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of /home/abouaayt/public_html/aboutcivil/answers/qa-plugin/user-management/layer.php what is reason for crack in ptc | reasons for cracks in ptc | ptc crack - Civil Engineering Technical Questions Answers - Ask a Civil Engineer
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what is reason for crack in ptc | reasons for cracks in ptc | ptc crack

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because of creep in concrete
because of heat
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