Аннотация
In article is considered particularities tense-deformed conditions of the concrete and hunkerof the groove in sections transverse seams hard covering the car roads.It is executed theoretical and experimental study on estimation of toughness and particularities tense-deformed conditions leadingseams hard covering the car roads.For the first time in calculation seams hard covering the car roads on base of the new model, on pyramid pressing, offered B.U.Usenbaev, are taken into account transverse of power of the key and power of the grapping in concrete in vertical section.