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Elevated toll road on Jalan Ahmad Yani by pass, Jakarta, Indonesia.The elevated road used the Sosrobahu construction technique that rotates the beam-supporting bar on each pylon.
The helix of sustainability - the Carbon cycle ideal for manufacture and use The international recycling symbol - not nature identical.. The helix of sustainability is a concept coined to help the manufacturing industry move to more sustainable practices by mapping its models of raw material use and reuse onto those of nature.