Новости

PDN - a road plate tense. 

Plates are used for construction in areas sraschetnoy air temperature of the coldest month to minus 55S.
PDN applied to engineering structures, but most often in the construction of pavement in difficult climatic conditions. Traveler board PDN used in the construction of highways, temporary airstrips temporary roads.
Traveler board PDN calculated as prestressed orthotropic structures on an elastic "vinklerovom" Based on the equivalent ratio in the bed with less than = 10 kg/cm3 and corresponding elastic modulus E = 100Mpa reason for clearing the regulatory load of 50 kN (5ts) at the wheel three-axle vehicle. in the calculation takes into account the possibility of location on the plate one, two and four wheels (the rear bogie of the car and the wheels of two adjacent columns of cars) with a coefficient of overloading nper = 1.1 and coefficient of dynamic KG = 1,2.
PDN design tested for strength and fracture toughness at the stage of stripping, shipping, assembly and transportation.
In a match with SNIP 2.03.01-84 p.1.13 dynamic coefficient of stripping, shipping and installation KG = 1,4, with transportation - KG = 1,6. In these cases nper = 1,0
Plates road meet the technical requirements of TU 35-871-89 "Plates prestressed concrete road PDN and this issue.
In the manufacture of heavy concrete slabs used in accordance with GOST 26633-85.
Concrete strength shall be no lower-class design of concrete on the compressive strength in 27,5 and project class of concrete on the tensile strength in bending VBtb = 3,6.
Traveler board PDN may have just two reinforced mesh. In this case, road plates can be used to construct temporary access roads to public roads (or special) purpose.
Since the characteristics of road slabs PDN you can read in the relevant section of " Product Specifications ".
Our company produces road plates 1PP60.20-230 and airfield plates BAH-14, with the following characteristics .