6. SLABS

CHAPTER 6 "SLABS" 14 2.3.2 Definition of Rectangle on a slope Use this command to model slabs with an equivalent rectangular slab on a slope. This slab is a rectangular slab with sides at an angle with respect to the x and z axes (rectangular slope). Select the command and left-click inside the surface of the plate, the one to be modelled. To define the equivalent rectangle under slope: - Choose one side of the slab you are modelling with which the equivalent parallelogram will be parallel. - Left click, on the first top. - Move the mouse diagonally to the second vertex of the diagonal and - Left click to form the rectangle with a slope and create the equivalent plate. 2.3.3 Triangle definition Use this command to model triangular plates. The equivalent plate you create is a triangular plate. You select the slab of the level to be modeled, and then you define the 3 vertices of the equivalent triangle. To define the equivalent triangle: - Select the plate to be modeled by pressing with the mouse any point inside its surface. - Left click on the three sides of the equivalent triangle OBSERVATION: Triangular slabs must always be modelled and their sides must be assigned even if they do not show "?" in their designation. 2.4 Correspondence of ribs After modelling the shape of the non-rectangular plates, the correspondences of the sides and vertices of the equivalent plate with those of the real plate must be defined. This process is used to assign the members of the physical model of the plates to the sides of the mathematician to be solved and to match the lengths of the sides of the physical and mathematician.