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采用Ｇ４１４、Ｇ４１５图集制作预应力屋面梁和屋架时产生的问题及防治为使传统的屋架和屋面梁构件向高效预应力转化，建设部批准颁发了《预应力钢筋混凝土工字形屋面梁（Ｇ４１４增补）》和《预应力钢筋混凝土折线形屋架（Ｇ４１５增补）》图集。在这两个图集中采用碳素...
Problems and Preventions and Controls of Prestressed Roof Beams and Roof Trusses Made Using Atlases of G414 and G415 To convert traditional roof trusses and roof girders into high-efficiency prestressing, the Ministry of Construction approved the issuance of prestressed reinforced concrete I-shaped roof beams (G414). Supplements) and the Atlas of Prestressed Reinforced Concrete Polyline Girders (G415 Supplement). Use carbon in these two graphs...