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1.Pretensioned system high prestress concrete saddle roofing, called saddle plate is initiated by NORMCO in west germany in 60’s . It is applied for more than 3,000,000 sqm since it found.
先张法高效预应力混凝土马鞍形屋面板学名负高斯曲率板,俗称马鞍板.上世纪六十年代由西德NORMCO工程师首创,至今原西德马鞍板制造公司已经推广应用了三千多万平方米.收藏指正
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