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2. Lightweight Construction Compared to traditional roofing materials, such as tiles or concrete, trapezoidal sheet metal is considerably lighter. This characteristic reduces the load on a building's structure, making it easier to install without requiring extensive reinforcement. Consequently, this can lead to lower construction costs and faster project completion times.
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However, the square manhole cover does come with its own set of challenges. Theoretically, if a square cover is positioned diagonally over the hole, it could fall through. This poses a risk that is inherently absent with round covers. Thus, the use of square manhole covers can be seen as a compromise—acknowledging both aesthetic and practical concerns while also embracing the complexities of urban infrastructure.
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