys’ Association of Dennis Memorial Grammar School (DMGS) for its centenary anniversary, is worrisome given the calibre of professionals involved in the project. However, the collapse of Ochanja Market stalls in Onitsha, being constructed by Anambra State Government was the most disappointing of all, being handled by a regulator that should set the pace. Within weeks, another on-going construction of a two-storey market stalls collapsed on about 200 traders just last week, killing four at Eke Oyibo Market of Amawbia in the Awka metropolis, in close proximity of city planning officials.
Rivers state also is not left out in this ugly tally considering the sad crash of then on-going seven-storey building on November 23, 2018, at Woji Road, GRA Phase 2 of Port Harcourt, followed by the recent spike in on-going building collapses which include the February, 2023 crash of on-going two-storey building at Mbodo-Aluu, two separate callapses in June, 2023 of two-storey buildings at Okilton Drive and Ada-George areas of Port Harcourt, and the collapse weeks ago of a two-storey building at Okporo area of Rumuodara in Port Harcourt. While it is difficult to enumerate all incidents across the country, it is remarkable that the menace became worse within the last ten years. What may cause a building to collapse? Experts say, structural failures as a result of flaws in building design process, or improper project implementation, lead to collapse, but there is more to it from prevailing conditions in the country.
Though, present day developers use software tools to model building designs, the inability to interpret results with respect to erecting high rise buildings with currently available construction materials in the Nigerian market, raises questions of expertise. While many practitioners still resort to using structural formulation templates established from colonial days, when construction materials found in the Nigerian open markets were of standards specified in structural design handbooks, the use of prevailing poor materials for such designs creates vulnerability. Today, due to standards enforcement failures, the construction materials market is chaotic with regard to getting actual nominal dimensions of specific material quality, in view particularly of reinforcement rods.
For instance, what is nominally a 12mm rod in the market today, could range in real rod diameters from 10mm, 11mm to 11.5mm if one insists on taking actual measurements with a calliper, but a dealer would rate them small guage, medium gauge or full gauge 12mm rods, saying that size depends on manufacturer. But gauge should be gauge without intermediates because any reduction in diameter of rods leads to exponential reduction in cross-sectional area and shear strength. Also more unascertain is the alloy make-up which determines important metallurgical properties of rods, and one may seem out from the moon to ask a trader. The confusion cuts across all rod sizes, and buying materials has become an art in itself. For sawn woods, it is difficult to get any nominal dimension except one undertakes to saw customised dimensions, which is unusual. Also, some experts say current cement qualities are incomparable to former ones.
The consequence is that rebars configured according to specifications from handbook templates, but done with ‘Nigerian materials,’ may not bear the intended loads, or do so with very marginal factor of safety. In a country where budget has become a major decisive factor in construction, these considerations may be secondary in the absence of strict regulations even to ‘professional’ practitioners, let alone expecting some to employ qualified on-site supervisors. The solution to building collapses is that Nigeria should, no matter how difficult it is, revert to upholding general standards. The strict enforcement of the National Building Code of 2006 should be a good starting point. A regime in which concrete tests and certifications at every critical stage of construction are mandatorily required as pre-conditions for project continuation, should be strictly introduced, while the Standards Organisation of Nigeria should deploy materials test laboratories to certify and provide technical data of prevailing building materials to help operators make informed decisions.
Moreso, a situation where regulatory officials, city planners, supervisors and approval officers, allow themselves to be compromised should be discouraged by ensuring that prosecutions were conclusively pursued in every collapse to involve developers and culpable regulatory officials.

Joseph Nwankwor