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    Why are concrete roads laid in sections with pitch between them?

    Question #72024. Asked by kaung30. (Nov 04 06 9:45 PM)


    ainenei

    		To join and allow for movement and expansion.

    http://www.sacnewsmonthly.com/invent/purging_expansion_mechanism/highway_expansion_joint.html

    Nov 04 06, 10:50 PM

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