**6.1 Adoption of MMC and associated strategies**

The associated strategies refer to design for standardization, modularization, and prefabrication. They also include design for disassembly and incorporation **of modern construction methods.** The adoption of prototype design options disposes the housing scheme to standardization, modularization, and prefabrication. However, prefabrication was not deployed on a significant scale. Some floor components were prefabricated and installed at some of the Igando Lagos HOMS buildings (See **Figure 4**).

With respect to design for reuse and disassembly, the *in situ* construction adopted for the projects hinders the possibility of disassembly of the building components and their subsequent reuse. The *in situ* reinforced concrete components cannot be reused or disassembled without full demolition. Similarly, *in situ* masonry walls cannot be disassembled and reused. The installations of doors, windows, and anti-burglary metal components are installed in such a way that some demolition of parts of the building must be carried out before the components can be removed. Such partial demolitions can impair the components and render them unusable subsequently. This also applies to building services installations water, drainage, and air-conditioning services. This is particularly challenging during routine maintenance work especially for building services.

In terms of construction methods adopted, the *in situ* construction methods characterized most of the building construction activities executed under the program. Hence, labor-intensive methods rather than technology-intensive methods were deployed in the construction of the buildings. Even though labor-intensive methods tend to be advantageous in terms of creating employment opportunities

**Figure 4.** *Hoisting of Prefabricated Slabs. Source: [91].*

for the population, it often leads to so much waste that runs against the tenets of circular economy.
