Winter application of Shunyi National Grain Reserve

Beijing Shunyi Zhonghong National Grain Reserve is a national key project, located in Banbidian, Shunyi, east of the Capital Airport, with a total construction area of 13596.02m2. The project includes four 30m span warehouses and some ancillary buildings. The warehouses are of frame and truss structure, and the roof structure is a 30m prestressed broken line roof truss. Beijing Dingsheng Building Component Factory is responsible for the production of 64 roof trusses (model YWJA-30-2). In terms of winter construction, funds were invested to install a 2t steam boiler, lay underground steam pipelines, coat the pipes with rock wool pipes, and purchase a 2000m2 rock wool blanket for foundation antifreeze. 15 steel strands and two end anchorages were used, and the Muhu brand MNC-C concrete (mortar) antifreeze produced by Beijing Muhu Additive Factory with superior quality performance was selected, with a dosage of 3% of the cement quality?? Daily low temperature -15 ℃; It can be used for both concrete construction and cement mortar construction.