Hmm, I used to play some similar game on my ZX spectrum in the early 90s. It was beams and supports falling from the top, and you had to lift them and put, making floors... Main hero was construction worker indeed, and he taken about 1/3 of screen... Unfortunately, I totally forgot the name of the game, and World of Spectrum gave me nothing with obvious keywords (as hard hat, construction or building). *shrug* Maybe it will resurface later.
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