Note that the slab is at elevation 3m in z-direction. It is preferable that the cutting plane be kept slightly away from the nodes, because sometimes SAP2000 is unable to process the output for the section cuts exactly at the nodes, and report a zero values.įigure 3 shows the data for section cut definition for column strip 1 for section cut #1. The section cut has to be defined using Quadrilateral cutting plan. There is another way to define section cuts usingīy using the Define -> section cut option the output for the forces on the section can be recalled and processed later on.
One can use the optionīut the output is not saved for future use, if this option is used. The section cuts are numbered in the figure 1. For this purpose, 5 section cuts are to be defined in each span for each strip (10 section cuts per strip). Now the section cuts are to be defined to capture the total force (Shear force, bending moment and axial force) in the width of the strip. Hence two column strips and one middle strip is marked on the figure 1. Since the flate plate is symmetrical in two directions, one needs to define strips in one direction and for half the slab. The slab can be divided into column strips and middle strips, according to the ACI-318 code. (Since the flat plate is symmetrical in two directions, one needs to define section cuts in one direction and for half the slab)įigure 1: Example reinforced flat plate with the section cuts marked for column strips and middle strip Design the flat plate using section cut techniques in SAP2000. The slab is loaded by self weight of the slab and live load of 5 KN/m2. The bay width in x and y-directions is 5m. The structure consists of two bays in x-direction and two bays in y-direction. Note:- FEM package like SAFE has built in features similar to section cut, that’s why you get analysis results for strips.Ĭonsider a reinforced concrete flat plate rested over 3m high columns. An extra advantage of the diagrams will be that a diagrams (bending moment, shear force and axial force) for different load combinations can be drawn on one plot simultaneously, hence easy to determine the governing load combinations. The output for the strips shall be the more familiar bending moment and shear force diagram plotted along the length of the strips. We can defined the section cuts according to the strips defined in the ACI 318 code. Hence presenting the contour plots in the design reports is not a good practice.Ī way out is to use section cut techniques which are available in most of the FEM packages. These contour plots a not useful to have a quick insight on the analysis results. Is there any way I can design a plate element (for example a flat plate) using FEM program?Īnswer: For a number of years what I have been observing is that most of the time the design reports include contour plots for the shell elements for different load combinations. :-Overhead Transmission Line Tower Design.How can I design a reinforced concrete flat plate in SAP2000?Įxpanded Question: When I model slabs (or shell elements) using FEM software, the usual output is the contour plots on the shells which are not very useful for designing. Leading builders and colonizers are investing hugely in the real estate business to get maximum profit.ġ) Introduction to Structural Engineering Real Estate business is one of the profitable sectors of the market and there are huge no of scopes and opportunities for B-Tech Civil Engineering students who want to pursue their career as a structural Designer of Design Engineer. Pro is structural analysis and design program with applications primarily in the building and Real- estate industry-like commercial building, bridges and highway structures, industrial structures, chemical plant structures, dams, Turbine foundations, culverts, others embedded structures etc.
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