- Country of manufactureRussia
- Plant manufacturerАО "Кировский ССК"
Beam duo-pitch trellised part of a combined framework of the one-storeyed building which is applied to creation of a roof of the heated and not heated rooms (are applied in flights of 12 and 18 m). Release of a beam of a special form is carried out from concrete of heavy brands with the durability of 30. The beam of BDR differs in a trellised design, is strengthened by intense fittings and has the high durability and the high bearing ability. The rafter beam bears loading and transmits it through support on the supporting designs (columns or walls).
BDR is made of heavy and light concrete and reinforced by previously strained fittings. The duo-pitch beam the imeetdvutavrovy section, and reduction of mass of a duo-pitch beam is reached thanks to the device in it through openings. Height of section of a duo-pitch trapezoid beam in the middle of flight is determined by a bias of the top belt 1:12 for cattle roofs.